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nb/amd/amdmct/mct_ddr3: Force DRAM retraining on every boot 

Stability issues have arisen on multiple Family 15h systems
when configuration restoration is enabled.  In all cases these
stability issues resolved by allowing the RAM to go through a
full training cycle.

Change-Id: I017e0dd5120110124d5b5d5276befef6f7740614
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/12034
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
This commit is contained in:
Timothy Pearson 2015-08-07 23:59:33 -05:00 committed by Stefan Reinauer
parent 71b8f01b62
commit eb295a3e69
1 changed files with 10 additions and 0 deletions
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10
src/northbridge/amd/amdmct/mct_ddr3/mct_d.c
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@ -1735,6 +1735,16 @@ restartinit:
allow_config_restore = 0; allow_config_restore = 0;
} }
/* FIXME
* Stability issues have arisen on multiple Family 15h systems
* when configuration restoration is enabled. In all cases these
* stability issues resolved by allowing the RAM to go through a
* full training cycle.
*
* Debug and reenable this!
*/
allow_config_restore = 0;
for (Node = 0; Node < MAX_NODES_SUPPORTED; Node++) { for (Node = 0; Node < MAX_NODES_SUPPORTED; Node++) {
struct DCTStatStruc *pDCTstat; struct DCTStatStruc *pDCTstat;
pDCTstat = pDCTstatA + Node; pDCTstat = pDCTstatA + Node;