Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2007-2009 coresystems GmbH |
| 5 | * Copyright (C) 2011 The ChromiumOS Authors. All rights reserved. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; version 2 of the License. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | */ |
| 20 | |
| 21 | #include <console/console.h> |
| 22 | #include <arch/acpi.h> |
| 23 | #include <arch/io.h> |
| 24 | #include <stdint.h> |
| 25 | #include <delay.h> |
| 26 | #include <cpu/intel/haswell/haswell.h> |
| 27 | #include <cpu/x86/msr.h> |
| 28 | #include <device/device.h> |
| 29 | #include <device/pci.h> |
| 30 | #include <device/pci_ids.h> |
| 31 | #include <device/hypertransport.h> |
| 32 | #include <stdlib.h> |
| 33 | #include <string.h> |
| 34 | #include <cpu/cpu.h> |
Aaron Durbin | 1fef1f5 | 2012-12-19 17:15:43 -0600 | [diff] [blame] | 35 | #include <cpu/x86/smm.h> |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 36 | #include <boot/tables.h> |
| 37 | #include <cbmem.h> |
Aaron Durbin | bf396ff | 2013-02-11 21:50:35 -0600 | [diff] [blame] | 38 | #include <romstage_handoff.h> |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 39 | #include "chip.h" |
| 40 | #include "haswell.h" |
| 41 | |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 42 | static int get_pcie_bar(device_t dev, unsigned int index, u32 *base, u32 *len) |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 43 | { |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 44 | u32 pciexbar_reg; |
| 45 | |
| 46 | *base = 0; |
| 47 | *len = 0; |
| 48 | |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 49 | pciexbar_reg = pci_read_config32(dev, index); |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 50 | |
| 51 | if (!(pciexbar_reg & (1 << 0))) |
| 52 | return 0; |
| 53 | |
| 54 | switch ((pciexbar_reg >> 1) & 3) { |
| 55 | case 0: // 256MB |
| 56 | *base = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)); |
| 57 | *len = 256 * 1024 * 1024; |
| 58 | return 1; |
| 59 | case 1: // 128M |
| 60 | *base = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)|(1 << 27)); |
| 61 | *len = 128 * 1024 * 1024; |
| 62 | return 1; |
| 63 | case 2: // 64M |
| 64 | *base = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)|(1 << 27)|(1 << 26)); |
| 65 | *len = 64 * 1024 * 1024; |
| 66 | return 1; |
| 67 | } |
| 68 | |
| 69 | return 0; |
| 70 | } |
| 71 | |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 72 | static void pci_domain_set_resources(device_t dev) |
| 73 | { |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 74 | assign_resources(dev->link_list); |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 75 | } |
| 76 | |
| 77 | /* TODO We could determine how many PCIe busses we need in |
| 78 | * the bar. For now that number is hardcoded to a max of 64. |
| 79 | * See e7525/northbridge.c for an example. |
| 80 | */ |
| 81 | static struct device_operations pci_domain_ops = { |
| 82 | .read_resources = pci_domain_read_resources, |
| 83 | .set_resources = pci_domain_set_resources, |
| 84 | .enable_resources = NULL, |
| 85 | .init = NULL, |
| 86 | .scan_bus = pci_domain_scan_bus, |
Kyösti Mälkki | 872c922 | 2013-07-03 09:44:28 +0300 | [diff] [blame] | 87 | .ops_pci_bus = pci_bus_default_ops, |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 88 | }; |
