Angel Pons | 4b42983 | 2020-04-02 23:48:50 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 2 | |
| 3 | #include <stdint.h> |
Kyösti Mälkki | 13f6650 | 2019-03-03 08:01:05 +0200 | [diff] [blame] | 4 | #include <device/mmio.h> |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 5 | #include <pc80/mc146818rtc.h> |
| 6 | #include <console/console.h> |
| 7 | #include "gm45.h" |
| 8 | |
| 9 | typedef struct { |
| 10 | u32 addr[RANKS_PER_CHANNEL]; |
Martin Roth | 468d02c | 2019-10-23 21:44:42 -0600 | [diff] [blame] | 11 | unsigned int count; |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 12 | } address_bunch_t; |
| 13 | |
| 14 | /* Read Training. */ |
Angel Pons | 01661bb | 2021-05-13 19:09:01 +0200 | [diff] [blame] | 15 | #define CxRDTy_MCHBAR(ch, bl) (0x14b0 + ((ch) * 0x0100) + ((7 - (bl)) * 4)) |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 16 | #define CxRDTy_T_SHIFT 20 |
| 17 | #define CxRDTy_T_MASK (0xf << CxRDTy_T_SHIFT) |
Angel Pons | 01661bb | 2021-05-13 19:09:01 +0200 | [diff] [blame] | 18 | #define CxRDTy_T(t) (((t) << CxRDTy_T_SHIFT) & CxRDTy_T_MASK) |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 19 | #define CxRDTy_P_SHIFT 16 |
| 20 | #define CxRDTy_P_MASK (0x7 << CxRDTy_P_SHIFT) |
Angel Pons | 01661bb | 2021-05-13 19:09:01 +0200 | [diff] [blame] | 21 | #define CxRDTy_P(p) (((p) << CxRDTy_P_SHIFT) & CxRDTy_P_MASK) |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 22 | static const u32 read_training_schedule[] = { |
| 23 | 0xfefefefe, 0x7f7f7f7f, 0xbebebebe, 0xdfdfdfdf, |
| 24 | 0xeeeeeeee, 0xf7f7f7f7, 0xfafafafa, 0xfdfdfdfd, |
| 25 | 0x00000000, 0x81818181, 0x40404040, 0x21212121, |
| 26 | 0x10101010, 0x09090909, 0x04040404, 0x03030303, |
| 27 | 0x10101010, 0x11111111, 0xeeeeeeee, 0xefefefef, |
| 28 | 0x10101010, 0x11111111, 0xeeeeeeee, 0xefefefef, |
| 29 | 0x10101010, 0xefefefef, 0x10101010, 0xefefefef, |
| 30 | 0x10101010, 0xefefefef, 0x10101010, 0xefefefef, |
| 31 | 0x00000000, 0xffffffff, 0x00000000, 0xffffffff, |
| 32 | 0x00000000, 0xffffffff, 0x00000000, 0x00000000, |
| 33 | }; |
| 34 | #define READ_TIMING_P_SHIFT 3 |
| 35 | #define READ_TIMING_P_BOUND (1 << READ_TIMING_P_SHIFT) |
| 36 | #define READ_TIMING_T_BOUND 14 |
| 37 | typedef struct { |
| 38 | int t; |
| 39 | int p; |
| 40 | } read_timing_t; |
Nico Huber | 393619b | 2013-05-14 12:28:42 +0200 | [diff] [blame] | 41 | static void print_read_timing(const int msg_lvl, const char *const msg, |
| 42 | const int lane, const int channel, |
| 43 | const read_timing_t *const timing) |
| 44 | { |
Nico Huber | 0624f92 | 2017-04-15 15:57:28 +0200 | [diff] [blame] | 45 | printk(msg_lvl, "%sbyte lane %d, ch %d: %d.%d\n", |
Nico Huber | 393619b | 2013-05-14 12:28:42 +0200 | [diff] [blame] | 46 | msg, lane, channel, timing->t, timing->p); |
| 47 | } |
| 48 | |
Nico Huber | 35e45c0 | 2013-05-14 11:25:59 +0200 | [diff] [blame] | 49 | static int normalize_read_timing(read_timing_t *const timing) |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 50 | { |
| 51 | while (timing->p >= READ_TIMING_P_BOUND) { |
| 52 | timing->t++; |
| 53 | timing->p -= READ_TIMING_P_BOUND; |
| 54 | } |
| 55 | while (timing->p < 0) { |
| 56 | timing->t--; |
| 57 | timing->p += READ_TIMING_P_BOUND; |
| 58 | } |
Nico Huber | 35e45c0 | 2013-05-14 11:25:59 +0200 | [diff] [blame] | 59 | if (timing->t < 0) { |
| 60 | printk(BIOS_WARNING, |
| 61 | "Timing underflow during read training.\n"); |
| 62 | timing->t = 0; |
| 63 | timing->p = 0; |
| 64 | return -1; |
| 65 | } else if (timing->t >= READ_TIMING_T_BOUND) { |
| 66 | printk(BIOS_WARNING, |
| 67 | "Timing overflow during read training.\n"); |
| 68 | timing->t = READ_TIMING_T_BOUND - 1; |
| 69 | timing->p = READ_TIMING_P_BOUND - 1; |
| 70 | return -1; |
| 71 | } |
| 72 | return 0; |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 73 | } |
Nico Huber | 35e45c0 | 2013-05-14 11:25:59 +0200 | [diff] [blame] | 74 | static int program_read_timing(const int ch, const int lane, |
| 75 | read_timing_t *const timing) |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 76 | { |
Nico Huber | 35e45c0 | 2013-05-14 11:25:59 +0200 | [diff] [blame] | 77 | if (normalize_read_timing(timing) < 0) |
