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| author | Yinghai Lu <yinghailu@gmail.com> | 2005-12-14 20:16:49 +0000 |
|---|---|---|
| committer | Yinghai Lu <yinghailu@gmail.com> | 2005-12-14 20:16:49 +0000 |
| commit | 30576601f6d29a72d5057ac0051ebe3479abc03c (patch) | |
| tree | bc2a673d488c2993d619c1ab91ede0385617171f /src/cpu/amd/mtrr | |
| parent | 6f63c0297c3e3f31674dbbf193635921b5c20e15 (diff) | |
| download | coreboot-30576601f6d29a72d5057ac0051ebe3479abc03c.tar.xz | |
from issue 53: don't set TOM2 if 4G less mem installed, opt for init_ecc
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2144 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/cpu/amd/mtrr')
| -rw-r--r-- | src/cpu/amd/mtrr/amd_mtrr.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/cpu/amd/mtrr/amd_mtrr.c b/src/cpu/amd/mtrr/amd_mtrr.c index e57bb3bec7..b422f9f425 100644 --- a/src/cpu/amd/mtrr/amd_mtrr.c +++ b/src/cpu/amd/mtrr/amd_mtrr.c @@ -149,10 +149,12 @@ void amd_setup_mtrrs(void) msr.lo = state.mmio_basek << 10; wrmsr(TOP_MEM, msr); - /* Setup TOP_MEM2 */ - msr.hi = state.tomk >> 22; - msr.lo = state.tomk << 10; - wrmsr(TOP_MEM2, msr); + if(state.tomk>(4*1024*1024)) { + /* Setup TOP_MEM2 */ + msr.hi = state.tomk >> 22; + msr.lo = state.tomk << 10; + wrmsr(TOP_MEM2, msr); + } /* zero the IORR's before we enable to prevent * undefined side effects. |