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

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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;