[coreboot-gerrit] New patch to review for coreboot: nb/amd/mct_ddr3: Warn if MaxRdLatency training fails on Family 15h

[Timothy Pearson (tpearson@raptorengineeringinc.com)]

Timothy Pearson (tpearson at raptorengineeringinc.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/14545

-gerrit

commit 1b2ec690e53b2cbd2e79276952eebc14d4a58dbd
Author: Timothy Pearson <tpearson at raptorengineeringinc.com>
Date:   Fri Apr 29 01:40:30 2016 -0500

    nb/amd/mct_ddr3: Warn if MaxRdLatency training fails on Family 15h
    
    Change-Id: Idb948acd1a508379f600fbd2fd40fb26b7571d7c
    Signed-off-by: Timothy Pearson <tpearson at raptorengineeringinc.com>
---
 src/northbridge/amd/amdmct/mct_ddr3/mctsrc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/northbridge/amd/amdmct/mct_ddr3/mctsrc.c b/src/northbridge/amd/amdmct/mct_ddr3/mctsrc.c
index 77ae483..be95647 100644
--- a/src/northbridge/amd/amdmct/mct_ddr3/mctsrc.c
+++ b/src/northbridge/amd/amdmct/mct_ddr3/mctsrc.c
@@ -1690,6 +1690,9 @@ static void dqsTrainMaxRdLatency_SW_Fam15(struct MCTStatStruc *pMCTstat,
 				break;
 			Set_NB32_index_wait_DCT(dev, Channel, index_reg, 0x00000050, 0x13131313);
 		}
+		dword = Get_NB32_DCT(dev, Channel, 0x268) & 0x3ffff;
+		if (dword)
+			printk(BIOS_ERR, "WARNING: MaxRdLatency training FAILED!  Attempting to continue but your system may be unstable...\n");
 
 		/* 2.10.5.8.5.1.5 */
 		nb_pstate = 0;