diff options
author | Richard Spiegel <richard.spiegel@silverbackltd.com> | 2017-11-09 16:04:35 -0700 |
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committer | Aaron Durbin <adurbin@chromium.org> | 2017-11-10 18:22:53 +0000 |
commit | 67c2a7b487bfaea90303faa5e8ef9e33c3000f1c (patch) | |
tree | 7a3fbda67b43bbcc64a27c6ba2b94745a14f3cd4 /src/soc/amd/stoneyridge | |
parent | 185988234d05e99188e3022056792b73313ea5a6 (diff) | |
download | coreboot-67c2a7b487bfaea90303faa5e8ef9e33c3000f1c.tar.xz |
soc/amd/common: Add DRAM clear option to northbridge.c
AmdInitPost() can be instructed to clear DRAM after a reset or to
preserve it. Use SetMemParams() to tell AGESA which action to take.
Note that any overrides from OemPostParams (OemCustomize.c) are not
affected by this change.
Change-Id: Ie18e7a265b6e0a00c0cc8912db6361087f772d2d
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-on: https://review.coreboot.org/21856
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/amd/stoneyridge')
-rw-r--r-- | src/soc/amd/stoneyridge/chip.h | 4 | ||||
-rw-r--r-- | src/soc/amd/stoneyridge/romstage.c | 14 |
2 files changed, 18 insertions, 0 deletions
diff --git a/src/soc/amd/stoneyridge/chip.h b/src/soc/amd/stoneyridge/chip.h index de6585e164..4623800848 100644 --- a/src/soc/amd/stoneyridge/chip.h +++ b/src/soc/amd/stoneyridge/chip.h @@ -24,6 +24,10 @@ struct soc_amd_stoneyridge_config { u8 spdAddrLookup[MAX_NODES][MAX_DRAM_CH][MAX_DIMMS_PER_CH]; + enum { + DRAM_CONTENTS_KEEP, + DRAM_CONTENTS_CLEAR + } dram_clear_on_reset; }; typedef struct soc_amd_stoneyridge_config config_t; diff --git a/src/soc/amd/stoneyridge/romstage.c b/src/soc/amd/stoneyridge/romstage.c index a152c1f399..9b22761f9e 100644 --- a/src/soc/amd/stoneyridge/romstage.c +++ b/src/soc/amd/stoneyridge/romstage.c @@ -111,3 +111,17 @@ asmlinkage void car_stage_entry(void) post_code(0x50); /* Should never see this post code. */ } + +void SetMemParams(AMD_POST_PARAMS *PostParams) +{ + const struct soc_amd_stoneyridge_config *cfg; + const struct device *dev = dev_find_slot(0, GNB_DEVFN); + + if (!dev || !dev->chip_info) { + printk(BIOS_ERR, "ERROR: Could not find SoC devicetree config\n"); + return; + } + + cfg = dev->chip_info; + PostParams->MemConfig.EnableMemClr = cfg->dram_clear_on_reset; +} |