From 01d56d4276c800f4aa53acd657aed24676a52f4d Mon Sep 17 00:00:00 2001 From: Arne Georg Gleditsch Date: Fri, 17 Sep 2010 00:13:52 +0000 Subject: Clear bit 35 of msr c001_102a in Fam10 rev C cores. Signed-off-by: Arne Georg Gleditsch Acked-by: Scott Duplichan git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5817 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/cpu/amd/model_10xxx/defaults.h | 2 +- src/cpu/amd/model_10xxx/model_10xxx_init.c | 4 +++- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/src/cpu/amd/model_10xxx/defaults.h b/src/cpu/amd/model_10xxx/defaults.h index 2fbfbb26fc..9a0e349e0a 100644 --- a/src/cpu/amd/model_10xxx/defaults.h +++ b/src/cpu/amd/model_10xxx/defaults.h @@ -91,7 +91,7 @@ static const struct { { BU_CFG2, AMD_DRBH_Cx , AMD_PTYPE_ALL, 0x00000000, 1 << (35-32), - 0x00000000, 1 << (35-32) }, /* Erratum 343 (set to 0 after CAR, in post_cache_as_ram() ) */ + 0x00000000, 1 << (35-32) }, /* Erratum 343 (set to 0 after CAR, in post_cache_as_ram()/model_10xxx_init() ) */ }; diff --git a/src/cpu/amd/model_10xxx/model_10xxx_init.c b/src/cpu/amd/model_10xxx/model_10xxx_init.c index 6f61fc37fd..a0e1f6fdbe 100644 --- a/src/cpu/amd/model_10xxx/model_10xxx_init.c +++ b/src/cpu/amd/model_10xxx/model_10xxx_init.c @@ -113,9 +113,11 @@ static void model_10xxx_init(device_t dev) msr.hi &= ~(1 << (46 - 32)); wrmsr(NB_CFG_MSR, msr); - /* Clear ClLinesToNbDis */ msr = rdmsr(BU_CFG2_MSR); + /* Clear ClLinesToNbDis */ msr.lo &= ~(1 << 15); + /* Clear bit 35 as per Erratum 343 */ + msr.hi &= ~(1 << (35-32)); wrmsr(BU_CFG2_MSR, msr); /* Write protect SMM space with SMMLOCK. */ -- cgit v1.2.3