| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <inttypes.h> |
| #include <errno.h> |
| #include "inteltool.h" |
| |
| extern volatile uint8_t *mchbar; |
| |
| static uint32_t read_mchbar32(uint32_t addr) |
| { |
| return *(volatile uint32_t *)(mchbar + addr); |
| } |
| |
| static void |
| print_time(const char *string, unsigned long long time, unsigned long long tCK) |
| { |
| printf(".%s = %lld /* %lld clocks = %.3lf ns */,\n", |
| string, time, time, (time * tCK) / 256.0); |
| } |
| |
| static unsigned int |
| make_spd_time(unsigned long long time, unsigned long long tCK) |
| { |
| return (time * tCK) >> 5; |
| } |
| |
| static u16 spd_ddr3_calc_crc(u8 * spd) |
| { |
| int n_crc, i; |
| u8 *ptr; |
| u16 crc; |
| |
| /* Find the number of bytes covered by CRC */ |
| if (spd[0] & 0x80) { |
| n_crc = 117; |
| } else { |
| n_crc = 126; |
| } |
| |
| /* Compute the CRC */ |
| crc = 0; |
| ptr = spd; |
| while (--n_crc >= 0) { |
| crc = crc ^ (int)*ptr++ << 8; |
| for (i = 0; i < 8; ++i) |
| if (crc & 0x8000) { |
| crc = crc << 1 ^ 0x1021; |
| } else { |
| crc = crc << 1; |
| } |
| } |
| return crc; |
| } |
| |
| void ivybridge_dump_timings(const char *dump_spd_file) |
| { |
| u32 mr0[2]; |
| u32 mr1[2]; |
| u32 reg; |
| unsigned int CAS[2] = { 0 }; |
| int tWR = 0, tRFC = 0; |
| int tFAW[2], tWTR[2], tCKE[2], tRTP[2], tRRD[2]; |
| int channel, slot; |
| u32 reg_4004_b30[2] = { 0, 0 }; |
| unsigned int tREFI; |
| int rankmap[2]; |
| u32 mad_dimm[2]; |
| unsigned int tRCD[2], tXP[2], tXPDLL[2], tRAS[2], tCWL[2], tRP[2], |
| tAONPD[2]; |
| unsigned int tXSOffset; |
| int two_channels = 1; |
| struct slot_info { |
| unsigned int size_mb; |
| unsigned int ranks; |
| unsigned int width; |
| } slots[2][2]; |
| unsigned int tCK; |
| u8 spd[2][2][256]; |
| |
| memset(slots, 0, sizeof(slots)); |
| |
| for (channel = 0; channel < 2; channel++) { |
| rankmap[channel] = read_mchbar32(0xc14 + 0x100 * channel) >> 24; |
| } |
| |
| if ((rankmap[0] == 0) && (rankmap[1] == 0)) { |
| fputs("Error: no memory channels found\n", stderr); |
| exit(1); |
| } |
| |
| two_channels = rankmap[0] && rankmap[1]; |
| |
| mr0[0] = read_mchbar32(0x0004); |
| mr1[0] = read_mchbar32(0x0008); |
| mr0[1] = read_mchbar32(0x0104); |
| mr1[1] = read_mchbar32(0x0108); |
| |
| if (mr0[0] != mr0[1] && two_channels) |
| printf("MR0 mismatch: %x, %x\n", mr0[0], mr0[1]); |
| if (mr1[0] != mr1[1] && two_channels) |
| printf("MR1 mismatch: %x, %x\n", mr1[0], mr1[1]); |
| |
| reg = read_mchbar32(0x5e00) & ~0x80000000; |
| printf(" .tCK = TCK_MHZ%d,\n", 400 * reg / 3); |
| |
| tCK = (64 * 10 * 3) / reg; |
| |
| for (channel = 0; channel < 2; channel++) { |
| mad_dimm[channel] = read_mchbar32(0x5004 + 4 * channel); |
| |
| if (mr0[channel]) { |
| if (mr0[channel] & 1) { |
| CAS[channel] = ((mr0[channel] >> 4) & 0x7) + 12; |
| } else { |
| CAS[channel] = ((mr0[channel] >> 4) & 0x7) + 4; |
| } |
| } |
| } |
| |
| printf(".rankmap = { 0x%x, 0x%x },\n", rankmap[0], rankmap[1]); |
| |
| printf(".mad_dimm = { 0x%x, 0x%x },\n", mad_dimm[0], mad_dimm[1]); |
| |
| for (channel = 0; channel < 2; channel++) |
| if (rankmap[channel]) { |
| int ctWR; |
| static const u8 mr0_wr_t[12] = |