| 89 | |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 90 | static int get_bar(device_t dev, unsigned int index, u32 *base, u32 *len) |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 91 | { |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 92 | u32 bar; |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 93 | |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 94 | bar = pci_read_config32(dev, index); |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 95 | |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 96 | /* If not enabled don't report it. */ |
| 97 | if (!(bar & 0x1)) |
| 98 | return 0; |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 99 | |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 100 | /* Knock down the enable bit. */ |
| 101 | *base = bar & ~1; |
| 102 | |
| 103 | return 1; |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 104 | } |
| 105 | |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 106 | /* There are special BARs that actually are programmed in the MCHBAR. These |
| 107 | * Intel special features, but they do consume resources that need to be |
| 108 | * accounted for. */ |
| 109 | static int get_bar_in_mchbar(device_t dev, unsigned int index, u32 *base, |
| 110 | u32 *len) |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 111 | { |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 112 | u32 bar; |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 113 | |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 114 | bar = MCHBAR32(index); |
| 115 | |
| 116 | /* If not enabled don't report it. */ |
| 117 | if (!(bar & 0x1)) |
| 118 | return 0; |
| 119 | |
| 120 | /* Knock down the enable bit. */ |
| 121 | *base = bar & ~1; |
| 122 | |
| 123 | return 1; |
| 124 | } |
| 125 | |
| 126 | struct fixed_mmio_descriptor { |
| 127 | unsigned int index; |
| 128 | u32 size; |
| 129 | int (*get_resource)(device_t dev, unsigned int index, |
| 130 | u32 *base, u32 *size); |
| 131 | const char *description; |
| 132 | }; |
| 133 | |
| 134 | #define SIZE_KB(x) ((x)*1024) |
| 135 | struct fixed_mmio_descriptor mc_fixed_resources[] = { |
| 136 | { PCIEXBAR, SIZE_KB(0), get_pcie_bar, "PCIEXBAR" }, |
| 137 | { MCHBAR, SIZE_KB(32), get_bar, "MCHBAR" }, |
| 138 | { DMIBAR, SIZE_KB(4), get_bar, "DMIBAR" }, |
| 139 | { EPBAR, SIZE_KB(4), get_bar, "EPBAR" }, |
| 140 | { 0x5420, SIZE_KB(4), get_bar_in_mchbar, "GDXCBAR" }, |
| 141 | { 0x5408, SIZE_KB(16), get_bar_in_mchbar, "EDRAMBAR" }, |
| 142 | }; |
| 143 | #undef SIZE_KB |
| 144 | |
| 145 | /* |
| 146 | * Add all known fixed MMIO ranges that hang off the host bridge/memory |
| 147 | * controller device. |
| 148 | */ |
| 149 | static void mc_add_fixed_mmio_resources(device_t dev) |
| 150 | { |
| 151 | int i; |
| 152 | |
| 153 | for (i = 0; i < ARRAY_SIZE(mc_fixed_resources); i++) { |
| 154 | u32 base; |
| 155 | u32 size; |
| 156 | struct resource *resource; |
| 157 | unsigned int index; |
| 158 | |
| 159 | size = mc_fixed_resources[i].size; |
| 160 | index = mc_fixed_resources[i].index; |
| 161 | if (!mc_fixed_resources[i].get_resource(dev, index, |
| 162 | &base, &size)) |
| 163 | continue; |
| 164 | |
| 165 | resource = new_resource(dev, mc_fixed_resources[i].index); |
| 166 | resource->flags = IORESOURCE_MEM | IORESOURCE_FIXED | |
| 167 | IORESOURCE_STORED | IORESOURCE_RESERVE | |
| 168 | IORESOURCE_ASSIGNED; |
| 169 | resource->base = base; |
| 170 | resource->size = size; |
