Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2014 Damien Zammit <damien@zamaudio.com> |
| 5 | * Copyright (C) 2014 Vladimir Serbinenko <phcoder@gmail.com> |
| 6 | * Copyright (C) 2016 Patrick Rudolph <siro@das-labor.org> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; version 2 of the License. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | */ |
| 17 | |
Elyes HAOUAS | f97c1c9 | 2019-12-03 18:22:06 +0100 | [diff] [blame] | 18 | #include <commonlib/helpers.h> |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 19 | #include <console/console.h> |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 20 | #include <string.h> |
Subrata Banik | 53b08c3 | 2018-12-10 14:11:35 +0530 | [diff] [blame] | 21 | #include <arch/cpu.h> |
Kyösti Mälkki | 13f6650 | 2019-03-03 08:01:05 +0200 | [diff] [blame] | 22 | #include <device/mmio.h> |
Kyösti Mälkki | f1b58b7 | 2019-03-01 13:43:02 +0200 | [diff] [blame] | 23 | #include <device/pci_ops.h> |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 24 | #include <northbridge/intel/sandybridge/chip.h> |
| 25 | #include <device/pci_def.h> |
| 26 | #include <delay.h> |
Elyes HAOUAS | 1d3b3c3 | 2019-05-04 08:12:42 +0200 | [diff] [blame] | 27 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 28 | #include "raminit_native.h" |
| 29 | #include "raminit_common.h" |
| 30 | #include "sandybridge.h" |
| 31 | |
| 32 | /* FIXME: no ECC support. */ |
| 33 | /* FIXME: no support for 3-channel chipsets. */ |
| 34 | |
| 35 | /* |
| 36 | * Register description: |
| 37 | * Intel provides a command queue of depth four. |
| 38 | * Every command is configured by using multiple registers. |
| 39 | * On executing the command queue you have to provide the depth used. |
| 40 | * |
| 41 | * Known registers: |
| 42 | * Channel X = [0, 1] |
| 43 | * Command queue index Y = [0, 1, 2, 3] |
| 44 | * |
| 45 | * DEFAULT_MCHBAR + 0x4220 + 0x400 * X + 4 * Y: command io register |
| 46 | * Controls the DRAM command signals |
| 47 | * Bit 0: !RAS |
| 48 | * Bit 1: !CAS |
| 49 | * Bit 2: !WE |
| 50 | * |
| 51 | * DEFAULT_MCHBAR + 0x4200 + 0x400 * X + 4 * Y: addr bankslot io register |
| 52 | * Controls the address, bank address and slotrank signals |
| 53 | * Bit 0-15 : Address |
| 54 | * Bit 20-22: Bank Address |
| 55 | * Bit 24-25: slotrank |
| 56 | * |
| 57 | * DEFAULT_MCHBAR + 0x4230 + 0x400 * X + 4 * Y: idle register |
| 58 | * Controls the idle time after issuing this DRAM command |
| 59 | * Bit 16-32: number of clock-cylces to idle |
| 60 | * |
| 61 | * DEFAULT_MCHBAR + 0x4284 + 0x400 * channel: execute command queue |
| 62 | * Starts to execute all queued commands |
| 63 | * Bit 0 : start DRAM command execution |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 64 | * Bit 18-19 : number of queued commands - 1 |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 65 | */ |
| 66 | |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 67 | #define RUN_QUEUE_4284(x) ((((x) - 1) << 18) | 1) // 0 <= x < 4 |
| 68 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 69 | static void sfence(void) |
| 70 | { |
| 71 | asm volatile ("sfence"); |
| 72 | } |
| 73 | |
| 74 | static void toggle_io_reset(void) { |
| 75 | /* toggle IO reset bit */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 76 | u32 r32 = MCHBAR32(0x5030); |
| 77 | MCHBAR32(0x5030) = r32 | 0x20; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 78 | udelay(1); |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 79 | MCHBAR32(0x5030) = r32 & ~0x20; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 80 | udelay(1); |
| 81 | } |
| 82 | |
| 83 | static u32 get_XOVER_CLK(u8 rankmap) |
| 84 | { |
| 85 | return rankmap << 24; |
| 86 | } |
| 87 | |
| 88 | static u32 get_XOVER_CMD(u8 rankmap) |
| 89 | { |
| 90 | u32 reg; |
| 91 | |
| 92 | // enable xover cmd |
| 93 | reg = 0x4000; |
| 94 | |
| 95 | // enable xover ctl |
| 96 | if (rankmap & 0x3) |
| 97 | reg |= 0x20000; |
| 98 | |
| 99 | if (rankmap & 0xc) |
| 100 | reg |= 0x4000000; |
| 101 | |
| 102 | return reg; |
| 103 | } |
| 104 | |
| 105 | /* CAS write latency. To be programmed in MR2. |
| 106 | * See DDR3 SPEC for MR2 documentation. */ |
| 107 | u8 get_CWL(u32 tCK) |
| 108 | { |
| 109 | /* Get CWL based on tCK using the following rule: */ |
| 110 | switch (tCK) { |
| 111 | case TCK_1333MHZ: |
| 112 | return 12; |
| 113 | case TCK_1200MHZ: |
| 114 | case TCK_1100MHZ: |
| 115 | return 11; |
| 116 | case TCK_1066MHZ: |
| 117 | case TCK_1000MHZ: |
| 118 | return 10; |
| 119 | case TCK_933MHZ: |
| 120 | case TCK_900MHZ: |
| 121 | return 9; |
| 122 | case TCK_800MHZ: |
| 123 | case TCK_700MHZ: |
| 124 | return 8; |
| 125 | case TCK_666MHZ: |
| 126 | return 7; |
| 127 | case TCK_533MHZ: |
| 128 | return 6; |
| 129 | default: |
| 130 | return 5; |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | void dram_find_common_params(ramctr_timing *ctrl) |
| 135 | { |
| 136 | size_t valid_dimms; |
| 137 | int channel, slot; |
| 138 | dimm_info *dimms = &ctrl->info; |
| 139 | |
| 140 | ctrl->cas_supported = (1 << (MAX_CAS - MIN_CAS + 1)) - 1; |
| 141 | valid_dimms = 0; |
| 142 | FOR_ALL_CHANNELS for (slot = 0; slot < 2; slot++) { |
| 143 | const dimm_attr *dimm = &dimms->dimm[channel][slot]; |
| 144 | if (dimm->dram_type != SPD_MEMORY_TYPE_SDRAM_DDR3) |
| 145 | continue; |
| 146 | valid_dimms++; |
| 147 | |
| 148 | /* Find all possible CAS combinations */ |
| 149 | ctrl->cas_supported &= dimm->cas_supported; |
| 150 | |
| 151 | /* Find the smallest common latencies supported by all DIMMs */ |
| 152 | ctrl->tCK = MAX(ctrl->tCK, dimm->tCK); |
| 153 | ctrl->tAA = MAX(ctrl->tAA, dimm->tAA); |
| 154 | ctrl->tWR = MAX(ctrl->tWR, dimm->tWR); |
| 155 | ctrl->tRCD = MAX(ctrl->tRCD, dimm->tRCD); |
| 156 | ctrl->tRRD = MAX(ctrl->tRRD, dimm->tRRD); |
| 157 | ctrl->tRP = MAX(ctrl->tRP, dimm->tRP); |
| 158 | ctrl->tRAS = MAX(ctrl->tRAS, dimm->tRAS); |
| 159 | ctrl->tRFC = MAX(ctrl->tRFC, dimm->tRFC); |
| 160 | ctrl->tWTR = MAX(ctrl->tWTR, dimm->tWTR); |
| 161 | ctrl->tRTP = MAX(ctrl->tRTP, dimm->tRTP); |
| 162 | ctrl->tFAW = MAX(ctrl->tFAW, dimm->tFAW); |
Dan Elkouby | dabebc3 | 2018-04-13 18:47:10 +0300 | [diff] [blame] | 163 | ctrl->tCWL = MAX(ctrl->tCWL, dimm->tCWL); |
| 164 | ctrl->tCMD = MAX(ctrl->tCMD, dimm->tCMD); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 165 | } |
| 166 | |
| 167 | if (!ctrl->cas_supported) |
| 168 | die("Unsupported DIMM combination. " |
| 169 | "DIMMS do not support common CAS latency"); |
| 170 | if (!valid_dimms) |
| 171 | die("No valid DIMMs found"); |
| 172 | } |
| 173 | |
| 174 | void dram_xover(ramctr_timing * ctrl) |
| 175 | { |
| 176 | u32 reg; |
| 177 | int channel; |
| 178 | |
| 179 | FOR_ALL_CHANNELS { |
| 180 | // enable xover clk |
| 181 | reg = get_XOVER_CLK(ctrl->rankmap[channel]); |
| 182 | printram("XOVER CLK [%x] = %x\n", channel * 0x100 + 0xc14, |
| 183 | reg); |
| 184 | MCHBAR32(channel * 0x100 + 0xc14) = reg; |
| 185 | |
| 186 | // enable xover ctl & xover cmd |
| 187 | reg = get_XOVER_CMD(ctrl->rankmap[channel]); |
| 188 | printram("XOVER CMD [%x] = %x\n", 0x100 * channel + 0x320c, |
| 189 | reg); |
| 190 | MCHBAR32(0x100 * channel + 0x320c) = reg; |
| 191 | } |
| 192 | } |
| 193 | |
Patrick Rudolph | 19c3dad | 2016-11-26 11:37:45 +0100 | [diff] [blame] | 194 | static void dram_odt_stretch(ramctr_timing *ctrl, int channel) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 195 | { |
Iru Cai | 89af71c | 2018-08-16 16:46:27 +0800 | [diff] [blame] | 196 | u32 addr, cpu, stretch; |
Patrick Rudolph | 19c3dad | 2016-11-26 11:37:45 +0100 | [diff] [blame] | 197 | |
| 198 | stretch = ctrl->ref_card_offset[channel]; |
| 199 | /* ODT stretch: Delay ODT signal by stretch value. |
| 200 | * Useful for multi DIMM setups on the same channel. */ |
Subrata Banik | 53b08c3 | 2018-12-10 14:11:35 +0530 | [diff] [blame] | 201 | cpu = cpu_get_cpuid(); |
Patrick Rudolph | 19c3dad | 2016-11-26 11:37:45 +0100 | [diff] [blame] | 202 | if (IS_SANDY_CPU(cpu) && IS_SANDY_CPU_C(cpu)) { |
| 203 | if (stretch == 2) |
| 204 | stretch = 3; |
Iru Cai | 89af71c | 2018-08-16 16:46:27 +0800 | [diff] [blame] | 205 | addr = 0x401c + 0x400 * channel; |
| 206 | MCHBAR32_AND_OR(addr, 0xffffc3ff, |
Felix Held | 9fe248f | 2018-07-31 20:59:45 +0200 | [diff] [blame] | 207 | (stretch << 12) | (stretch << 10)); |
Iru Cai | 89af71c | 2018-08-16 16:46:27 +0800 | [diff] [blame] | 208 | printk(RAM_DEBUG, "OTHP Workaround [%x] = %x\n", addr, |
| 209 | MCHBAR32(addr)); |
Patrick Rudolph | 19c3dad | 2016-11-26 11:37:45 +0100 | [diff] [blame] | 210 | } else { |
| 211 | // OTHP |
Iru Cai | 89af71c | 2018-08-16 16:46:27 +0800 | [diff] [blame] | 212 | addr = 0x400c + 0x400 * channel; |
| 213 | MCHBAR32_AND_OR(addr, 0xfff0ffff, |
Felix Held | 9fe248f | 2018-07-31 20:59:45 +0200 | [diff] [blame] | 214 | (stretch << 16) | (stretch << 18)); |
Iru Cai | 89af71c | 2018-08-16 16:46:27 +0800 | [diff] [blame] | 215 | printk(RAM_DEBUG, "OTHP [%x] = %x\n", addr, MCHBAR32(addr)); |
Patrick Rudolph | 19c3dad | 2016-11-26 11:37:45 +0100 | [diff] [blame] | 216 | } |
| 217 | } |
| 218 | |
| 219 | void dram_timing_regs(ramctr_timing *ctrl) |
| 220 | { |
| 221 | u32 reg, addr, val32; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 222 | int channel; |
| 223 | |
| 224 | FOR_ALL_CHANNELS { |
| 225 | // DBP |
| 226 | reg = 0; |
| 227 | reg |= ctrl->tRCD; |
| 228 | reg |= (ctrl->tRP << 4); |
| 229 | reg |= (ctrl->CAS << 8); |
| 230 | reg |= (ctrl->CWL << 12); |
| 231 | reg |= (ctrl->tRAS << 16); |
| 232 | printram("DBP [%x] = %x\n", 0x400 * channel + 0x4000, reg); |
| 233 | MCHBAR32(0x400 * channel + 0x4000) = reg; |
| 234 | |
| 235 | // RAP |
| 236 | reg = 0; |
| 237 | reg |= ctrl->tRRD; |
| 238 | reg |= (ctrl->tRTP << 4); |
| 239 | reg |= (ctrl->tCKE << 8); |
| 240 | reg |= (ctrl->tWTR << 12); |
| 241 | reg |= (ctrl->tFAW << 16); |
| 242 | reg |= (ctrl->tWR << 24); |
| 243 | reg |= (3 << 30); |
| 244 | printram("RAP [%x] = %x\n", 0x400 * channel + 0x4004, reg); |
| 245 | MCHBAR32(0x400 * channel + 0x4004) = reg; |
| 246 | |
| 247 | // OTHP |
| 248 | addr = 0x400 * channel + 0x400c; |
| 249 | reg = 0; |
| 250 | reg |= ctrl->tXPDLL; |
| 251 | reg |= (ctrl->tXP << 5); |
| 252 | reg |= (ctrl->tAONPD << 8); |
| 253 | reg |= 0xa0000; |
| 254 | printram("OTHP [%x] = %x\n", addr, reg); |
| 255 | MCHBAR32(addr) = reg; |
| 256 | |
| 257 | MCHBAR32(0x400 * channel + 0x4014) = 0; |
| 258 | |
Felix Held | 9fe248f | 2018-07-31 20:59:45 +0200 | [diff] [blame] | 259 | MCHBAR32_OR(addr, 0x00020000); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 260 | |
Patrick Rudolph | 19c3dad | 2016-11-26 11:37:45 +0100 | [diff] [blame] | 261 | dram_odt_stretch(ctrl, channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 262 | |
Patrick Rudolph | 5ee9bc1 | 2017-10-31 10:49:52 +0100 | [diff] [blame] | 263 | /* |
Patrick Rudolph | b009ac4 | 2018-07-25 15:27:50 +0200 | [diff] [blame] | 264 | * TC-Refresh timing parameters |
Patrick Rudolph | 5ee9bc1 | 2017-10-31 10:49:52 +0100 | [diff] [blame] | 265 | * The tREFIx9 field should be programmed to minimum of |
| 266 | * 8.9*tREFI (to allow for possible delays from ZQ or |
| 267 | * isoc) and tRASmax (70us) divided by 1024. |
| 268 | */ |
| 269 | val32 = MIN((ctrl->tREFI * 89) / 10, (70000 << 8) / ctrl->tCK); |
| 270 | |
| 271 | reg = ((ctrl->tREFI & 0xffff) << 0) | |
| 272 | ((ctrl->tRFC & 0x1ff) << 16) | |
| 273 | (((val32 / 1024) & 0x7f) << 25); |
| 274 | printram("REFI [%x] = %x\n", 0x400 * channel + 0x4298, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 275 | MCHBAR32(0x400 * channel + 0x4298) = reg; |
| 276 | |
Felix Held | 9fe248f | 2018-07-31 20:59:45 +0200 | [diff] [blame] | 277 | MCHBAR32_OR(0x400 * channel + 0x4294, 0xff); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 278 | |
| 279 | // SRFTP |
| 280 | reg = 0; |
| 281 | val32 = tDLLK; |
| 282 | reg = (reg & ~0xfff) | val32; |
| 283 | val32 = ctrl->tXSOffset; |
| 284 | reg = (reg & ~0xf000) | (val32 << 12); |
| 285 | val32 = tDLLK - ctrl->tXSOffset; |
| 286 | reg = (reg & ~0x3ff0000) | (val32 << 16); |
| 287 | val32 = ctrl->tMOD - 8; |
| 288 | reg = (reg & ~0xf0000000) | (val32 << 28); |
| 289 | printram("SRFTP [%x] = %x\n", 0x400 * channel + 0x42a4, |
| 290 | reg); |
| 291 | MCHBAR32(0x400 * channel + 0x42a4) = reg; |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | void dram_dimm_mapping(ramctr_timing *ctrl) |
| 296 | { |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 297 | int channel; |
| 298 | dimm_info *info = &ctrl->info; |
| 299 | |
| 300 | FOR_ALL_CHANNELS { |
Nico Huber | ac4f216 | 2017-10-01 18:14:43 +0200 | [diff] [blame] | 301 | dimm_attr *dimmA, *dimmB; |
| 302 | u32 reg = 0; |
| 303 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 304 | if (info->dimm[channel][0].size_mb >= |
| 305 | info->dimm[channel][1].size_mb) { |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 306 | dimmA = &info->dimm[channel][0]; |
| 307 | dimmB = &info->dimm[channel][1]; |
Nico Huber | ac4f216 | 2017-10-01 18:14:43 +0200 | [diff] [blame] | 308 | reg |= 0 << 16; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 309 | } else { |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 310 | dimmA = &info->dimm[channel][1]; |
| 311 | dimmB = &info->dimm[channel][0]; |
Nico Huber | ac4f216 | 2017-10-01 18:14:43 +0200 | [diff] [blame] | 312 | reg |= 1 << 16; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 313 | } |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 314 | |
Nico Huber | ac4f216 | 2017-10-01 18:14:43 +0200 | [diff] [blame] | 315 | if (dimmA && (dimmA->ranks > 0)) { |
| 316 | reg |= dimmA->size_mb / 256; |
| 317 | reg |= (dimmA->ranks - 1) << 17; |
| 318 | reg |= (dimmA->width / 8 - 1) << 19; |
| 319 | } |
| 320 | |
| 321 | if (dimmB && (dimmB->ranks > 0)) { |
| 322 | reg |= (dimmB->size_mb / 256) << 8; |
| 323 | reg |= (dimmB->ranks - 1) << 18; |
| 324 | reg |= (dimmB->width / 8 - 1) << 20; |
| 325 | } |
| 326 | |
| 327 | reg |= 1 << 21; /* rank interleave */ |
| 328 | reg |= 1 << 22; /* enhanced interleave */ |
| 329 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 330 | if ((dimmA && (dimmA->ranks > 0)) |
| 331 | || (dimmB && (dimmB->ranks > 0))) { |
| 332 | ctrl->mad_dimm[channel] = reg; |
| 333 | } else { |
| 334 | ctrl->mad_dimm[channel] = 0; |
| 335 | } |
| 336 | } |
| 337 | } |
| 338 | |
| 339 | void dram_dimm_set_mapping(ramctr_timing * ctrl) |
| 340 | { |
| 341 | int channel; |
| 342 | FOR_ALL_CHANNELS { |
| 343 | MCHBAR32(0x5004 + channel * 4) = ctrl->mad_dimm[channel]; |
| 344 | } |
| 345 | } |
| 346 | |
| 347 | void dram_zones(ramctr_timing * ctrl, int training) |
| 348 | { |
| 349 | u32 reg, ch0size, ch1size; |
| 350 | u8 val; |
| 351 | reg = 0; |
| 352 | val = 0; |
| 353 | if (training) { |
| 354 | ch0size = ctrl->channel_size_mb[0] ? 256 : 0; |
| 355 | ch1size = ctrl->channel_size_mb[1] ? 256 : 0; |
| 356 | } else { |
| 357 | ch0size = ctrl->channel_size_mb[0]; |
| 358 | ch1size = ctrl->channel_size_mb[1]; |
| 359 | } |
| 360 | |
| 361 | if (ch0size >= ch1size) { |
| 362 | reg = MCHBAR32(0x5014); |
| 363 | val = ch1size / 256; |
| 364 | reg = (reg & ~0xff000000) | val << 24; |
| 365 | reg = (reg & ~0xff0000) | (2 * val) << 16; |
| 366 | MCHBAR32(0x5014) = reg; |
| 367 | MCHBAR32(0x5000) = 0x24; |
| 368 | } else { |
| 369 | reg = MCHBAR32(0x5014); |
| 370 | val = ch0size / 256; |
| 371 | reg = (reg & ~0xff000000) | val << 24; |
| 372 | reg = (reg & ~0xff0000) | (2 * val) << 16; |
| 373 | MCHBAR32(0x5014) = reg; |
| 374 | MCHBAR32(0x5000) = 0x21; |
| 375 | } |
| 376 | } |
| 377 | |
| 378 | #define HOST_BRIDGE PCI_DEVFN(0, 0) |
| 379 | #define DEFAULT_TCK TCK_800MHZ |
| 380 | |
| 381 | unsigned int get_mem_min_tck(void) |
| 382 | { |
| 383 | u32 reg32; |
| 384 | u8 rev; |
| 385 | const struct device *dev; |
| 386 | const struct northbridge_intel_sandybridge_config *cfg = NULL; |
| 387 | |
Kyösti Mälkki | e737755 | 2018-06-21 16:20:55 +0300 | [diff] [blame] | 388 | dev = pcidev_path_on_root(HOST_BRIDGE); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 389 | if (dev) |
| 390 | cfg = dev->chip_info; |
| 391 | |
| 392 | /* If this is zero, it just means devicetree.cb didn't set it */ |
| 393 | if (!cfg || cfg->max_mem_clock_mhz == 0) { |
Julius Werner | cd49cce | 2019-03-05 16:53:33 -0800 | [diff] [blame] | 394 | if (CONFIG(NATIVE_RAMINIT_IGNORE_MAX_MEM_FUSES)) |
Patrick Rudolph | b794a69 | 2017-08-08 13:13:51 +0200 | [diff] [blame] | 395 | return TCK_1333MHZ; |
| 396 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 397 | rev = pci_read_config8(PCI_DEV(0, 0, 0), PCI_DEVICE_ID); |
| 398 | |
| 399 | if ((rev & BASE_REV_MASK) == BASE_REV_SNB) { |
| 400 | /* read Capabilities A Register DMFC bits */ |
| 401 | reg32 = pci_read_config32(PCI_DEV(0, 0, 0), CAPID0_A); |
| 402 | reg32 &= 0x7; |
| 403 | |
| 404 | switch (reg32) { |
| 405 | case 7: return TCK_533MHZ; |
| 406 | case 6: return TCK_666MHZ; |
| 407 | case 5: return TCK_800MHZ; |
| 408 | /* reserved: */ |
| 409 | default: |
| 410 | break; |
| 411 | } |
| 412 | } else { |
| 413 | /* read Capabilities B Register DMFC bits */ |
| 414 | reg32 = pci_read_config32(PCI_DEV(0, 0, 0), CAPID0_B); |
| 415 | reg32 = (reg32 >> 4) & 0x7; |
| 416 | |
| 417 | switch (reg32) { |
| 418 | case 7: return TCK_533MHZ; |
| 419 | case 6: return TCK_666MHZ; |
| 420 | case 5: return TCK_800MHZ; |
| 421 | case 4: return TCK_933MHZ; |
| 422 | case 3: return TCK_1066MHZ; |
| 423 | case 2: return TCK_1200MHZ; |
| 424 | case 1: return TCK_1333MHZ; |
| 425 | /* reserved: */ |
| 426 | default: |
| 427 | break; |
| 428 | } |
| 429 | } |
| 430 | return DEFAULT_TCK; |
| 431 | } else { |
| 432 | if (cfg->max_mem_clock_mhz >= 1066) |
| 433 | return TCK_1066MHZ; |
| 434 | else if (cfg->max_mem_clock_mhz >= 933) |
| 435 | return TCK_933MHZ; |
| 436 | else if (cfg->max_mem_clock_mhz >= 800) |
| 437 | return TCK_800MHZ; |
| 438 | else if (cfg->max_mem_clock_mhz >= 666) |
| 439 | return TCK_666MHZ; |
| 440 | else if (cfg->max_mem_clock_mhz >= 533) |
| 441 | return TCK_533MHZ; |
| 442 | else |
| 443 | return TCK_400MHZ; |
| 444 | } |
| 445 | } |
| 446 | |
| 447 | #define DEFAULT_PCI_MMIO_SIZE 2048 |
| 448 | |
| 449 | static unsigned int get_mmio_size(void) |
| 450 | { |
| 451 | const struct device *dev; |
| 452 | const struct northbridge_intel_sandybridge_config *cfg = NULL; |
| 453 | |
Kyösti Mälkki | e737755 | 2018-06-21 16:20:55 +0300 | [diff] [blame] | 454 | dev = pcidev_path_on_root(HOST_BRIDGE); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 455 | if (dev) |
| 456 | cfg = dev->chip_info; |
| 457 | |
| 458 | /* If this is zero, it just means devicetree.cb didn't set it */ |
| 459 | if (!cfg || cfg->pci_mmio_size == 0) |
| 460 | return DEFAULT_PCI_MMIO_SIZE; |
| 461 | else |
| 462 | return cfg->pci_mmio_size; |
| 463 | } |
| 464 | |