| { 1, 2, 3, 4, 0, 5, 0, 6, 0, 7, 0, 0 }; |
| reg = read_mchbar32(0x4004 + 0x400 * channel); |
| |
| ctWR = (reg >> 24) & 0x3f; |
| if (tWR && ctWR != tWR) |
| printf("/* tWR mismatch: %d, %d */\n", tWR, |
| ctWR); |
| if (!tWR) |
| tWR = ctWR; |
| if (mr0[channel] && ((mr0[channel] >> 9) & 7) != mr0_wr_t[tWR - 5]) |
| printf("/* encoded tWR mismatch: %d, %d */\n", |
| ((mr0[channel] >> 9) & 7), |
| mr0_wr_t[tWR - 5]); |
| reg_4004_b30[channel] = reg >> 30; |
| tFAW[channel] = (reg >> 16) & 0xff; |
| tWTR[channel] = (reg >> 12) & 0xf; |
| tCKE[channel] = (reg >> 8) & 0xf; |
| tRTP[channel] = (reg >> 4) & 0xf; |
| tRRD[channel] = (reg >> 0) & 0xf; |
| |
| reg = read_mchbar32(0x4000 + 0x400 * channel); |
| tRAS[channel] = reg >> 16; |
| tCWL[channel] = (reg >> 12) & 0xf; |
| if (CAS[channel]) { |
| if (CAS[channel] != ((reg >> 8) & 0xf)) |
| printf("/* CAS mismatch: %d, %d. */\n", CAS[channel], |
| (reg >> 8) & 0xf); |
| } else { |
| CAS[channel] = (reg >> 8) & 0xf; |
| } |
| tRP[channel] = (reg >> 4) & 0xf; |
| tRCD[channel] = reg & 0xf; |
| |
| reg = read_mchbar32(0x400c + channel * 0x400); |
| tXPDLL[channel] = reg & 0x1f; |
| tXP[channel] = (reg >> 5) & 7; |
| tAONPD[channel] = (reg >> 8) & 0xf; |
| } |
| printf(".mobile = %d,\n", (mr0[0] >> 12) & 1); |
| |
| if (two_channels && CAS[0] != CAS[1]) |
| printf("/* CAS mismatch: %d, %d */\n", CAS[0], CAS[1]); |
| print_time("CAS", CAS[0], tCK); |
| print_time("tWR", tWR, tCK); |
| |
| printf(".reg_4004_b30 = { %d, %d },\n", reg_4004_b30[0], |
| reg_4004_b30[1]); |
| |
| channel = (rankmap[0] != 0) ? 0 : 1; |
| |
| if (two_channels && tFAW[0] != tFAW[1]) |
| printf("/* tFAW mismatch: %d, %d */\n", tFAW[0], tFAW[1]); |
| print_time("tFAW", tFAW[channel], tCK); |
| if (two_channels && tWTR[0] != tWTR[1]) |
| printf("/* tWTR mismatch: %d, %d */\n", tWTR[0], tWTR[1]); |
| print_time("tWTR", tWTR[channel], tCK); |
| if (two_channels && tCKE[0] != tCKE[1]) |
| printf("/* tCKE mismatch: %d, %d */\n", tCKE[0], tCKE[1]); |
| print_time("tCKE", tCKE[channel], tCK); |
| if (two_channels && tRTP[0] != tRTP[1]) |
| printf("/* tRTP mismatch: %d, %d */\n", tRTP[0], tRTP[1]); |
| print_time("tRTP", tRTP[channel], tCK); |
| if (two_channels && tRRD[0] != tRRD[1]) |
| printf("/* tRRD mismatch: %d, %d */\n", tRRD[0], tRRD[1]); |
| print_time("tRRD", tRRD[channel], tCK); |
| |
| if (two_channels && tRAS[0] != tRAS[1]) |
| printf("/* tRAS mismatch: %d, %d */\n", tRAS[0], tRAS[1]); |
| print_time("tRAS", tRAS[channel], tCK); |
| |
| if (two_channels && tCWL[0] != tCWL[1]) |
| printf("/* tCWL mismatch: %d, %d */\n", tCWL[0], tCWL[1]); |
| print_time("tCWL", tCWL[channel], tCK); |
| |
| if (two_channels && tRP[0] != tRP[1]) |
| printf("/* tRP mismatch: %d, %d */\n", tRP[0], tRP[1]); |
| print_time("tRP", tRP[channel], tCK); |
| |
| if (two_channels && tRCD[0] != tRCD[1]) |
| printf("/* tRCD mismatch: %d, %d */\n", tRCD[0], tRCD[1]); |
| print_time("tRCD", tRCD[channel], tCK); |
| |
| if (two_channels && tXPDLL[0] != tXPDLL[1]) |
| printf("/* tXPDLL mismatch: %d, %d */\n", tXPDLL[0], tXPDLL[1]); |
| print_time("tXPDLL", tXPDLL[channel], tCK); |
| |
| if (two_channels && tXP[0] != tXP[1]) |
| printf("/* tXP mismatch: %d, %d */\n", tXP[0], tXP[1]); |