| 171 | printk(BIOS_DEBUG, "%s: Adding %s @ %x 0x%08lx-0x%08lx.\n", |
| 172 | __func__, mc_fixed_resources[i].description, index, |
| 173 | (unsigned long)base, (unsigned long)(base + size - 1)); |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | /* Host Memory Map: |
| 178 | * |
| 179 | * +--------------------------+ TOUUD |
| 180 | * | | |
| 181 | * +--------------------------+ 4GiB |
| 182 | * | PCI Address Space | |
| 183 | * +--------------------------+ TOLUD (also maps into MC address space) |
| 184 | * | iGD | |
| 185 | * +--------------------------+ BDSM |
| 186 | * | GTT | |
| 187 | * +--------------------------+ BGSM |
| 188 | * | TSEG | |
| 189 | * +--------------------------+ TSEGMB |
| 190 | * | Usage DRAM | |
| 191 | * +--------------------------+ 0 |
| 192 | * |
| 193 | * Some of the base registers above can be equal making the size of those |
| 194 | * regions 0. The reason is because the memory controller internally subtracts |
| 195 | * the base registers from each other to determine sizes of the regions. In |
| 196 | * other words, the memory map is in a fixed order no matter what. |
| 197 | */ |
| 198 | |
| 199 | struct map_entry { |
| 200 | int reg; |
| 201 | int is_64_bit; |
| 202 | int is_limit; |
| 203 | const char *description; |
| 204 | }; |
| 205 | |
| 206 | static void read_map_entry(device_t dev, struct map_entry *entry, |
| 207 | uint64_t *result) |
| 208 | { |
| 209 | uint64_t value; |
| 210 | uint64_t mask; |
| 211 | |
| 212 | /* All registers are on a 1MiB granularity. */ |
| 213 | mask = ((1ULL<<20)-1); |
| 214 | mask = ~mask; |
| 215 | |
| 216 | value = 0; |
| 217 | |
| 218 | if (entry->is_64_bit) { |
| 219 | value = pci_read_config32(dev, entry->reg + 4); |
| 220 | value <<= 32; |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 221 | } |
| 222 | |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 223 | value |= pci_read_config32(dev, entry->reg); |
| 224 | value &= mask; |
| 225 | |
| 226 | if (entry->is_limit) |
| 227 | value |= ~mask; |
| 228 | |
| 229 | *result = value; |
| 230 | } |
| 231 | |
| 232 | #define MAP_ENTRY(reg_, is_64_, is_limit_, desc_) \ |
| 233 | { \ |
| 234 | .reg = reg_, \ |
| 235 | .is_64_bit = is_64_, \ |
| 236 | .is_limit = is_limit_, \ |
| 237 | .description = desc_, \ |
| 238 | } |
| 239 | |
| 240 | #define MAP_ENTRY_BASE_64(reg_, desc_) \ |
| 241 | MAP_ENTRY(reg_, 1, 0, desc_) |
| 242 | #define MAP_ENTRY_LIMIT_64(reg_, desc_) \ |
| 243 | MAP_ENTRY(reg_, 1, 1, desc_) |
| 244 | #define MAP_ENTRY_BASE_32(reg_, desc_) \ |
| 245 | MAP_ENTRY(reg_, 0, 0, desc_) |
| 246 | |
| 247 | enum { |
| 248 | TOM_REG, |
| 249 | TOUUD_REG, |
| 250 | MESEG_BASE_REG, |
| 251 | MESEG_LIMIT_REG, |
| 252 | REMAP_BASE_REG, |
| 253 | REMAP_LIMIT_REG, |
| 254 | TOLUD_REG, |
| 255 | BGSM_REG, |
| 256 | BDSM_REG, |
| 257 | TSEG_REG, |
| 258 | // Must be last. |
| 259 | NUM_MAP_ENTRIES |
| 260 | }; |
| 261 | |
| 262 | static struct map_entry memory_map[NUM_MAP_ENTRIES] = { |
| 263 | [TOM_REG] = MAP_ENTRY_BASE_64(TOM, "TOM"), |
| 264 | [TOUUD_REG] = MAP_ENTRY_BASE_64(TOUUD, "TOUUD"), |
| 265 | [MESEG_BASE_REG] = MAP_ENTRY_BASE_64(MESEG_BASE, "MESEG_BASE"), |
| 266 | [MESEG_LIMIT_REG] = MAP_ENTRY_LIMIT_64(MESEG_LIMIT, "MESEG_LIMIT"), |
| 267 | [REMAP_BASE_REG] = MAP_ENTRY_BASE_64(REMAPBASE, "REMAP_BASE"), |
| 268 | [REMAP_LIMIT_REG] = MAP_ENTRY_LIMIT_64(REMAPLIMIT, "REMAP_LIMIT"), |
