diff options
Diffstat (limited to 'resources/libreboot/patch/coreboot/369b561315ca68d0cdedc38208105a513c7139b5/grub/kcma-d8/0018-nb-amdmct-mct_ddr3-Enable-mainboard-voltage-set.patch')
| -rw-r--r-- | resources/libreboot/patch/coreboot/369b561315ca68d0cdedc38208105a513c7139b5/grub/kcma-d8/0018-nb-amdmct-mct_ddr3-Enable-mainboard-voltage-set.patch | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/resources/libreboot/patch/coreboot/369b561315ca68d0cdedc38208105a513c7139b5/grub/kcma-d8/0018-nb-amdmct-mct_ddr3-Enable-mainboard-voltage-set.patch b/resources/libreboot/patch/coreboot/369b561315ca68d0cdedc38208105a513c7139b5/grub/kcma-d8/0018-nb-amdmct-mct_ddr3-Enable-mainboard-voltage-set.patch new file mode 100644 index 0000000..7b2fdc2 --- /dev/null +++ b/resources/libreboot/patch/coreboot/369b561315ca68d0cdedc38208105a513c7139b5/grub/kcma-d8/0018-nb-amdmct-mct_ddr3-Enable-mainboard-voltage-set.patch @@ -0,0 +1,73 @@ +From 7c59896199f78e3b7ededce1a9c2eb9a9bfa795d Mon Sep 17 00:00:00 2001 +From: Timothy Pearson <tpearson@raptorengineeringinc.com> +Date: Tue, 24 Nov 2015 14:11:53 -0600 +Subject: [PATCH 18/45] nb/amdmct/mct_ddr3: Enable mainboard voltage set + +The existing code used an incorrect macro name to check for mainboard +DRAM voltage set support, and as a result no voltages were actually +set. Furthermore, the existing code did not contain a centralized +voltage assumption for boards that did not have a DIMM voltage set +implementation. + +Use the correct macro name to test for boards with voltage set +implementation, and provide a basic fallback to 1.5V operation +for boards without a voltage set implementation. + +Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com> +--- + src/northbridge/amd/amdmct/mct_ddr3/mct_d.c | 22 +++++++++++++++++++++- + 1 file changed, 21 insertions(+), 1 deletion(-) + +diff --git a/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c b/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c +index 9724008..e1c0d4f 100644 +--- a/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c ++++ b/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c +@@ -254,6 +254,10 @@ static uint8_t dct_ddr_voltage_index(struct DCTStatStruc *pDCTstat, uint8_t dct) + uint8_t dimm; + uint8_t ddr_voltage_index = 0; + ++ /* If no DIMMs are present on this DCT, report 1.5V operation and skip checking the hardware */ ++ if (pDCTstat->DIMMValidDCT[dct] == 0) ++ return 0x1; ++ + /* Find current DDR supply voltage for this DCT */ + for (dimm = 0; dimm < MAX_DIMMS_SUPPORTED; dimm++) { + if (pDCTstat->DIMMValidDCT[dct] & (1 << dimm)) +@@ -2409,6 +2413,7 @@ static void mctAutoInitMCT_D(struct MCTStatStruc *pMCTstat, + */ + u8 Node, NodesWmem; + u32 node_sys_base; ++ uint8_t dimm; + uint8_t nvram; + uint8_t enable_cc6; + uint8_t allow_config_restore; +@@ -2498,10 +2503,25 @@ restartinit: + nvram = 0; + set_option("allow_spd_nvram_cache_restore", &nvram); + +-#if IS_ENABLED(DIMM_VOLTAGE_SET_SUPPORT) ++#if IS_ENABLED(CONFIG_DIMM_VOLTAGE_SET_SUPPORT) + printk(BIOS_DEBUG, "%s: DIMMSetVoltage\n", __func__); + DIMMSetVoltages(pMCTstat, pDCTstatA); /* Set the DIMM voltages (mainboard specific) */ + #endif ++ if (!IS_ENABLED(CONFIG_DIMM_VOLTAGE_SET_SUPPORT)) { ++ /* Assume 1.5V operation */ ++ for (Node = 0; Node < MAX_NODES_SUPPORTED; Node++) { ++ struct DCTStatStruc *pDCTstat; ++ pDCTstat = pDCTstatA + Node; ++ ++ if (!pDCTstat->NodePresent) ++ continue; ++ ++ for (dimm = 0; dimm < MAX_DIMMS_SUPPORTED; dimm++) { ++ if (pDCTstat->DIMMValid & (1 << dimm)) ++ pDCTstat->DimmConfiguredVoltage[dimm] = 0x1; ++ } ++ } ++ } + + /* If DIMM configuration has not changed since last boot restore training values */ + allow_config_restore = 1; +-- +2.1.4 + |