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authorTimothy Pearson <tpearson@raptorengineeringinc.com>2016-05-07 17:26:40 -0500
committerTimothy Pearson <tpearson@raptorengineeringinc.com>2016-05-09 20:44:11 +0200
commit84da72c988955c7bdeccf889b1f682582a428752 (patch)
treef3bf0fa44f57e04b6301ef3d48029703829c2d50 /src/northbridge/amd
parent251ce85b585b75c90d80b4ae3d0ecd0769afba8a (diff)
downloadcoreboot-84da72c988955c7bdeccf889b1f682582a428752.tar.xz
nb/amd/mct_ddr3: Report correct DIMM size in SMBIOS structure
The existing DIMM size calculation for DDR3 was incorrect. Use the recommended calculation from the DDR3 SPD specification. Change-Id: Id6a39e2b38b5d9f483341ebef8f2960ae52bda6c Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com> Reviewed-on: https://review.coreboot.org/14739 Tested-by: build bot (Jenkins) Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/northbridge/amd')
-rw-r--r--src/northbridge/amd/amdfam10/northbridge.c21
-rw-r--r--src/northbridge/amd/amdmct/mct_ddr3/mct_d.c2
-rw-r--r--src/northbridge/amd/amdmct/mct_ddr3/mct_d.h2
3 files changed, 22 insertions, 3 deletions
diff --git a/src/northbridge/amd/amdfam10/northbridge.c b/src/northbridge/amd/amdfam10/northbridge.c
index da93175b21..19acab61db 100644
--- a/src/northbridge/amd/amdfam10/northbridge.c
+++ b/src/northbridge/amd/amdfam10/northbridge.c
@@ -1199,12 +1199,27 @@ static int amdfam10_get_smbios_data17(int* count, int handle, int parent_handle,
* Primary data width * 2^(#rows) * 2^(#cols) * #banks * #ranks
*/
uint8_t width, rows, cols, banks, ranks;
- width = 8;
+ uint64_t chip_size;
+ uint32_t chip_width;
rows = mem_info->dct_stat[node].DimmRows[slot];
cols = mem_info->dct_stat[node].DimmCols[slot];
ranks = mem_info->dct_stat[node].DimmRanks[slot];
banks = mem_info->dct_stat[node].DimmBanks[slot];
- uint64_t dimm_size_bytes = width * (1ULL << rows) * (1ULL << cols) * banks * ranks;
+#if IS_ENABLED(CONFIG_DIMM_DDR3)
+ chip_size = mem_info->dct_stat[node].DimmChipSize[slot];
+ chip_width = mem_info->dct_stat[node].DimmChipWidth[slot];
+#else
+ chip_size = 0;
+ chip_width = 0;
+#endif
+ uint64_t dimm_size_bytes;
+ if (IS_ENABLED(CONFIG_DIMM_DDR3)) {
+ width = mem_info->dct_stat[node].DimmWidth[slot];
+ dimm_size_bytes = ((width / chip_width) * chip_size * ranks) / 8;
+ } else {
+ width = 8;
+ dimm_size_bytes = width * (1ULL << rows) * (1ULL << cols) * banks * ranks;
+ }
memset(t, 0, sizeof(struct smbios_type17));
t->type = SMBIOS_MEMORY_DEVICE;
@@ -1213,7 +1228,7 @@ static int amdfam10_get_smbios_data17(int* count, int handle, int parent_handle,
t->length = sizeof(struct smbios_type17) - 2;
if (dimm_size_bytes > 0x800000000) {
t->size = 0x7FFF;
- t->extended_size = dimm_size_bytes;
+ t->extended_size = dimm_size_bytes >> 16;
} else {
t->size = dimm_size_bytes / (1024*1024);
t->size &= (~0x8000); /* size specified in megabytes */
diff --git a/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c b/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c
index 1e1ef188c8..4fa7e66ae3 100644
--- a/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c
+++ b/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c
@@ -5706,6 +5706,8 @@ static u8 DIMMPresence_D(struct MCTStatStruc *pMCTstat,
pDCTstat->DimmRanks[i] = ((pDCTstat->spd_data.spd_bytes[i][SPD_Organization] & 0x38) >> 3) + 1;
pDCTstat->DimmBanks[i] = 1ULL << (((pDCTstat->spd_data.spd_bytes[i][SPD_Density] & 0x70) >> 4) + 3);
pDCTstat->DimmWidth[i] = 1ULL << ((pDCTstat->spd_data.spd_bytes[i][SPD_BusWidth] & 0x7) + 3);
+ pDCTstat->DimmChipSize[i] = 1ULL << ((pDCTstat->spd_data.spd_bytes[i][SPD_Density] & 0xf) + 28);
+ pDCTstat->DimmChipWidth[i] = 1ULL << ((pDCTstat->spd_data.spd_bytes[i][SPD_Organization] & 0x7) + 2);
}
/* Check supported voltage(s) */
pDCTstat->DimmSupportedVoltages[i] = pDCTstat->spd_data.spd_bytes[i][SPD_Voltage] & 0x7;
diff --git a/src/northbridge/amd/amdmct/mct_ddr3/mct_d.h b/src/northbridge/amd/amdmct/mct_ddr3/mct_d.h
index a5a3d88044..e1d9da53fb 100644
--- a/src/northbridge/amd/amdmct/mct_ddr3/mct_d.h
+++ b/src/northbridge/amd/amdmct/mct_ddr3/mct_d.h
@@ -621,6 +621,8 @@ struct DCTStatStruc { /* A per Node structure*/
uint8_t DimmRanks[MAX_DIMMS_SUPPORTED];
uint8_t DimmBanks[MAX_DIMMS_SUPPORTED];
uint8_t DimmWidth[MAX_DIMMS_SUPPORTED];
+ uint64_t DimmChipSize[MAX_DIMMS_SUPPORTED];
+ uint32_t DimmChipWidth[MAX_DIMMS_SUPPORTED];
uint8_t DimmRegistered[MAX_DIMMS_SUPPORTED];
uint8_t DimmLoadReduced[MAX_DIMMS_SUPPORTED];