| 269 | [TOLUD_REG] = MAP_ENTRY_BASE_32(TOLUD, "TOLUD"), |
Aaron Durbin | 1570260 | 2012-12-21 22:18:58 -0600 | [diff] [blame] | 270 | [BDSM_REG] = MAP_ENTRY_BASE_32(BDSM, "BDSM"), |
| 271 | [BGSM_REG] = MAP_ENTRY_BASE_32(BGSM, "BGSM"), |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 272 | [TSEG_REG] = MAP_ENTRY_BASE_32(TSEG, "TESGMB"), |
| 273 | }; |
| 274 | |
| 275 | static void mc_read_map_entries(device_t dev, uint64_t *values) |
| 276 | { |
| 277 | int i; |
| 278 | for (i = 0; i < NUM_MAP_ENTRIES; i++) { |
| 279 | read_map_entry(dev, &memory_map[i], &values[i]); |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | static void mc_report_map_entries(device_t dev, uint64_t *values) |
| 284 | { |
| 285 | int i; |
| 286 | for (i = 0; i < NUM_MAP_ENTRIES; i++) { |
| 287 | printk(BIOS_DEBUG, "MC MAP: %s: 0x%llx\n", |
| 288 | memory_map[i].description, values[i]); |
| 289 | } |
| 290 | /* One can validate the BDSM and BGSM against the GGC. */ |
| 291 | printk(BIOS_DEBUG, "MC MAP: GGC: 0x%x\n", pci_read_config16(dev, GGC)); |
| 292 | } |
| 293 | |
| 294 | static void mc_add_dram_resources(device_t dev) |
| 295 | { |
| 296 | unsigned long base_k, size_k; |
Aaron Durbin | 27435d3 | 2013-06-03 09:46:56 -0500 | [diff] [blame] | 297 | unsigned long touud_k; |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 298 | unsigned long index; |
| 299 | struct resource *resource; |
| 300 | uint64_t mc_values[NUM_MAP_ENTRIES]; |
| 301 | |
| 302 | /* Read in the MAP registers and report their values. */ |
| 303 | mc_read_map_entries(dev, &mc_values[0]); |
| 304 | mc_report_map_entries(dev, &mc_values[0]); |
| 305 | |
| 306 | /* |
Aaron Durbin | 1fef1f5 | 2012-12-19 17:15:43 -0600 | [diff] [blame] | 307 | * These are the host memory ranges that should be added: |
| 308 | * - 0 -> SMM_DEFAULT_BASE : cacheable |
| 309 | * - SMM_DEFAULT_BASE -> SMM_DEFAULT_BASE + SMM_DEFAULT_SIZE : |
| 310 | * cacheable and reserved |
| 311 | * - SMM_DEFAULT_BASE + SMM_DEFAULT_SIZE -> 0xa0000 : cacheable |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 312 | * - 0xc0000 -> TSEG : cacheable |
Aaron Durbin | e6c3b1d | 2012-12-21 21:22:07 -0600 | [diff] [blame] | 313 | * - TESG -> BGSM: cacheable with standard MTRRs and reserved |
| 314 | * - BGSM -> TOLUD: not cacheable with standard MTRRs and reserved |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 315 | * - 4GiB -> TOUUD: cacheable |
| 316 | * |
Aaron Durbin | 1fef1f5 | 2012-12-19 17:15:43 -0600 | [diff] [blame] | 317 | * The default SMRAM space is reserved so that the range doesn't |
| 318 | * have to be saved during S3 Resume. Once marked reserved the OS |
| 319 | * cannot use the memory. This is a bit of an odd place to reserve |
| 320 | * the region, but the CPU devices don't have dev_ops->read_resources() |
| 321 | * called on them. |
| 322 | * |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 323 | * The range 0xa0000 -> 0xc0000 does not have any resources |
| 324 | * associated with it to handle legacy VGA memory. If this range |
| 325 | * is not omitted the mtrr code will setup the area as cacheable |
| 326 | * causing VGA access to not work. |
| 327 | * |
Aaron Durbin | e6c3b1d | 2012-12-21 21:22:07 -0600 | [diff] [blame] | 328 | * The TSEG region is mapped as cacheable so that one can perform |
| 329 | * SMRAM relocation faster. Once the SMRR is enabled the SMRR takes |
