diff options
| author | Timothy Pearson <tpearson@raptorengineeringinc.com> | 2015-06-04 00:11:03 -0500 |
|---|---|---|
| committer | Ronald G. Minnich <rminnich@gmail.com> | 2015-11-11 06:14:20 +0100 |
| commit | df1fb9c05f822b5a84c802617d3bad7d049dcd76 (patch) | |
| tree | eb4fc73a5365d91f4702b15342d67581eed0a0e6 /src/mainboard | |
| parent | 1b708656b2f347ab05bd89643322f86b7110a814 (diff) | |
amd/amdmct/mct_ddr3: Use training values from previous boot if possible
DRAM training accounts for most of the romstage startup time, yet
if the hardware configuration has not changed from the previous boot
the previously discovered training values are still valid. Use them
if the DIMM configuration has not changed since the last boot.
The SPD values of all installed DIMMs are hashed and stored in the S3
resume data area of the main system Flash device. If a DIMM is changed
the hash will almost certainly change as well, forcing retraining on next
boot.
Change-Id: I37ed277b16476d38e4af76c6ae827a575c6b017d
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/11976
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/asus/kgpe-d16/cmos.layout | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mainboard/asus/kgpe-d16/cmos.layout b/src/mainboard/asus/kgpe-d16/cmos.layout index 264c893a76..b64a85b2a7 100644 --- a/src/mainboard/asus/kgpe-d16/cmos.layout +++ b/src/mainboard/asus/kgpe-d16/cmos.layout @@ -38,6 +38,7 @@ entries 458 4 e 11 hypertransport_speed_limit 462 2 e 12 minimum_memory_voltage 464 1 e 2 compute_unit_siblings +465 1 r 0 allow_spd_nvram_cache_restore 477 1 e 1 ieee1394_controller 728 256 h 0 user_data 984 16 h 0 check_sum |