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| author | Timothy Pearson <tpearson@raptorengineeringinc.com> | 2015-09-05 18:56:05 -0500 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2015-11-02 23:26:41 +0100 |
| commit | 2a83935d9f50e3059e7747338a700c2fceb1731a (patch) | |
| tree | b40831293a339c6743ec86e7820111c38c536113 /src/northbridge/amd/amdfam10/northbridge.c | |
| parent | 65eec4d959a847c43b5f4e92c6eee60f042fd7f6 (diff) | |
| download | coreboot-2a83935d9f50e3059e7747338a700c2fceb1731a.tar.xz | |
northbridge/amd/amdfam10: Set DIMM voltage based on SPD data
Change-Id: I67a76cf0e4ebc33fbd7dd151bb68dce1fc6ba680
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/11957
Tested-by: build bot (Jenkins)
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Diffstat (limited to 'src/northbridge/amd/amdfam10/northbridge.c')
| -rw-r--r-- | src/northbridge/amd/amdfam10/northbridge.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/northbridge/amd/amdfam10/northbridge.c b/src/northbridge/amd/amdfam10/northbridge.c index 2846ed3015..2e7fc3a990 100644 --- a/src/northbridge/amd/amdfam10/northbridge.c +++ b/src/northbridge/amd/amdfam10/northbridge.c @@ -1063,6 +1063,36 @@ 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)) { +#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]; +#endif + } t->memory_error_information_handle = 0xFFFE; /* no error information handle available */ single_len = t->length + smbios_string_table_len(t->eos); len += single_len; |