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From ca270728b0d2232efb4384f645d993403f4bc24e Mon Sep 17 00:00:00 2001
From: Timothy Pearson <kb9vqf@pearsoncomputing.net>
Date: Sat, 5 Sep 2015 18:56:05 -0500
Subject: [PATCH 027/146] northbridge/amd/amdfam10: Set DIMM voltage based on
SPD data
---
src/northbridge/amd/amdfam10/acpi.c | 3 +-
src/northbridge/amd/amdfam10/northbridge.c | 73 ++++++++++++++++++++++-----
src/northbridge/amd/amdmct/mct_ddr3/mct_d.c | 6 +++
src/northbridge/amd/amdmct/mct_ddr3/mct_d.h | 6 +++
4 files changed, 73 insertions(+), 15 deletions(-)
diff --git a/src/northbridge/amd/amdfam10/acpi.c b/src/northbridge/amd/amdfam10/acpi.c
index 4b86e96..92433bb 100644
--- a/src/northbridge/amd/amdfam10/acpi.c
+++ b/src/northbridge/amd/amdfam10/acpi.c
@@ -307,8 +307,7 @@ void northbridge_acpi_write_vars(device_t device)
} else {
if((sysconf.pci1234[0] >> 12) & 0xff) { //sb chain on other than bus 0
CBST = (u8) (0x0f);
- }
- else {
+ } else {
CBST = (u8) (0x00);
}
}
diff --git a/src/northbridge/amd/amdfam10/northbridge.c b/src/northbridge/amd/amdfam10/northbridge.c
index 880129b..d0a0787 100644
--- a/src/northbridge/amd/amdfam10/northbridge.c
+++ b/src/northbridge/amd/amdfam10/northbridge.c
@@ -948,19 +948,38 @@ static int amdfam10_get_smbios_data16(int* count, int handle, unsigned long *cur
static uint16_t amdmct_mct_speed_enum_to_mhz(uint8_t speed)
{
- switch (speed) {
- case 1:
- return 200;
- case 2:
- return 266;
- case 3:
- return 333;
- case 4:
- return 400;
- case 5:
- return 533;
- default:
- return 0;
+ if (IS_ENABLED(CONFIG_DIMM_DDR2)) {
+ switch (speed) {
+ case 1:
+ return 200;
+ case 2:
+ return 266;
+ case 3:
+ return 333;
+ case 4:
+ return 400;
+ case 5:
+ return 533;
+ default:
+ return 0;
+ }
+ } else if (IS_ENABLED(CONFIG_DIMM_DDR3)) {
+ switch (speed) {
+ case 3:
+ return 333;
+ case 4:
+ return 400;
+ case 5:
+ return 533;
+ case 6:
+ return 667;
+ case 7:
+ return 800;
+ default:
+ return 0;
+ }
+ } else {
+ return 0;
}
}
@@ -1046,6 +1065,34 @@ static int amdfam10_get_smbios_data17(int* count, int handle, int parent_handle,
snprintf(string_buffer, sizeof (string_buffer), "%08X", mem_info->dct_stat[node].DimmSerialNumber[slot]);
t->serial_number = smbios_add_string(t->eos, string_buffer);
}
+ if (IS_ENABLED(CONFIG_DIMM_DDR2)) {
+ /* JEDEC specifies 1.8V only, so assume that the memory is configured for 1.8V */
+ t->minimum_voltage = 1800;
+ t->maximum_voltage = 1800;
+ t->configured_voltage = 1800;
+ } else if (IS_ENABLED(CONFIG_DIMM_DDR3)) {
+ /* Find the maximum and minimum supported voltages */
+ uint8_t supported_voltages = mem_info->dct_stat[node].DimmSupportedVoltages[slot];
+ if (supported_voltages & 0x8)
+ t->minimum_voltage = 1150;
+ else if (supported_voltages & 0x4)
+ t->minimum_voltage = 1250;
+ else if (supported_voltages & 0x2)
+ t->minimum_voltage = 1350;
+ else if (supported_voltages & 0x1)
+ t->minimum_voltage = 1500;
+
+ if (supported_voltages & 0x1)
+ t->maximum_voltage = 1500;
+ else if (supported_voltages & 0x2)
+ t->maximum_voltage = 1350;
+ else if (supported_voltages & 0x4)
+ t->maximum_voltage = 1250;
+ else if (supported_voltages & 0x8)
+ t->maximum_voltage = 1150;