| 78 | return -1; |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 79 | |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 80 | u32 reg = mchbar_read32(CxRDTy_MCHBAR(ch, lane)); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 81 | reg &= ~(CxRDTy_T_MASK | CxRDTy_P_MASK); |
| 82 | reg |= CxRDTy_T(timing->t) | CxRDTy_P(timing->p); |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 83 | mchbar_write32(CxRDTy_MCHBAR(ch, lane), reg); |
Nico Huber | 35e45c0 | 2013-05-14 11:25:59 +0200 | [diff] [blame] | 84 | |
| 85 | return 0; |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 86 | } |
| 87 | /* Returns 1 on success, 0 on failure. */ |
| 88 | static int read_training_test(const int channel, const int lane, |
| 89 | const address_bunch_t *const addresses) |
| 90 | { |
| 91 | int i; |
| 92 | |
| 93 | const int lane_offset = lane & 4; |
| 94 | const int lane_mask = 0xff << ((lane & ~4) << 3); |
| 95 | |
| 96 | for (i = 0; i < addresses->count; ++i) { |
| 97 | unsigned int offset; |
| 98 | for (offset = lane_offset; offset < 320; offset += 8) { |
Kevin Paul Herbert | bde6d30 | 2014-12-24 18:43:20 -0800 | [diff] [blame] | 99 | const u32 read = read32((u32 *)(addresses->addr[i] + offset)); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 100 | const u32 good = read_training_schedule[offset >> 3]; |
| 101 | if ((read & lane_mask) != (good & lane_mask)) |
| 102 | return 0; |
| 103 | } |
| 104 | } |
| 105 | return 1; |
| 106 | } |
Nico Huber | 35e45c0 | 2013-05-14 11:25:59 +0200 | [diff] [blame] | 107 | static int read_training_find_lower(const int channel, const int lane, |
| 108 | const address_bunch_t *const addresses, |
| 109 | read_timing_t *const lower) |
Nico Huber | 26a6435 | 2013-05-14 11:43:03 +0200 | [diff] [blame] | 110 | { |
| 111 | /* Coarse search for good t. */ |
| 112 | program_read_timing(channel, lane, lower); |
| 113 | while (!read_training_test(channel, lane, addresses)) { |
| 114 | ++lower->t; |
Nico Huber | 35e45c0 | 2013-05-14 11:25:59 +0200 | [diff] [blame] | 115 | if (program_read_timing(channel, lane, lower) < 0) |
| 116 | return -1; |
Nico Huber | 26a6435 | 2013-05-14 11:43:03 +0200 | [diff] [blame] | 117 | } |
| 118 | |
| 119 | /* Step back, then fine search for good p. */ |
Nico Huber | 35e45c0 | 2013-05-14 11:25:59 +0200 | [diff] [blame] | 120 | if (lower->t <= 0) |
| 121 | /* Can't step back, zero is good. */ |
| 122 | return 0; |
| 123 | |
| 124 | --lower->t; |
| 125 | program_read_timing(channel, lane, lower); |
| 126 | while (!read_training_test(channel, lane, addresses)) { |
| 127 | ++lower->p; |
| 128 | if (program_read_timing(channel, lane, lower) < 0) |
| 129 | return -1; |
Nico Huber | 26a6435 | 2013-05-14 11:43:03 +0200 | [diff] [blame] | 130 | } |
Nico Huber | 35e45c0 | 2013-05-14 11:25:59 +0200 | [diff] [blame] | 131 | |
| 132 | return 0; |
Nico Huber | 26a6435 | 2013-05-14 11:43:03 +0200 | [diff] [blame] | 133 | } |
Nico Huber | 35e45c0 | 2013-05-14 11:25:59 +0200 | [diff] [blame] | 134 | static int read_training_find_upper(const int channel, const int lane, |
| 135 | const address_bunch_t *const addresses, |
| 136 | read_timing_t *const upper) |
Nico Huber | 26a6435 | 2013-05-14 11:43:03 +0200 | [diff] [blame] | 137 | { |
Nico Huber | 35e45c0 | 2013-05-14 11:25:59 +0200 | [diff] [blame] | 138 | if (program_read_timing(channel, lane, upper) < 0) |
| 139 | return -1; |
| 140 | if (!read_training_test(channel, lane, addresses)) { |
| 141 | printk(BIOS_WARNING, |
| 142 | "Read training failure: limits too narrow.\n"); |
| 143 | return -1; |
| 144 | } |
Nico Huber | 26a6435 | 2013-05-14 11:43:03 +0200 | [diff] [blame] | 145 | /* Coarse search for bad t. */ |
| 146 | do { |
| 147 | ++upper->t; |
Nico Huber | 35e45c0 | 2013-05-14 11:25:59 +0200 | [diff] [blame] | 148 | if (program_read_timing(channel, lane, upper) < 0) |
| 149 | return -1; |
Nico Huber | 26a6435 | 2013-05-14 11:43:03 +0200 | [diff] [blame] | 150 | } while (read_training_test(channel, lane, addresses)); |
| 151 | /* Fine search for bad p. */ |
| 152 | --upper->t; |
| 153 | program_read_timing(channel, lane, upper); |
| 154 | while (read_training_test(channel, lane, addresses)) { |
| 155 | ++upper->p; |
Nico Huber | 35e45c0 | 2013-05-14 11:25:59 +0200 | [diff] [blame] | 156 | if (program_read_timing(channel, lane, upper) < 0) |
| 157 | return -1; |
