Timothy Pearson (tpearson@raptorengineeringinc.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/8260
-gerrit
commit 25d969e6ddccd168fcc0825d08b4124d92edcd7d Author: Timothy Pearson tpearson@raptorengineeringinc.com Date: Fri Jan 23 20:19:44 2015 -0600
amd/amdfam10: Fix reset during AMD Family 10h FID/VID setup
Reset was caused by invalid MSR access due to index off-by-one error. Verified against AMD BKDG.
TEST: ASUS KFSN4-DRE booted K10 CPUs with proper FID/VID values.
Change-Id: I943748a9a0389a75102675e1722ab3a7d1ce6a49 Signed-off-by: Timothy Pearson tpearson@raptorengineeringinc.com --- src/cpu/amd/model_10xxx/fidvid.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/src/cpu/amd/model_10xxx/fidvid.c b/src/cpu/amd/model_10xxx/fidvid.c index d3c67a9..ad31b8d 100644 --- a/src/cpu/amd/model_10xxx/fidvid.c +++ b/src/cpu/amd/model_10xxx/fidvid.c @@ -1,6 +1,7 @@ /* * This file is part of the coreboot project. * + * Copyright (C) 2015 Timothy Pearson tpearson@raptorengineeringinc.com, Raptor Engineering * Copyright (C) 2007 Advanced Micro Devices, Inc. * * This program is free software; you can redistribute it and/or modify @@ -322,7 +323,7 @@ static void recalculateVsSlamTimeSettingOnCorePre(device_t dev)
/* Get PSmax's index */ msr = rdmsr(0xC0010061); - bValue = (u8) ((msr.lo >> PS_MAX_VAL_SHFT) & BIT_MASK_3); + bValue = (u8) (((msr.lo >> PS_MAX_VAL_SHFT) & BIT_MASK_3) - 1);
/* Get PSmax's VID */ msr = rdmsr(0xC0010064 + bValue);