diff options
Diffstat (limited to 'src/cpu/intel')
| -rw-r--r-- | src/cpu/intel/car/cache_as_ram_ht.inc | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/cpu/intel/car/cache_as_ram_ht.inc b/src/cpu/intel/car/cache_as_ram_ht.inc index 08f5b1138d..ed207db7b1 100644 --- a/src/cpu/intel/car/cache_as_ram_ht.inc +++ b/src/cpu/intel/car/cache_as_ram_ht.inc @@ -25,6 +25,9 @@ #define CPU_MAXPHYADDR 36 #define CPU_PHYSMASK_HI (1 << (CPU_MAXPHYADDR - 32) - 1) +/* Base address to cache all of Flash ROM, just below 4GB. */ +#define CACHE_ROM_BASE ((1<<22 - CONFIG_CACHE_ROM_SIZE>>10)<<10) + #define CACHE_AS_RAM_SIZE CONFIG_DCACHE_RAM_SIZE #define CACHE_AS_RAM_BASE CONFIG_DCACHE_RAM_BASE @@ -203,13 +206,13 @@ clear_mtrrs: movl $CPU_PHYSMASK_HI, %edx wrmsr - /* Enable caching and Speculative Reads for the last 4MB. */ + /* Enable caching and Speculative Reads for Flash ROM device. */ movl $MTRRphysBase_MSR(1), %ecx - movl $(0xffc00000 | MTRR_TYPE_WRPROT), %eax + movl $(CACHE_ROM_BASE | MTRR_TYPE_WRPROT), %eax xorl %edx, %edx wrmsr movl $MTRRphysMask_MSR(1), %ecx - movl $(~(4 * 1024 * 1024 - 1) | MTRRphysMaskValid), %eax + movl $(~(CONFIG_CACHE_ROM_SIZE - 1) | MTRRphysMaskValid), %eax movl $CPU_PHYSMASK_HI, %edx wrmsr |