| 330 | * precedence over the existing MTRRs covering this region. |
| 331 | * |
Aaron Durbin | 1fef1f5 | 2012-12-19 17:15:43 -0600 | [diff] [blame] | 332 | * It should be noted that cacheable entry types need to be added in |
| 333 | * order. The reason is that the current MTRR code assumes this and |
| 334 | * falls over itself if it isn't. |
| 335 | * |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 336 | * The resource index starts low and should not meet or exceed |
Aaron Durbin | 1fef1f5 | 2012-12-19 17:15:43 -0600 | [diff] [blame] | 337 | * PCI_BASE_ADDRESS_0. |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 338 | */ |
| 339 | index = 0; |
| 340 | |
Aaron Durbin | 1fef1f5 | 2012-12-19 17:15:43 -0600 | [diff] [blame] | 341 | /* 0 - > SMM_DEFAULT_BASE */ |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 342 | base_k = 0; |
Aaron Durbin | 1fef1f5 | 2012-12-19 17:15:43 -0600 | [diff] [blame] | 343 | size_k = SMM_DEFAULT_BASE >> 10; |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 344 | ram_resource(dev, index++, base_k, size_k); |
| 345 | |
Aaron Durbin | 1fef1f5 | 2012-12-19 17:15:43 -0600 | [diff] [blame] | 346 | /* SMM_DEFAULT_BASE -> SMM_DEFAULT_BASE + SMM_DEFAULT_SIZE */ |
| 347 | resource = new_resource(dev, index++); |
| 348 | resource->base = SMM_DEFAULT_BASE; |
| 349 | resource->size = SMM_DEFAULT_SIZE; |
| 350 | resource->flags = IORESOURCE_MEM | IORESOURCE_FIXED | |
| 351 | IORESOURCE_CACHEABLE | IORESOURCE_STORED | |
| 352 | IORESOURCE_RESERVE | IORESOURCE_ASSIGNED; |
| 353 | |
| 354 | /* SMM_DEFAULT_BASE + SMM_DEFAULT_SIZE -> 0xa0000 */ |
| 355 | base_k = (SMM_DEFAULT_BASE + SMM_DEFAULT_SIZE) >> 10; |
| 356 | size_k = (0xa0000 >> 10) - base_k; |
| 357 | ram_resource(dev, index++, base_k, size_k); |
| 358 | |
| 359 | /* 0xc0000 -> TSEG */ |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 360 | base_k = 0xc0000 >> 10; |
| 361 | size_k = (unsigned long)(mc_values[TSEG_REG] >> 10) - base_k; |
| 362 | ram_resource(dev, index++, base_k, size_k); |
| 363 | |
Aaron Durbin | e6c3b1d | 2012-12-21 21:22:07 -0600 | [diff] [blame] | 364 | /* TSEG -> BGSM */ |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 365 | resource = new_resource(dev, index++); |
| 366 | resource->base = mc_values[TSEG_REG]; |
Aaron Durbin | e6c3b1d | 2012-12-21 21:22:07 -0600 | [diff] [blame] | 367 | resource->size = mc_values[BGSM_REG] - resource->base; |
| 368 | resource->flags = IORESOURCE_MEM | IORESOURCE_FIXED | |
| 369 | IORESOURCE_STORED | IORESOURCE_RESERVE | |
| 370 | IORESOURCE_ASSIGNED | IORESOURCE_CACHEABLE; |
| 371 | |
| 372 | /* BGSM -> TOLUD */ |
| 373 | resource = new_resource(dev, index++); |
| 374 | resource->base = mc_values[BGSM_REG]; |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 375 | resource->size = mc_values[TOLUD_REG] - resource->base; |
| 376 | resource->flags = IORESOURCE_MEM | IORESOURCE_FIXED | |
| 377 | IORESOURCE_STORED | IORESOURCE_RESERVE | |
| 378 | IORESOURCE_ASSIGNED; |
| 379 | |
| 380 | /* 4GiB -> TOUUD */ |
| 381 | base_k = 4096 * 1024; /* 4GiB */ |
Aaron Durbin | 27435d3 | 2013-06-03 09:46:56 -0500 | [diff] [blame] | 382 | touud_k = mc_values[TOUUD_REG] >> 10; |
| 383 | size_k = touud_k - base_k; |
| 384 | if (touud_k > base_k) |
Aaron Durbin | 5c66f08 | 2013-01-08 10:10:33 -0600 | [diff] [blame] | 385 | ram_resource(dev, index++, base_k, size_k); |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 386 | |