Nico Huber | 26a6435 | 2013-05-14 11:43:03 +0200 | [diff] [blame] | 158 | } |
Nico Huber | 35e45c0 | 2013-05-14 11:25:59 +0200 | [diff] [blame] | 159 | |
| 160 | return 0; |
Nico Huber | 26a6435 | 2013-05-14 11:43:03 +0200 | [diff] [blame] | 161 | } |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 162 | static void read_training_per_lane(const int channel, const int lane, |
| 163 | const address_bunch_t *const addresses) |
| 164 | { |
| 165 | read_timing_t lower, upper; |
| 166 | |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 167 | mchbar_setbits32(CxRDTy_MCHBAR(channel, lane), 3 << 25); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 168 | |
Nico Huber | 26a6435 | 2013-05-14 11:43:03 +0200 | [diff] [blame] | 169 | /*** Search lower bound. ***/ |
| 170 | |
| 171 | /* Start at zero. */ |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 172 | lower.t = 0; |
| 173 | lower.p = 0; |
Nico Huber | 35e45c0 | 2013-05-14 11:25:59 +0200 | [diff] [blame] | 174 | if (read_training_find_lower(channel, lane, addresses, &lower) < 0) |
| 175 | die("Read training failure: lower bound.\n"); |
Nico Huber | 0624f92 | 2017-04-15 15:57:28 +0200 | [diff] [blame] | 176 | print_read_timing(RAM_DEBUG, "Lower bound for ", lane, channel, &lower); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 177 | |
Nico Huber | 26a6435 | 2013-05-14 11:43:03 +0200 | [diff] [blame] | 178 | /*** Search upper bound. ***/ |
| 179 | |
| 180 | /* Start at lower + 1t. */ |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 181 | upper.t = lower.t + 1; |
| 182 | upper.p = lower.p; |
Nico Huber | 35e45c0 | 2013-05-14 11:25:59 +0200 | [diff] [blame] | 183 | if (read_training_find_upper(channel, lane, addresses, &upper) < 0) |
| 184 | /* Overflow on upper edge is not fatal. */ |
| 185 | printk(BIOS_WARNING, "Read training failure: upper bound.\n"); |
Nico Huber | 0624f92 | 2017-04-15 15:57:28 +0200 | [diff] [blame] | 186 | print_read_timing(RAM_DEBUG, "Upper bound for ", lane, channel, &upper); |
Nico Huber | 26a6435 | 2013-05-14 11:43:03 +0200 | [diff] [blame] | 187 | |
Nico Huber | 35e45c0 | 2013-05-14 11:25:59 +0200 | [diff] [blame] | 188 | /*** Calculate and program mean value. ***/ |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 189 | |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 190 | lower.p += lower.t << READ_TIMING_P_SHIFT; |
| 191 | upper.p += upper.t << READ_TIMING_P_SHIFT; |
| 192 | const int mean_p = (lower.p + upper.p) >> 1; |
| 193 | /* lower becomes the mean value. */ |
| 194 | lower.t = mean_p >> READ_TIMING_P_SHIFT; |
| 195 | lower.p = mean_p & (READ_TIMING_P_BOUND - 1); |
| 196 | program_read_timing(channel, lane, &lower); |
Nico Huber | 0624f92 | 2017-04-15 15:57:28 +0200 | [diff] [blame] | 197 | printk(RAM_DEBUG, "Final timings for "); |
| 198 | print_read_timing(BIOS_DEBUG, "", lane, channel, &lower); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 199 | } |
| 200 | static void perform_read_training(const dimminfo_t *const dimms) |
| 201 | { |
| 202 | int ch, i; |
| 203 | |
| 204 | FOR_EACH_POPULATED_CHANNEL(dimms, ch) { |
| 205 | address_bunch_t addresses = { { 0, }, 0 }; |
| 206 | FOR_EACH_POPULATED_RANK_IN_CHANNEL(dimms, ch, i) |
| 207 | addresses.addr[addresses.count++] = |
| 208 | raminit_get_rank_addr(ch, i); |
| 209 | |
| 210 | for (i = 0; i < addresses.count; ++i) { |
| 211 | /* Write test pattern. */ |
| 212 | unsigned int offset; |
| 213 | for (offset = 0; offset < 320; offset += 4) |
Kevin Paul Herbert | bde6d30 | 2014-12-24 18:43:20 -0800 | [diff] [blame] | 214 | write32((u32 *)(addresses.addr[i] + offset), |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 215 | read_training_schedule[offset >> 3]); |
| 216 | } |
| 217 | |
| 218 | for (i = 0; i < 8; ++i) |
| 219 | read_training_per_lane(ch, i, &addresses); |
| 220 | } |
| 221 | } |
| 222 | static void read_training_store_results(void) |
| 223 | { |
| 224 | u8 bytes[TOTAL_CHANNELS * 8]; |
| 225 | int ch, i; |
| 226 | |
| 227 | /* Store one timing pair in one byte each. */ |
| 228 | FOR_EACH_CHANNEL(ch) { |
| 229 | for (i = 0; i < 8; ++i) { |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 230 | const u32 bl_reg = mchbar_read32(CxRDTy_MCHBAR(ch, i)); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 231 | bytes[(ch * 8) + i] = |