| 465 | void dram_memorymap(ramctr_timing * ctrl, int me_uma_size) |
| 466 | { |
| 467 | u32 reg, val, reclaim; |
| 468 | u32 tom, gfxstolen, gttsize; |
| 469 | size_t tsegsize, mmiosize, toludbase, touudbase, gfxstolenbase, gttbase, |
| 470 | tsegbase, mestolenbase; |
| 471 | size_t tsegbasedelta, remapbase, remaplimit; |
| 472 | uint16_t ggc; |
| 473 | |
| 474 | mmiosize = get_mmio_size(); |
| 475 | |
| 476 | ggc = pci_read_config16(NORTHBRIDGE, GGC); |
| 477 | if (!(ggc & 2)) { |
| 478 | gfxstolen = ((ggc >> 3) & 0x1f) * 32; |
| 479 | gttsize = ((ggc >> 8) & 0x3); |
| 480 | } else { |
| 481 | gfxstolen = 0; |
| 482 | gttsize = 0; |
| 483 | } |
| 484 | |
| 485 | tsegsize = CONFIG_SMM_TSEG_SIZE >> 20; |
| 486 | |
| 487 | tom = ctrl->channel_size_mb[0] + ctrl->channel_size_mb[1]; |
| 488 | |
| 489 | mestolenbase = tom - me_uma_size; |
| 490 | |
| 491 | toludbase = MIN(4096 - mmiosize + gfxstolen + gttsize + tsegsize, |
| 492 | tom - me_uma_size); |
| 493 | gfxstolenbase = toludbase - gfxstolen; |
| 494 | gttbase = gfxstolenbase - gttsize; |
| 495 | |
| 496 | tsegbase = gttbase - tsegsize; |
| 497 | |
| 498 | // Round tsegbase down to nearest address aligned to tsegsize |
| 499 | tsegbasedelta = tsegbase & (tsegsize - 1); |
| 500 | tsegbase &= ~(tsegsize - 1); |
| 501 | |
| 502 | gttbase -= tsegbasedelta; |
| 503 | gfxstolenbase -= tsegbasedelta; |
| 504 | toludbase -= tsegbasedelta; |
| 505 | |
| 506 | // Test if it is possible to reclaim a hole in the RAM addressing |
| 507 | if (tom - me_uma_size > toludbase) { |
| 508 | // Reclaim is possible |
| 509 | reclaim = 1; |
| 510 | remapbase = MAX(4096, tom - me_uma_size); |
| 511 | remaplimit = |
| 512 | remapbase + MIN(4096, tom - me_uma_size) - toludbase - 1; |
| 513 | touudbase = remaplimit + 1; |
| 514 | } else { |
| 515 | // Reclaim not possible |
| 516 | reclaim = 0; |
| 517 | touudbase = tom - me_uma_size; |
| 518 | } |
| 519 | |
| 520 | // Update memory map in pci-e configuration space |
| 521 | printk(BIOS_DEBUG, "Update PCI-E configuration space:\n"); |
| 522 | |
| 523 | // TOM (top of memory) |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 524 | reg = pci_read_config32(PCI_DEV(0, 0, 0), TOM); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 525 | val = tom & 0xfff; |
| 526 | reg = (reg & ~0xfff00000) | (val << 20); |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 527 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", TOM, reg); |
| 528 | pci_write_config32(PCI_DEV(0, 0, 0), TOM, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 529 | |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 530 | reg = pci_read_config32(PCI_DEV(0, 0, 0), TOM + 4); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 531 | val = tom & 0xfffff000; |
| 532 | reg = (reg & ~0x000fffff) | (val >> 12); |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 533 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", TOM + 4, reg); |
| 534 | pci_write_config32(PCI_DEV(0, 0, 0), TOM + 4, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 535 | |
| 536 | // TOLUD (top of low used dram) |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 537 | reg = pci_read_config32(PCI_DEV(0, 0, 0), TOLUD); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 538 | val = toludbase & 0xfff; |
| 539 | reg = (reg & ~0xfff00000) | (val << 20); |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 540 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", TOLUD, reg); |
| 541 | pci_write_config32(PCI_DEV(0, 0, 0), TOLUD, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 542 | |
| 543 | // TOUUD LSB (top of upper usable dram) |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 544 | reg = pci_read_config32(PCI_DEV(0, 0, 0), TOUUD); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 545 | val = touudbase & 0xfff; |
| 546 | reg = (reg & ~0xfff00000) | (val << 20); |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 547 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", TOUUD, reg); |
| 548 | pci_write_config32(PCI_DEV(0, 0, 0), TOUUD, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 549 | |
| 550 | // TOUUD MSB |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 551 | reg = pci_read_config32(PCI_DEV(0, 0, 0), TOUUD + 4); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 552 | val = touudbase & 0xfffff000; |
| 553 | reg = (reg & ~0x000fffff) | (val >> 12); |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 554 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", TOUUD + 4, reg); |
| 555 | pci_write_config32(PCI_DEV(0, 0, 0), TOUUD + 4, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 556 | |
| 557 | if (reclaim) { |
| 558 | // REMAP BASE |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 559 | pci_write_config32(PCI_DEV(0, 0, 0), REMAPBASE, remapbase << 20); |
| 560 | pci_write_config32(PCI_DEV(0, 0, 0), REMAPBASE + 4, remapbase >> 12); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 561 | |
| 562 | // REMAP LIMIT |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 563 | pci_write_config32(PCI_DEV(0, 0, 0), REMAPLIMIT, remaplimit << 20); |
| 564 | pci_write_config32(PCI_DEV(0, 0, 0), REMAPLIMIT + 4, remaplimit >> 12); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 565 | } |
| 566 | // TSEG |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 567 | reg = pci_read_config32(PCI_DEV(0, 0, 0), TSEGMB); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 568 | val = tsegbase & 0xfff; |
| 569 | reg = (reg & ~0xfff00000) | (val << 20); |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 570 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", TSEGMB, reg); |
| 571 | pci_write_config32(PCI_DEV(0, 0, 0), TSEGMB, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 572 | |
| 573 | // GFX stolen memory |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 574 | reg = pci_read_config32(PCI_DEV(0, 0, 0), BDSM); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 575 | val = gfxstolenbase & 0xfff; |
| 576 | reg = (reg & ~0xfff00000) | (val << 20); |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 577 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", BDSM, reg); |
| 578 | pci_write_config32(PCI_DEV(0, 0, 0), BDSM, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 579 | |
| 580 | // GTT stolen memory |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 581 | reg = pci_read_config32(PCI_DEV(0, 0, 0), BGSM); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 582 | val = gttbase & 0xfff; |
| 583 | reg = (reg & ~0xfff00000) | (val << 20); |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 584 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", BGSM, reg); |
| 585 | pci_write_config32(PCI_DEV(0, 0, 0), BGSM, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 586 | |
| 587 | if (me_uma_size) { |
Felix Held | bc3668a | 2019-12-28 18:44:06 +0100 | [diff] [blame] | 588 | reg = pci_read_config32(PCI_DEV(0, 0, 0), MEMASK + 4); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 589 | val = (0x80000 - me_uma_size) & 0xfffff000; |
| 590 | reg = (reg & ~0x000fffff) | (val >> 12); |
Felix Held | bc3668a | 2019-12-28 18:44:06 +0100 | [diff] [blame] | 591 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", MEMASK + 4, reg); |
| 592 | pci_write_config32(PCI_DEV(0, 0, 0), MEMASK + 4, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 593 | |
| 594 | // ME base |
Felix Held | bc3668a | 2019-12-28 18:44:06 +0100 | [diff] [blame] | 595 | reg = pci_read_config32(PCI_DEV(0, 0, 0), MEBASE); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 596 | val = mestolenbase & 0xfff; |
| 597 | reg = (reg & ~0xfff00000) | (val << 20); |
Felix Held | bc3668a | 2019-12-28 18:44:06 +0100 | [diff] [blame] | 598 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", MEBASE, reg); |
| 599 | pci_write_config32(PCI_DEV(0, 0, 0), MEBASE, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 600 | |
Felix Held | bc3668a | 2019-12-28 18:44:06 +0100 | [diff] [blame] | 601 | reg = pci_read_config32(PCI_DEV(0, 0, 0), MEBASE + 4); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 602 | val = mestolenbase & 0xfffff000; |
| 603 | reg = (reg & ~0x000fffff) | (val >> 12); |
Felix Held | bc3668a | 2019-12-28 18:44:06 +0100 | [diff] [blame] | 604 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", MEBASE + 4, reg); |
| 605 | pci_write_config32(PCI_DEV(0, 0, 0), MEBASE + 4, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 606 | |
| 607 | // ME mask |
Felix Held | bc3668a | 2019-12-28 18:44:06 +0100 | [diff] [blame] | 608 | reg = pci_read_config32(PCI_DEV(0, 0, 0), MEMASK); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 609 | val = (0x80000 - me_uma_size) & 0xfff; |
| 610 | reg = (reg & ~0xfff00000) | (val << 20); |
Felix Held | 8fa02a8 | 2019-12-28 18:57:06 +0100 | [diff] [blame^] | 611 | reg = reg | (1 << 10); // set lockbit on ME mem |
| 612 | reg = reg | (1 << 11); // set ME memory enable |
Felix Held | bc3668a | 2019-12-28 18:44:06 +0100 | [diff] [blame] | 613 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", MEMASK, reg); |
| 614 | pci_write_config32(PCI_DEV(0, 0, 0), MEMASK, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 615 | } |
| 616 | } |
| 617 | |
| 618 | static void wait_428c(int channel) |
| 619 | { |
| 620 | while (1) { |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 621 | if (MCHBAR32(0x428c + (channel << 10)) & 0x50) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 622 | return; |
| 623 | } |
| 624 | } |
| 625 | |
| 626 | static void write_reset(ramctr_timing * ctrl) |
| 627 | { |
| 628 | int channel, slotrank; |
| 629 | |
| 630 | /* choose a populated channel. */ |
| 631 | channel = (ctrl->rankmap[0]) ? 0 : 1; |
| 632 | |
| 633 | wait_428c(channel); |
| 634 | |
| 635 | /* choose a populated rank. */ |
| 636 | slotrank = (ctrl->rankmap[channel] & 1) ? 0 : 2; |
| 637 | |
| 638 | /* DRAM command ZQCS */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 639 | MCHBAR32(0x4220 + 0x400 * channel) = 0x0f003; |
| 640 | MCHBAR32(0x4230 + 0x400 * channel) = 0x80c01; |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 641 | MCHBAR32(0x4200 + 0x400 * channel) = (slotrank << 24) | 0x60000; |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 642 | MCHBAR32(0x4210 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 643 | |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 644 | // execute command queue - why is bit 22 set here?! |
| 645 | MCHBAR32(0x4284 + 0x400 * channel) = (1 << 22) | RUN_QUEUE_4284(1); |
| 646 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 647 | wait_428c(channel); |
| 648 | } |
| 649 | |
| 650 | void dram_jedecreset(ramctr_timing * ctrl) |
| 651 | { |
Felix Held | 9fe248f | 2018-07-31 20:59:45 +0200 | [diff] [blame] | 652 | u32 reg; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 653 | int channel; |
| 654 | |
| 655 | while (!(MCHBAR32(0x5084) & 0x10000)); |
| 656 | do { |
| 657 | reg = MCHBAR32(0x428c); |
| 658 | } while ((reg & 0x14) == 0); |
| 659 | |
| 660 | // Set state of memory controller |
| 661 | reg = 0x112; |
| 662 | MCHBAR32(0x5030) = reg; |
| 663 | MCHBAR32(0x4ea0) = 0; |
| 664 | reg |= 2; //ddr reset |
| 665 | MCHBAR32(0x5030) = reg; |
| 666 | |
| 667 | // Assert dimm reset signal |
Felix Held | 9fe248f | 2018-07-31 20:59:45 +0200 | [diff] [blame] | 668 | MCHBAR32_AND(0x5030, ~0x2); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 669 | |
| 670 | // Wait 200us |
| 671 | udelay(200); |
| 672 | |
| 673 | // Deassert dimm reset signal |
Felix Held | 9fe248f | 2018-07-31 20:59:45 +0200 | [diff] [blame] | 674 | MCHBAR32_OR(0x5030, 2); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 675 | |
| 676 | // Wait 500us |
| 677 | udelay(500); |
| 678 | |
| 679 | // Enable DCLK |
Felix Held | 9fe248f | 2018-07-31 20:59:45 +0200 | [diff] [blame] | 680 | MCHBAR32_OR(0x5030, 4); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 681 | |
| 682 | // XXX Wait 20ns |
| 683 | udelay(1); |
| 684 | |
| 685 | FOR_ALL_CHANNELS { |
| 686 | // Set valid rank CKE |
Felix Held | 9fe248f | 2018-07-31 20:59:45 +0200 | [diff] [blame] | 687 | reg = ctrl->rankmap[channel]; |
| 688 | MCHBAR32(0x42a0 + 0x400 * channel) = reg; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 689 | |
| 690 | // Wait 10ns for ranks to settle |
| 691 | //udelay(0.01); |
| 692 | |
| 693 | reg = (reg & ~0xf0) | (ctrl->rankmap[channel] << 4); |
Felix Held | 9fe248f | 2018-07-31 20:59:45 +0200 | [diff] [blame] | 694 | MCHBAR32(0x42a0 + 0x400 * channel) = reg; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 695 | |
| 696 | // Write reset using a NOP |
| 697 | write_reset(ctrl); |
| 698 | } |
| 699 | } |
| 700 | |
| 701 | static odtmap get_ODT(ramctr_timing *ctrl, u8 rank, int channel) |
| 702 | { |
| 703 | /* Get ODT based on rankmap: */ |
| 704 | int dimms_per_ch = (ctrl->rankmap[channel] & 1) |
| 705 | + ((ctrl->rankmap[channel] >> 2) & 1); |
| 706 | |
| 707 | if (dimms_per_ch == 1) { |
| 708 | return (const odtmap){60, 60}; |
| 709 | } else { |
| 710 | return (const odtmap){120, 30}; |
| 711 | } |
| 712 | } |
| 713 | |
| 714 | static void write_mrreg(ramctr_timing *ctrl, int channel, int slotrank, |
| 715 | int reg, u32 val) |
| 716 | { |
| 717 | wait_428c(channel); |
| 718 | |
| 719 | if (ctrl->rank_mirror[channel][slotrank]) { |
| 720 | /* DDR3 Rank1 Address mirror |
| 721 | * swap the following pins: |
| 722 | * A3<->A4, A5<->A6, A7<->A8, BA0<->BA1 */ |
| 723 | reg = ((reg >> 1) & 1) | ((reg << 1) & 2); |
| 724 | val = (val & ~0x1f8) | ((val >> 1) & 0xa8) |
| 725 | | ((val & 0xa8) << 1); |
| 726 | } |
| 727 | |
| 728 | /* DRAM command MRS */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 729 | MCHBAR32(0x4220 + 0x400 * channel) = 0x0f000; |
| 730 | MCHBAR32(0x4230 + 0x400 * channel) = 0x41001; |
| 731 | MCHBAR32(0x4200 + 0x400 * channel) = |
| 732 | (slotrank << 24) | (reg << 20) | val | 0x60000; |
| 733 | MCHBAR32(0x4210 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 734 | |
| 735 | /* DRAM command MRS */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 736 | MCHBAR32(0x4224 + 0x400 * channel) = 0x1f000; |
| 737 | MCHBAR32(0x4234 + 0x400 * channel) = 0x41001; |
| 738 | MCHBAR32(0x4204 + 0x400 * channel) = |
| 739 | (slotrank << 24) | (reg << 20) | val | 0x60000; |
| 740 | MCHBAR32(0x4214 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 741 | |
| 742 | /* DRAM command MRS */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 743 | MCHBAR32(0x4228 + 0x400 * channel) = 0x0f000; |
| 744 | MCHBAR32(0x4238 + 0x400 * channel) = 0x1001 | (ctrl->tMOD << 16); |
| 745 | MCHBAR32(0x4208 + 0x400 * channel) = |
| 746 | (slotrank << 24) | (reg << 20) | val | 0x60000; |
| 747 | MCHBAR32(0x4218 + 0x400 * channel) = 0; |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 748 | |
| 749 | // execute command queue |
| 750 | MCHBAR32(0x4284 + 0x400 * channel) = RUN_QUEUE_4284(3); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 751 | } |
| 752 | |
| 753 | static u32 make_mr0(ramctr_timing * ctrl, u8 rank) |
| 754 | { |
| 755 | u16 mr0reg, mch_cas, mch_wr; |
| 756 | static const u8 mch_wr_t[12] = { 1, 2, 3, 4, 0, 5, 0, 6, 0, 7, 0, 0 }; |
Patrick Rudolph | 74203de | 2017-11-20 11:57:01 +0100 | [diff] [blame] | 757 | const size_t is_mobile = get_platform_type() == PLATFORM_MOBILE; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 758 | |
| 759 | /* DLL Reset - self clearing - set after CLK frequency has been changed */ |
| 760 | mr0reg = 0x100; |
| 761 | |
| 762 | // Convert CAS to MCH register friendly |
| 763 | if (ctrl->CAS < 12) { |
| 764 | mch_cas = (u16) ((ctrl->CAS - 4) << 1); |
| 765 | } else { |
| 766 | mch_cas = (u16) (ctrl->CAS - 12); |
| 767 | mch_cas = ((mch_cas << 1) | 0x1); |
| 768 | } |
| 769 | |
| 770 | // Convert tWR to MCH register friendly |
| 771 | mch_wr = mch_wr_t[ctrl->tWR - 5]; |
| 772 | |
| 773 | mr0reg = (mr0reg & ~0x4) | ((mch_cas & 0x1) << 2); |
| 774 | mr0reg = (mr0reg & ~0x70) | ((mch_cas & 0xe) << 3); |
| 775 | mr0reg = (mr0reg & ~0xe00) | (mch_wr << 9); |
| 776 | |
| 777 | // Precharge PD - Fast (desktop) 0x1 or slow (mobile) 0x0 - mostly power-saving feature |
Patrick Rudolph | 74203de | 2017-11-20 11:57:01 +0100 | [diff] [blame] | 778 | mr0reg = (mr0reg & ~0x1000) | (!is_mobile << 12); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 779 | return mr0reg; |
| 780 | } |
| 781 | |
| 782 | static void dram_mr0(ramctr_timing *ctrl, u8 rank, int channel) |
| 783 | { |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 784 | write_mrreg(ctrl, channel, rank, 0, make_mr0(ctrl, rank)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 785 | } |
| 786 | |
| 787 | static u32 encode_odt(u32 odt) |
| 788 | { |
| 789 | switch (odt) { |
| 790 | case 30: |
| 791 | return (1 << 9) | (1 << 2); // RZQ/8, RZQ/4 |
| 792 | case 60: |
| 793 | return (1 << 2); // RZQ/4 |
| 794 | case 120: |
| 795 | return (1 << 6); // RZQ/2 |
| 796 | default: |
| 797 | case 0: |
| 798 | return 0; |
| 799 | } |
| 800 | } |
| 801 | |
| 802 | static u32 make_mr1(ramctr_timing *ctrl, u8 rank, int channel) |
| 803 | { |
| 804 | odtmap odt; |
| 805 | u32 mr1reg; |
| 806 | |
| 807 | odt = get_ODT(ctrl, rank, channel); |
| 808 | mr1reg = 0x2; |
| 809 | |
| 810 | mr1reg |= encode_odt(odt.rttnom); |
| 811 | |
| 812 | return mr1reg; |
| 813 | } |
| 814 | |
| 815 | static void dram_mr1(ramctr_timing *ctrl, u8 rank, int channel) |
| 816 | { |
| 817 | u16 mr1reg; |
| 818 | |
| 819 | mr1reg = make_mr1(ctrl, rank, channel); |
| 820 | |
| 821 | write_mrreg(ctrl, channel, rank, 1, mr1reg); |
| 822 | } |
| 823 | |
| 824 | static void dram_mr2(ramctr_timing *ctrl, u8 rank, int channel) |
| 825 | { |
| 826 | u16 pasr, cwl, mr2reg; |
| 827 | odtmap odt; |
| 828 | int srt; |
| 829 | |
| 830 | pasr = 0; |
| 831 | cwl = ctrl->CWL - 5; |
| 832 | odt = get_ODT(ctrl, rank, channel); |
| 833 | |
| 834 | srt = ctrl->extended_temperature_range && !ctrl->auto_self_refresh; |
| 835 | |
| 836 | mr2reg = 0; |
| 837 | mr2reg = (mr2reg & ~0x7) | pasr; |
| 838 | mr2reg = (mr2reg & ~0x38) | (cwl << 3); |
| 839 | mr2reg = (mr2reg & ~0x40) | (ctrl->auto_self_refresh << 6); |
| 840 | mr2reg = (mr2reg & ~0x80) | (srt << 7); |
| 841 | mr2reg |= (odt.rttwr / 60) << 9; |
| 842 | |
| 843 | write_mrreg(ctrl, channel, rank, 2, mr2reg); |
| 844 | } |
| 845 | |
| 846 | static void dram_mr3(ramctr_timing *ctrl, u8 rank, int channel) |
| 847 | { |
| 848 | write_mrreg(ctrl, channel, rank, 3, 0); |
| 849 | } |
| 850 | |
| 851 | void dram_mrscommands(ramctr_timing * ctrl) |
| 852 | { |
| 853 | u8 slotrank; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 854 | int channel; |
| 855 | |
| 856 | FOR_ALL_POPULATED_CHANNELS { |
| 857 | FOR_ALL_POPULATED_RANKS { |
| 858 | // MR2 |
| 859 | dram_mr2(ctrl, slotrank, channel); |
| 860 | |
