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coreboot-kgpe-d16/util/inteltool/ivy_memory.c
Jacob Garber a75440739d util/inteltool: Use appropriate channel for printing timings 
At least one channel must be present, so print an error if there is
not. However, we cannot always assume it will be the first channel,
so make the appropriate selection when printing the timings.

Found-by: Coverity Scan #1370{584,585,588,589,590-596,600}
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Change-Id: I6b59989242e498474782876302e0850e3e4cf2d3
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32713
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
2019-05-13 09:24:14 +00:00

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/*
* Copyright (C) 2014 Vladimir Serbinenko
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 or (at your option) any later version of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#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 = 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;
if (mr0[0] & 1) {
CAS = ((mr0[0] >> 4) & 0x7) + 12;
} else {
CAS = ((mr0[0] >> 4) & 0x7) + 4;
}
for (channel = 0; channel < 2; channel++) {
mad_dimm[channel] = read_mchbar32(0x5004 + 4 * channel);
}
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] >> 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 != ((reg >> 8) & 0xf))
printf("/* CAS mismatch: %d, %d. */\n", CAS,
(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) & 0xff;
}
printf(".mobile = %d,\n", (mr0[0] >> 12) & 1);
print_time("CAS", CAS, 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 - 4)) & 0xff;
spd[channel][slot][15] = (1 << (CAS - 4)) >> 8;
spd[channel][slot][16] =
make_spd_time(CAS, 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);
}
}
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