diff options
Diffstat (limited to 'src/cpu/intel')
| -rw-r--r-- | src/cpu/intel/model_2065x/cache_as_ram.inc | 64 |
1 files changed, 22 insertions, 42 deletions
diff --git a/src/cpu/intel/model_2065x/cache_as_ram.inc b/src/cpu/intel/model_2065x/cache_as_ram.inc index ec7335e50a..dce0e39dba 100644 --- a/src/cpu/intel/model_2065x/cache_as_ram.inc +++ b/src/cpu/intel/model_2065x/cache_as_ram.inc @@ -27,11 +27,6 @@ #define CACHE_AS_RAM_SIZE CONFIG_DCACHE_RAM_SIZE #define CACHE_AS_RAM_BASE CONFIG_DCACHE_RAM_BASE -/* Cache 4GB - MRC_SIZE_KB for MRC */ -#define CACHE_MRC_BYTES ((CONFIG_CACHE_MRC_SIZE_KB << 10) - 1) -#define CACHE_MRC_BASE (0xFFFFFFFF - CACHE_MRC_BYTES) -#define CACHE_MRC_MASK (~CACHE_MRC_BYTES) - #define CPU_PHYSMASK_HI (1 << (CONFIG_CPU_ADDR_BITS - 32) - 1) #define NoEvictMod_MSR 0x2e0 @@ -54,7 +49,14 @@ wait_for_sipi: jc wait_for_sipi post_code(0x21) - /* Zero out all fixed range and variable range MTRRs. */ + /* Clean-up MTRRdefType_MSR. */ + movl $MTRRdefType_MSR, %ecx + xorl %eax, %eax + xorl %edx, %edx + wrmsr + + post_code(0x22) + /* Zero out all fixed range MTRRs. */ movl $mtrr_table, %esi movl $((mtrr_table_end - mtrr_table) / 2), %edi xorl %eax, %eax @@ -67,12 +69,20 @@ clear_mtrrs: dec %edi jnz clear_mtrrs - post_code(0x22) - /* Configure the default memory type to uncacheable. */ - movl $MTRRdefType_MSR, %ecx + /* Zero out all variable range MTRRs. */ + movl $MTRRcap_MSR, %ecx rdmsr - andl $(~0x00000cff), %eax + andl $0xff, %eax + shl $1, %eax + movl %eax, %edi + movl $0x200, %ecx + xorl %eax, %eax + xorl %edx, %edx +clear_var_mtrrs: wrmsr + add $1, %ecx + dec %edi + jnz clear_var_mtrrs post_code(0x23) /* Set Cache-as-RAM base address. */ @@ -147,17 +157,6 @@ clear_mtrrs: wrmsr post_code(0x27) -#if CONFIG_CACHE_MRC_BIN - /* Enable caching for ram init code to run faster */ - movl $MTRRphysBase_MSR(2), %ecx - movl $(CACHE_MRC_BASE | MTRR_TYPE_WRPROT), %eax - xorl %edx, %edx - wrmsr - movl $MTRRphysMask_MSR(2), %ecx - movl $(CACHE_MRC_MASK | MTRRphysMaskValid), %eax - movl $CPU_PHYSMASK_HI, %edx - wrmsr -#endif post_code(0x28) /* Enable cache. */ @@ -165,9 +164,8 @@ clear_mtrrs: andl $(~(CR0_CacheDisable | CR0_NoWriteThrough)), %eax movl %eax, %cr0 - /* Set up the stack pointer below MRC variable space. */ - movl $(CACHE_AS_RAM_SIZE + CACHE_AS_RAM_BASE - \ - CONFIG_DCACHE_RAM_MRC_VAR_SIZE - 4 - 4096), %eax + /* Set up the stack pointer below the end of CAR. */ + movl $(CACHE_AS_RAM_SIZE + CACHE_AS_RAM_BASE - 4), %eax movl %eax, %esp /* Restore the BIST result. */ @@ -212,16 +210,6 @@ before_romstage: andl $~1, %eax wrmsr -#if CONFIG_CACHE_MRC_BIN - /* Clear MTRR that was used to cache MRC */ - xorl %eax, %eax - xorl %edx, %edx - movl $MTRRphysBase_MSR(2), %ecx - wrmsr - movl $MTRRphysMask_MSR(2), %ecx - wrmsr -#endif - post_code(0x33) /* Enable cache. */ @@ -321,18 +309,10 @@ __main: jmp .Lhlt mtrr_table: - .word 0x02FF - /* Fixed MTRRs */ .word 0x250, 0x258, 0x259 .word 0x268, 0x269, 0x26A .word 0x26B, 0x26C, 0x26D .word 0x26E, 0x26F - - /* Variable MTRRs */ - .word 0x200, 0x201, 0x202, 0x203 - .word 0x204, 0x205, 0x206, 0x207 - .word 0x208, 0x209, 0x20A, 0x20B - .word 0x20C, 0x20D, 0x20E, 0x20F mtrr_table_end: |