| 861 | // MR3 |
| 862 | dram_mr3(ctrl, slotrank, channel); |
| 863 | |
| 864 | // MR1 |
| 865 | dram_mr1(ctrl, slotrank, channel); |
| 866 | |
| 867 | // MR0 |
| 868 | dram_mr0(ctrl, slotrank, channel); |
| 869 | } |
| 870 | } |
| 871 | |
| 872 | /* DRAM command NOP */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 873 | MCHBAR32(0x4e20) = 0x7; |
| 874 | MCHBAR32(0x4e30) = 0xf1001; |
| 875 | MCHBAR32(0x4e00) = 0x60002; |
| 876 | MCHBAR32(0x4e10) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 877 | |
| 878 | /* DRAM command ZQCL */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 879 | MCHBAR32(0x4e24) = 0x1f003; |
| 880 | MCHBAR32(0x4e34) = 0x1901001; |
| 881 | MCHBAR32(0x4e04) = 0x60400; |
| 882 | MCHBAR32(0x4e14) = 0x288; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 883 | |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 884 | // execute command queue on all channels? Why isn't bit 0 set here? |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 885 | MCHBAR32(0x4e84) = 0x40004; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 886 | |
| 887 | // Drain |
| 888 | FOR_ALL_CHANNELS { |
| 889 | // Wait for ref drained |
| 890 | wait_428c(channel); |
| 891 | } |
| 892 | |
| 893 | // Refresh enable |
Felix Held | 9fe248f | 2018-07-31 20:59:45 +0200 | [diff] [blame] | 894 | MCHBAR32_OR(0x5030, 8); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 895 | |
| 896 | FOR_ALL_POPULATED_CHANNELS { |
Felix Held | 9fe248f | 2018-07-31 20:59:45 +0200 | [diff] [blame] | 897 | MCHBAR32_AND(0x4020 + 0x400 * channel, ~0x200000); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 898 | |
| 899 | wait_428c(channel); |
| 900 | |
| 901 | slotrank = (ctrl->rankmap[channel] & 1) ? 0 : 2; |
| 902 | |
| 903 | // Drain |
| 904 | wait_428c(channel); |
| 905 | |
| 906 | /* DRAM command ZQCS */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 907 | MCHBAR32(0x4220 + 0x400 * channel) = 0x0f003; |
| 908 | MCHBAR32(0x4230 + 0x400 * channel) = 0x659001; |
| 909 | MCHBAR32(0x4200 + 0x400 * channel) = |
| 910 | (slotrank << 24) | 0x60000; |
| 911 | MCHBAR32(0x4210 + 0x400 * channel) = 0x3e0; |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 912 | |
| 913 | // execute command queue |
| 914 | MCHBAR32(0x4284 + 0x400 * channel) = RUN_QUEUE_4284(1); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 915 | |
| 916 | // Drain |
| 917 | wait_428c(channel); |
| 918 | } |
| 919 | } |
| 920 | |
| 921 | static const u32 lane_registers[] = { |
| 922 | 0x0000, 0x0200, 0x0400, 0x0600, |
| 923 | 0x1000, 0x1200, 0x1400, 0x1600, |
| 924 | 0x0800 |
| 925 | }; |
| 926 | |
| 927 | void program_timings(ramctr_timing * ctrl, int channel) |
| 928 | { |
| 929 | u32 reg32, reg_4024, reg_c14, reg_c18, reg_4028; |
| 930 | int lane; |
| 931 | int slotrank, slot; |
| 932 | int full_shift = 0; |
| 933 | u16 slot320c[NUM_SLOTS]; |
| 934 | |
| 935 | FOR_ALL_POPULATED_RANKS { |
| 936 | if (full_shift < -ctrl->timings[channel][slotrank].val_320c) |
| 937 | full_shift = -ctrl->timings[channel][slotrank].val_320c; |
| 938 | } |
| 939 | |
| 940 | for (slot = 0; slot < NUM_SLOTS; slot++) |
| 941 | switch ((ctrl->rankmap[channel] >> (2 * slot)) & 3) { |
| 942 | case 0: |
| 943 | default: |
| 944 | slot320c[slot] = 0x7f; |
| 945 | break; |
| 946 | case 1: |
| 947 | slot320c[slot] = |
| 948 | ctrl->timings[channel][2 * slot + 0].val_320c + |
| 949 | full_shift; |
| 950 | break; |
| 951 | case 2: |
| 952 | slot320c[slot] = |
| 953 | ctrl->timings[channel][2 * slot + 1].val_320c + |
| 954 | full_shift; |
| 955 | break; |
| 956 | case 3: |
| 957 | slot320c[slot] = |
| 958 | (ctrl->timings[channel][2 * slot].val_320c + |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 959 | ctrl->timings[channel][2 * slot + 1].val_320c) / 2 + |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 960 | full_shift; |
| 961 | break; |
| 962 | } |
| 963 | |
| 964 | /* enable CMD XOVER */ |
| 965 | reg32 = get_XOVER_CMD(ctrl->rankmap[channel]); |
| 966 | reg32 |= ((slot320c[0] & 0x3f) << 6) | ((slot320c[0] & 0x40) << 9); |
| 967 | reg32 |= (slot320c[1] & 0x7f) << 18; |
| 968 | reg32 |= (full_shift & 0x3f) | ((full_shift & 0x40) << 6); |
| 969 | |
| 970 | MCHBAR32(0x320c + 0x100 * channel) = reg32; |
| 971 | |
| 972 | /* enable CLK XOVER */ |
| 973 | reg_c14 = get_XOVER_CLK(ctrl->rankmap[channel]); |
| 974 | reg_c18 = 0; |
| 975 | |
| 976 | FOR_ALL_POPULATED_RANKS { |
| 977 | int shift = |
| 978 | ctrl->timings[channel][slotrank].val_320c + full_shift; |
| 979 | int offset_val_c14; |
| 980 | if (shift < 0) |
| 981 | shift = 0; |
| 982 | offset_val_c14 = ctrl->reg_c14_offset + shift; |
| 983 | /* set CLK phase shift */ |
| 984 | reg_c14 |= (offset_val_c14 & 0x3f) << (6 * slotrank); |
| 985 | reg_c18 |= ((offset_val_c14 >> 6) & 1) << slotrank; |
| 986 | } |
| 987 | |
| 988 | MCHBAR32(0xc14 + channel * 0x100) = reg_c14; |
| 989 | MCHBAR32(0xc18 + channel * 0x100) = reg_c18; |
| 990 | |
| 991 | reg_4028 = MCHBAR32(0x4028 + 0x400 * channel); |
| 992 | reg_4028 &= 0xffff0000; |
| 993 | |
| 994 | reg_4024 = 0; |
| 995 | |
| 996 | FOR_ALL_POPULATED_RANKS { |
| 997 | int post_timA_min_high = 7, post_timA_max_high = 0; |
| 998 | int pre_timA_min_high = 7, pre_timA_max_high = 0; |
| 999 | int shift_402x = 0; |
| 1000 | int shift = |
| 1001 | ctrl->timings[channel][slotrank].val_320c + full_shift; |
| 1002 | |
| 1003 | if (shift < 0) |
| 1004 | shift = 0; |
| 1005 | |
| 1006 | FOR_ALL_LANES { |
Arthur Heymans | abc504f | 2017-05-15 09:36:44 +0200 | [diff] [blame] | 1007 | post_timA_min_high = MIN(post_timA_min_high, |
| 1008 | (ctrl->timings[channel][slotrank].lanes[lane]. |
| 1009 | timA + shift) >> 6); |
| 1010 | pre_timA_min_high = MIN(pre_timA_min_high, |
| 1011 | ctrl->timings[channel][slotrank].lanes[lane]. |
| 1012 | timA >> 6); |
| 1013 | post_timA_max_high = MAX(post_timA_max_high, |
| 1014 | (ctrl->timings[channel][slotrank].lanes[lane]. |
| 1015 | timA + shift) >> 6); |
| 1016 | pre_timA_max_high = MAX(pre_timA_max_high, |
| 1017 | ctrl->timings[channel][slotrank].lanes[lane]. |
| 1018 | timA >> 6); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1019 | } |
| 1020 | |
| 1021 | if (pre_timA_max_high - pre_timA_min_high < |
| 1022 | post_timA_max_high - post_timA_min_high) |
| 1023 | shift_402x = +1; |
| 1024 | else if (pre_timA_max_high - pre_timA_min_high > |
| 1025 | post_timA_max_high - post_timA_min_high) |
| 1026 | shift_402x = -1; |
| 1027 | |
| 1028 | reg_4028 |= |
| 1029 | (ctrl->timings[channel][slotrank].val_4028 + shift_402x - |
| 1030 | post_timA_min_high) << (4 * slotrank); |
| 1031 | reg_4024 |= |
| 1032 | (ctrl->timings[channel][slotrank].val_4024 + |
| 1033 | shift_402x) << (8 * slotrank); |
| 1034 | |
| 1035 | FOR_ALL_LANES { |
| 1036 | MCHBAR32(lane_registers[lane] + 0x10 + 0x100 * channel + |
| 1037 | 4 * slotrank) |
| 1038 | = |
| 1039 | (((ctrl->timings[channel][slotrank].lanes[lane]. |
| 1040 | timA + shift) & 0x3f) |
| 1041 | | |
| 1042 | ((ctrl->timings[channel][slotrank].lanes[lane]. |
| 1043 | rising + shift) << 8) |
| 1044 | | |
| 1045 | (((ctrl->timings[channel][slotrank].lanes[lane]. |
| 1046 | timA + shift - |
| 1047 | (post_timA_min_high << 6)) & 0x1c0) << 10) |
| 1048 | | ((ctrl->timings[channel][slotrank].lanes[lane]. |
| 1049 | falling + shift) << 20)); |
| 1050 | |
| 1051 | MCHBAR32(lane_registers[lane] + 0x20 + 0x100 * channel + |
| 1052 | 4 * slotrank) |
| 1053 | = |
| 1054 | (((ctrl->timings[channel][slotrank].lanes[lane]. |
| 1055 | timC + shift) & 0x3f) |
| 1056 | | |
| 1057 | (((ctrl->timings[channel][slotrank].lanes[lane]. |
| 1058 | timB + shift) & 0x3f) << 8) |
| 1059 | | |
| 1060 | (((ctrl->timings[channel][slotrank].lanes[lane]. |
| 1061 | timB + shift) & 0x1c0) << 9) |
| 1062 | | |
| 1063 | (((ctrl->timings[channel][slotrank].lanes[lane]. |
| 1064 | timC + shift) & 0x40) << 13)); |
| 1065 | } |
| 1066 | } |
| 1067 | MCHBAR32(0x4024 + 0x400 * channel) = reg_4024; |
| 1068 | MCHBAR32(0x4028 + 0x400 * channel) = reg_4028; |
| 1069 | } |
| 1070 | |
| 1071 | static void test_timA(ramctr_timing * ctrl, int channel, int slotrank) |
| 1072 | { |
| 1073 | wait_428c(channel); |
| 1074 | |
| 1075 | /* DRAM command MRS |
| 1076 | * write MR3 MPR enable |
| 1077 | * in this mode only RD and RDA are allowed |
| 1078 | * all reads return a predefined pattern */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1079 | MCHBAR32(0x4220 + 0x400 * channel) = 0x1f000; |
| 1080 | MCHBAR32(0x4230 + 0x400 * channel) = (0xc01 | (ctrl->tMOD << 16)); |
| 1081 | MCHBAR32(0x4200 + 0x400 * channel) = (slotrank << 24) | 0x360004; |
| 1082 | MCHBAR32(0x4210 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1083 | |
| 1084 | /* DRAM command RD */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1085 | MCHBAR32(0x4224 + 0x400 * channel) = 0x1f105; |
| 1086 | MCHBAR32(0x4234 + 0x400 * channel) = 0x4040c01; |
| 1087 | MCHBAR32(0x4204 + 0x400 * channel) = (slotrank << 24); |
| 1088 | MCHBAR32(0x4214 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1089 | |
| 1090 | /* DRAM command RD */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1091 | MCHBAR32(0x4228 + 0x400 * channel) = 0x1f105; |
| 1092 | MCHBAR32(0x4238 + 0x400 * channel) = 0x100f | ((ctrl->CAS + 36) << 16); |
| 1093 | MCHBAR32(0x4208 + 0x400 * channel) = (slotrank << 24) | 0x60000; |
| 1094 | MCHBAR32(0x4218 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1095 | |
| 1096 | /* DRAM command MRS |
| 1097 | * write MR3 MPR disable */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1098 | MCHBAR32(0x422c + 0x400 * channel) = 0x1f000; |
| 1099 | MCHBAR32(0x423c + 0x400 * channel) = 0xc01 | (ctrl->tMOD << 16); |
| 1100 | MCHBAR32(0x420c + 0x400 * channel) = (slotrank << 24) | 0x360000; |
| 1101 | MCHBAR32(0x421c + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1102 | |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 1103 | // execute command queue |
| 1104 | MCHBAR32(0x4284 + 0x400 * channel) = RUN_QUEUE_4284(4); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1105 | |
| 1106 | wait_428c(channel); |
| 1107 | } |
| 1108 | |
| 1109 | static int does_lane_work(ramctr_timing * ctrl, int channel, int slotrank, |
| 1110 | int lane) |
| 1111 | { |
| 1112 | u32 timA = ctrl->timings[channel][slotrank].lanes[lane].timA; |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1113 | return ((MCHBAR32(lane_registers[lane] + channel * 0x100 + 4 + |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1114 | ((timA / 32) & 1) * 4) |
| 1115 | >> (timA % 32)) & 1); |
| 1116 | } |
| 1117 | |
| 1118 | struct run { |
| 1119 | int middle; |
| 1120 | int end; |
| 1121 | int start; |
| 1122 | int all; |
| 1123 | int length; |
| 1124 | }; |
| 1125 | |
| 1126 | static struct run get_longest_zero_run(int *seq, int sz) |
| 1127 | { |
| 1128 | int i, ls; |
| 1129 | int bl = 0, bs = 0; |
| 1130 | struct run ret; |
| 1131 | |
| 1132 | ls = 0; |
| 1133 | for (i = 0; i < 2 * sz; i++) |
| 1134 | if (seq[i % sz]) { |
| 1135 | if (i - ls > bl) { |
| 1136 | bl = i - ls; |
| 1137 | bs = ls; |
| 1138 | } |
| 1139 | ls = i + 1; |
| 1140 | } |
| 1141 | if (bl == 0) { |
| 1142 | ret.middle = sz / 2; |
| 1143 | ret.start = 0; |
| 1144 | ret.end = sz; |
Jacob Garber | e0c181d | 2019-04-08 22:21:43 -0600 | [diff] [blame] | 1145 | ret.length = sz; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1146 | ret.all = 1; |
| 1147 | return ret; |
| 1148 | } |
| 1149 | |
| 1150 | ret.start = bs % sz; |
| 1151 | ret.end = (bs + bl - 1) % sz; |
| 1152 | ret.middle = (bs + (bl - 1) / 2) % sz; |
| 1153 | ret.length = bl; |
| 1154 | ret.all = 0; |
| 1155 | |
| 1156 | return ret; |
| 1157 | } |
| 1158 | |
| 1159 | static void discover_timA_coarse(ramctr_timing * ctrl, int channel, |
| 1160 | int slotrank, int *upperA) |
| 1161 | { |
| 1162 | int timA; |
| 1163 | int statistics[NUM_LANES][128]; |
| 1164 | int lane; |
| 1165 | |
| 1166 | for (timA = 0; timA < 128; timA++) { |
| 1167 | FOR_ALL_LANES { |
| 1168 | ctrl->timings[channel][slotrank].lanes[lane].timA = timA; |
| 1169 | } |
| 1170 | program_timings(ctrl, channel); |
| 1171 | |
| 1172 | test_timA(ctrl, channel, slotrank); |
| 1173 | |
| 1174 | FOR_ALL_LANES { |
| 1175 | statistics[lane][timA] = |
| 1176 | !does_lane_work(ctrl, channel, slotrank, lane); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1177 | } |
| 1178 | } |
| 1179 | FOR_ALL_LANES { |
| 1180 | struct run rn = get_longest_zero_run(statistics[lane], 128); |
| 1181 | ctrl->timings[channel][slotrank].lanes[lane].timA = rn.middle; |
| 1182 | upperA[lane] = rn.end; |
| 1183 | if (upperA[lane] < rn.middle) |
| 1184 | upperA[lane] += 128; |
Patrick Rudolph | 368b615 | 2016-11-25 16:36:52 +0100 | [diff] [blame] | 1185 | printram("timA: %d, %d, %d: 0x%02x-0x%02x-0x%02x\n", |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1186 | channel, slotrank, lane, rn.start, rn.middle, rn.end); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1187 | } |
| 1188 | } |
| 1189 | |
| 1190 | static void discover_timA_fine(ramctr_timing * ctrl, int channel, int slotrank, |
| 1191 | int *upperA) |
| 1192 | { |
| 1193 | int timA_delta; |
| 1194 | int statistics[NUM_LANES][51]; |
| 1195 | int lane, i; |
| 1196 | |
| 1197 | memset(statistics, 0, sizeof(statistics)); |
| 1198 | |
| 1199 | for (timA_delta = -25; timA_delta <= 25; timA_delta++) { |
| 1200 | FOR_ALL_LANES ctrl->timings[channel][slotrank].lanes[lane]. |
| 1201 | timA = upperA[lane] + timA_delta + 0x40; |
| 1202 | program_timings(ctrl, channel); |
| 1203 | |
| 1204 | for (i = 0; i < 100; i++) { |
| 1205 | test_timA(ctrl, channel, slotrank); |
| 1206 | FOR_ALL_LANES { |
| 1207 | statistics[lane][timA_delta + 25] += |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1208 | does_lane_work(ctrl, channel, slotrank, |
| 1209 | lane); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1210 | } |
| 1211 | } |
| 1212 | } |
| 1213 | FOR_ALL_LANES { |
| 1214 | int last_zero, first_all; |
| 1215 | |
| 1216 | for (last_zero = -25; last_zero <= 25; last_zero++) |
| 1217 | if (statistics[lane][last_zero + 25]) |
| 1218 | break; |
| 1219 | last_zero--; |
| 1220 | for (first_all = -25; first_all <= 25; first_all++) |
| 1221 | if (statistics[lane][first_all + 25] == 100) |
| 1222 | break; |
| 1223 | |
| 1224 | printram("lane %d: %d, %d\n", lane, last_zero, |
| 1225 | first_all); |
| 1226 | |
| 1227 | ctrl->timings[channel][slotrank].lanes[lane].timA = |
| 1228 | (last_zero + first_all) / 2 + upperA[lane]; |
| 1229 | printram("Aval: %d, %d, %d: %x\n", channel, slotrank, |
| 1230 | lane, ctrl->timings[channel][slotrank].lanes[lane].timA); |
| 1231 | } |
| 1232 | } |
| 1233 | |
| 1234 | static int discover_402x(ramctr_timing *ctrl, int channel, int slotrank, |
| 1235 | int *upperA) |
| 1236 | { |
| 1237 | int works[NUM_LANES]; |
| 1238 | int lane; |
| 1239 | while (1) { |
| 1240 | int all_works = 1, some_works = 0; |
| 1241 | program_timings(ctrl, channel); |
| 1242 | test_timA(ctrl, channel, slotrank); |
| 1243 | FOR_ALL_LANES { |
| 1244 | works[lane] = |
| 1245 | !does_lane_work(ctrl, channel, slotrank, lane); |
| 1246 | if (works[lane]) |
| 1247 | some_works = 1; |
| 1248 | else |
| 1249 | all_works = 0; |
| 1250 | } |
| 1251 | if (all_works) |
| 1252 | return 0; |
| 1253 | if (!some_works) { |
| 1254 | if (ctrl->timings[channel][slotrank].val_4024 < 2) { |
| 1255 | printk(BIOS_EMERG, "402x discovery failed (1): %d, %d\n", |
| 1256 | channel, slotrank); |
| 1257 | return MAKE_ERR; |
| 1258 | } |
| 1259 | ctrl->timings[channel][slotrank].val_4024 -= 2; |
| 1260 | printram("4024 -= 2;\n"); |
| 1261 | continue; |
| 1262 | } |
| 1263 | ctrl->timings[channel][slotrank].val_4028 += 2; |
| 1264 | printram("4028 += 2;\n"); |
| 1265 | if (ctrl->timings[channel][slotrank].val_4028 >= 0x10) { |
| 1266 | printk(BIOS_EMERG, "402x discovery failed (2): %d, %d\n", |
| 1267 | channel, slotrank); |
| 1268 | return MAKE_ERR; |
| 1269 | } |
| 1270 | FOR_ALL_LANES if (works[lane]) { |
| 1271 | ctrl->timings[channel][slotrank].lanes[lane].timA += |
| 1272 | 128; |
| 1273 | upperA[lane] += 128; |
| 1274 | printram("increment %d, %d, %d\n", channel, |
| 1275 | slotrank, lane); |
| 1276 | } |
| 1277 | } |
| 1278 | return 0; |
| 1279 | } |
| 1280 | |
| 1281 | struct timA_minmax { |
| 1282 | int timA_min_high, timA_max_high; |
| 1283 | }; |
| 1284 | |
| 1285 | static void pre_timA_change(ramctr_timing * ctrl, int channel, int slotrank, |
| 1286 | struct timA_minmax *mnmx) |
| 1287 | { |
| 1288 | int lane; |
| 1289 | mnmx->timA_min_high = 7; |
| 1290 | mnmx->timA_max_high = 0; |
| 1291 | |
| 1292 | FOR_ALL_LANES { |
| 1293 | if (mnmx->timA_min_high > |
| 1294 | (ctrl->timings[channel][slotrank].lanes[lane].timA >> 6)) |
| 1295 | mnmx->timA_min_high = |
| 1296 | (ctrl->timings[channel][slotrank].lanes[lane]. |
| 1297 | timA >> 6); |
| 1298 | if (mnmx->timA_max_high < |
| 1299 | (ctrl->timings[channel][slotrank].lanes[lane].timA >> 6)) |
| 1300 | mnmx->timA_max_high = |
| 1301 | (ctrl->timings[channel][slotrank].lanes[lane]. |
| 1302 | timA >> 6); |
| 1303 | } |
| 1304 | } |
| 1305 | |
| 1306 | static void post_timA_change(ramctr_timing * ctrl, int channel, int slotrank, |
| 1307 | struct timA_minmax *mnmx) |
| 1308 | { |
| 1309 | struct timA_minmax post; |
| 1310 | int shift_402x = 0; |
| 1311 | |
| 1312 | /* Get changed maxima. */ |
| 1313 | pre_timA_change(ctrl, channel, slotrank, &post); |
| 1314 | |
| 1315 | if (mnmx->timA_max_high - mnmx->timA_min_high < |
| 1316 | post.timA_max_high - post.timA_min_high) |
| 1317 | shift_402x = +1; |
| 1318 | else if (mnmx->timA_max_high - mnmx->timA_min_high > |
| 1319 | post.timA_max_high - post.timA_min_high) |
| 1320 | shift_402x = -1; |
| 1321 | else |
| 1322 | shift_402x = 0; |
| 1323 | |
| 1324 | ctrl->timings[channel][slotrank].val_4028 += shift_402x; |
| 1325 | ctrl->timings[channel][slotrank].val_4024 += shift_402x; |
| 1326 | printram("4024 += %d;\n", shift_402x); |
| 1327 | printram("4028 += %d;\n", shift_402x); |
| 1328 | } |
| 1329 | |
| 1330 | /* Compensate the skew between DQS and DQs. |
| 1331 | * To ease PCB design a small skew between Data Strobe signals and |
| 1332 | * Data Signals is allowed. |
| 1333 | * The controller has to measure and compensate this skew for every byte-lane. |
| 1334 | * By delaying either all DQs signals or DQS signal, a full phase |
| 1335 | * shift can be introduced. |
| 1336 | * It is assumed that one byte-lane's DQs signals have the same routing delay. |
| 1337 | * |
| 1338 | * To measure the actual skew, the DRAM is placed in "read leveling" mode. |
| 1339 | * In read leveling mode the DRAM-chip outputs an alternating periodic pattern. |
| 1340 | * The memory controller iterates over all possible values to do a full phase shift |
| 1341 | * and issues read commands. |
