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| author | Jason Schildt <jschildt@gmail.com> | 2005-08-09 21:53:07 +0000 |
|---|---|---|
| committer | Jason Schildt <jschildt@gmail.com> | 2005-08-09 21:53:07 +0000 |
| commit | 6e44b422b3b26a4ce5b98fca12d0f3ef7d7af110 (patch) | |
| tree | 4f94702f435949875bed8f725928cb571b7f40c8 /src/cpu/x86/mtrr | |
| parent | dc2454eb944c2ea9201bd650d7bc9942d4653a6c (diff) | |
| download | coreboot-6e44b422b3b26a4ce5b98fca12d0f3ef7d7af110.tar.xz | |
- Merge from linuxbios-lnxi (Linux Networx repository) up to public tree.
- Special version for HDAMA rev G with 33Mhz test and reboot out.
- Support for CPU rev E, dual core, memory hoisting,
- corrected an SST flashing problem. Kernel bug work around (NUMA)
- added a Kernel bug work around for assigning CPU's to memory.
r2@gog: svnadmin | 2005-08-03 08:47:54 -0600
Create local LNXI branch
r1110@gog: jschildt | 2005-08-09 10:35:51 -0600
- Merge from Tom Zimmerman's additions to the hdama code for dual core
and 33Mhz fix.
r1111@gog: jschildt | 2005-08-09 11:07:11 -0600
Stable Release tag for HDAMA-1.1.8.10 and HDAMA-1.1.8.10LANL
r1112@gog: jschildt | 2005-08-09 15:09:32 -0600
- temporarily removing hdama tag to update to public repository. Will
reset tag after update.
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2004 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/cpu/x86/mtrr')
| -rw-r--r-- | src/cpu/x86/mtrr/earlymtrr.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/cpu/x86/mtrr/earlymtrr.c b/src/cpu/x86/mtrr/earlymtrr.c index 105f7c49df..aea8e258d4 100644 --- a/src/cpu/x86/mtrr/earlymtrr.c +++ b/src/cpu/x86/mtrr/earlymtrr.c @@ -117,4 +117,17 @@ static void early_mtrr_init(void) enable_cache(); } +static int early_mtrr_init_detected(void) +{ + msr_t msr; + /* See if MTRR's are enabled. + * a #RESET disables them while an #INIT + * preserves their state. This works + * on both Intel and AMD cpus, at least + * according to the documentation. + */ + msr = rdmsr(MTRRdefType_MSR); + return msr.lo & 0x00000800; +} + #endif /* EARLYMTRR_C */ |