[coreboot-gerrit] Change in coreboot[master]: nb/sandybridge: Add a kconfig option to ignore XMP max DIMMs
Vagiz Tarkhanov (Code Review)
gerrit at coreboot.org
Mon Oct 2 15:47:27 CEST 2017
Vagiz Tarkhanov has uploaded this change for review. ( https://review.coreboot.org/21841
Change subject: nb/sandybridge: Add a kconfig option to ignore XMP max DIMMs
......................................................................
nb/sandybridge: Add a kconfig option to ignore XMP max DIMMs
XMP profiles can have a restriction on max supported DIMMs per channel,
but many configurations work with more DIMMs.
This is relevant on mainboards with 2 DIMM slots per channel (usually 4
in total). Populating both slots with DIMMs that support XMP profiles only
with 1 DIMM per channel turns off said XMP profiles.
Change-Id: I1f22d981afcef0ee73785823b0a943cf3d3564e3
Signed-off-by: Vagiz Trakhanov <rakkin at autistici.org>
---
M src/northbridge/intel/sandybridge/Kconfig
M src/northbridge/intel/sandybridge/raminit.c
2 files changed, 11 insertions(+), 1 deletion(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/41/21841/1
diff --git a/src/northbridge/intel/sandybridge/Kconfig b/src/northbridge/intel/sandybridge/Kconfig
index 1a47f0d..5ffb796 100644
--- a/src/northbridge/intel/sandybridge/Kconfig
+++ b/src/northbridge/intel/sandybridge/Kconfig
@@ -54,6 +54,15 @@
Disabled by default as it might causes system instability.
Handle with care!
+config NATIVE_RAMINIT_IGNORE_XMP_MAX_DIMMS
+ bool "Ignore XMP profile max DIMMs per channel"
+ default n
+ depends on USE_NATIVE_RAMINIT
+ help
+ Ignore the max DIMMs per channel restriciton defined in XMP profiles.
+ Disabled by default as it might causes system instability.
+ Handle with care!
+
config CBFS_SIZE
hex
default 0x100000
diff --git a/src/northbridge/intel/sandybridge/raminit.c b/src/northbridge/intel/sandybridge/raminit.c
index bdba748..6e4d63f 100644
--- a/src/northbridge/intel/sandybridge/raminit.c
+++ b/src/northbridge/intel/sandybridge/raminit.c
@@ -230,7 +230,8 @@
if (dimm->dimm[channel][slot].dram_type != SPD_MEMORY_TYPE_SDRAM_DDR3) {
printram("No valid XMP profile found.\n");
spd_decode_ddr3(&dimm->dimm[channel][slot], spd[spd_slot]);
- } else if (dimms_on_channel > dimm->dimm[channel][slot].dimms_per_channel) {
+ } else if ((dimms_on_channel > dimm->dimm[channel][slot].dimms_per_channel)
+ && !IS_ENABLED(CONFIG_NATIVE_RAMINIT_IGNORE_XMP_MAX_DIMMS)) {
printram("XMP profile supports %u DIMMs, but %u DIMMs are installed.\n",
dimm->dimm[channel][slot].dimms_per_channel,
dimms_on_channel);
--
To view, visit https://review.coreboot.org/21841
To unsubscribe, visit https://review.coreboot.org/settings
Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I1f22d981afcef0ee73785823b0a943cf3d3564e3
Gerrit-Change-Number: 21841
Gerrit-PatchSet: 1
Gerrit-Owner: Vagiz Tarkhanov <rakkin at autistici.org>
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