| 1342 | * With DQS and DQs in phase the data read is expected to alternate on every byte: |
| 1343 | * 0xFF 0x00 0xFF ... |
| 1344 | * Once the controller has detected this pattern a bit in the result register is |
| 1345 | * set for the current phase shift. |
| 1346 | */ |
| 1347 | int read_training(ramctr_timing * ctrl) |
| 1348 | { |
| 1349 | int channel, slotrank, lane; |
| 1350 | int err; |
| 1351 | |
| 1352 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS { |
| 1353 | int all_high, some_high; |
| 1354 | int upperA[NUM_LANES]; |
| 1355 | struct timA_minmax mnmx; |
| 1356 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1357 | wait_428c(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1358 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1359 | /* DRAM command PREA */ |
| 1360 | MCHBAR32(0x4220 + 0x400 * channel) = 0x1f002; |
| 1361 | MCHBAR32(0x4230 + 0x400 * channel) = 0xc01 | (ctrl->tRP << 16); |
| 1362 | MCHBAR32(0x4200 + 0x400 * channel) = (slotrank << 24) | 0x60400; |
| 1363 | MCHBAR32(0x4210 + 0x400 * channel) = 0; |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 1364 | |
| 1365 | // execute command queue |
| 1366 | MCHBAR32(0x4284 + 0x400 * channel) = RUN_QUEUE_4284(1); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1367 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1368 | MCHBAR32(0x3400) = (slotrank << 2) | 0x8001; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1369 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1370 | ctrl->timings[channel][slotrank].val_4028 = 4; |
| 1371 | ctrl->timings[channel][slotrank].val_4024 = 55; |
| 1372 | program_timings(ctrl, channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1373 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1374 | discover_timA_coarse(ctrl, channel, slotrank, upperA); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1375 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1376 | all_high = 1; |
| 1377 | some_high = 0; |
| 1378 | FOR_ALL_LANES { |
| 1379 | if (ctrl->timings[channel][slotrank].lanes[lane].timA >= |
| 1380 | 0x40) |
| 1381 | some_high = 1; |
| 1382 | else |
| 1383 | all_high = 0; |
| 1384 | } |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1385 | |
| 1386 | if (all_high) { |
| 1387 | ctrl->timings[channel][slotrank].val_4028--; |
| 1388 | printram("4028--;\n"); |
| 1389 | FOR_ALL_LANES { |
| 1390 | ctrl->timings[channel][slotrank].lanes[lane]. |
| 1391 | timA -= 0x40; |
| 1392 | upperA[lane] -= 0x40; |
| 1393 | |
| 1394 | } |
| 1395 | } else if (some_high) { |
| 1396 | ctrl->timings[channel][slotrank].val_4024++; |
| 1397 | ctrl->timings[channel][slotrank].val_4028++; |
| 1398 | printram("4024++;\n"); |
| 1399 | printram("4028++;\n"); |
| 1400 | } |
| 1401 | |
| 1402 | program_timings(ctrl, channel); |
| 1403 | |
| 1404 | pre_timA_change(ctrl, channel, slotrank, &mnmx); |
| 1405 | |
| 1406 | err = discover_402x(ctrl, channel, slotrank, upperA); |
| 1407 | if (err) |
| 1408 | return err; |
| 1409 | |
| 1410 | post_timA_change(ctrl, channel, slotrank, &mnmx); |
| 1411 | pre_timA_change(ctrl, channel, slotrank, &mnmx); |
| 1412 | |
| 1413 | discover_timA_fine(ctrl, channel, slotrank, upperA); |
| 1414 | |
| 1415 | post_timA_change(ctrl, channel, slotrank, &mnmx); |
| 1416 | pre_timA_change(ctrl, channel, slotrank, &mnmx); |
| 1417 | |
| 1418 | FOR_ALL_LANES { |
| 1419 | ctrl->timings[channel][slotrank].lanes[lane].timA -= mnmx.timA_min_high * 0x40; |
| 1420 | } |
| 1421 | ctrl->timings[channel][slotrank].val_4028 -= mnmx.timA_min_high; |
| 1422 | printram("4028 -= %d;\n", mnmx.timA_min_high); |
| 1423 | |
| 1424 | post_timA_change(ctrl, channel, slotrank, &mnmx); |
| 1425 | |
| 1426 | printram("4/8: %d, %d, %x, %x\n", channel, slotrank, |
| 1427 | ctrl->timings[channel][slotrank].val_4024, |
| 1428 | ctrl->timings[channel][slotrank].val_4028); |
| 1429 | |
| 1430 | printram("final results:\n"); |
| 1431 | FOR_ALL_LANES |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1432 | printram("Aval: %d, %d, %d: %x\n", channel, slotrank, |
| 1433 | lane, |
| 1434 | ctrl->timings[channel][slotrank].lanes[lane].timA); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1435 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1436 | MCHBAR32(0x3400) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1437 | |
| 1438 | toggle_io_reset(); |
| 1439 | } |
| 1440 | |
| 1441 | FOR_ALL_POPULATED_CHANNELS { |
| 1442 | program_timings(ctrl, channel); |
| 1443 | } |
| 1444 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1445 | MCHBAR32(0x4080 + 0x400 * channel + 4 * lane) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1446 | } |
| 1447 | return 0; |
| 1448 | } |
| 1449 | |
| 1450 | static void test_timC(ramctr_timing * ctrl, int channel, int slotrank) |
| 1451 | { |
| 1452 | int lane; |
| 1453 | |
| 1454 | FOR_ALL_LANES { |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1455 | MCHBAR32(0x4340 + 0x400 * channel + 4 * lane) = 0; |
Elyes HAOUAS | 9c8895f | 2019-05-22 19:57:43 +0200 | [diff] [blame] | 1456 | MCHBAR32(0x4140 + 0x400 * channel + 4 * lane); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1457 | } |
| 1458 | |
| 1459 | wait_428c(channel); |
| 1460 | |
| 1461 | /* DRAM command ACT */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1462 | MCHBAR32(0x4220 + 0x400 * channel) = 0x1f006; |
| 1463 | MCHBAR32(0x4230 + 0x400 * channel) = |
Elyes HAOUAS | f97c1c9 | 2019-12-03 18:22:06 +0100 | [diff] [blame] | 1464 | (MAX((ctrl->tFAW >> 2) + 1, ctrl->tRRD) << 10) |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1465 | | 4 | (ctrl->tRCD << 16); |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1466 | MCHBAR32(0x4200 + 0x400 * channel) = (slotrank << 24) | (6 << 16); |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1467 | MCHBAR32(0x4210 + 0x400 * channel) = 0x244; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1468 | |
| 1469 | /* DRAM command NOP */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1470 | MCHBAR32(0x4224 + 0x400 * channel) = 0x1f207; |
| 1471 | MCHBAR32(0x4234 + 0x400 * channel) = 0x8041001; |
| 1472 | MCHBAR32(0x4204 + 0x400 * channel) = (slotrank << 24) | 8; |
| 1473 | MCHBAR32(0x4214 + 0x400 * channel) = 0x3e0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1474 | |
| 1475 | /* DRAM command WR */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1476 | MCHBAR32(0x4228 + 0x400 * channel) = 0x1f201; |
| 1477 | MCHBAR32(0x4238 + 0x400 * channel) = 0x80411f4; |
| 1478 | MCHBAR32(0x4208 + 0x400 * channel) = slotrank << 24; |
| 1479 | MCHBAR32(0x4218 + 0x400 * channel) = 0x242; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1480 | |
| 1481 | /* DRAM command NOP */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1482 | MCHBAR32(0x422c + 0x400 * channel) = 0x1f207; |
| 1483 | MCHBAR32(0x423c + 0x400 * channel) = |
| 1484 | 0x8000c01 | ((ctrl->CWL + ctrl->tWTR + 5) << 16); |
| 1485 | MCHBAR32(0x420c + 0x400 * channel) = (slotrank << 24) | 8; |
| 1486 | MCHBAR32(0x421c + 0x400 * channel) = 0x3e0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1487 | |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 1488 | // execute command queue |
| 1489 | MCHBAR32(0x4284 + 0x400 * channel) = RUN_QUEUE_4284(4); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1490 | |
| 1491 | wait_428c(channel); |
| 1492 | |
| 1493 | /* DRAM command PREA */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1494 | MCHBAR32(0x4220 + 0x400 * channel) = 0x1f002; |
| 1495 | MCHBAR32(0x4230 + 0x400 * channel) = 0xc01 | (ctrl->tRP << 16); |
| 1496 | MCHBAR32(0x4200 + 0x400 * channel) = (slotrank << 24) | 0x60400; |
| 1497 | MCHBAR32(0x4210 + 0x400 * channel) = 0x240; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1498 | |
| 1499 | /* DRAM command ACT */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1500 | MCHBAR32(0x4224 + 0x400 * channel) = 0x1f006; |
| 1501 | MCHBAR32(0x4234 + 0x400 * channel) = |
Elyes HAOUAS | f97c1c9 | 2019-12-03 18:22:06 +0100 | [diff] [blame] | 1502 | (MAX(ctrl->tRRD, (ctrl->tFAW >> 2) + 1) << 10) |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1503 | | 8 | (ctrl->CAS << 16); |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1504 | MCHBAR32(0x4204 + 0x400 * channel) = (slotrank << 24) | 0x60000; |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1505 | MCHBAR32(0x4214 + 0x400 * channel) = 0x244; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1506 | |
| 1507 | /* DRAM command RD */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1508 | MCHBAR32(0x4228 + 0x400 * channel) = 0x1f105; |
| 1509 | MCHBAR32(0x4238 + 0x400 * channel) = |
Elyes HAOUAS | f97c1c9 | 2019-12-03 18:22:06 +0100 | [diff] [blame] | 1510 | 0x40011f4 | (MAX(ctrl->tRTP, 8) << 16); |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1511 | MCHBAR32(0x4208 + 0x400 * channel) = (slotrank << 24); |
| 1512 | MCHBAR32(0x4218 + 0x400 * channel) = 0x242; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1513 | |
| 1514 | /* DRAM command PREA */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1515 | MCHBAR32(0x422c + 0x400 * channel) = 0x1f002; |
| 1516 | MCHBAR32(0x423c + 0x400 * channel) = 0xc01 | (ctrl->tRP << 16); |
| 1517 | MCHBAR32(0x420c + 0x400 * channel) = (slotrank << 24) | 0x60400; |
| 1518 | MCHBAR32(0x421c + 0x400 * channel) = 0x240; |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 1519 | |
| 1520 | // execute command queue |
| 1521 | MCHBAR32(0x4284 + 0x400 * channel) = RUN_QUEUE_4284(4); |
| 1522 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1523 | wait_428c(channel); |
| 1524 | } |
| 1525 | |
Tobias Diedrich | 87c4f11 | 2017-12-07 22:40:20 +0100 | [diff] [blame] | 1526 | static void timC_threshold_process(int *data, const int count) |
| 1527 | { |
| 1528 | int min = data[0]; |
| 1529 | int max = min; |
| 1530 | int i; |
| 1531 | for (i = 1; i < count; i++) { |
| 1532 | if (min > data[i]) |
| 1533 | min = data[i]; |
| 1534 | if (max < data[i]) |
| 1535 | max = data[i]; |
| 1536 | } |
| 1537 | int threshold = min/2 + max/2; |
| 1538 | for (i = 0; i < count; i++) |
| 1539 | data[i] = data[i] > threshold; |
| 1540 | printram("threshold=%d min=%d max=%d\n", |
| 1541 | threshold, min, max); |
| 1542 | } |
| 1543 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1544 | static int discover_timC(ramctr_timing *ctrl, int channel, int slotrank) |
| 1545 | { |
| 1546 | int timC; |
| 1547 | int statistics[NUM_LANES][MAX_TIMC + 1]; |
| 1548 | int lane; |
| 1549 | |
| 1550 | wait_428c(channel); |
| 1551 | |
| 1552 | /* DRAM command PREA */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1553 | MCHBAR32(0x4220 + 0x400 * channel) = 0x1f002; |
| 1554 | MCHBAR32(0x4230 + 0x400 * channel) = 0xc01 | (ctrl->tRP << 16); |
Felix Held | 9fe248f | 2018-07-31 20:59:45 +0200 | [diff] [blame] | 1555 | MCHBAR32(0x4200 + 0x400 * channel) = (slotrank << 24) | 0x60400; |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1556 | MCHBAR32(0x4210 + 0x400 * channel) = 0x240; |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 1557 | |
| 1558 | // execute command queue |
| 1559 | MCHBAR32(0x4284 + 0x400 * channel) = RUN_QUEUE_4284(1); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1560 | |
| 1561 | for (timC = 0; timC <= MAX_TIMC; timC++) { |
| 1562 | FOR_ALL_LANES ctrl->timings[channel][slotrank].lanes[lane]. |
| 1563 | timC = timC; |
| 1564 | program_timings(ctrl, channel); |
| 1565 | |
| 1566 | test_timC(ctrl, channel, slotrank); |
| 1567 | |
| 1568 | FOR_ALL_LANES { |
| 1569 | statistics[lane][timC] = |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1570 | MCHBAR32(0x4340 + 4 * lane + 0x400 * channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1571 | } |
| 1572 | } |
| 1573 | FOR_ALL_LANES { |
Tobias Diedrich | 87c4f11 | 2017-12-07 22:40:20 +0100 | [diff] [blame] | 1574 | struct run rn = get_longest_zero_run( |
| 1575 | statistics[lane], ARRAY_SIZE(statistics[lane])); |
| 1576 | if (rn.all || rn.length < 8) { |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1577 | printk(BIOS_EMERG, "timC discovery failed: %d, %d, %d\n", |
| 1578 | channel, slotrank, lane); |
Tobias Diedrich | 87c4f11 | 2017-12-07 22:40:20 +0100 | [diff] [blame] | 1579 | /* With command training not happend yet, the lane can |
| 1580 | * be erroneous. Take the avarage as reference and try |
| 1581 | * again to find a run. |
| 1582 | */ |
| 1583 | timC_threshold_process(statistics[lane], |
| 1584 | ARRAY_SIZE(statistics[lane])); |
| 1585 | rn = get_longest_zero_run(statistics[lane], |
| 1586 | ARRAY_SIZE(statistics[lane])); |
| 1587 | if (rn.all || rn.length < 8) { |
| 1588 | printk(BIOS_EMERG, "timC recovery failed\n"); |
| 1589 | return MAKE_ERR; |
| 1590 | } |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1591 | } |
Tobias Diedrich | 87c4f11 | 2017-12-07 22:40:20 +0100 | [diff] [blame] | 1592 | ctrl->timings[channel][slotrank].lanes[lane].timC = rn.middle; |
Patrick Rudolph | 368b615 | 2016-11-25 16:36:52 +0100 | [diff] [blame] | 1593 | printram("timC: %d, %d, %d: 0x%02x-0x%02x-0x%02x\n", |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1594 | channel, slotrank, lane, rn.start, rn.middle, rn.end); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1595 | } |
| 1596 | return 0; |
| 1597 | } |
| 1598 | |
| 1599 | static int get_precedening_channels(ramctr_timing * ctrl, int target_channel) |
| 1600 | { |
| 1601 | int channel, ret = 0; |
| 1602 | FOR_ALL_POPULATED_CHANNELS if (channel < target_channel) |
| 1603 | ret++; |
| 1604 | return ret; |
| 1605 | } |
| 1606 | |
| 1607 | static void fill_pattern0(ramctr_timing * ctrl, int channel, u32 a, u32 b) |
| 1608 | { |
Subrata Banik | b1434fc | 2019-03-15 22:20:41 +0530 | [diff] [blame] | 1609 | unsigned int j; |
| 1610 | unsigned int channel_offset = |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1611 | get_precedening_channels(ctrl, channel) * 0x40; |
| 1612 | for (j = 0; j < 16; j++) |
| 1613 | write32((void *)(0x04000000 + channel_offset + 4 * j), j & 2 ? b : a); |
| 1614 | sfence(); |
| 1615 | } |
| 1616 | |
| 1617 | static int num_of_channels(const ramctr_timing * ctrl) |
| 1618 | { |
| 1619 | int ret = 0; |
| 1620 | int channel; |
| 1621 | FOR_ALL_POPULATED_CHANNELS ret++; |
| 1622 | return ret; |
| 1623 | } |
| 1624 | |
| 1625 | static void fill_pattern1(ramctr_timing * ctrl, int channel) |
| 1626 | { |
Subrata Banik | b1434fc | 2019-03-15 22:20:41 +0530 | [diff] [blame] | 1627 | unsigned int j; |
| 1628 | unsigned int channel_offset = |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1629 | get_precedening_channels(ctrl, channel) * 0x40; |
Subrata Banik | b1434fc | 2019-03-15 22:20:41 +0530 | [diff] [blame] | 1630 | unsigned int channel_step = 0x40 * num_of_channels(ctrl); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1631 | for (j = 0; j < 16; j++) |
| 1632 | write32((void *)(0x04000000 + channel_offset + j * 4), 0xffffffff); |
| 1633 | for (j = 0; j < 16; j++) |
| 1634 | write32((void *)(0x04000000 + channel_offset + channel_step + j * 4), 0); |
| 1635 | sfence(); |
| 1636 | } |
| 1637 | |
| 1638 | static void precharge(ramctr_timing * ctrl) |
| 1639 | { |
| 1640 | int channel, slotrank, lane; |
| 1641 | |
| 1642 | FOR_ALL_POPULATED_CHANNELS { |
| 1643 | FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
| 1644 | ctrl->timings[channel][slotrank].lanes[lane].falling = |
| 1645 | 16; |
| 1646 | ctrl->timings[channel][slotrank].lanes[lane].rising = |
| 1647 | 16; |
| 1648 | } |
| 1649 | |
| 1650 | program_timings(ctrl, channel); |
| 1651 | |
| 1652 | FOR_ALL_POPULATED_RANKS { |
| 1653 | wait_428c(channel); |
| 1654 | |
| 1655 | /* DRAM command MRS |
| 1656 | * write MR3 MPR enable |
| 1657 | * in this mode only RD and RDA are allowed |
| 1658 | * all reads return a predefined pattern */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1659 | MCHBAR32(0x4220 + 0x400 * channel) = 0x1f000; |
| 1660 | MCHBAR32(0x4230 + 0x400 * channel) = |
| 1661 | 0xc01 | (ctrl->tMOD << 16); |
| 1662 | MCHBAR32(0x4200 + 0x400 * channel) = |
| 1663 | (slotrank << 24) | 0x360004; |
| 1664 | MCHBAR32(0x4210 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1665 | |
| 1666 | /* DRAM command RD */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1667 | MCHBAR32(0x4224 + 0x400 * channel) = 0x1f105; |
| 1668 | MCHBAR32(0x4234 + 0x400 * channel) = 0x4041003; |
| 1669 | MCHBAR32(0x4204 + 0x400 * channel) = |
| 1670 | (slotrank << 24) | 0; |
| 1671 | MCHBAR32(0x4214 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1672 | |
| 1673 | /* DRAM command RD */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1674 | MCHBAR32(0x4228 + 0x400 * channel) = 0x1f105; |
| 1675 | MCHBAR32(0x4238 + 0x400 * channel) = |
| 1676 | 0x1001 | ((ctrl->CAS + 8) << 16); |
| 1677 | MCHBAR32(0x4208 + 0x400 * channel) = |
| 1678 | (slotrank << 24) | 0x60000; |
| 1679 | MCHBAR32(0x4218 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1680 | |
| 1681 | /* DRAM command MRS |
| 1682 | * write MR3 MPR disable */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1683 | MCHBAR32(0x422c + 0x400 * channel) = 0x1f000; |
| 1684 | MCHBAR32(0x423c + 0x400 * channel) = |
| 1685 | 0xc01 | (ctrl->tMOD << 16); |
| 1686 | MCHBAR32(0x420c + 0x400 * channel) = |
| 1687 | (slotrank << 24) | 0x360000; |
| 1688 | MCHBAR32(0x421c + 0x400 * channel) = 0; |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 1689 | |
| 1690 | // execute command queue |
| 1691 | MCHBAR32(0x4284 + 0x400 * channel) = RUN_QUEUE_4284(4); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1692 | |
| 1693 | wait_428c(channel); |
| 1694 | } |
| 1695 | |
| 1696 | FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
| 1697 | ctrl->timings[channel][slotrank].lanes[lane].falling = |
| 1698 | 48; |
| 1699 | ctrl->timings[channel][slotrank].lanes[lane].rising = |
| 1700 | 48; |
| 1701 | } |
| 1702 | |
| 1703 | program_timings(ctrl, channel); |
| 1704 | |
| 1705 | FOR_ALL_POPULATED_RANKS { |
| 1706 | wait_428c(channel); |
| 1707 | /* DRAM command MRS |
| 1708 | * write MR3 MPR enable |
| 1709 | * in this mode only RD and RDA are allowed |
| 1710 | * all reads return a predefined pattern */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1711 | MCHBAR32(0x4220 + 0x400 * channel) = 0x1f000; |
| 1712 | MCHBAR32(0x4230 + 0x400 * channel) = |
| 1713 | 0xc01 | (ctrl->tMOD << 16); |
| 1714 | MCHBAR32(0x4200 + 0x400 * channel) = |
| 1715 | (slotrank << 24) | 0x360004; |
| 1716 | MCHBAR32(0x4210 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1717 | |
| 1718 | /* DRAM command RD */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1719 | MCHBAR32(0x4224 + 0x400 * channel) = 0x1f105; |
| 1720 | MCHBAR32(0x4234 + 0x400 * channel) = 0x4041003; |
| 1721 | MCHBAR32(0x4204 + 0x400 * channel) = |
| 1722 | (slotrank << 24) | 0; |
