diff options
| author | Eric Biederman <ebiederm@xmission.com> | 2004-10-21 02:53:25 +0000 |
|---|---|---|
| committer | Eric Biederman <ebiederm@xmission.com> | 2004-10-21 02:53:25 +0000 |
| commit | f3aa4707d3bef9f529a70a204dbc648968cf7c20 (patch) | |
| tree | 821cae3c43eace6e1e03f784140e17cf63693924 /src/cpu/amd/mtrr/amd_mtrr.c | |
| parent | 29490a17ced79768a337642f36066c5c07922966 (diff) | |
- Explicitly disable the fixed dram extensions bits.
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1697 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/cpu/amd/mtrr/amd_mtrr.c')
| -rw-r--r-- | src/cpu/amd/mtrr/amd_mtrr.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/cpu/amd/mtrr/amd_mtrr.c b/src/cpu/amd/mtrr/amd_mtrr.c index 7c8d50ae68..ab6bc2bbee 100644 --- a/src/cpu/amd/mtrr/amd_mtrr.c +++ b/src/cpu/amd/mtrr/amd_mtrr.c @@ -24,6 +24,11 @@ void amd_setup_mtrrs(void) device_t dev; msr_t msr; + /* Disable the access to AMD RdDram and WrDram extension bits */ + msr = rdmsr(SYSCFG_MSR); + msr.lo &= ~SYSCFG_MSR_MtrrFixDramModEn; + wrmsr(SYSCFG_MSR, msr); + x86_setup_mtrrs(); /* Except for the PCI MMIO hole just before 4GB there are no |