diff options
Diffstat (limited to 'src/include/cpu')
| -rw-r--r-- | src/include/cpu/x86/mtrr.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/include/cpu/x86/mtrr.h b/src/include/cpu/x86/mtrr.h index eb7d78d1c5..49ed462952 100644 --- a/src/include/cpu/x86/mtrr.h +++ b/src/include/cpu/x86/mtrr.h @@ -150,7 +150,7 @@ static inline unsigned int fls(unsigned int x) #define _ALIGN_DOWN_POW2(x) ((x) & ~_POW2_MASK(x)) /* Calculate `4GiB - x` (e.g. absolute address for offset from 4GiB) */ -#define _FROM_4G_TOP(x) (((1 << 20) - ((x) >> 12)) << 12) +#define _FROM_4G_TOP(x) ((0xffffffff - (x)) + 1) /* At the end of romstage, low RAM 0..CACHE_TM_RAMTOP may be set * as write-back cacheable to speed up ramstage decompression. |