| 232 | (((bl_reg & CxRDTy_T_MASK) >> CxRDTy_T_SHIFT) |
| 233 | << 4) | |
| 234 | ((bl_reg & CxRDTy_P_MASK) >> CxRDTy_P_SHIFT); |
| 235 | } |
| 236 | } |
| 237 | |
| 238 | /* Store everything in CMOS above 128 bytes. */ |
| 239 | for (i = 0; i < (TOTAL_CHANNELS * 8); ++i) |
| 240 | cmos_write(bytes[i], CMOS_READ_TRAINING + i); |
| 241 | } |
| 242 | static void read_training_restore_results(void) |
| 243 | { |
| 244 | u8 bytes[TOTAL_CHANNELS * 8]; |
| 245 | int ch, i; |
| 246 | |
| 247 | /* Read from CMOS. */ |
| 248 | for (i = 0; i < (TOTAL_CHANNELS * 8); ++i) |
| 249 | bytes[i] = cmos_read(CMOS_READ_TRAINING + i); |
| 250 | |
| 251 | /* Program restored results. */ |
| 252 | FOR_EACH_CHANNEL(ch) { |
| 253 | for (i = 0; i < 8; ++i) { |
| 254 | const int t = bytes[(ch * 8) + i] >> 4; |
| 255 | const int p = bytes[(ch * 8) + i] & 7; |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 256 | u32 bl_reg = mchbar_read32(CxRDTy_MCHBAR(ch, i)); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 257 | bl_reg &= ~(CxRDTy_T_MASK | CxRDTy_P_MASK); |
| 258 | bl_reg |= (3 << 25) | CxRDTy_T(t) | CxRDTy_P(p); |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 259 | mchbar_write32(CxRDTy_MCHBAR(ch, i), bl_reg); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 260 | printk(BIOS_DEBUG, "Restored timings for byte lane " |
| 261 | "%d on channel %d: %d.%d\n", i, ch, t, p); |
| 262 | } |
| 263 | } |
| 264 | } |
| 265 | void raminit_read_training(const dimminfo_t *const dimms, const int s3resume) |
| 266 | { |
| 267 | if (!s3resume) { |
| 268 | perform_read_training(dimms); |
| 269 | read_training_store_results(); |
| 270 | } else { |
| 271 | read_training_restore_results(); |
| 272 | } |
| 273 | raminit_reset_readwrite_pointers(); |
| 274 | } |
| 275 | |
| 276 | /* Write Training. */ |
| 277 | #define CxWRTy_T_SHIFT 28 |
| 278 | #define CxWRTy_T_MASK (0xf << CxWRTy_T_SHIFT) |
Angel Pons | 01661bb | 2021-05-13 19:09:01 +0200 | [diff] [blame] | 279 | #define CxWRTy_T(t) (((t) << CxWRTy_T_SHIFT) & CxWRTy_T_MASK) |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 280 | #define CxWRTy_P_SHIFT 24 |
| 281 | #define CxWRTy_P_MASK (0x7 << CxWRTy_P_SHIFT) |
Angel Pons | 01661bb | 2021-05-13 19:09:01 +0200 | [diff] [blame] | 282 | #define CxWRTy_P(p) (((p) << CxWRTy_P_SHIFT) & CxWRTy_P_MASK) |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 283 | #define CxWRTy_F_SHIFT 18 |
| 284 | #define CxWRTy_F_MASK (0x3 << CxWRTy_F_SHIFT) |
Angel Pons | 01661bb | 2021-05-13 19:09:01 +0200 | [diff] [blame] | 285 | #define CxWRTy_F(f) (((f) << CxWRTy_F_SHIFT) & CxWRTy_F_MASK) |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 286 | #define CxWRTy_D_SHIFT 16 |
| 287 | #define CxWRTy_D_MASK (0x3 << CxWRTy_D_SHIFT) |
| 288 | #define CxWRTy_BELOW_D (0x3 << CxWRTy_D_SHIFT) |
| 289 | #define CxWRTy_ABOVE_D (0x1 << CxWRTy_D_SHIFT) |
| 290 | static const u32 write_training_schedule[] = { |
| 291 | 0xffffffff, 0x00000000, 0xffffffff, 0x00000000, |
| 292 | 0xffffffff, 0x00000000, 0xffffffff, 0x00000000, |
| 293 | 0xffffffff, 0x00000000, 0xffffffff, 0x00000000, |
| 294 | 0xffffffff, 0x00000000, 0xffffffff, 0x00000000, |
| 295 | 0xefefefef, 0x10101010, 0xefefefef, 0x10101010, |
| 296 | 0xefefefef, 0x10101010, 0xefefefef, 0x10101010, |
| 297 | 0xefefefef, 0x10101010, 0xefefefef, 0x10101010, |
| 298 | 0xefefefef, 0x10101010, 0xefefefef, 0x10101010, |
| 299 | 0xefefefef, 0xeeeeeeee, 0x11111111, 0x10101010, |
| 300 | 0xefefefef, 0xeeeeeeee, 0x11111111, 0x10101010, |
| 301 | 0xefefefef, 0xeeeeeeee, 0x11111111, 0x10101010, |
| 302 | 0xefefefef, 0xeeeeeeee, 0x11111111, 0x10101010, |
| 303 | 0x03030303, 0x04040404, 0x09090909, 0x10101010, |
| 304 | 0x21212121, 0x40404040, 0x81818181, 0x00000000, |
| 305 | 0x03030303, 0x04040404, 0x09090909, 0x10101010, |
| 306 | 0x21212121, 0x40404040, 0x81818181, 0x00000000, |
| 307 | 0xfdfdfdfd, 0xfafafafa, 0xf7f7f7f7, 0xeeeeeeee, |
| 308 | 0xdfdfdfdf, 0xbebebebe, 0x7f7f7f7f, 0xfefefefe, |
| 309 | 0xfdfdfdfd, 0xfafafafa, 0xf7f7f7f7, 0xeeeeeeee, |
| 310 | 0xdfdfdfdf, 0xbebebebe, 0x7f7f7f7f, 0xfefefefe, |
| 311 | }; |
| 312 | /* for raw card types A, B and C: MEM_CLOCK_1067MT? X group X lower/upper */ |
| 313 | static const u32 write_training_bytelane_masks_abc[2][4][2] = { |
| 314 | { /* clock < MEM_CLOCK_1067MT */ |
