[coreboot-gerrit] Patch merged into coreboot/master: amd/amdmct/mct_ddr3: Use training values from previous boot if possible

[gerrit at coreboot.org]

the following patch was just integrated into master:
commit df1fb9c05f822b5a84c802617d3bad7d049dcd76
Author: Timothy Pearson <tpearson at raptorengineeringinc.com>
Date:   Thu Jun 4 00:11:03 2015 -0500

    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 at raptorengineeringinc.com>
    Reviewed-on: http://review.coreboot.org/11976
    Tested-by: Raptor Engineering Automated Test Stand <noreply at raptorengineeringinc.com>
    Tested-by: build bot (Jenkins)
    Reviewed-by: Ronald G. Minnich <rminnich at gmail.com>


See http://review.coreboot.org/11976 for details.

-gerrit