diff options
Diffstat (limited to 'src/cpu/amd/mtrr/amd_mtrr.c')
| -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. |