| 1723 | MCHBAR32(0x4214 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1724 | |
| 1725 | /* DRAM command RD */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1726 | MCHBAR32(0x4228 + 0x400 * channel) = 0x1f105; |
| 1727 | MCHBAR32(0x4238 + 0x400 * channel) = |
| 1728 | 0x1001 | ((ctrl->CAS + 8) << 16); |
| 1729 | MCHBAR32(0x4208 + 0x400 * channel) = |
| 1730 | (slotrank << 24) | 0x60000; |
| 1731 | MCHBAR32(0x4218 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1732 | |
| 1733 | /* DRAM command MRS |
| 1734 | * write MR3 MPR disable */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1735 | MCHBAR32(0x422c + 0x400 * channel) = 0x1f000; |
| 1736 | MCHBAR32(0x423c + 0x400 * channel) = |
| 1737 | 0xc01 | (ctrl->tMOD << 16); |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1738 | MCHBAR32(0x420c + 0x400 * channel) = |
| 1739 | (slotrank << 24) | 0x360000; |
| 1740 | MCHBAR32(0x421c + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1741 | |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 1742 | // execute command queue |
| 1743 | MCHBAR32(0x4284 + 0x400 * channel) = RUN_QUEUE_4284(4); |
| 1744 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1745 | wait_428c(channel); |
| 1746 | } |
| 1747 | } |
| 1748 | } |
| 1749 | |
| 1750 | static void test_timB(ramctr_timing * ctrl, int channel, int slotrank) |
| 1751 | { |
| 1752 | /* enable DQs on this slotrank */ |
| 1753 | write_mrreg(ctrl, channel, slotrank, 1, |
| 1754 | 0x80 | make_mr1(ctrl, slotrank, channel)); |
| 1755 | |
| 1756 | wait_428c(channel); |
| 1757 | /* DRAM command NOP */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1758 | MCHBAR32(0x4220 + 0x400 * channel) = 0x1f207; |
| 1759 | MCHBAR32(0x4230 + 0x400 * channel) = |
| 1760 | 0x8000c01 | ((ctrl->CWL + ctrl->tWLO) << 16); |
| 1761 | MCHBAR32(0x4200 + 0x400 * channel) = 8 | (slotrank << 24); |
| 1762 | MCHBAR32(0x4210 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1763 | |
| 1764 | /* DRAM command NOP */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1765 | MCHBAR32(0x4224 + 0x400 * channel) = 0x1f107; |
| 1766 | MCHBAR32(0x4234 + 0x400 * channel) = |
| 1767 | 0x4000c01 | ((ctrl->CAS + 38) << 16); |
| 1768 | MCHBAR32(0x4204 + 0x400 * channel) = (slotrank << 24) | 4; |
| 1769 | MCHBAR32(0x4214 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1770 | |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 1771 | // execute command queue |
| 1772 | MCHBAR32(0x400 * channel + 0x4284) = RUN_QUEUE_4284(2); |
| 1773 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1774 | wait_428c(channel); |
| 1775 | |
| 1776 | /* disable DQs on this slotrank */ |
| 1777 | write_mrreg(ctrl, channel, slotrank, 1, |
| 1778 | 0x1080 | make_mr1(ctrl, slotrank, channel)); |
| 1779 | } |
| 1780 | |
| 1781 | static int discover_timB(ramctr_timing *ctrl, int channel, int slotrank) |
| 1782 | { |
| 1783 | int timB; |
| 1784 | int statistics[NUM_LANES][128]; |
| 1785 | int lane; |
| 1786 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1787 | MCHBAR32(0x3400) = 0x108052 | (slotrank << 2); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1788 | |
| 1789 | for (timB = 0; timB < 128; timB++) { |
| 1790 | FOR_ALL_LANES { |
| 1791 | ctrl->timings[channel][slotrank].lanes[lane].timB = timB; |
| 1792 | } |
| 1793 | program_timings(ctrl, channel); |
| 1794 | |
| 1795 | test_timB(ctrl, channel, slotrank); |
| 1796 | |
| 1797 | FOR_ALL_LANES { |
| 1798 | statistics[lane][timB] = |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1799 | !((MCHBAR32(lane_registers[lane] + |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1800 | channel * 0x100 + 4 + ((timB / 32) & 1) * 4) |
| 1801 | >> (timB % 32)) & 1); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1802 | } |
| 1803 | } |
| 1804 | FOR_ALL_LANES { |
| 1805 | struct run rn = get_longest_zero_run(statistics[lane], 128); |
| 1806 | /* timC is a direct function of timB's 6 LSBs. |
| 1807 | * Some tests increments the value of timB by a small value, |
| 1808 | * which might cause the 6bit value to overflow, if it's close |
| 1809 | * to 0x3F. Increment the value by a small offset if it's likely |
| 1810 | * to overflow, to make sure it won't overflow while running |
| 1811 | * tests and bricks the system due to a non matching timC. |
| 1812 | * |
| 1813 | * TODO: find out why some tests (edge write discovery) |
| 1814 | * increment timB. */ |
| 1815 | if ((rn.start & 0x3F) == 0x3E) |
| 1816 | rn.start += 2; |
| 1817 | else if ((rn.start & 0x3F) == 0x3F) |
| 1818 | rn.start += 1; |
| 1819 | ctrl->timings[channel][slotrank].lanes[lane].timB = rn.start; |
| 1820 | if (rn.all) { |
| 1821 | printk(BIOS_EMERG, "timB discovery failed: %d, %d, %d\n", |
| 1822 | channel, slotrank, lane); |
| 1823 | return MAKE_ERR; |
| 1824 | } |
Patrick Rudolph | 368b615 | 2016-11-25 16:36:52 +0100 | [diff] [blame] | 1825 | printram("timB: %d, %d, %d: 0x%02x-0x%02x-0x%02x\n", |
| 1826 | channel, slotrank, lane, rn.start, rn.middle, rn.end); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1827 | } |
| 1828 | return 0; |
| 1829 | } |
| 1830 | |
| 1831 | static int get_timB_high_adjust(u64 val) |
| 1832 | { |
| 1833 | int i; |
| 1834 | |
| 1835 | /* good */ |
| 1836 | if (val == 0xffffffffffffffffLL) |
| 1837 | return 0; |
| 1838 | |
| 1839 | if (val >= 0xf000000000000000LL) { |
| 1840 | /* needs negative adjustment */ |
| 1841 | for (i = 0; i < 8; i++) |
| 1842 | if (val << (8 * (7 - i) + 4)) |
| 1843 | return -i; |
| 1844 | } else { |
| 1845 | /* needs positive adjustment */ |
| 1846 | for (i = 0; i < 8; i++) |
| 1847 | if (val >> (8 * (7 - i) + 4)) |
| 1848 | return i; |
| 1849 | } |
| 1850 | return 8; |
| 1851 | } |
| 1852 | |
| 1853 | static void adjust_high_timB(ramctr_timing * ctrl) |
| 1854 | { |
| 1855 | int channel, slotrank, lane, old; |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1856 | MCHBAR32(0x3400) = 0x200; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1857 | FOR_ALL_POPULATED_CHANNELS { |
| 1858 | fill_pattern1(ctrl, channel); |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1859 | MCHBAR32(0x4288 + (channel << 10)) = 1; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1860 | } |
| 1861 | FOR_ALL_POPULATED_CHANNELS FOR_ALL_POPULATED_RANKS { |
| 1862 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1863 | MCHBAR32(0x4288 + 0x400 * channel) = 0x10001; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1864 | |
| 1865 | wait_428c(channel); |
| 1866 | |
| 1867 | /* DRAM command ACT */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1868 | MCHBAR32(0x4220 + 0x400 * channel) = 0x1f006; |
| 1869 | MCHBAR32(0x4230 + 0x400 * channel) = 0xc01 | (ctrl->tRCD << 16); |
| 1870 | MCHBAR32(0x4200 + 0x400 * channel) = (slotrank << 24) | 0x60000; |
| 1871 | MCHBAR32(0x4210 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1872 | |
| 1873 | /* DRAM command NOP */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1874 | MCHBAR32(0x4224 + 0x400 * channel) = 0x1f207; |
| 1875 | MCHBAR32(0x4234 + 0x400 * channel) = 0x8040c01; |
| 1876 | MCHBAR32(0x4204 + 0x400 * channel) = (slotrank << 24) | 0x8; |
| 1877 | MCHBAR32(0x4214 + 0x400 * channel) = 0x3e0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1878 | |
| 1879 | /* DRAM command WR */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1880 | MCHBAR32(0x4228 + 0x400 * channel) = 0x1f201; |
| 1881 | MCHBAR32(0x4238 + 0x400 * channel) = 0x8041003; |
| 1882 | MCHBAR32(0x4208 + 0x400 * channel) = (slotrank << 24); |
| 1883 | MCHBAR32(0x4218 + 0x400 * channel) = 0x3e2; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1884 | |
| 1885 | /* DRAM command NOP */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1886 | MCHBAR32(0x422c + 0x400 * channel) = 0x1f207; |
| 1887 | MCHBAR32(0x423c + 0x400 * channel) = |
| 1888 | 0x8000c01 | ((ctrl->CWL + ctrl->tWTR + 5) << 16); |
| 1889 | MCHBAR32(0x420c + 0x400 * channel) = (slotrank << 24) | 0x8; |
| 1890 | MCHBAR32(0x421c + 0x400 * channel) = 0x3e0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1891 | |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 1892 | // execute command queue |
| 1893 | MCHBAR32(0x4284 + 0x400 * channel) = RUN_QUEUE_4284(4); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1894 | |
| 1895 | wait_428c(channel); |
| 1896 | |
| 1897 | /* DRAM command PREA */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1898 | MCHBAR32(0x4220 + 0x400 * channel) = 0x1f002; |
| 1899 | MCHBAR32(0x4230 + 0x400 * channel) = |
| 1900 | 0xc01 | ((ctrl->tRP) << 16); |
| 1901 | MCHBAR32(0x4200 + 0x400 * channel) = |
| 1902 | (slotrank << 24) | 0x60400; |
| 1903 | MCHBAR32(0x4210 + 0x400 * channel) = 0x240; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1904 | |
| 1905 | /* DRAM command ACT */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1906 | MCHBAR32(0x4224 + 0x400 * channel) = 0x1f006; |
| 1907 | MCHBAR32(0x4234 + 0x400 * channel) = |
| 1908 | 0xc01 | ((ctrl->tRCD) << 16); |
| 1909 | MCHBAR32(0x4204 + 0x400 * channel) = (slotrank << 24) | 0x60000; |
| 1910 | MCHBAR32(0x4214 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1911 | |
| 1912 | /* DRAM command RD */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1913 | MCHBAR32(0x4228 + 0x400 * channel) = 0x3f105; |
| 1914 | MCHBAR32(0x4238 + 0x400 * channel) = 0x4000c01 | ((ctrl->tRP + |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1915 | ctrl->timings[channel][slotrank].val_4024 + |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1916 | ctrl->timings[channel][slotrank].val_4028) << 16); |
| 1917 | MCHBAR32(0x4208 + 0x400 * channel) = (slotrank << 24) | 0x60008; |
| 1918 | MCHBAR32(0x4218 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1919 | |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 1920 | // execute command queue |
| 1921 | MCHBAR32(0x4284 + 0x400 * channel) = RUN_QUEUE_4284(3); |
| 1922 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1923 | wait_428c(channel); |
| 1924 | FOR_ALL_LANES { |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1925 | u64 res = MCHBAR32(lane_registers[lane] + |
| 1926 | 0x100 * channel + 4); |
| 1927 | res |= ((u64) MCHBAR32(lane_registers[lane] + |
| 1928 | 0x100 * channel + 8)) << 32; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1929 | old = ctrl->timings[channel][slotrank].lanes[lane].timB; |
| 1930 | ctrl->timings[channel][slotrank].lanes[lane].timB += |
| 1931 | get_timB_high_adjust(res) * 64; |
| 1932 | |
| 1933 | printram("High adjust %d:%016llx\n", lane, res); |
| 1934 | printram("Bval+: %d, %d, %d, %x -> %x\n", channel, |
| 1935 | slotrank, lane, old, |
| 1936 | ctrl->timings[channel][slotrank].lanes[lane]. |
| 1937 | timB); |
| 1938 | } |
| 1939 | } |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1940 | MCHBAR32(0x3400) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1941 | } |
| 1942 | |
| 1943 | static void write_op(ramctr_timing * ctrl, int channel) |
| 1944 | { |
| 1945 | int slotrank; |
| 1946 | |
| 1947 | wait_428c(channel); |
| 1948 | |
| 1949 | /* choose an existing rank. */ |
| 1950 | slotrank = !(ctrl->rankmap[channel] & 1) ? 2 : 0; |
| 1951 | |
| 1952 | /* DRAM command ACT */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1953 | MCHBAR32(0x4220 + 0x400 * channel) = 0x0f003; |
| 1954 | MCHBAR32(0x4230 + 0x400 * channel) = 0x41001; |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1955 | MCHBAR32(0x4200 + 0x400 * channel) = (slotrank << 24) | 0x60000; |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1956 | MCHBAR32(0x4210 + 0x400 * channel) = 0x3e0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1957 | |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 1958 | // execute command queue |
| 1959 | MCHBAR32(0x4284 + 0x400 * channel) = RUN_QUEUE_4284(1); |
| 1960 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1961 | wait_428c(channel); |
| 1962 | } |
| 1963 | |
| 1964 | /* Compensate the skew between CMD/ADDR/CLK and DQ/DQS lanes. |
| 1965 | * DDR3 adopted the fly-by topology. The data and strobes signals reach |
| 1966 | * the chips at different times with respect to command, address and |
| 1967 | * clock signals. |
| 1968 | * By delaying either all DQ/DQs or all CMD/ADDR/CLK signals, a full phase |
| 1969 | * shift can be introduced. |
| 1970 | * It is assumed that the CLK/ADDR/CMD signals have the same routing delay. |
| 1971 | * |
| 1972 | * To find the required phase shift the DRAM is placed in "write leveling" mode. |
| 1973 | * In this mode the DRAM-chip samples the CLK on every DQS edge and feeds back the |
| 1974 | * sampled value on the data lanes (DQs). |
| 1975 | */ |
| 1976 | int write_training(ramctr_timing * ctrl) |
| 1977 | { |
| 1978 | int channel, slotrank, lane; |
| 1979 | int err; |
| 1980 | |
| 1981 | FOR_ALL_POPULATED_CHANNELS |
Felix Held | 2463aa9 | 2018-07-29 21:37:55 +0200 | [diff] [blame] | 1982 | MCHBAR32_OR(0x4008 + 0x400 * channel, 0x8000000); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1983 | |
| 1984 | FOR_ALL_POPULATED_CHANNELS { |
| 1985 | write_op(ctrl, channel); |
Felix Held | 2463aa9 | 2018-07-29 21:37:55 +0200 | [diff] [blame] | 1986 | MCHBAR32_OR(0x4020 + 0x400 * channel, 0x200000); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1987 | } |
| 1988 | |
| 1989 | /* refresh disable */ |
Felix Held | 2463aa9 | 2018-07-29 21:37:55 +0200 | [diff] [blame] | 1990 | MCHBAR32_AND(0x5030, ~8); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1991 | FOR_ALL_POPULATED_CHANNELS { |
| 1992 | write_op(ctrl, channel); |
| 1993 | } |
| 1994 | |
| 1995 | /* enable write leveling on all ranks |
| 1996 | * disable all DQ outputs |
| 1997 | * only NOP is allowed in this mode */ |
| 1998 | FOR_ALL_CHANNELS |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1999 | FOR_ALL_POPULATED_RANKS |
| 2000 | write_mrreg(ctrl, channel, slotrank, 1, |
| 2001 | make_mr1(ctrl, slotrank, channel) | 0x1080); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2002 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2003 | MCHBAR32(0x3400) = 0x108052; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2004 | |
| 2005 | toggle_io_reset(); |
| 2006 | |
| 2007 | /* set any valid value for timB, it gets corrected later */ |
| 2008 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS { |
| 2009 | err = discover_timB(ctrl, channel, slotrank); |
| 2010 | if (err) |
| 2011 | return err; |
| 2012 | } |
| 2013 | |
| 2014 | /* disable write leveling on all ranks */ |
| 2015 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS |
| 2016 | write_mrreg(ctrl, channel, |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2017 | slotrank, 1, make_mr1(ctrl, slotrank, channel)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2018 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2019 | MCHBAR32(0x3400) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2020 | |
| 2021 | FOR_ALL_POPULATED_CHANNELS |
| 2022 | wait_428c(channel); |
| 2023 | |
| 2024 | /* refresh enable */ |
Felix Held | 2463aa9 | 2018-07-29 21:37:55 +0200 | [diff] [blame] | 2025 | MCHBAR32_OR(0x5030, 8); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2026 | |
| 2027 | FOR_ALL_POPULATED_CHANNELS { |
Felix Held | 2463aa9 | 2018-07-29 21:37:55 +0200 | [diff] [blame] | 2028 | MCHBAR32_AND(0x4020 + 0x400 * channel, ~0x00200000); |
Elyes HAOUAS | 9c8895f | 2019-05-22 19:57:43 +0200 | [diff] [blame] | 2029 | MCHBAR32(0x428c + 0x400 * channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2030 | wait_428c(channel); |
| 2031 | |
| 2032 | /* DRAM command ZQCS */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2033 | MCHBAR32(0x4220 + 0x400 * channel) = 0x0f003; |
| 2034 | MCHBAR32(0x4230 + 0x400 * channel) = 0x659001; |
| 2035 | MCHBAR32(0x4200 + 0x400 * channel) = 0x60000; |
| 2036 | MCHBAR32(0x4210 + 0x400 * channel) = 0x3e0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2037 | |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 2038 | // execute command queue |
| 2039 | MCHBAR32(0x4284 + 0x400 * channel) = RUN_QUEUE_4284(1); |
| 2040 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2041 | wait_428c(channel); |
| 2042 | } |
| 2043 | |
| 2044 | toggle_io_reset(); |
| 2045 | |
| 2046 | printram("CPE\n"); |
| 2047 | precharge(ctrl); |
| 2048 | printram("CPF\n"); |
| 2049 | |
| 2050 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
Felix Held | b802c07 | 2018-07-29 21:46:19 +0200 | [diff] [blame] | 2051 | MCHBAR32_AND(0x4080 + 0x400 * channel + 4 * lane, 0); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2052 | } |
| 2053 | |
| 2054 | FOR_ALL_POPULATED_CHANNELS { |
| 2055 | fill_pattern0(ctrl, channel, 0xaaaaaaaa, 0x55555555); |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2056 | MCHBAR32(0x4288 + (channel << 10)) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2057 | } |
| 2058 | |
| 2059 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS { |
| 2060 | err = discover_timC(ctrl, channel, slotrank); |
| 2061 | if (err) |
| 2062 | return err; |
| 2063 | } |
| 2064 | |
| 2065 | FOR_ALL_POPULATED_CHANNELS |
| 2066 | program_timings(ctrl, channel); |
| 2067 | |
| 2068 | /* measure and adjust timB timings */ |
| 2069 | adjust_high_timB(ctrl); |
| 2070 | |
| 2071 | FOR_ALL_POPULATED_CHANNELS |
| 2072 | program_timings(ctrl, channel); |
| 2073 | |
| 2074 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
Felix Held | b802c07 | 2018-07-29 21:46:19 +0200 | [diff] [blame] | 2075 | MCHBAR32_AND(0x4080 + 0x400 * channel + 4 * lane, 0); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2076 | } |
| 2077 | return 0; |
| 2078 | } |
| 2079 | |
| 2080 | static int test_320c(ramctr_timing * ctrl, int channel, int slotrank) |
| 2081 | { |
| 2082 | struct ram_rank_timings saved_rt = ctrl->timings[channel][slotrank]; |
| 2083 | int timC_delta; |
| 2084 | int lanes_ok = 0; |
| 2085 | int ctr = 0; |
| 2086 | int lane; |
| 2087 | |
| 2088 | for (timC_delta = -5; timC_delta <= 5; timC_delta++) { |
| 2089 | FOR_ALL_LANES { |
| 2090 | ctrl->timings[channel][slotrank].lanes[lane].timC = |
| 2091 | saved_rt.lanes[lane].timC + timC_delta; |
| 2092 | } |
| 2093 | program_timings(ctrl, channel); |
| 2094 | FOR_ALL_LANES { |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2095 | MCHBAR32(4 * lane + 0x4f40) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2096 | } |
| 2097 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2098 | MCHBAR32(0x4288 + 0x400 * channel) = 0x1f; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2099 | |
| 2100 | wait_428c(channel); |
| 2101 | /* DRAM command ACT */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2102 | MCHBAR32(0x4220 + 0x400 * channel) = 0x1f006; |
| 2103 | MCHBAR32(0x4230 + 0x400 * channel) = |