| print_time("tXP", tXP[channel], tCK); |
| |
| if (two_channels && tAONPD[0] != tAONPD[1]) |
| printf("/* tAONPD mismatch: %d, %d */\n", tAONPD[0], tAONPD[1]); |
| print_time("tAONPD", tAONPD[channel], tCK); |
| |
| reg = read_mchbar32(0x4298); |
| if (reg != read_mchbar32(0x4698) && two_channels) |
| printf("/* 4298 mismatch: %d, %d */\n", reg, |
| read_mchbar32(0x4698)); |
| |
| tREFI = reg & 0xffff; |
| print_time("tREFI", tREFI, tCK); |
| if ((tREFI * 9 / 1024) != (reg >> 25)) |
| printf("/* tREFI mismatch: %d, %d */\n", tREFI * 9 / 1024, |
| (reg >> 25)); |
| tRFC = (reg >> 16) & 0x1ff; |
| print_time("tRFC", tRFC, tCK); |
| |
| reg = read_mchbar32(0x42a4); |
| if (reg != read_mchbar32(0x46a4) && two_channels) |
| printf("/* 42a4 mismatch: %d, %d */\n", reg, |
| read_mchbar32(0x46a4)); |
| |
| print_time("tMOD", 8 + ((reg >> 28) & 0xf), tCK); |
| |
| tXSOffset = 512 - ((reg >> 16) & 0x3ff); |
| print_time("tXSOffset", tXSOffset, tCK); |
| if (tXSOffset != ((reg >> 12) & 0xf)) |
| printf("/* tXSOffset mismatch: %d, %d */\n", |
| tXSOffset, (reg >> 12) & 0xf); |
| if (512 != (reg & 0xfff)) |
| printf("/* tDLLK mismatch: %d, %d */\n", 512, reg & 0xfff); |
| |
| reg = read_mchbar32(0x5064); |
| printf(".reg5064b0 = 0x%x,\n", reg & 0xfff); |
| if ((reg >> 12) != 0x73) |
| printf("/* mismatch 0x%x, 0x73. */\n", reg << 12); |
| |
| unsigned int ch0size, ch1size; |
| |
| switch (read_mchbar32(0x5000)) { |
| case 0x24: |
| reg = read_mchbar32(0x5014); |
| ch1size = reg >> 24; |
| if (((reg >> 16) & 0xff) != 2 * ch1size) |
| printf("/* ch1size mismatch: %d, %d*/\n", |
| 2 * ch1size, ((ch1size >> 16) & 0xff)); |
| printf(".channel_size_mb = { ?, %d },\n", ch1size * 256); |
| break; |
| case 0x21: |
| reg = read_mchbar32(0x5014); |
| ch0size = reg >> 24; |
| if (((reg >> 16) & 0xff) != 2 * ch0size) |
| printf("/* ch0size mismatch: %d, %d*/\n", |
| 2 * ch0size, ((ch0size >> 16) & 0xff)); |
| printf(".channel_size_mb = { %d, ? },\n", ch0size * 256); |
| break; |
| } |
| |
| for (channel = 0; channel < 2; channel++) { |
| reg = mad_dimm[channel]; |
| int swap = (reg >> 16) & 1; |
| slots[channel][swap].size_mb = (reg & 0xff) * 256; |
| slots[channel][swap].ranks = 1 + ((reg >> 17) & 1); |
| slots[channel][swap].width = 8 + 8 * ((reg >> 19) & 1); |
| slots[channel][!swap].size_mb = ((reg >> 8) & 0xff) * 256; |
| slots[channel][!swap].ranks = 1 + ((reg >> 18) & 1); |
| slots[channel][!swap].width = 8 + 8 * ((reg >> 20) & 1); |
| } |
| /* Undetermined: rank mirror, other modes, asr, ext_temp. */ |
| memset(spd, 0, sizeof(spd)); |
| for (channel = 0; channel < 2; channel++) |
| for (slot = 0; slot < 2; slot++) |
| if (slots[channel][slot].size_mb) { |
| printf("/* CH%dS%d: %d MiB */\n", channel, |
| slot, slots[channel][slot].size_mb); |
| } |
| for (channel = 0; channel < 2; channel++) |
| for (slot = 0; slot < 2; slot++) |
| if (slots[channel][slot].size_mb) { |
| int capacity_shift; |
| unsigned int ras, rc, rfc, faw; |
| u16 crc; |
| capacity_shift = |
| ffs(slots[channel][slot].size_mb * |
| slots[channel][slot].width / |
| (slots[channel][slot].ranks * 64)) - 1 - |
| 5; |
| |
| spd[channel][slot][0] = 0x92; |
| spd[channel][slot][1] = 0x11; |