| 315 | { 0xffffffff, 0x00000000 }, { 0x00000000, 0x00000000 }, |
| 316 | { 0x00000000, 0xffffffff }, { 0x00000000, 0x00000000 }, |
| 317 | }, |
| 318 | { /* clock == MEM_CLOCK_1067MT */ |
| 319 | { 0x0000ffff, 0x00000000 }, { 0xffff0000, 0x00000000 }, |
| 320 | { 0x00000000, 0x0000ffff }, { 0x00000000, 0xffff0000 }, |
| 321 | }, |
| 322 | }; |
| 323 | /* for raw card type F: group X lower/upper */ |
| 324 | static const u32 write_training_bytelane_masks_f[4][2] = { |
| 325 | { 0xff00ff00, 0x00000000 }, { 0x00ff00ff, 0x00000000 }, |
| 326 | { 0x00000000, 0xff00ff00 }, { 0x00000000, 0x00ff00ff }, |
| 327 | }; |
| 328 | #define WRITE_TIMING_P_SHIFT 3 |
| 329 | #define WRITE_TIMING_P_BOUND (1 << WRITE_TIMING_P_SHIFT) |
| 330 | #define WRITE_TIMING_F_BOUND 4 |
| 331 | typedef struct { |
| 332 | int f; |
| 333 | int t; |
| 334 | const int t_bound; |
| 335 | int p; |
| 336 | } write_timing_t; |
Nico Huber | 393619b | 2013-05-14 12:28:42 +0200 | [diff] [blame] | 337 | static void print_write_timing(const int msg_lvl, const char *const msg, |
| 338 | const int group, const int channel, |
| 339 | const write_timing_t *const timing) |
| 340 | { |
Nico Huber | 0624f92 | 2017-04-15 15:57:28 +0200 | [diff] [blame] | 341 | printk(msg_lvl, "%sgroup %d, ch %d: %d.%d.%d\n", |
Nico Huber | 393619b | 2013-05-14 12:28:42 +0200 | [diff] [blame] | 342 | msg, group, channel, timing->f, timing->t, timing->p); |
| 343 | } |
| 344 | |
Nico Huber | 12276ac | 2013-05-14 12:15:05 +0200 | [diff] [blame] | 345 | static int normalize_write_timing(write_timing_t *const timing) |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 346 | { |
| 347 | while (timing->p >= WRITE_TIMING_P_BOUND) { |
| 348 | timing->t++; |
| 349 | timing->p -= WRITE_TIMING_P_BOUND; |
| 350 | } |
| 351 | while (timing->p < 0) { |
| 352 | timing->t--; |
| 353 | timing->p += WRITE_TIMING_P_BOUND; |
| 354 | } |
| 355 | while (timing->t >= timing->t_bound) { |
| 356 | timing->f++; |
| 357 | timing->t -= timing->t_bound; |
| 358 | } |
| 359 | while (timing->t < 0) { |
| 360 | timing->f--; |
| 361 | timing->t += timing->t_bound; |
| 362 | } |
Nico Huber | 12276ac | 2013-05-14 12:15:05 +0200 | [diff] [blame] | 363 | if (timing->f < 0) { |
| 364 | printk(BIOS_WARNING, |
| 365 | "Timing underflow during write training.\n"); |
| 366 | timing->f = 0; |
| 367 | timing->t = 0; |
| 368 | timing->p = 0; |
| 369 | return -1; |
| 370 | } else if (timing->f >= WRITE_TIMING_F_BOUND) { |
| 371 | printk(BIOS_WARNING, |
| 372 | "Timing overflow during write training.\n"); |
| 373 | timing->f = WRITE_TIMING_F_BOUND - 1; |
| 374 | timing->t = timing->t_bound - 1; |
| 375 | timing->p = WRITE_TIMING_P_BOUND - 1; |
| 376 | return -1; |
| 377 | } |
| 378 | return 0; |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 379 | } |
Nico Huber | 12276ac | 2013-05-14 12:15:05 +0200 | [diff] [blame] | 380 | static int program_write_timing(const int ch, const int group, |
| 381 | write_timing_t *const timing, int memclk1067) |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 382 | { |
| 383 | /* MEM_CLOCK_1067MT? X lower/upper */ |
| 384 | const u32 d_bounds[2][2] = { { 1, 6 }, { 2, 9 } }; |
| 385 | |
Nico Huber | 12276ac | 2013-05-14 12:15:05 +0200 | [diff] [blame] | 386 | if (normalize_write_timing(timing) < 0) |
| 387 | return -1; |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 388 | |
| 389 | const int f = timing->f; |
| 390 | const int t = timing->t; |
| 391 | const int p = (memclk1067 && (((t == 9) && (timing->p >= 4)) || |
| 392 | ((t == 10) && (timing->p < 4)))) |
| 393 | ? 4 : timing->p; |
| 394 | const int d = |
| 395 | (t <= d_bounds[memclk1067][0]) ? CxWRTy_BELOW_D : |
| 396 | ((t > d_bounds[memclk1067][1]) ? CxWRTy_ABOVE_D : 0); |
| 397 | |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 398 | u32 reg = mchbar_read32(CxWRTy_MCHBAR(ch, group)); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 399 | reg &= ~(CxWRTy_T_MASK | CxWRTy_P_MASK | CxWRTy_F_MASK); |
| 400 | reg &= ~CxWRTy_D_MASK; |
| 401 | reg |= CxWRTy_T(t) | CxWRTy_P(p) | CxWRTy_F(f) | d; |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 402 | mchbar_write32(CxWRTy_MCHBAR(ch, group), reg); |
Nico Huber | 12276ac | 2013-05-14 12:15:05 +0200 | [diff] [blame] | 403 | |