Elyes HAOUAS | f97c1c9 | 2019-12-03 18:22:06 +0100 | [diff] [blame] | 2104 | ((MAX(ctrl->tRRD, (ctrl->tFAW >> 2) + 1)) << 10) |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2105 | | 8 | (ctrl->tRCD << 16); |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2106 | MCHBAR32(0x4200 + 0x400 * channel) = |
| 2107 | (slotrank << 24) | ctr | 0x60000; |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2108 | MCHBAR32(0x4210 + 0x400 * channel) = 0x244; |
Felix Held | 9fe248f | 2018-07-31 20:59:45 +0200 | [diff] [blame] | 2109 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2110 | /* DRAM command WR */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2111 | MCHBAR32(0x4224 + 0x400 * channel) = 0x1f201; |
| 2112 | MCHBAR32(0x4234 + 0x400 * channel) = |
| 2113 | 0x8001020 | ((ctrl->CWL + ctrl->tWTR + 8) << 16); |
| 2114 | MCHBAR32(0x4204 + 0x400 * channel) = (slotrank << 24); |
| 2115 | MCHBAR32(0x4244 + 0x400 * channel) = 0x389abcd; |
| 2116 | MCHBAR32(0x4214 + 0x400 * channel) = 0x20e42; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2117 | |
| 2118 | /* DRAM command RD */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2119 | MCHBAR32(0x4228 + 0x400 * channel) = 0x1f105; |
| 2120 | MCHBAR32(0x4238 + 0x400 * channel) = |
Elyes HAOUAS | f97c1c9 | 2019-12-03 18:22:06 +0100 | [diff] [blame] | 2121 | 0x4001020 | (MAX(ctrl->tRTP, 8) << 16); |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2122 | MCHBAR32(0x4208 + 0x400 * channel) = (slotrank << 24); |
| 2123 | MCHBAR32(0x4248 + 0x400 * channel) = 0x389abcd; |
| 2124 | MCHBAR32(0x4218 + 0x400 * channel) = 0x20e42; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2125 | |
| 2126 | /* DRAM command PRE */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2127 | MCHBAR32(0x422c + 0x400 * channel) = 0x1f002; |
| 2128 | MCHBAR32(0x423c + 0x400 * channel) = 0xf1001; |
| 2129 | MCHBAR32(0x420c + 0x400 * channel) = (slotrank << 24) | 0x60400; |
| 2130 | MCHBAR32(0x421c + 0x400 * channel) = 0x240; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2131 | |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 2132 | // execute command queue |
| 2133 | MCHBAR32(0x4284 + 0x400 * channel) = RUN_QUEUE_4284(4); |
| 2134 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2135 | wait_428c(channel); |
| 2136 | FOR_ALL_LANES { |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2137 | u32 r32 = MCHBAR32(0x4340 + 4 * lane + 0x400 * channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2138 | |
| 2139 | if (r32 == 0) |
| 2140 | lanes_ok |= 1 << lane; |
| 2141 | } |
| 2142 | ctr++; |
| 2143 | if (lanes_ok == ((1 << NUM_LANES) - 1)) |
| 2144 | break; |
| 2145 | } |
| 2146 | |
| 2147 | ctrl->timings[channel][slotrank] = saved_rt; |
| 2148 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2149 | return lanes_ok != ((1 << NUM_LANES) - 1); |
| 2150 | } |
| 2151 | |
| 2152 | #include "raminit_patterns.h" |
| 2153 | |
| 2154 | static void fill_pattern5(ramctr_timing * ctrl, int channel, int patno) |
| 2155 | { |
Subrata Banik | b1434fc | 2019-03-15 22:20:41 +0530 | [diff] [blame] | 2156 | unsigned int i, j; |
| 2157 | unsigned int channel_offset = |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2158 | get_precedening_channels(ctrl, channel) * 0x40; |
Subrata Banik | b1434fc | 2019-03-15 22:20:41 +0530 | [diff] [blame] | 2159 | unsigned int channel_step = 0x40 * num_of_channels(ctrl); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2160 | |
| 2161 | if (patno) { |
| 2162 | u8 base8 = 0x80 >> ((patno - 1) % 8); |
| 2163 | u32 base = base8 | (base8 << 8) | (base8 << 16) | (base8 << 24); |
| 2164 | for (i = 0; i < 32; i++) { |
| 2165 | for (j = 0; j < 16; j++) { |
| 2166 | u32 val = use_base[patno - 1][i] & (1 << (j / 2)) ? base : 0; |
| 2167 | if (invert[patno - 1][i] & (1 << (j / 2))) |
| 2168 | val = ~val; |
| 2169 | write32((void *)(0x04000000 + channel_offset + i * channel_step + |
| 2170 | j * 4), val); |
| 2171 | } |
| 2172 | } |
| 2173 | |
| 2174 | } else { |
| 2175 | for (i = 0; i < sizeof(pattern) / sizeof(pattern[0]); i++) { |
| 2176 | for (j = 0; j < 16; j++) |
| 2177 | write32((void *)(0x04000000 + channel_offset + i * channel_step + |
| 2178 | j * 4), pattern[i][j]); |
| 2179 | } |
| 2180 | sfence(); |
| 2181 | } |
| 2182 | } |
| 2183 | |
| 2184 | static void reprogram_320c(ramctr_timing * ctrl) |
| 2185 | { |
| 2186 | int channel, slotrank; |
| 2187 | |
| 2188 | FOR_ALL_POPULATED_CHANNELS { |
| 2189 | wait_428c(channel); |
| 2190 | |
| 2191 | /* choose an existing rank. */ |
| 2192 | slotrank = !(ctrl->rankmap[channel] & 1) ? 2 : 0; |
| 2193 | |
| 2194 | /* DRAM command ZQCS */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2195 | MCHBAR32(0x4220 + 0x400 * channel) = 0x0f003; |
| 2196 | MCHBAR32(0x4230 + 0x400 * channel) = 0x41001; |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2197 | MCHBAR32(0x4200 + 0x400 * channel) = (slotrank << 24) | 0x60000; |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2198 | MCHBAR32(0x4210 + 0x400 * channel) = 0x3e0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2199 | |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 2200 | // execute command queue |
| 2201 | MCHBAR32(0x4284 + 0x400 * channel) = RUN_QUEUE_4284(1); |
| 2202 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2203 | wait_428c(channel); |
Felix Held | 2463aa9 | 2018-07-29 21:37:55 +0200 | [diff] [blame] | 2204 | MCHBAR32_OR(0x4020 + 0x400 * channel, 0x200000); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2205 | } |
| 2206 | |
| 2207 | /* refresh disable */ |
Felix Held | 2463aa9 | 2018-07-29 21:37:55 +0200 | [diff] [blame] | 2208 | MCHBAR32_AND(0x5030, ~8); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2209 | FOR_ALL_POPULATED_CHANNELS { |
| 2210 | wait_428c(channel); |
| 2211 | |
| 2212 | /* choose an existing rank. */ |
| 2213 | slotrank = !(ctrl->rankmap[channel] & 1) ? 2 : 0; |
| 2214 | |
| 2215 | /* DRAM command ZQCS */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2216 | MCHBAR32(0x4220 + 0x400 * channel) = 0x0f003; |
| 2217 | MCHBAR32(0x4230 + 0x400 * channel) = 0x41001; |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2218 | MCHBAR32(0x4200 + 0x400 * channel) = (slotrank << 24) | 0x60000; |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2219 | MCHBAR32(0x4210 + 0x400 * channel) = 0x3e0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2220 | |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 2221 | // execute command queue |
| 2222 | MCHBAR32(0x4284 + 0x400 * channel) = RUN_QUEUE_4284(1); |
| 2223 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2224 | wait_428c(channel); |
| 2225 | } |
| 2226 | |
| 2227 | /* jedec reset */ |
| 2228 | dram_jedecreset(ctrl); |
| 2229 | /* mrs commands. */ |
| 2230 | dram_mrscommands(ctrl); |
| 2231 | |
| 2232 | toggle_io_reset(); |
| 2233 | } |
| 2234 | |
| 2235 | #define MIN_C320C_LEN 13 |
| 2236 | |
| 2237 | static int try_cmd_stretch(ramctr_timing *ctrl, int channel, int cmd_stretch) |
| 2238 | { |
| 2239 | struct ram_rank_timings saved_timings[NUM_CHANNELS][NUM_SLOTRANKS]; |
| 2240 | int slotrank; |
| 2241 | int c320c; |
| 2242 | int stat[NUM_SLOTRANKS][256]; |
| 2243 | int delta = 0; |
| 2244 | |
| 2245 | printram("Trying cmd_stretch %d on channel %d\n", cmd_stretch, channel); |
| 2246 | |
| 2247 | FOR_ALL_POPULATED_RANKS { |
| 2248 | saved_timings[channel][slotrank] = |
| 2249 | ctrl->timings[channel][slotrank]; |
| 2250 | } |
| 2251 | |
| 2252 | ctrl->cmd_stretch[channel] = cmd_stretch; |
| 2253 | |
| 2254 | MCHBAR32(0x4004 + 0x400 * channel) = |
| 2255 | ctrl->tRRD |
| 2256 | | (ctrl->tRTP << 4) |
| 2257 | | (ctrl->tCKE << 8) |
| 2258 | | (ctrl->tWTR << 12) |
| 2259 | | (ctrl->tFAW << 16) |
| 2260 | | (ctrl->tWR << 24) |
| 2261 | | (ctrl->cmd_stretch[channel] << 30); |
| 2262 | |
| 2263 | if (ctrl->cmd_stretch[channel] == 2) |
| 2264 | delta = 2; |
| 2265 | else if (ctrl->cmd_stretch[channel] == 0) |
| 2266 | delta = 4; |
| 2267 | |
| 2268 | FOR_ALL_POPULATED_RANKS { |
| 2269 | ctrl->timings[channel][slotrank].val_4024 -= delta; |
| 2270 | } |
| 2271 | |
| 2272 | for (c320c = -127; c320c <= 127; c320c++) { |
| 2273 | FOR_ALL_POPULATED_RANKS { |
| 2274 | ctrl->timings[channel][slotrank].val_320c = c320c; |
| 2275 | } |
| 2276 | program_timings(ctrl, channel); |
| 2277 | reprogram_320c(ctrl); |
| 2278 | FOR_ALL_POPULATED_RANKS { |
| 2279 | stat[slotrank][c320c + 127] = |
| 2280 | test_320c(ctrl, channel, slotrank); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2281 | } |
| 2282 | } |
| 2283 | FOR_ALL_POPULATED_RANKS { |
| 2284 | struct run rn = |
| 2285 | get_longest_zero_run(stat[slotrank], 255); |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2286 | ctrl->timings[channel][slotrank].val_320c = rn.middle - 127; |
Patrick Rudolph | 368b615 | 2016-11-25 16:36:52 +0100 | [diff] [blame] | 2287 | printram("cmd_stretch: %d, %d: 0x%02x-0x%02x-0x%02x\n", |
| 2288 | channel, slotrank, rn.start, rn.middle, rn.end); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2289 | if (rn.all || rn.length < MIN_C320C_LEN) { |
| 2290 | FOR_ALL_POPULATED_RANKS { |
| 2291 | ctrl->timings[channel][slotrank] = |
| 2292 | saved_timings[channel][slotrank]; |
| 2293 | } |
| 2294 | return MAKE_ERR; |
| 2295 | } |
| 2296 | } |
| 2297 | |
| 2298 | return 0; |
| 2299 | } |
| 2300 | |
| 2301 | /* Adjust CMD phase shift and try multiple command rates. |
| 2302 | * A command rate of 2T doubles the time needed for address and |
| 2303 | * command decode. */ |
| 2304 | int command_training(ramctr_timing *ctrl) |
| 2305 | { |
| 2306 | int channel; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2307 | |
| 2308 | FOR_ALL_POPULATED_CHANNELS { |
| 2309 | fill_pattern5(ctrl, channel, 0); |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2310 | MCHBAR32(0x4288 + 0x400 * channel) = 0x1f; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2311 | } |
| 2312 | |
| 2313 | FOR_ALL_POPULATED_CHANNELS { |
Patrick Rudolph | 58d16af | 2017-06-19 19:33:12 +0200 | [diff] [blame] | 2314 | int cmdrate, err; |
| 2315 | |
| 2316 | /* |
| 2317 | * Dual DIMM per channel: |
| 2318 | * Issue: While c320c discovery seems to succeed raminit |
| 2319 | * will fail in write training. |
| 2320 | * Workaround: Skip 1T in dual DIMM mode, that's only |
| 2321 | * supported by a few DIMMs. |
Dan Elkouby | dabebc3 | 2018-04-13 18:47:10 +0300 | [diff] [blame] | 2322 | * Only try 1T mode for XMP DIMMs that request it in dual DIMM |
| 2323 | * mode. |
Patrick Rudolph | 58d16af | 2017-06-19 19:33:12 +0200 | [diff] [blame] | 2324 | * |
| 2325 | * Single DIMM per channel: |
| 2326 | * Try command rate 1T and 2T |
| 2327 | */ |
| 2328 | cmdrate = ((ctrl->rankmap[channel] & 0x5) == 0x5); |
Dan Elkouby | dabebc3 | 2018-04-13 18:47:10 +0300 | [diff] [blame] | 2329 | if (ctrl->tCMD) |
| 2330 | /* XMP gives the CMD rate in clock ticks, not ns */ |
| 2331 | cmdrate = MIN(DIV_ROUND_UP(ctrl->tCMD, 256) - 1, 1); |
Patrick Rudolph | 58d16af | 2017-06-19 19:33:12 +0200 | [diff] [blame] | 2332 | |
Elyes HAOUAS | adda3f81 | 2018-01-31 23:02:35 +0100 | [diff] [blame] | 2333 | for (; cmdrate < 2; cmdrate++) { |
Patrick Rudolph | 58d16af | 2017-06-19 19:33:12 +0200 | [diff] [blame] | 2334 | err = try_cmd_stretch(ctrl, channel, cmdrate << 1); |
| 2335 | |
| 2336 | if (!err) |
| 2337 | break; |
| 2338 | } |
| 2339 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2340 | if (err) { |
Patrick Rudolph | 58d16af | 2017-06-19 19:33:12 +0200 | [diff] [blame] | 2341 | printk(BIOS_EMERG, "c320c discovery failed\n"); |
| 2342 | return err; |
| 2343 | } |
| 2344 | |
| 2345 | printram("Using CMD rate %uT on channel %u\n", |
| 2346 | cmdrate + 1, channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2347 | } |
| 2348 | |
| 2349 | FOR_ALL_POPULATED_CHANNELS |
| 2350 | program_timings(ctrl, channel); |
| 2351 | |
| 2352 | reprogram_320c(ctrl); |
| 2353 | return 0; |
| 2354 | } |
| 2355 | |
| 2356 | |
| 2357 | static int discover_edges_real(ramctr_timing *ctrl, int channel, int slotrank, |
| 2358 | int *edges) |
| 2359 | { |
| 2360 | int edge; |
| 2361 | int statistics[NUM_LANES][MAX_EDGE_TIMING + 1]; |
| 2362 | int lane; |
| 2363 | |
| 2364 | for (edge = 0; edge <= MAX_EDGE_TIMING; edge++) { |
| 2365 | FOR_ALL_LANES { |
| 2366 | ctrl->timings[channel][slotrank].lanes[lane].rising = |
| 2367 | edge; |
| 2368 | ctrl->timings[channel][slotrank].lanes[lane].falling = |
| 2369 | edge; |
| 2370 | } |
| 2371 | program_timings(ctrl, channel); |
| 2372 | |
| 2373 | FOR_ALL_LANES { |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2374 | MCHBAR32(0x4340 + 0x400 * channel + 4 * lane) = 0; |
Elyes HAOUAS | 9c8895f | 2019-05-22 19:57:43 +0200 | [diff] [blame] | 2375 | MCHBAR32(0x400 * channel + 4 * lane + 0x4140); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2376 | } |
| 2377 | |
| 2378 | wait_428c(channel); |
| 2379 | /* DRAM command MRS |
| 2380 | * write MR3 MPR enable |
| 2381 | * in this mode only RD and RDA are allowed |
| 2382 | * all reads return a predefined pattern */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2383 | MCHBAR32(0x4220 + 0x400 * channel) = 0x1f000; |
Felix Held | 2463aa9 | 2018-07-29 21:37:55 +0200 | [diff] [blame] | 2384 | MCHBAR32(0x4230 + 0x400 * channel) = 0xc01 | (ctrl->tMOD << 16); |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2385 | MCHBAR32(0x4200 + 0x400 * channel) = |
| 2386 | (slotrank << 24) | 0x360004; |
| 2387 | MCHBAR32(0x4210 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2388 | |
| 2389 | /* DRAM command RD */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2390 | MCHBAR32(0x4224 + 0x400 * channel) = 0x1f105; |
| 2391 | MCHBAR32(0x4234 + 0x400 * channel) = 0x40411f4; |
| 2392 | MCHBAR32(0x4204 + 0x400 * channel) = slotrank << 24; |
| 2393 | MCHBAR32(0x4214 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2394 | |
| 2395 | /* DRAM command RD */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2396 | MCHBAR32(0x4228 + 0x400 * channel) = 0x1f105; |
| 2397 | MCHBAR32(0x4238 + 0x400 * channel) = |
| 2398 | 0x1001 | ((ctrl->CAS + 8) << 16); |
| 2399 | MCHBAR32(0x4208 + 0x400 * channel) = (slotrank << 24) | 0x60000; |
| 2400 | MCHBAR32(0x4218 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2401 | |
| 2402 | /* DRAM command MRS |
| 2403 | * MR3 disable MPR */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2404 | MCHBAR32(0x422c + 0x400 * channel) = 0x1f000; |
| 2405 | MCHBAR32(0x423c + 0x400 * channel) = 0xc01 | (ctrl->tMOD << 16); |
| 2406 | MCHBAR32(0x420c + 0x400 * channel) = |
| 2407 | (slotrank << 24) | 0x360000; |
| 2408 | MCHBAR32(0x421c + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2409 | |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 2410 | // execute command queue |
| 2411 | MCHBAR32(0x4284 + 0x400 * channel) = RUN_QUEUE_4284(4); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2412 | |
| 2413 | wait_428c(channel); |
| 2414 | |
| 2415 | FOR_ALL_LANES { |
| 2416 | statistics[lane][edge] = |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2417 | MCHBAR32(0x4340 + 0x400 * channel + lane * 4); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2418 | } |
| 2419 | } |
| 2420 | FOR_ALL_LANES { |
| 2421 | struct run rn = |
| 2422 | get_longest_zero_run(statistics[lane], MAX_EDGE_TIMING + 1); |
| 2423 | edges[lane] = rn.middle; |
| 2424 | if (rn.all) { |
| 2425 | printk(BIOS_EMERG, "edge discovery failed: %d, %d, %d\n", |
| 2426 | channel, slotrank, lane); |
| 2427 | return MAKE_ERR; |
| 2428 | } |
| 2429 | printram("eval %d, %d, %d: %02x\n", channel, slotrank, |
| 2430 | lane, edges[lane]); |
| 2431 | } |
| 2432 | return 0; |
| 2433 | } |
| 2434 | |
| 2435 | int discover_edges(ramctr_timing *ctrl) |
| 2436 | { |
| 2437 | int falling_edges[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES]; |
| 2438 | int rising_edges[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES]; |
| 2439 | int channel, slotrank, lane; |
| 2440 | int err; |
| 2441 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2442 | MCHBAR32(0x3400) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2443 | |
| 2444 | toggle_io_reset(); |
| 2445 | |
| 2446 | FOR_ALL_POPULATED_CHANNELS FOR_ALL_LANES { |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2447 | MCHBAR32(4 * lane + 0x400 * channel + 0x4080) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2448 | } |
| 2449 | |
| 2450 | FOR_ALL_POPULATED_CHANNELS { |
| 2451 | fill_pattern0(ctrl, channel, 0, 0); |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2452 | MCHBAR32(0x4288 + (channel << 10)) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2453 | FOR_ALL_LANES { |
Elyes HAOUAS | 9c8895f | 2019-05-22 19:57:43 +0200 | [diff] [blame] | 2454 | MCHBAR32(0x400 * channel + lane * 4 + 0x4140); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2455 | } |
| 2456 | |
| 2457 | FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
| 2458 | ctrl->timings[channel][slotrank].lanes[lane].falling = |
| 2459 | 16; |
| 2460 | ctrl->timings[channel][slotrank].lanes[lane].rising = |
| 2461 | 16; |
| 2462 | } |
| 2463 | |
| 2464 | program_timings(ctrl, channel); |
| 2465 | |
| 2466 | FOR_ALL_POPULATED_RANKS { |
| 2467 | wait_428c(channel); |
| 2468 | |
| 2469 | /* DRAM command MRS |
| 2470 | * MR3 enable MPR |
| 2471 | * write MR3 MPR enable |
| 2472 | * in this mode only RD and RDA are allowed |
| 2473 | * all reads return a predefined pattern */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2474 | MCHBAR32(0x4220 + 0x400 * channel) = 0x1f000; |
| 2475 | MCHBAR32(0x4230 + 0x400 * channel) = |
| 2476 | 0xc01 | (ctrl->tMOD << 16); |
| 2477 | MCHBAR32(0x4200 + 0x400 * channel) = |
| 2478 | (slotrank << 24) | 0x360004; |
| 2479 | MCHBAR32(0x4210 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2480 | |
| 2481 | /* DRAM command RD */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2482 | MCHBAR32(0x4224 + 0x400 * channel) = 0x1f105; |
| 2483 | MCHBAR32(0x4234 + 0x400 * channel) = 0x4041003; |
| 2484 | MCHBAR32(0x4204 + 0x400 * channel) = |
| 2485 | (slotrank << 24) | 0; |
| 2486 | MCHBAR32(0x4214 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2487 | |
| 2488 | /* DRAM command RD */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2489 | MCHBAR32(0x4228 + 0x400 * channel) = 0x1f105; |
| 2490 | MCHBAR32(0x4238 + 0x400 * channel) = |
| 2491 | 0x1001 | ((ctrl->CAS + 8) << 16); |
| 2492 | MCHBAR32(0x4208 + 0x400 * channel) = |
| 2493 | (slotrank << 24) | 0x60000; |
| 2494 | MCHBAR32(0x4218 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2495 | |
| 2496 | /* DRAM command MRS |
| 2497 | * MR3 disable MPR */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2498 | MCHBAR32(0x422c + 0x400 * channel) = 0x1f000; |
| 2499 | MCHBAR32(0x423c + 0x400 * channel) = |
| 2500 | 0xc01 | (ctrl->tMOD << 16); |
| 2501 | MCHBAR32(0x420c + 0x400 * channel) = |
| 2502 | (slotrank << 24) | 0x360000; |