Aaron Durbin | c965076 | 2013-03-22 22:03:09 -0500 | [diff] [blame] | 387 | /* Reserve everything between A segment and 1MB: |
| 388 | * |
| 389 | * 0xa0000 - 0xbffff: legacy VGA |
| 390 | * 0xc0000 - 0xfffff: RAM |
| 391 | */ |
| 392 | mmio_resource(dev, index++, (0xa0000 >> 10), (0xc0000 - 0xa0000) >> 10); |
| 393 | reserved_ram_resource(dev, index++, (0xc0000 >> 10), |
| 394 | (0x100000 - 0xc0000) >> 10); |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 395 | #if CONFIG_CHROMEOS_RAMOOPS |
Aaron Durbin | c965076 | 2013-03-22 22:03:09 -0500 | [diff] [blame] | 396 | reserved_ram_resource(dev, index++, |
| 397 | CONFIG_CHROMEOS_RAMOOPS_RAM_START >> 10, |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 398 | CONFIG_CHROMEOS_RAMOOPS_RAM_SIZE >> 10); |
| 399 | #endif |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 400 | } |
| 401 | |
| 402 | static void mc_read_resources(device_t dev) |
| 403 | { |
| 404 | /* Read standard PCI resources. */ |
| 405 | pci_dev_read_resources(dev); |
| 406 | |
| 407 | /* Add all fixed MMIO resources. */ |
| 408 | mc_add_fixed_mmio_resources(dev); |
| 409 | |
| 410 | /* Calculate and add DRAM resources. */ |
| 411 | mc_add_dram_resources(dev); |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 412 | } |
| 413 | |
| 414 | static void intel_set_subsystem(device_t dev, unsigned vendor, unsigned device) |
| 415 | { |
| 416 | if (!vendor || !device) { |
| 417 | pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, |
| 418 | pci_read_config32(dev, PCI_VENDOR_ID)); |
| 419 | } else { |
| 420 | pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, |
| 421 | ((device & 0xffff) << 16) | (vendor & 0xffff)); |
| 422 | } |
| 423 | } |
| 424 | |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 425 | static void northbridge_init(struct device *dev) |
| 426 | { |
Duncan Laurie | c70353f | 2013-06-28 14:40:38 -0700 | [diff] [blame] | 427 | u8 bios_reset_cpl, pair; |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 428 | |
Duncan Laurie | c70353f | 2013-06-28 14:40:38 -0700 | [diff] [blame] | 429 | /* Enable Power Aware Interrupt Routing */ |
| 430 | pair = MCHBAR8(0x5418); |
| 431 | pair &= ~0x7; /* Clear 2:0 */ |
| 432 | pair |= 0x4; /* Fixed Priority */ |
| 433 | MCHBAR8(0x5418) = pair; |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 434 | |
| 435 | /* |
Duncan Laurie | c70353f | 2013-06-28 14:40:38 -0700 | [diff] [blame] | 436 | * Set bits 0+1 of BIOS_RESET_CPL to indicate to the CPU |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 437 | * that BIOS has initialized memory and power management |
| 438 | */ |
| 439 | bios_reset_cpl = MCHBAR8(BIOS_RESET_CPL); |
Duncan Laurie | c70353f | 2013-06-28 14:40:38 -0700 | [diff] [blame] | 440 | bios_reset_cpl |= 3; |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 441 | MCHBAR8(BIOS_RESET_CPL) = bios_reset_cpl; |
| 442 | printk(BIOS_DEBUG, "Set BIOS_RESET_CPL\n"); |
| 443 | |
| 444 | /* Configure turbo power limits 1ms after reset complete bit */ |
| 445 | mdelay(1); |
| 446 | set_power_limits(28); |
| 447 | |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 448 | /* Set here before graphics PM init */ |
| 449 | MCHBAR32(0x5500) = 0x00100001; |
| 450 | } |
| 451 | |
| 452 | static void northbridge_enable(device_t dev) |
| 453 | { |
| 454 | #if CONFIG_HAVE_ACPI_RESUME |