| spd[channel][slot][2] = 0xb; /* DDR3 */ |
| spd[channel][slot][3] = 3; /* SODIMM, should we use another type for desktop? */ |
| spd[channel][slot][4] = capacity_shift | 0; /* 8 Banks. */ |
| spd[channel][slot][5] = 0; /* FIXME */ |
| spd[channel][slot][6] = 0; /* FIXME */ |
| spd[channel][slot][7] = |
| ((slots[channel][slot].ranks - |
| 1) << 3) | (ffs(slots[channel][slot]. |
| width) - 1 - 2); |
| spd[channel][slot][8] = 3; /* Bus width 64b. No ECC yet. */ |
| spd[channel][slot][9] = 0x52; /* 2.5ps. FIXME: choose dynamically if needed. */ |
| spd[channel][slot][10] = 0x01; |
| spd[channel][slot][11] = 0x08; /* 1/8 ns. FIXME: choose dynamically if needed. */ |
| spd[channel][slot][12] = make_spd_time(1, tCK); |
| spd[channel][slot][13] = 0; |
| spd[channel][slot][14] = |
| (1 << (CAS[channel] - 4)) & 0xff; |
| spd[channel][slot][15] = (1 << (CAS[channel] - 4)) >> 8; |
| spd[channel][slot][16] = |
| make_spd_time(CAS[channel], tCK); |
| spd[channel][slot][17] = |
| make_spd_time(tWR, tCK); |
| spd[channel][slot][18] = |
| make_spd_time(tRCD[channel], tCK); |
| spd[channel][slot][19] = |
| make_spd_time(tRRD[channel], tCK); |
| spd[channel][slot][20] = |
| make_spd_time(tRP[channel], tCK); |
| ras = make_spd_time(tRAS[channel], tCK); |
| rc = 0x181; /* FIXME: should be make_spd_time(tRC, tCK). */ |
| spd[channel][slot][22] = ras; |
| spd[channel][slot][23] = rc; |
| spd[channel][slot][21] = |
| ((ras >> 8) & 0xf) | ((rc >> 4) & 0xf0); |
| rfc = make_spd_time(tRFC, tCK); |
| spd[channel][slot][24] = rfc; |
| spd[channel][slot][25] = rfc >> 8; |
| spd[channel][slot][26] = |
| make_spd_time(tWTR[channel], tCK); |
| spd[channel][slot][27] = |
| make_spd_time(tRTP[channel], tCK); |
| faw = make_spd_time(tFAW[channel], tCK); |
| spd[channel][slot][28] = faw >> 8; |
| spd[channel][slot][29] = faw; |
| spd[channel][slot][30] = 0; /* FIXME */ |
| spd[channel][slot][31] = 0; /* FIXME */ |
| spd[channel][slot][32] = 0; /* FIXME */ |
| spd[channel][slot][33] = 0; /* FIXME */ |
| spd[channel][slot][62] = 0x65; /* Reference card F. FIXME */ |
| spd[channel][slot][63] = 0; /* FIXME */ |
| crc = spd_ddr3_calc_crc(spd[channel][slot]); |
| spd[channel][slot][126] = crc; |
| spd[channel][slot][127] = crc >> 8; |
| } |
| |
| printf("/* SPD matching current mode: */\n"); |
| |
| FILE *dump_spd = NULL; |
| |
| if (dump_spd_file) { |
| dump_spd = fopen (dump_spd_file, "wb"); |
| if (!dump_spd) { |
| fprintf (stderr, "Couldn't open file %s: %s\n", dump_spd_file, |
| strerror (errno)); |
| exit (1); |
| } |
| } |
| |
| for (channel = 0; channel < 2; channel++) |
| for (slot = 0; slot < 2; slot++) |
| { |
| if (slots[channel][slot].size_mb) { |
| int i; |
| |
| printf("/* CH%dS%d */\n", channel, slot); |
| |
| for (i = 0; i < 256; i++) { |
| if ((i & 0xf) == 0x0) |
| printf("%02x: ", i); |
| printf("%02x ", spd[channel][slot][i]); |
| if ((i & 0xf) == 0xf) |
| printf("\n"); |
| } |
| printf("\n"); |
| |
| if (dump_spd) { |
| fwrite(spd[channel][slot], 1, 256, dump_spd); |
| } |
| } else { |
| if (dump_spd) { |
| char zero[256]; |
| memset (zero, 0, 256); |
| fwrite(zero, 1, 256, dump_spd); |
| } |
| } |
| } |
| if (dump_spd) { |
| fclose (dump_spd); |
| } |
| |
| } |