| 2503 | MCHBAR32(0x421c + 0x400 * channel) = 0; |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 2504 | |
| 2505 | // execute command queue |
| 2506 | MCHBAR32(0x4284 + 0x400 * channel) = RUN_QUEUE_4284(4); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2507 | |
| 2508 | wait_428c(channel); |
| 2509 | } |
| 2510 | |
| 2511 | /* XXX: check any measured value ? */ |
| 2512 | |
| 2513 | FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
| 2514 | ctrl->timings[channel][slotrank].lanes[lane].falling = |
| 2515 | 48; |
| 2516 | ctrl->timings[channel][slotrank].lanes[lane].rising = |
| 2517 | 48; |
| 2518 | } |
| 2519 | |
| 2520 | program_timings(ctrl, channel); |
| 2521 | |
| 2522 | FOR_ALL_POPULATED_RANKS { |
| 2523 | wait_428c(channel); |
| 2524 | |
| 2525 | /* DRAM command MRS |
| 2526 | * MR3 enable MPR |
| 2527 | * write MR3 MPR enable |
| 2528 | * in this mode only RD and RDA are allowed |
| 2529 | * all reads return a predefined pattern */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2530 | MCHBAR32(0x4220 + 0x400 * channel) = 0x1f000; |
| 2531 | MCHBAR32(0x4230 + 0x400 * channel) = |
| 2532 | 0xc01 | (ctrl->tMOD << 16); |
| 2533 | MCHBAR32(0x4200 + 0x400 * channel) = |
| 2534 | (slotrank << 24) | 0x360004; |
| 2535 | MCHBAR32(0x4210 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2536 | |
| 2537 | /* DRAM command RD */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2538 | MCHBAR32(0x4224 + 0x400 * channel) = 0x1f105; |
| 2539 | MCHBAR32(0x4234 + 0x400 * channel) = 0x4041003; |
| 2540 | MCHBAR32(0x4204 + 0x400 * channel) = |
| 2541 | (slotrank << 24) | 0; |
| 2542 | MCHBAR32(0x4214 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2543 | |
| 2544 | /* DRAM command RD */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2545 | MCHBAR32(0x4228 + 0x400 * channel) = 0x1f105; |
| 2546 | MCHBAR32(0x4238 + 0x400 * channel) = |
| 2547 | 0x1001 | ((ctrl->CAS + 8) << 16); |
| 2548 | MCHBAR32(0x4208 + 0x400 * channel) = |
| 2549 | (slotrank << 24) | 0x60000; |
| 2550 | MCHBAR32(0x4218 + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2551 | |
| 2552 | /* DRAM command MRS |
| 2553 | * MR3 disable MPR */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2554 | MCHBAR32(0x422c + 0x400 * channel) = 0x1f000; |
| 2555 | MCHBAR32(0x423c + 0x400 * channel) = |
| 2556 | 0xc01 | (ctrl->tMOD << 16); |
| 2557 | MCHBAR32(0x420c + 0x400 * channel) = |
| 2558 | (slotrank << 24) | 0x360000; |
| 2559 | MCHBAR32(0x421c + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2560 | |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 2561 | // execute command queue |
| 2562 | MCHBAR32(0x4284 + 0x400 * channel) = RUN_QUEUE_4284(4); |
| 2563 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2564 | wait_428c(channel); |
| 2565 | } |
| 2566 | |
| 2567 | /* XXX: check any measured value ? */ |
| 2568 | |
| 2569 | FOR_ALL_LANES { |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2570 | MCHBAR32(0x4080 + 0x400 * channel + lane * 4) = |
| 2571 | ~MCHBAR32(0x4040 + 0x400 * channel + lane * 4) |
| 2572 | & 0xff; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2573 | } |
| 2574 | |
| 2575 | fill_pattern0(ctrl, channel, 0, 0xffffffff); |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2576 | MCHBAR32(0x4288 + (channel << 10)) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2577 | } |
| 2578 | |
| 2579 | /* FIXME: under some conditions (older chipsets?) vendor BIOS sets both edges to the same value. */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2580 | MCHBAR32(0x4eb0) = 0x300; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2581 | printram("discover falling edges:\n[%x] = %x\n", 0x4eb0, 0x300); |
| 2582 | |
| 2583 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS { |
| 2584 | err = discover_edges_real(ctrl, channel, slotrank, |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2585 | falling_edges[channel][slotrank]); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2586 | if (err) |
| 2587 | return err; |
| 2588 | } |
| 2589 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2590 | MCHBAR32(0x4eb0) = 0x200; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2591 | printram("discover rising edges:\n[%x] = %x\n", 0x4eb0, 0x200); |
| 2592 | |
| 2593 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS { |
| 2594 | err = discover_edges_real(ctrl, channel, slotrank, |
| 2595 | rising_edges[channel][slotrank]); |
| 2596 | if (err) |
| 2597 | return err; |
| 2598 | } |
| 2599 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2600 | MCHBAR32(0x4eb0) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2601 | |
| 2602 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
| 2603 | ctrl->timings[channel][slotrank].lanes[lane].falling = |
| 2604 | falling_edges[channel][slotrank][lane]; |
| 2605 | ctrl->timings[channel][slotrank].lanes[lane].rising = |
| 2606 | rising_edges[channel][slotrank][lane]; |
| 2607 | } |
| 2608 | |
| 2609 | FOR_ALL_POPULATED_CHANNELS { |
| 2610 | program_timings(ctrl, channel); |
| 2611 | } |
| 2612 | |
| 2613 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2614 | MCHBAR32(0x4080 + 0x400 * channel + 4 * lane) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2615 | } |
| 2616 | return 0; |
| 2617 | } |
| 2618 | |
| 2619 | static int discover_edges_write_real(ramctr_timing *ctrl, int channel, |
| 2620 | int slotrank, int *edges) |
| 2621 | { |
| 2622 | int edge; |
| 2623 | u32 raw_statistics[MAX_EDGE_TIMING + 1]; |
| 2624 | int statistics[MAX_EDGE_TIMING + 1]; |
| 2625 | const int reg3000b24[] = { 0, 0xc, 0x2c }; |
| 2626 | int lane, i; |
| 2627 | int lower[NUM_LANES]; |
| 2628 | int upper[NUM_LANES]; |
| 2629 | int pat; |
| 2630 | |
| 2631 | FOR_ALL_LANES { |
| 2632 | lower[lane] = 0; |
| 2633 | upper[lane] = MAX_EDGE_TIMING; |
| 2634 | } |
| 2635 | |
| 2636 | for (i = 0; i < 3; i++) { |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2637 | MCHBAR32(0x3000 + 0x100 * channel) = reg3000b24[i] << 24; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2638 | printram("[%x] = 0x%08x\n", |
| 2639 | 0x3000 + 0x100 * channel, reg3000b24[i] << 24); |
| 2640 | for (pat = 0; pat < NUM_PATTERNS; pat++) { |
| 2641 | fill_pattern5(ctrl, channel, pat); |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2642 | MCHBAR32(0x4288 + 0x400 * channel) = 0x1f; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2643 | printram("using pattern %d\n", pat); |
| 2644 | for (edge = 0; edge <= MAX_EDGE_TIMING; edge++) { |
| 2645 | FOR_ALL_LANES { |
| 2646 | ctrl->timings[channel][slotrank].lanes[lane]. |
| 2647 | rising = edge; |
| 2648 | ctrl->timings[channel][slotrank].lanes[lane]. |
| 2649 | falling = edge; |
| 2650 | } |
| 2651 | program_timings(ctrl, channel); |
| 2652 | |
| 2653 | FOR_ALL_LANES { |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2654 | MCHBAR32(0x4340 + 0x400 * channel + |
| 2655 | 4 * lane) = 0; |
Elyes HAOUAS | 9c8895f | 2019-05-22 19:57:43 +0200 | [diff] [blame] | 2656 | MCHBAR32(0x400 * channel + |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2657 | 4 * lane + 0x4140); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2658 | } |
| 2659 | wait_428c(channel); |
| 2660 | |
| 2661 | /* DRAM command ACT */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2662 | MCHBAR32(0x4220 + 0x400 * channel) = 0x1f006; |
| 2663 | MCHBAR32(0x4230 + 0x400 * channel) = |
| 2664 | 0x4 | (ctrl->tRCD << 16) | |
Elyes HAOUAS | f97c1c9 | 2019-12-03 18:22:06 +0100 | [diff] [blame] | 2665 | (MAX(ctrl->tRRD, (ctrl->tFAW >> 2) + 1) |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2666 | << 10); |
| 2667 | MCHBAR32(0x4200 + 0x400 * channel) = |
| 2668 | (slotrank << 24) | 0x60000; |
| 2669 | MCHBAR32(0x4210 + 0x400 * channel) = 0x240; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2670 | |
| 2671 | /* DRAM command WR */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2672 | MCHBAR32(0x4224 + 0x400 * channel) = 0x1f201; |
| 2673 | MCHBAR32(0x4234 + 0x400 * channel) = 0x8005020 | |
| 2674 | ((ctrl->tWTR + ctrl->CWL + 8) << 16); |
| 2675 | MCHBAR32(0x4204 + 0x400 * channel) = |
| 2676 | slotrank << 24; |
| 2677 | MCHBAR32(0x4214 + 0x400 * channel) = 0x242; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2678 | |
| 2679 | /* DRAM command RD */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2680 | MCHBAR32(0x4228 + 0x400 * channel) = 0x1f105; |
| 2681 | MCHBAR32(0x4238 + 0x400 * channel) = |
Elyes HAOUAS | f97c1c9 | 2019-12-03 18:22:06 +0100 | [diff] [blame] | 2682 | 0x4005020 | (MAX(ctrl->tRTP, 8) << 16); |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2683 | MCHBAR32(0x4208 + 0x400 * channel) = |
| 2684 | slotrank << 24; |
| 2685 | MCHBAR32(0x4218 + 0x400 * channel) = 0x242; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2686 | |
| 2687 | /* DRAM command PRE */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2688 | MCHBAR32(0x422c + 0x400 * channel) = 0x1f002; |
| 2689 | MCHBAR32(0x423c + 0x400 * channel) = |
| 2690 | 0xc01 | (ctrl->tRP << 16); |
| 2691 | MCHBAR32(0x420c + 0x400 * channel) = |
| 2692 | (slotrank << 24) | 0x60400; |
| 2693 | MCHBAR32(0x421c + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2694 | |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 2695 | // execute command queue |
| 2696 | MCHBAR32(0x4284 + 0x400 * channel) = |
| 2697 | RUN_QUEUE_4284(4); |
| 2698 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2699 | wait_428c(channel); |
| 2700 | FOR_ALL_LANES { |
Elyes HAOUAS | 9c8895f | 2019-05-22 19:57:43 +0200 | [diff] [blame] | 2701 | MCHBAR32(0x4340 + |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2702 | 0x400 * channel + lane * 4); |
| 2703 | } |
| 2704 | |
| 2705 | raw_statistics[edge] = |
| 2706 | MCHBAR32(0x436c + 0x400 * channel); |
| 2707 | } |
| 2708 | FOR_ALL_LANES { |
| 2709 | struct run rn; |
| 2710 | for (edge = 0; edge <= MAX_EDGE_TIMING; edge++) |
| 2711 | statistics[edge] = |
| 2712 | ! !(raw_statistics[edge] & (1 << lane)); |
| 2713 | rn = get_longest_zero_run(statistics, |
| 2714 | MAX_EDGE_TIMING + 1); |
| 2715 | printram("edges: %d, %d, %d: 0x%02x-0x%02x-0x%02x, 0x%02x-0x%02x\n", |
| 2716 | channel, slotrank, i, rn.start, rn.middle, |
| 2717 | rn.end, rn.start + ctrl->edge_offset[i], |
| 2718 | rn.end - ctrl->edge_offset[i]); |
| 2719 | lower[lane] = |
Elyes HAOUAS | f97c1c9 | 2019-12-03 18:22:06 +0100 | [diff] [blame] | 2720 | MAX(rn.start + ctrl->edge_offset[i], lower[lane]); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2721 | upper[lane] = |
Elyes HAOUAS | f97c1c9 | 2019-12-03 18:22:06 +0100 | [diff] [blame] | 2722 | MIN(rn.end - ctrl->edge_offset[i], upper[lane]); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2723 | edges[lane] = (lower[lane] + upper[lane]) / 2; |
| 2724 | if (rn.all || (lower[lane] > upper[lane])) { |
| 2725 | printk(BIOS_EMERG, "edge write discovery failed: %d, %d, %d\n", |
| 2726 | channel, slotrank, lane); |
| 2727 | return MAKE_ERR; |
| 2728 | } |
| 2729 | } |
| 2730 | } |
| 2731 | } |
| 2732 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2733 | MCHBAR32(0x3000) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2734 | printram("CPA\n"); |
| 2735 | return 0; |
| 2736 | } |
| 2737 | |
| 2738 | int discover_edges_write(ramctr_timing *ctrl) |
| 2739 | { |
| 2740 | int falling_edges[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES]; |
| 2741 | int rising_edges[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES]; |
| 2742 | int channel, slotrank, lane; |
| 2743 | int err; |
| 2744 | |
| 2745 | /* FIXME: under some conditions (older chipsets?) vendor BIOS sets both edges to the same value. */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2746 | MCHBAR32(0x4eb0) = 0x300; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2747 | printram("discover falling edges write:\n[%x] = %x\n", 0x4eb0, 0x300); |
| 2748 | |
| 2749 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS { |
| 2750 | err = discover_edges_write_real(ctrl, channel, slotrank, |
| 2751 | falling_edges[channel][slotrank]); |
| 2752 | if (err) |
| 2753 | return err; |
| 2754 | } |
| 2755 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2756 | MCHBAR32(0x4eb0) = 0x200; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2757 | printram("discover rising edges write:\n[%x] = %x\n", 0x4eb0, 0x200); |
| 2758 | |
| 2759 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS { |
| 2760 | err = discover_edges_write_real(ctrl, channel, slotrank, |
| 2761 | rising_edges[channel][slotrank]); |
| 2762 | if (err) |
| 2763 | return err; |
| 2764 | } |
| 2765 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2766 | MCHBAR32(0x4eb0) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2767 | |
| 2768 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
| 2769 | ctrl->timings[channel][slotrank].lanes[lane].falling = |
| 2770 | falling_edges[channel][slotrank][lane]; |
| 2771 | ctrl->timings[channel][slotrank].lanes[lane].rising = |
| 2772 | rising_edges[channel][slotrank][lane]; |
| 2773 | } |
| 2774 | |
| 2775 | FOR_ALL_POPULATED_CHANNELS |
| 2776 | program_timings(ctrl, channel); |
| 2777 | |
| 2778 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2779 | MCHBAR32(0x4080 + 0x400 * channel + 4 * lane) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2780 | } |
| 2781 | return 0; |
| 2782 | } |
| 2783 | |
| 2784 | static void test_timC_write(ramctr_timing *ctrl, int channel, int slotrank) |
| 2785 | { |
| 2786 | wait_428c(channel); |
| 2787 | /* DRAM command ACT */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2788 | MCHBAR32(0x4220 + 0x400 * channel) = 0x1f006; |
| 2789 | MCHBAR32(0x4230 + 0x400 * channel) = |
Elyes HAOUAS | f97c1c9 | 2019-12-03 18:22:06 +0100 | [diff] [blame] | 2790 | (MAX((ctrl->tFAW >> 2) + 1, ctrl->tRRD) |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2791 | << 10) | (ctrl->tRCD << 16) | 4; |
| 2792 | MCHBAR32(0x4200 + 0x400 * channel) = |
| 2793 | (slotrank << 24) | 0x60000; |
| 2794 | MCHBAR32(0x4210 + 0x400 * channel) = 0x244; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2795 | |
| 2796 | /* DRAM command WR */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2797 | MCHBAR32(0x4224 + 0x400 * channel) = 0x1f201; |
| 2798 | MCHBAR32(0x4234 + 0x400 * channel) = |
| 2799 | 0x80011e0 | ((ctrl->tWTR + ctrl->CWL + 8) << 16); |
| 2800 | MCHBAR32(0x4204 + 0x400 * channel) = slotrank << 24; |
| 2801 | MCHBAR32(0x4214 + 0x400 * channel) = 0x242; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2802 | |
| 2803 | /* DRAM command RD */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2804 | MCHBAR32(0x4228 + 0x400 * channel) = 0x1f105; |
| 2805 | MCHBAR32(0x4238 + 0x400 * channel) = |
Elyes HAOUAS | f97c1c9 | 2019-12-03 18:22:06 +0100 | [diff] [blame] | 2806 | 0x40011e0 | (MAX(ctrl->tRTP, 8) << 16); |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2807 | MCHBAR32(0x4208 + 0x400 * channel) = slotrank << 24; |
| 2808 | MCHBAR32(0x4218 + 0x400 * channel) = 0x242; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2809 | |
| 2810 | /* DRAM command PRE */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2811 | MCHBAR32(0x422c + 0x400 * channel) = 0x1f002; |
| 2812 | MCHBAR32(0x423c + 0x400 * channel) = 0x1001 | (ctrl->tRP << 16); |
| 2813 | MCHBAR32(0x420c + 0x400 * channel) = (slotrank << 24) | 0x60400; |
| 2814 | MCHBAR32(0x421c + 0x400 * channel) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2815 | |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 2816 | // execute command queue |
| 2817 | MCHBAR32(0x4284 + 0x400 * channel) = RUN_QUEUE_4284(4); |
| 2818 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2819 | wait_428c(channel); |
| 2820 | } |
| 2821 | |
| 2822 | int discover_timC_write(ramctr_timing *ctrl) |
| 2823 | { |
| 2824 | const u8 rege3c_b24[3] = { 0, 0xf, 0x2f }; |
| 2825 | int i, pat; |
| 2826 | |
| 2827 | int lower[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES]; |
| 2828 | int upper[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES]; |
| 2829 | int channel, slotrank, lane; |
| 2830 | |
| 2831 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
| 2832 | lower[channel][slotrank][lane] = 0; |
| 2833 | upper[channel][slotrank][lane] = MAX_TIMC; |
| 2834 | } |
| 2835 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2836 | MCHBAR32(0x4ea8) = 1; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2837 | printram("discover timC write:\n"); |
| 2838 | |
| 2839 | for (i = 0; i < 3; i++) |
| 2840 | FOR_ALL_POPULATED_CHANNELS { |
Felix Held | 2463aa9 | 2018-07-29 21:37:55 +0200 | [diff] [blame] | 2841 | MCHBAR32_AND_OR(0xe3c + (channel * 0x100), ~0x3f000000, |
| 2842 | rege3c_b24[i] << 24); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2843 | udelay(2); |
| 2844 | for (pat = 0; pat < NUM_PATTERNS; pat++) { |
| 2845 | FOR_ALL_POPULATED_RANKS { |
| 2846 | int timC; |
| 2847 | u32 raw_statistics[MAX_TIMC + 1]; |
| 2848 | int statistics[MAX_TIMC + 1]; |
| 2849 | |
| 2850 | /* Make sure rn.start < rn.end */ |
| 2851 | statistics[MAX_TIMC] = 1; |
| 2852 | |
| 2853 | fill_pattern5(ctrl, channel, pat); |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2854 | MCHBAR32(0x4288 + 0x400 * channel) = |
| 2855 | 0x1f; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2856 | for (timC = 0; timC < MAX_TIMC; timC++) { |
| 2857 | FOR_ALL_LANES |
| 2858 | ctrl->timings[channel][slotrank].lanes[lane].timC = timC; |
| 2859 | program_timings(ctrl, channel); |
| 2860 | |
| 2861 | test_timC_write (ctrl, channel, slotrank); |
| 2862 | |
| 2863 | raw_statistics[timC] = |
| 2864 | MCHBAR32(0x436c + 0x400 * channel); |
| 2865 | } |
| 2866 | FOR_ALL_LANES { |
| 2867 | struct run rn; |
| 2868 | for (timC = 0; timC < MAX_TIMC; timC++) |
| 2869 | statistics[timC] = |
| 2870 | !!(raw_statistics[timC] & |
| 2871 | (1 << lane)); |
| 2872 | |
| 2873 | rn = get_longest_zero_run(statistics, |
| 2874 | MAX_TIMC + 1); |
| 2875 | if (rn.all) { |
| 2876 | printk(BIOS_EMERG, "timC write discovery failed: %d, %d, %d\n", |
| 2877 | channel, slotrank, lane); |
| 2878 | return MAKE_ERR; |
| 2879 | } |
| 2880 | printram("timC: %d, %d, %d: 0x%02x-0x%02x-0x%02x, 0x%02x-0x%02x\n", |
| 2881 | channel, slotrank, i, rn.start, |
| 2882 | rn.middle, rn.end, |
| 2883 | rn.start + ctrl->timC_offset[i], |
| 2884 | rn.end - ctrl->timC_offset[i]); |
| 2885 | lower[channel][slotrank][lane] = |
Elyes HAOUAS | f97c1c9 | 2019-12-03 18:22:06 +0100 | [diff] [blame] | 2886 | MAX(rn.start + ctrl->timC_offset[i], |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2887 | lower[channel][slotrank][lane]); |
| 2888 | upper[channel][slotrank][lane] = |
Elyes HAOUAS | f97c1c9 | 2019-12-03 18:22:06 +0100 | [diff] [blame] | 2889 | MIN(rn.end - ctrl->timC_offset[i], |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2890 | upper[channel][slotrank][lane]); |