| 404 | return 0; |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 405 | } |
| 406 | /* Returns 1 on success, 0 on failure. */ |
| 407 | static int write_training_test(const address_bunch_t *const addresses, |
| 408 | const u32 *const masks) |
| 409 | { |
| 410 | int i, ret = 0; |
| 411 | |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 412 | const u32 mmarb0 = mchbar_read32(0x0220); |
| 413 | const u8 wrcctl = mchbar_read8(0x0218); |
| 414 | mchbar_setbits32(0x0220, 0xf << 28); |
| 415 | mchbar_setbits8(0x0218, 0x1 << 4); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 416 | |
| 417 | for (i = 0; i < addresses->count; ++i) { |
| 418 | const unsigned int addr = addresses->addr[i]; |
| 419 | unsigned int off; |
| 420 | for (off = 0; off < 640; off += 8) { |
| 421 | const u32 pattern = write_training_schedule[off >> 3]; |
Kevin Paul Herbert | bde6d30 | 2014-12-24 18:43:20 -0800 | [diff] [blame] | 422 | write32((u32 *)(addr + off), pattern); |
| 423 | write32((u32 *)(addr + off + 4), pattern); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 424 | } |
| 425 | |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 426 | mchbar_setbits8(0x78, 1); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 427 | |
| 428 | for (off = 0; off < 640; off += 8) { |
| 429 | const u32 good = write_training_schedule[off >> 3]; |
Kevin Paul Herbert | bde6d30 | 2014-12-24 18:43:20 -0800 | [diff] [blame] | 430 | const u32 read1 = read32((u32 *)(addr + off)); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 431 | if ((read1 & masks[0]) != (good & masks[0])) |
| 432 | goto _bad_timing_out; |
Kevin Paul Herbert | bde6d30 | 2014-12-24 18:43:20 -0800 | [diff] [blame] | 433 | const u32 read2 = read32((u32 *)(addr + off + 4)); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 434 | if ((read2 & masks[1]) != (good & masks[1])) |
| 435 | goto _bad_timing_out; |
| 436 | } |
| 437 | } |
| 438 | ret = 1; |
| 439 | |
| 440 | _bad_timing_out: |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 441 | mchbar_write32(0x0220, mmarb0); |
| 442 | mchbar_write8(0x0218, wrcctl); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 443 | |
| 444 | return ret; |
| 445 | } |
Nico Huber | 12276ac | 2013-05-14 12:15:05 +0200 | [diff] [blame] | 446 | static int write_training_find_lower(const int ch, const int group, |
| 447 | const address_bunch_t *const addresses, |
| 448 | const u32 masks[][2], const int memclk1067, |
| 449 | write_timing_t *const lower) |
Nico Huber | 08bee23 | 2013-05-14 11:58:44 +0200 | [diff] [blame] | 450 | { |
| 451 | program_write_timing(ch, group, lower, memclk1067); |
| 452 | /* Coarse search for good t. */ |
| 453 | while (!write_training_test(addresses, masks[group])) { |
| 454 | ++lower->t; |
Nico Huber | 12276ac | 2013-05-14 12:15:05 +0200 | [diff] [blame] | 455 | if (program_write_timing(ch, group, lower, memclk1067) < 0) |
| 456 | return -1; |
Nico Huber | 08bee23 | 2013-05-14 11:58:44 +0200 | [diff] [blame] | 457 | } |
Nico Huber | 12276ac | 2013-05-14 12:15:05 +0200 | [diff] [blame] | 458 | /* Step back, then fine search for good p. */ |
| 459 | if ((lower->f <= 0) && (lower->t <= 0)) |
| 460 | /* Can't step back, zero is good. */ |
| 461 | return 0; |
| 462 | |
Nico Huber | 08bee23 | 2013-05-14 11:58:44 +0200 | [diff] [blame] | 463 | --lower->t; |
| 464 | program_write_timing(ch, group, lower, memclk1067); |
| 465 | while (!write_training_test(addresses, masks[group])) { |
| 466 | ++lower->p; |
Nico Huber | 12276ac | 2013-05-14 12:15:05 +0200 | [diff] [blame] | 467 | if (program_write_timing(ch, group, lower, memclk1067) < 0) |
| 468 | return -1; |
Nico Huber | 08bee23 | 2013-05-14 11:58:44 +0200 | [diff] [blame] | 469 | } |
Nico Huber | 12276ac | 2013-05-14 12:15:05 +0200 | [diff] [blame] | 470 | |
| 471 | return 0; |
Nico Huber | 08bee23 | 2013-05-14 11:58:44 +0200 | [diff] [blame] | 472 | } |
Nico Huber | 12276ac | 2013-05-14 12:15:05 +0200 | [diff] [blame] | 473 | static int write_training_find_upper(const int ch, const int group, |
| 474 | const address_bunch_t *const addresses, |
| 475 | const u32 masks[][2], const int memclk1067, |
| 476 | write_timing_t *const upper) |
Nico Huber | 08bee23 | 2013-05-14 11:58:44 +0200 | [diff] [blame] | 477 | { |
