diff options
Diffstat (limited to 'src/include/cpu/x86/mtrr.h')
| -rw-r--r-- | src/include/cpu/x86/mtrr.h | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/src/include/cpu/x86/mtrr.h b/src/include/cpu/x86/mtrr.h index 4eb4f135c3..f33a4ace4c 100644 --- a/src/include/cpu/x86/mtrr.h +++ b/src/include/cpu/x86/mtrr.h @@ -91,9 +91,11 @@ int get_free_var_mtrr(void); (x>>6)|(x>>7)|(x>>8)|((1<<18)-1)) #define _ALIGN_UP_POW2(x) ((x + _POW2_MASK(x)) & ~_POW2_MASK(x)) -#if !defined(CONFIG_RAMTOP) || !CONFIG_RAMTOP -# error "CONFIG_RAMTOP not configured" -#endif +/* At the end of romstage, low ram 0..CACHE_TM_RAMTOP may be set + * as write-back cacheable to speed up ramstage decompression. + * Note MTRR boundaries, must be power of two. + */ +#define CACHE_TMP_RAMTOP (16<<20) #if ((CONFIG_XIP_ROM_SIZE & (CONFIG_XIP_ROM_SIZE -1)) != 0) # error "CONFIG_XIP_ROM_SIZE is not a power of 2" @@ -122,8 +124,4 @@ int get_free_var_mtrr(void); #define CACHE_ROM_BASE (((1<<20) - (CACHE_ROM_SIZE>>12))<<12) -#if (CONFIG_RAMTOP & (CONFIG_RAMTOP - 1)) != 0 -# error "CONFIG_RAMTOP must be a power of 2" -#endif - #endif /* CPU_X86_MTRR_H */ |