+
+ t->configured_voltage = mem_info->dct_stat[node].DimmConfiguredVoltage[slot];
+ }
t->memory_error_information_handle = 0xFFFE; /* no error information handle available */
single_len = t->length + smbios_string_table_len(t->eos);
len += single_len;
diff --git a/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c b/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c
index 0c06444..303c6c7 100644
--- a/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c
+++ b/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c
@@ -327,6 +327,9 @@ restartinit:
printk(BIOS_DEBUG, "No Nodes?!\n");
goto fatalexit;
}
+
+ printk(BIOS_DEBUG, "mctAutoInitMCT_D: DIMMSetVoltage\n");
+ DIMMSetVoltages(pMCTstat, pDCTstatA); /* Set the DIMM voltages (mainboard specific) */
printk(BIOS_DEBUG, "mctAutoInitMCT_D: SyncDCTsReady_D\n");
SyncDCTsReady_D(pMCTstat, pDCTstatA); /* Make sure DCTs are ready for accesses.*/
@@ -2120,6 +2123,9 @@ static u8 DIMMPresence_D(struct MCTStatStruc *pMCTstat,
pDCTstat->DimmBanks[i] = 1ULL << (((mctRead_SPD(smbaddr, SPD_Density) & 0x70) >> 4) + 3);
pDCTstat->DimmWidth[i] = 1ULL << ((mctRead_SPD(smbaddr, SPD_BusWidth) & 0x7) + 3);
}
+ /* Check supported voltage(s) */
+ pDCTstat->DimmSupportedVoltages[i] = mctRead_SPD(smbaddr, SPD_Voltage) & 0x7;
+ pDCTstat->DimmSupportedVoltages[i] ^= 0x1; /* Invert LSB to convert from SPD format to internal bitmap format */
/* Check module type */
byte = mctRead_SPD(smbaddr, SPD_DIMMTYPE) & 0x7;
if (byte == JED_RDIMM || byte == JED_MiniRDIMM) {
diff --git a/src/northbridge/amd/amdmct/mct_ddr3/mct_d.h b/src/northbridge/amd/amdmct/mct_ddr3/mct_d.h
index c790d7e..a947c2d 100644
--- a/src/northbridge/amd/amdmct/mct_ddr3/mct_d.h
+++ b/src/northbridge/amd/amdmct/mct_ddr3/mct_d.h
@@ -206,6 +206,7 @@
#define JED_MiniRDIMM 0x5 /* Mini-RDIMM */
#define SPD_Density 4 /* Bank address bits,SDRAM capacity */
#define SPD_Addressing 5 /* Row/Column address bits */
+#define SPD_Voltage 6 /* Supported voltage bitfield */
#define SPD_Organization 7 /* rank#,Device width */
#define SPD_BusWidth 8 /* ECC, Bus width */
#define JED_ECC 8 /* ECC capability */
@@ -585,6 +586,10 @@ struct DCTStatStruc { /* A per Node structure*/
struct _sDCTStruct s_C_DCTPtr[2];
/* struct _sDCTStruct s_C_DCT1Ptr[8]; */
+ /* DIMM supported voltage bitmap ([2:0]: 1.25V, 1.35V, 1.5V) */
+ uint8_t DimmSupportedVoltages[MAX_DIMMS_SUPPORTED];
+ uint32_t DimmConfiguredVoltage[MAX_DIMMS_SUPPORTED]; /* mV */
+
uint8_t DimmRows[MAX_DIMMS_SUPPORTED];
uint8_t DimmCols[MAX_DIMMS_SUPPORTED];
uint8_t DimmRanks[MAX_DIMMS_SUPPORTED];
@@ -905,6 +910,7 @@ u32 procOdtWorkaround(struct DCTStatStruc *pDCTstat, u32 dct, u32 val);
void mct_BeforeDramInit_D(struct DCTStatStruc *pDCTstat, u32 dct);
void mctGet_DIMMAddr(struct DCTStatStruc *pDCTstat, u32 node);
void mctSMBhub_Init(u32 node);
+void DIMMSetVoltages(struct MCTStatStruc *pMCTstat, struct DCTStatStruc *pDCTstatA);
int mctRead_SPD(u32 smaddr, u32 reg);
void InterleaveNodes_D(struct MCTStatStruc *pMCTstat, struct DCTStatStruc *pDCTstatA);
void InterleaveChannels_D(struct MCTStatStruc *pMCTstat, struct DCTStatStruc *pDCTstatA);
--
1.7.9.5
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