Nico Huber | 12276ac | 2013-05-14 12:15:05 +0200 | [diff] [blame] | 478 | if (program_write_timing(ch, group, upper, memclk1067) < 0) |
| 479 | return -1; |
| 480 | if (!write_training_test(addresses, masks[group])) { |
| 481 | printk(BIOS_WARNING, |
| 482 | "Write training failure; limits too narrow.\n"); |
| 483 | return -1; |
| 484 | } |
| 485 | /* Coarse search for bad t. */ |
Nico Huber | 08bee23 | 2013-05-14 11:58:44 +0200 | [diff] [blame] | 486 | while (write_training_test(addresses, masks[group])) { |
| 487 | ++upper->t; |
Nico Huber | 12276ac | 2013-05-14 12:15:05 +0200 | [diff] [blame] | 488 | if (program_write_timing(ch, group, upper, memclk1067) < 0) |
| 489 | return -1; |
Nico Huber | 08bee23 | 2013-05-14 11:58:44 +0200 | [diff] [blame] | 490 | } |
Nico Huber | 12276ac | 2013-05-14 12:15:05 +0200 | [diff] [blame] | 491 | /* Fine search for bad p. */ |
Nico Huber | 08bee23 | 2013-05-14 11:58:44 +0200 | [diff] [blame] | 492 | --upper->t; |
| 493 | program_write_timing(ch, group, upper, memclk1067); |
| 494 | while (write_training_test(addresses, masks[group])) { |
| 495 | ++upper->p; |
Nico Huber | 12276ac | 2013-05-14 12:15:05 +0200 | [diff] [blame] | 496 | if (program_write_timing(ch, group, upper, memclk1067) < 0) |
| 497 | return -1; |
Nico Huber | 08bee23 | 2013-05-14 11:58:44 +0200 | [diff] [blame] | 498 | } |
Nico Huber | 12276ac | 2013-05-14 12:15:05 +0200 | [diff] [blame] | 499 | |
| 500 | return 0; |
Nico Huber | 08bee23 | 2013-05-14 11:58:44 +0200 | [diff] [blame] | 501 | } |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 502 | static void write_training_per_group(const int ch, const int group, |
| 503 | const address_bunch_t *const addresses, |
| 504 | const u32 masks[][2], const int memclk1067) |
| 505 | { |
| 506 | const int t_bound = memclk1067 ? 12 : 11; |
| 507 | write_timing_t lower = { 0, 0, t_bound, 0 }, |
| 508 | upper = { 0, 0, t_bound, 0 }; |
| 509 | |
Nico Huber | 08bee23 | 2013-05-14 11:58:44 +0200 | [diff] [blame] | 510 | /*** Search lower bound. ***/ |
| 511 | |
| 512 | /* Start at -1f from current values. */ |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 513 | const u32 reg = mchbar_read32(CxWRTy_MCHBAR(ch, group)); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 514 | lower.t = (reg >> 12) & 0xf; |
| 515 | lower.p = (reg >> 8) & 0x7; |
| 516 | lower.f = ((reg >> 2) & 0x3) - 1; |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 517 | |
Nico Huber | 12276ac | 2013-05-14 12:15:05 +0200 | [diff] [blame] | 518 | if (write_training_find_lower(ch, group, addresses, |
| 519 | masks, memclk1067, &lower) < 0) |
| 520 | die("Write training failure: lower bound.\n"); |
Nico Huber | 0624f92 | 2017-04-15 15:57:28 +0200 | [diff] [blame] | 521 | print_write_timing(RAM_DEBUG, "Lower bound for ", group, ch, &lower); |
Nico Huber | 08bee23 | 2013-05-14 11:58:44 +0200 | [diff] [blame] | 522 | |
| 523 | /*** Search upper bound. ***/ |
| 524 | |
| 525 | /* Start at lower + 3t. */ |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 526 | upper.t = lower.t + 3; |
| 527 | upper.p = lower.p; |
| 528 | upper.f = lower.f; |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 529 | |
Nico Huber | 12276ac | 2013-05-14 12:15:05 +0200 | [diff] [blame] | 530 | if (write_training_find_upper(ch, group, addresses, |
| 531 | masks, memclk1067, &upper) < 0) |
| 532 | printk(BIOS_WARNING, "Write training failure: upper bound.\n"); |
Nico Huber | 0624f92 | 2017-04-15 15:57:28 +0200 | [diff] [blame] | 533 | print_write_timing(RAM_DEBUG, "Upper bound for ", group, ch, &upper); |
Nico Huber | 08bee23 | 2013-05-14 11:58:44 +0200 | [diff] [blame] | 534 | |
| 535 | /*** Calculate and program mean value. ***/ |
| 536 | |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 537 | lower.t += lower.f * lower.t_bound; |
| 538 | lower.p += lower.t << WRITE_TIMING_P_SHIFT; |
| 539 | upper.t += upper.f * upper.t_bound; |
| 540 | upper.p += upper.t << WRITE_TIMING_P_SHIFT; |
| 541 | /* lower becomes the mean value. */ |
| 542 | const int mean_p = (lower.p + upper.p) >> 1; |
| 543 | lower.f = mean_p / (lower.t_bound << WRITE_TIMING_P_SHIFT); |
| 544 | lower.t = (mean_p >> WRITE_TIMING_P_SHIFT) % lower.t_bound; |
| 545 | lower.p = mean_p & (WRITE_TIMING_P_BOUND - 1); |
| 546 | program_write_timing(ch, group, &lower, memclk1067); |
