diff options
| author | Josef Kellermann <seppk@arcor.de> | 2011-02-10 07:48:07 +0000 |
|---|---|---|
| committer | Patrick Georgi <patrick.georgi@coresystems.de> | 2011-02-10 07:48:07 +0000 |
| commit | 31e0deac0e8771a0c98d9463fd7caa101ffb3be1 (patch) | |
| tree | 531904b33bb1693ae01c14108e64e2249c475ac2 /src/cpu/amd/model_fxx | |
| parent | b0c94a1866debb262ff1343674de871f6b770f3f (diff) | |
Fix a potential system hang by handling AMD Model F Erratum 89
a bit later.
Signed-off-by: Josef Kellermann <seppk@arcor.de>
Acked-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6339 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/cpu/amd/model_fxx')
| -rw-r--r-- | src/cpu/amd/model_fxx/model_fxx_init.c | 38 |
1 files changed, 21 insertions, 17 deletions
diff --git a/src/cpu/amd/model_fxx/model_fxx_init.c b/src/cpu/amd/model_fxx/model_fxx_init.c index d351e1b676..ea00f47837 100644 --- a/src/cpu/amd/model_fxx/model_fxx_init.c +++ b/src/cpu/amd/model_fxx/model_fxx_init.c @@ -384,23 +384,6 @@ static inline void k8_errata(void) wrmsr_amd(DC_CFG_MSR, msr); } - /* I can't touch this msr on early buggy cpus */ - if (!is_cpu_pre_b3()) { - - /* Erratum 89 ... */ - msr = rdmsr(NB_CFG_MSR); - msr.lo |= 1 << 3; - - if (!is_cpu_pre_c0() && is_cpu_pre_d0()) { - /* D0 later don't need it */ - /* Erratum 86 Disable data masking on C0 and - * later processor revs. - * FIXME this is only needed if ECC is enabled. - */ - msr.hi |= 1 << (36 - 32); - } - wrmsr(NB_CFG_MSR, msr); - } /* Erratum 97 ... */ if (!is_cpu_pre_c0() && is_cpu_pre_d0()) { @@ -445,7 +428,28 @@ static inline void k8_errata(void) msr.hi |= 1; wrmsr_amd(CPU_ID_EXT_FEATURES_MSR, msr); } + +#if CONFIG_K8_REV_F_SUPPORT == 0 + /* I can't touch this msr on early buggy cpus */ + if (!is_cpu_pre_b3()) +#endif + { + /* Erratum 89 ... */ + msr = rdmsr(NB_CFG_MSR); + msr.lo |= 1 << 3; +#if CONFIG_K8_REV_F_SUPPORT == 0 + if (!is_cpu_pre_c0() && is_cpu_pre_d0()) { + /* D0 later don't need it */ + /* Erratum 86 Disable data masking on C0 and + * later processor revs. + * FIXME this is only needed if ECC is enabled. + */ + msr.hi |= 1 << (36 - 32); + } +#endif + wrmsr(NB_CFG_MSR, msr); + } /* Erratum 122 */ msr = rdmsr(HWCR_MSR); msr.lo |= 1 << 6; |