| 2891 | |
| 2892 | } |
| 2893 | } |
| 2894 | } |
| 2895 | } |
| 2896 | |
| 2897 | FOR_ALL_CHANNELS { |
Felix Held | 2463aa9 | 2018-07-29 21:37:55 +0200 | [diff] [blame] | 2898 | MCHBAR32_AND((channel * 0x100) + 0xe3c, ~0x3f000000); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2899 | udelay(2); |
| 2900 | } |
| 2901 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2902 | MCHBAR32(0x4ea8) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2903 | |
| 2904 | printram("CPB\n"); |
| 2905 | |
| 2906 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
| 2907 | printram("timC %d, %d, %d: %x\n", channel, |
| 2908 | slotrank, lane, |
| 2909 | (lower[channel][slotrank][lane] + |
| 2910 | upper[channel][slotrank][lane]) / 2); |
| 2911 | ctrl->timings[channel][slotrank].lanes[lane].timC = |
| 2912 | (lower[channel][slotrank][lane] + |
| 2913 | upper[channel][slotrank][lane]) / 2; |
| 2914 | } |
| 2915 | FOR_ALL_POPULATED_CHANNELS { |
| 2916 | program_timings(ctrl, channel); |
| 2917 | } |
| 2918 | return 0; |
| 2919 | } |
| 2920 | |
| 2921 | void normalize_training(ramctr_timing * ctrl) |
| 2922 | { |
| 2923 | int channel, slotrank, lane; |
Patrick Rudolph | 3c8cb97 | 2016-11-25 16:00:01 +0100 | [diff] [blame] | 2924 | int mat; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2925 | |
| 2926 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS { |
| 2927 | int delta; |
Patrick Rudolph | 3c8cb97 | 2016-11-25 16:00:01 +0100 | [diff] [blame] | 2928 | mat = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2929 | FOR_ALL_LANES mat = |
Elyes HAOUAS | f97c1c9 | 2019-12-03 18:22:06 +0100 | [diff] [blame] | 2930 | MAX(ctrl->timings[channel][slotrank].lanes[lane].timA, mat); |
Patrick Rudolph | 413edc8 | 2016-11-25 15:40:07 +0100 | [diff] [blame] | 2931 | printram("normalize %d, %d, %d: mat %d\n", |
| 2932 | channel, slotrank, lane, mat); |
| 2933 | |
| 2934 | delta = (mat >> 6) - ctrl->timings[channel][slotrank].val_4028; |
| 2935 | printram("normalize %d, %d, %d: delta %d\n", |
| 2936 | channel, slotrank, lane, delta); |
| 2937 | |
| 2938 | ctrl->timings[channel][slotrank].val_4024 += delta; |
| 2939 | ctrl->timings[channel][slotrank].val_4028 += delta; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2940 | } |
| 2941 | |
| 2942 | FOR_ALL_POPULATED_CHANNELS { |
| 2943 | program_timings(ctrl, channel); |
| 2944 | } |
| 2945 | } |
| 2946 | |
| 2947 | void write_controller_mr(ramctr_timing * ctrl) |
| 2948 | { |
| 2949 | int channel, slotrank; |
| 2950 | |
| 2951 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS { |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2952 | MCHBAR32(0x0004 + (channel << 8) + lane_registers[slotrank]) = |
| 2953 | make_mr0(ctrl, slotrank); |
| 2954 | MCHBAR32(0x0008 + (channel << 8) + lane_registers[slotrank]) = |
| 2955 | make_mr1(ctrl, slotrank, channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2956 | } |
| 2957 | } |
| 2958 | |
| 2959 | int channel_test(ramctr_timing *ctrl) |
| 2960 | { |
| 2961 | int channel, slotrank, lane; |
| 2962 | |
| 2963 | slotrank = 0; |
| 2964 | FOR_ALL_POPULATED_CHANNELS |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2965 | if (MCHBAR32(0x42a0 + (channel << 10)) & 0xa000) { |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2966 | printk(BIOS_EMERG, "Mini channel test failed (1): %d\n", |
| 2967 | channel); |
| 2968 | return MAKE_ERR; |
| 2969 | } |
| 2970 | FOR_ALL_POPULATED_CHANNELS { |
| 2971 | fill_pattern0(ctrl, channel, 0x12345678, 0x98765432); |
| 2972 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2973 | MCHBAR32(0x4288 + (channel << 10)) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2974 | } |
| 2975 | |
| 2976 | for (slotrank = 0; slotrank < 4; slotrank++) |
| 2977 | FOR_ALL_CHANNELS |
| 2978 | if (ctrl->rankmap[channel] & (1 << slotrank)) { |
| 2979 | FOR_ALL_LANES { |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2980 | MCHBAR32(0x4f40 + 4 * lane) = 0; |
| 2981 | MCHBAR32(0x4d40 + 4 * lane) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2982 | } |
| 2983 | wait_428c(channel); |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 2984 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2985 | /* DRAM command ACT */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2986 | MCHBAR32(0x4220 + (channel << 10)) = 0x0001f006; |
| 2987 | MCHBAR32(0x4230 + (channel << 10)) = 0x0028a004; |
| 2988 | MCHBAR32(0x4200 + (channel << 10)) = |
| 2989 | 0x00060000 | (slotrank << 24); |
| 2990 | MCHBAR32(0x4210 + (channel << 10)) = 0x00000244; |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 2991 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2992 | /* DRAM command WR */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2993 | MCHBAR32(0x4224 + (channel << 10)) = 0x0001f201; |
| 2994 | MCHBAR32(0x4234 + (channel << 10)) = 0x08281064; |
| 2995 | MCHBAR32(0x4204 + (channel << 10)) = |
| 2996 | 0x00000000 | (slotrank << 24); |
| 2997 | MCHBAR32(0x4214 + (channel << 10)) = 0x00000242; |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 2998 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2999 | /* DRAM command RD */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 3000 | MCHBAR32(0x4228 + (channel << 10)) = 0x0001f105; |
| 3001 | MCHBAR32(0x4238 + (channel << 10)) = 0x04281064; |
| 3002 | MCHBAR32(0x4208 + (channel << 10)) = |
| 3003 | 0x00000000 | (slotrank << 24); |
| 3004 | MCHBAR32(0x4218 + (channel << 10)) = 0x00000242; |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 3005 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3006 | /* DRAM command PRE */ |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 3007 | MCHBAR32(0x422c + (channel << 10)) = 0x0001f002; |
| 3008 | MCHBAR32(0x423c + (channel << 10)) = 0x00280c01; |
| 3009 | MCHBAR32(0x420c + (channel << 10)) = |
| 3010 | 0x00060400 | (slotrank << 24); |
| 3011 | MCHBAR32(0x421c + (channel << 10)) = 0x00000240; |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 3012 | |
| 3013 | // execute command queue |
| 3014 | MCHBAR32(0x4284 + (channel << 10)) = RUN_QUEUE_4284(4); |
| 3015 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3016 | wait_428c(channel); |
| 3017 | FOR_ALL_LANES |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 3018 | if (MCHBAR32(0x4340 + (channel << 10) + 4 * lane)) { |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3019 | printk(BIOS_EMERG, "Mini channel test failed (2): %d, %d, %d\n", |
| 3020 | channel, slotrank, lane); |
| 3021 | return MAKE_ERR; |
| 3022 | } |
| 3023 | } |
| 3024 | return 0; |
| 3025 | } |
| 3026 | |
| 3027 | void set_scrambling_seed(ramctr_timing * ctrl) |
| 3028 | { |
| 3029 | int channel; |
| 3030 | |
| 3031 | /* FIXME: we hardcode seeds. Do we need to use some PRNG for them? |
| 3032 | I don't think so. */ |
| 3033 | static u32 seeds[NUM_CHANNELS][3] = { |
| 3034 | {0x00009a36, 0xbafcfdcf, 0x46d1ab68}, |
| 3035 | {0x00028bfa, 0x53fe4b49, 0x19ed5483} |
| 3036 | }; |
| 3037 | FOR_ALL_POPULATED_CHANNELS { |
| 3038 | MCHBAR32(0x4020 + 0x400 * channel) &= ~0x10000000; |
Arthur Heymans | 6af8aab | 2017-09-26 23:18:14 +0200 | [diff] [blame] | 3039 | MCHBAR32(0x4034 + 0x400 * channel) = seeds[channel][0]; |
| 3040 | MCHBAR32(0x403c + 0x400 * channel) = seeds[channel][1]; |
| 3041 | MCHBAR32(0x4038 + 0x400 * channel) = seeds[channel][2]; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3042 | } |
| 3043 | } |
| 3044 | |
| 3045 | void set_4f8c(void) |
| 3046 | { |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3047 | u32 cpu; |
| 3048 | |
Subrata Banik | 53b08c3 | 2018-12-10 14:11:35 +0530 | [diff] [blame] | 3049 | cpu = cpu_get_cpuid(); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3050 | if (IS_SANDY_CPU(cpu) && (IS_SANDY_CPU_D0(cpu) || IS_SANDY_CPU_D1(cpu))) { |
| 3051 | MCHBAR32(0x4f8c) = 0x141D1519; |
| 3052 | } else { |
| 3053 | MCHBAR32(0x4f8c) = 0x551D1519; |
| 3054 | } |
| 3055 | } |
| 3056 | |
| 3057 | void prepare_training(ramctr_timing * ctrl) |
| 3058 | { |
| 3059 | int channel; |
| 3060 | |
| 3061 | FOR_ALL_POPULATED_CHANNELS { |
| 3062 | // Always drive command bus |
Felix Held | 9fe248f | 2018-07-31 20:59:45 +0200 | [diff] [blame] | 3063 | MCHBAR32_OR(0x4004 + 0x400 * channel, 0x20000000); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3064 | } |
| 3065 | |
| 3066 | udelay(1); |
| 3067 | |
| 3068 | FOR_ALL_POPULATED_CHANNELS { |
| 3069 | wait_428c(channel); |
| 3070 | } |
| 3071 | } |
| 3072 | |
| 3073 | void set_4008c(ramctr_timing * ctrl) |
| 3074 | { |
| 3075 | int channel, slotrank; |
Patrick Rudolph | 19c3dad | 2016-11-26 11:37:45 +0100 | [diff] [blame] | 3076 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3077 | FOR_ALL_POPULATED_CHANNELS { |
| 3078 | u32 b20, b4_8_12; |
| 3079 | int min_320c = 10000; |
| 3080 | int max_320c = -10000; |
| 3081 | |
| 3082 | FOR_ALL_POPULATED_RANKS { |
Elyes HAOUAS | f97c1c9 | 2019-12-03 18:22:06 +0100 | [diff] [blame] | 3083 | max_320c = MAX(ctrl->timings[channel][slotrank].val_320c, max_320c); |
| 3084 | min_320c = MIN(ctrl->timings[channel][slotrank].val_320c, min_320c); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3085 | } |
| 3086 | |
| 3087 | if (max_320c - min_320c > 51) |
| 3088 | b20 = 0; |
| 3089 | else |
| 3090 | b20 = ctrl->ref_card_offset[channel]; |
| 3091 | |
| 3092 | if (ctrl->reg_320c_range_threshold < max_320c - min_320c) |
| 3093 | b4_8_12 = 0x3330; |
| 3094 | else |
| 3095 | b4_8_12 = 0x2220; |
| 3096 | |
Patrick Rudolph | 19c3dad | 2016-11-26 11:37:45 +0100 | [diff] [blame] | 3097 | dram_odt_stretch(ctrl, channel); |
| 3098 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 3099 | MCHBAR32(0x4008 + (channel << 10)) = |
Felix Held | 2463aa9 | 2018-07-29 21:37:55 +0200 | [diff] [blame] | 3100 | 0x0a000000 | (b20 << 20) | |
| 3101 | ((ctrl->ref_card_offset[channel] + 2) << 16) | b4_8_12; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3102 | } |
| 3103 | } |
| 3104 | |
| 3105 | void set_42a0(ramctr_timing * ctrl) |
| 3106 | { |
| 3107 | int channel; |
| 3108 | FOR_ALL_POPULATED_CHANNELS { |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 3109 | MCHBAR32(0x42a0 + 0x400 * channel) = |
| 3110 | 0x00001000 | ctrl->rankmap[channel]; |
Felix Held | 2463aa9 | 2018-07-29 21:37:55 +0200 | [diff] [blame] | 3111 | MCHBAR32_AND(0x4004 + 0x400 * channel, ~0x20000000); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3112 | } |
| 3113 | } |
| 3114 | |
| 3115 | static int encode_5d10(int ns) |
| 3116 | { |
| 3117 | return (ns + 499) / 500; |
| 3118 | } |
| 3119 | |
| 3120 | /* FIXME: values in this function should be hardware revision-dependent. */ |
| 3121 | void final_registers(ramctr_timing * ctrl) |
| 3122 | { |
Patrick Rudolph | 74203de | 2017-11-20 11:57:01 +0100 | [diff] [blame] | 3123 | const size_t is_mobile = get_platform_type() == PLATFORM_MOBILE; |
| 3124 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3125 | int channel; |
| 3126 | int t1_cycles = 0, t1_ns = 0, t2_ns; |
| 3127 | int t3_ns; |
| 3128 | u32 r32; |
| 3129 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 3130 | MCHBAR32(0x4cd4) = 0x00000046; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3131 | |
Felix Held | f9b826a | 2018-07-30 17:56:52 +0200 | [diff] [blame] | 3132 | FOR_ALL_CHANNELS |
| 3133 | MCHBAR32_AND_OR(0x400c + 0x400 * channel, 0xFFFFCFFF, 0x1000); |
Patrick Rudolph | 652c491 | 2017-10-31 11:36:55 +0100 | [diff] [blame] | 3134 | |
Patrick Rudolph | 74203de | 2017-11-20 11:57:01 +0100 | [diff] [blame] | 3135 | if (is_mobile) |
Patrick Rudolph | 652c491 | 2017-10-31 11:36:55 +0100 | [diff] [blame] | 3136 | /* APD - DLL Off, 64 DCLKs until idle, decision per rank */ |
| 3137 | MCHBAR32(PM_PDWN_Config) = 0x00000740; |
| 3138 | else |
| 3139 | /* APD - PPD, 64 DCLKs until idle, decision per rank */ |
| 3140 | MCHBAR32(PM_PDWN_Config) = 0x00000340; |
| 3141 | |
Felix Held | f9b826a | 2018-07-30 17:56:52 +0200 | [diff] [blame] | 3142 | FOR_ALL_CHANNELS |
| 3143 | MCHBAR32(0x4380 + 0x400 * channel) = 0x00000aaa; |
| 3144 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 3145 | MCHBAR32(0x4f88) = 0x5f7003ff; // OK |
| 3146 | MCHBAR32(0x5064) = 0x00073000 | ctrl->reg_5064b0; // OK |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3147 | |
| 3148 | FOR_ALL_CHANNELS { |
| 3149 | switch (ctrl->rankmap[channel]) { |
| 3150 | /* Unpopulated channel. */ |
| 3151 | case 0: |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 3152 | MCHBAR32(0x4384 + channel * 0x400) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3153 | break; |
| 3154 | /* Only single-ranked dimms. */ |
| 3155 | case 1: |
| 3156 | case 4: |
| 3157 | case 5: |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 3158 | MCHBAR32(0x4384 + channel * 0x400) = 0x373131; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3159 | break; |
| 3160 | /* Dual-ranked dimms present. */ |
| 3161 | default: |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 3162 | MCHBAR32(0x4384 + channel * 0x400) = 0x9b6ea1; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3163 | break; |
| 3164 | } |
| 3165 | } |
| 3166 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 3167 | MCHBAR32(0x5880) = 0xca9171e5; |
Felix Held | 2463aa9 | 2018-07-29 21:37:55 +0200 | [diff] [blame] | 3168 | MCHBAR32_AND_OR(0x5888, ~0xffffff, 0xe4d5d0); |
| 3169 | MCHBAR32_AND(0x58a8, ~0x1f); |
Felix Held | f9b826a | 2018-07-30 17:56:52 +0200 | [diff] [blame] | 3170 | |
| 3171 | FOR_ALL_CHANNELS |
| 3172 | MCHBAR32_AND_OR(0x4294 + 0x400 * channel, ~0x30000, 1 << 16); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3173 | |
Felix Held | 9fe248f | 2018-07-31 20:59:45 +0200 | [diff] [blame] | 3174 | MCHBAR32_OR(0x5030, 1); |
| 3175 | MCHBAR32_OR(0x5030, 0x80); |
Felix Held | 2463aa9 | 2018-07-29 21:37:55 +0200 | [diff] [blame] | 3176 | MCHBAR32(0x5f18) = 0xfa; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3177 | |
| 3178 | /* Find a populated channel. */ |
| 3179 | FOR_ALL_POPULATED_CHANNELS |
| 3180 | break; |
| 3181 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 3182 | t1_cycles = (MCHBAR32(0x4290 + channel * 0x400) >> 8) & 0xff; |
| 3183 | r32 = MCHBAR32(0x5064); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3184 | if (r32 & 0x20000) |
| 3185 | t1_cycles += (r32 & 0xfff); |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 3186 | t1_cycles += MCHBAR32(channel * 0x400 + 0x42a4) & 0xfff; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3187 | t1_ns = t1_cycles * ctrl->tCK / 256 + 544; |
| 3188 | if (!(r32 & 0x20000)) |
| 3189 | t1_ns += 500; |
| 3190 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 3191 | t2_ns = 10 * ((MCHBAR32(0x5f10) >> 8) & 0xfff); |
| 3192 | if (MCHBAR32(0x5f00) & 8) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3193 | { |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 3194 | t3_ns = 10 * ((MCHBAR32(0x5f20) >> 8) & 0xfff); |
| 3195 | t3_ns += 10 * (MCHBAR32(0x5f18) & 0xff); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3196 | } |
| 3197 | else |
| 3198 | { |
| 3199 | t3_ns = 500; |
| 3200 | } |
| 3201 | printk(BIOS_DEBUG, "t123: %d, %d, %d\n", |
| 3202 | t1_ns, t2_ns, t3_ns); |
Felix Held | b802c07 | 2018-07-29 21:46:19 +0200 | [diff] [blame] | 3203 | MCHBAR32_AND_OR(0x5d10, 0xC0C0C0C0, |
| 3204 | ((encode_5d10(t1_ns) + encode_5d10(t2_ns)) << 16) | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 3205 | (encode_5d10(t1_ns) << 8) | ((encode_5d10(t3_ns) + |
Felix Held | b802c07 | 2018-07-29 21:46:19 +0200 | [diff] [blame] | 3206 | encode_5d10(t2_ns) + encode_5d10(t1_ns)) << 24) | 0xc); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3207 | } |
| 3208 | |
| 3209 | void restore_timings(ramctr_timing * ctrl) |
| 3210 | { |
| 3211 | int channel, slotrank, lane; |
| 3212 | |
| 3213 | FOR_ALL_POPULATED_CHANNELS |
| 3214 | MCHBAR32(0x4004 + 0x400 * channel) = |
| 3215 | ctrl->tRRD |
| 3216 | | (ctrl->tRTP << 4) |
| 3217 | | (ctrl->tCKE << 8) |
| 3218 | | (ctrl->tWTR << 12) |
| 3219 | | (ctrl->tFAW << 16) |
| 3220 | | (ctrl->tWR << 24) |
| 3221 | | (ctrl->cmd_stretch[channel] << 30); |
| 3222 | |
| 3223 | udelay(1); |
| 3224 | |
| 3225 | FOR_ALL_POPULATED_CHANNELS { |
| 3226 | wait_428c(channel); |
| 3227 | } |
| 3228 | |
| 3229 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 3230 | MCHBAR32(0x4080 + 0x400 * channel + 4 * lane) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3231 | } |
| 3232 | |
| 3233 | FOR_ALL_POPULATED_CHANNELS |
Felix Held | 2463aa9 | 2018-07-29 21:37:55 +0200 | [diff] [blame] | 3234 | MCHBAR32_OR(0x4008 + 0x400 * channel, 0x8000000); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3235 | |
| 3236 | FOR_ALL_POPULATED_CHANNELS { |
| 3237 | udelay (1); |
Felix Held | 2463aa9 | 2018-07-29 21:37:55 +0200 | [diff] [blame] | 3238 | MCHBAR32_OR(0x4020 + 0x400 * channel, 0x200000); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3239 | } |
| 3240 | |
| 3241 | printram("CPE\n"); |
| 3242 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 3243 | MCHBAR32(0x3400) = 0; |
| 3244 | MCHBAR32(0x4eb0) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3245 | |
| 3246 | printram("CP5b\n"); |
| 3247 | |
| 3248 | FOR_ALL_POPULATED_CHANNELS { |
| 3249 | program_timings(ctrl, channel); |
| 3250 | } |
| 3251 | |
| 3252 | u32 reg, addr; |
| 3253 | |
| 3254 | while (!(MCHBAR32(0x5084) & 0x10000)); |
| 3255 | do { |
| 3256 | reg = MCHBAR32(0x428c); |
| 3257 | } while ((reg & 0x14) == 0); |
| 3258 | |
| 3259 | // Set state of memory controller |
| 3260 | MCHBAR32(0x5030) = 0x116; |
| 3261 | MCHBAR32(0x4ea0) = 0; |
| 3262 | |
| 3263 | // Wait 500us |
| 3264 | udelay(500); |
| 3265 | |
| 3266 | FOR_ALL_CHANNELS { |
| 3267 | // Set valid rank CKE |
| 3268 | reg = 0; |
| 3269 | reg = (reg & ~0xf) | ctrl->rankmap[channel]; |
| 3270 | addr = 0x400 * channel + 0x42a0; |
| 3271 | MCHBAR32(addr) = reg; |
| 3272 | |
| 3273 | // Wait 10ns for ranks to settle |
| 3274 | //udelay(0.01); |
| 3275 | |
| 3276 | reg = (reg & ~0xf0) | (ctrl->rankmap[channel] << 4); |
| 3277 | MCHBAR32(addr) = reg; |
| 3278 | |
| 3279 | // Write reset using a NOP |
| 3280 | write_reset(ctrl); |
| 3281 | } |
| 3282 | |
| 3283 | /* mrs commands. */ |
| 3284 | dram_mrscommands(ctrl); |
| 3285 | |
| 3286 | printram("CP5c\n"); |
| 3287 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 3288 | MCHBAR32(0x3000) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3289 | |
| 3290 | FOR_ALL_CHANNELS { |
Felix Held | 2463aa9 | 2018-07-29 21:37:55 +0200 | [diff] [blame] | 3291 | MCHBAR32_AND(channel * 0x100 + 0xe3c, ~0x3f000000); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3292 | udelay(2); |
| 3293 | } |
| 3294 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 3295 | MCHBAR32(0x4ea8) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3296 | } |