Nico Huber | 0624f92 | 2017-04-15 15:57:28 +0200 | [diff] [blame] | 547 | printk(RAM_DEBUG, "Final timings for "); |
| 548 | print_write_timing(BIOS_DEBUG, "", group, ch, &lower); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 549 | } |
| 550 | static void perform_write_training(const int memclk1067, |
| 551 | const dimminfo_t *const dimms) |
| 552 | { |
| 553 | const int cardF[] = { dimms[0].card_type == 0xf, |
| 554 | dimms[1].card_type == 0xf }; |
| 555 | int ch, r, group; |
| 556 | |
| 557 | address_bunch_t addr[2] = { { { 0, }, 0 }, { { 0, }, 0 }, }; |
| 558 | /* Add check if channel A is populated, i.e. if cardF[0] is valid. |
| 559 | * Otherwise we would write channel A registers when DIMM in channel B |
| 560 | * is of raw card type A, B or C (cardF[1] == 0) even if channel A is |
| 561 | * not populated. |
| 562 | * Needs raw card type A, B or C for testing. */ |
| 563 | if ((dimms[0].card_type != 0) && (cardF[0] == cardF[1])) { |
| 564 | /* Common path for both channels. */ |
| 565 | FOR_EACH_POPULATED_RANK(dimms, ch, r) |
| 566 | addr[0].addr[addr[0].count++] = |
| 567 | raminit_get_rank_addr(ch, r); |
| 568 | } else { |
| 569 | FOR_EACH_POPULATED_RANK(dimms, ch, r) |
| 570 | addr[ch].addr[addr[ch].count++] = |
| 571 | raminit_get_rank_addr(ch, r); |
| 572 | } |
| 573 | |
| 574 | FOR_EACH_CHANNEL(ch) if (addr[ch].count > 0) { |
| 575 | const u32 (*const masks)[2] = (!cardF[ch]) |
| 576 | ? write_training_bytelane_masks_abc[memclk1067] |
| 577 | : write_training_bytelane_masks_f; |
| 578 | for (group = 0; group < 4; ++group) { |
| 579 | if (!masks[group][0] && !masks[group][1]) |
| 580 | continue; |
| 581 | write_training_per_group( |
| 582 | ch, group, &addr[ch], masks, memclk1067); |
| 583 | } |
| 584 | } |
| 585 | } |
| 586 | static void write_training_store_results(void) |
| 587 | { |
| 588 | u8 bytes[TOTAL_CHANNELS * 4 * 2]; /* two bytes per group */ |
| 589 | int ch, i; |
| 590 | |
| 591 | /* Store one T/P pair in one, F in the other byte. */ |
| 592 | /* We could save six bytes by putting all F values in two bytes. */ |
| 593 | FOR_EACH_CHANNEL(ch) { |
| 594 | for (i = 0; i < 4; ++i) { |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 595 | const u32 reg = mchbar_read32(CxWRTy_MCHBAR(ch, i)); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 596 | bytes[(ch * 8) + (i * 2)] = |
| 597 | (((reg & CxWRTy_T_MASK) |
| 598 | >> CxWRTy_T_SHIFT) << 4) | |
| 599 | ((reg & CxWRTy_P_MASK) >> CxWRTy_P_SHIFT); |
| 600 | bytes[(ch * 8) + (i * 2) + 1] = |
| 601 | ((reg & CxWRTy_F_MASK) >> CxWRTy_F_SHIFT); |
| 602 | } |
| 603 | } |
| 604 | |
| 605 | /* Store everything in CMOS above 128 bytes. */ |
| 606 | for (i = 0; i < (TOTAL_CHANNELS * 4 * 2); ++i) |
| 607 | cmos_write(bytes[i], CMOS_WRITE_TRAINING + i); |
| 608 | } |
| 609 | static void write_training_restore_results(const int memclk1067) |
| 610 | { |
| 611 | const int t_bound = memclk1067 ? 12 : 11; |
| 612 | |
| 613 | u8 bytes[TOTAL_CHANNELS * 4 * 2]; /* two bytes per group */ |
| 614 | int ch, i; |
| 615 | |
| 616 | /* Read from CMOS. */ |
| 617 | for (i = 0; i < (TOTAL_CHANNELS * 4 * 2); ++i) |
| 618 | bytes[i] = cmos_read(CMOS_WRITE_TRAINING + i); |
| 619 | |
| 620 | /* Program with original program_write_timing(). */ |
| 621 | FOR_EACH_CHANNEL(ch) { |
| 622 | for (i = 0; i < 4; ++i) { |
| 623 | write_timing_t timing = { 0, 0, t_bound, 0 }; |
| 624 | timing.f = bytes[(ch * 8) + (i * 2) + 1] & 3; |
| 625 | timing.t = bytes[(ch * 8) + (i * 2)] >> 4; |
| 626 | timing.p = bytes[(ch * 8) + (i * 2)] & 7; |
| 627 | program_write_timing(ch, i, &timing, memclk1067); |
| 628 | printk(BIOS_DEBUG, "Restored timings for group %d " |
| 629 | "on channel %d: %d.%d.%d\n", |
| 630 | i, ch, timing.f, timing.t, timing.p); |
| 631 | } |
| 632 | } |
| 633 | } |
| 634 | void raminit_write_training(const mem_clock_t ddr3clock, |
| 635 | const dimminfo_t *const dimms, |
| 636 | const int s3resume) |
| 637 | { |
| 638 | const int memclk1067 = ddr3clock == MEM_CLOCK_1067MT; |
| 639 | |
| 640 | if (!s3resume) { |
| 641 | perform_write_training(memclk1067, dimms); |
| 642 | write_training_store_results(); |
| 643 | } else { |
| 644 | write_training_restore_results(memclk1067); |
| 645 | } |
| 646 | raminit_reset_readwrite_pointers(); |
| 647 | } |