Aaron Durbin | bf396ff | 2013-02-11 21:50:35 -0600 | [diff] [blame] | 455 | struct romstage_handoff *handoff; |
| 456 | |
| 457 | handoff = cbmem_find(CBMEM_ID_ROMSTAGE_INFO); |
| 458 | |
| 459 | if (handoff == NULL) { |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 460 | printk(BIOS_DEBUG, "Unknown boot method, assuming normal.\n"); |
Aaron Durbin | bf396ff | 2013-02-11 21:50:35 -0600 | [diff] [blame] | 461 | acpi_slp_type = 0; |
| 462 | } else if (handoff->s3_resume) { |
| 463 | printk(BIOS_DEBUG, "S3 Resume.\n"); |
| 464 | acpi_slp_type = 3; |
| 465 | } else { |
| 466 | printk(BIOS_DEBUG, "Normal boot.\n"); |
| 467 | acpi_slp_type = 0; |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 468 | } |
| 469 | #endif |
| 470 | } |
| 471 | |
| 472 | static struct pci_operations intel_pci_ops = { |
| 473 | .set_subsystem = intel_set_subsystem, |
| 474 | }; |
| 475 | |
| 476 | static struct device_operations mc_ops = { |
| 477 | .read_resources = mc_read_resources, |
Aaron Durbin | c12ef97 | 2012-12-18 14:22:49 -0600 | [diff] [blame] | 478 | .set_resources = pci_dev_set_resources, |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 479 | .enable_resources = pci_dev_enable_resources, |
| 480 | .init = northbridge_init, |
| 481 | .enable = northbridge_enable, |
| 482 | .scan_bus = 0, |
| 483 | .ops_pci = &intel_pci_ops, |
| 484 | }; |
| 485 | |
Aaron Durbin | c1989c4 | 2012-12-11 17:13:17 -0600 | [diff] [blame] | 486 | static const struct pci_driver mc_driver_hsw_mobile __pci_driver = { |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 487 | .ops = &mc_ops, |
| 488 | .vendor = PCI_VENDOR_ID_INTEL, |
Aaron Durbin | 21efd8c | 2013-01-17 09:39:39 -0600 | [diff] [blame] | 489 | .device = PCI_DEVICE_ID_HSW_MOBILE, |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 490 | }; |
| 491 | |
Duncan Laurie | df7be71 | 2012-12-17 11:22:57 -0800 | [diff] [blame] | 492 | static const struct pci_driver mc_driver_hsw_ult __pci_driver = { |
| 493 | .ops = &mc_ops, |
| 494 | .vendor = PCI_VENDOR_ID_INTEL, |
Aaron Durbin | 21efd8c | 2013-01-17 09:39:39 -0600 | [diff] [blame] | 495 | .device = PCI_DEVICE_ID_HSW_ULT, |
Duncan Laurie | df7be71 | 2012-12-17 11:22:57 -0800 | [diff] [blame] | 496 | }; |
| 497 | |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 498 | static void cpu_bus_init(device_t dev) |
| 499 | { |
Aaron Durbin | 7af2069 | 2013-01-14 14:54:41 -0600 | [diff] [blame] | 500 | bsp_init_and_start_aps(dev->link_list); |
Aaron Durbin | 76c3700 | 2012-10-30 09:03:43 -0500 | [diff] [blame] | 501 | } |
| 502 | |
| 503 | static void cpu_bus_noop(device_t dev) |
| 504 | { |
| 505 | } |
| 506 | |
| 507 | static struct device_operations cpu_bus_ops = { |
| 508 | .read_resources = cpu_bus_noop, |
| 509 | .set_resources = cpu_bus_noop, |
| 510 | .enable_resources = cpu_bus_noop, |
| 511 | .init = cpu_bus_init, |
| 512 | .scan_bus = 0, |
| 513 | }; |
| 514 | |
| 515 | static void enable_dev(device_t dev) |
| 516 | { |
| 517 | /* Set the operations if it is a special bus type */ |
| 518 | if (dev->path.type == DEVICE_PATH_DOMAIN) { |
| 519 | dev->ops = &pci_domain_ops; |
| 520 | } else if (dev->path.type == DEVICE_PATH_CPU_CLUSTER) { |
| 521 | dev->ops = &cpu_bus_ops; |
| 522 | } |
| 523 | } |
| 524 | |
| 525 | struct chip_operations northbridge_intel_haswell_ops = { |
| 526 | CHIP_NAME("Intel i7 (Haswell) integrated Northbridge") |
| 527 | .enable_dev = enable_dev, |
| 528 | }; |