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Diffstat (limited to 'src/cpu/x86/mtrr/earlymtrr.c')
-rw-r--r--src/cpu/x86/mtrr/earlymtrr.c46
1 files changed, 6 insertions, 40 deletions
diff --git a/src/cpu/x86/mtrr/earlymtrr.c b/src/cpu/x86/mtrr/earlymtrr.c
index 5c83554cb2..dcfcccd0f3 100644
--- a/src/cpu/x86/mtrr/earlymtrr.c
+++ b/src/cpu/x86/mtrr/earlymtrr.c
@@ -5,19 +5,6 @@
#include <cpu/amd/mtrr.h>
#include <cpu/x86/msr.h>
-#if 0
-static void disable_var_mtrr(unsigned reg)
-{
- /* The invalid bit is kept in the mask so we simply
- * clear the relevent mask register to disable a
- * range.
- */
- msr_t zero;
- zero.lo = zero.hi = 0;
- wrmsr(MTRRphysMask_MSR(reg), zero);
-}
-#endif
-
static void set_var_mtrr(
unsigned reg, unsigned base, unsigned size, unsigned type)
@@ -28,33 +15,13 @@ static void set_var_mtrr(
basem.lo = base | type;
basem.hi = 0;
wrmsr(MTRRphysBase_MSR(reg), basem);
- maskm.lo = ~(size - 1) | 0x800;
- maskm.hi = (1<<(CONFIG_CPU_ADDR_BITS-32))-1;
+ maskm.lo = ~(size - 1) | MTRRphysMaskValid;
+ maskm.hi = (1 << (CONFIG_CPU_ADDR_BITS - 32)) - 1;
wrmsr(MTRRphysMask_MSR(reg), maskm);
}
-#if 0
-static void set_var_mtrr_x(
- unsigned reg, uint32_t base_lo, uint32_t base_hi, uint32_t size_lo, uint32_t size_hi, unsigned type)
-
-{
- /* Bit Bit 32-35 of MTRRphysMask should be set to 1 */
- msr_t basem, maskm;
- basem.lo = (base_lo & 0xfffff000) | type;
- basem.hi = base_hi & ((1<<(CONFIG_CPU_ADDR_BITS-32))-1);
- wrmsr(MTRRphysBase_MSR(reg), basem);
- maskm.hi = (1<<(CONFIG_CPU_ADDR_BITS-32))-1;
- if(size_lo) {
- maskm.lo = ~(size_lo - 1) | 0x800;
- } else {
- maskm.lo = 0x800;
- maskm.hi &= ~(size_hi - 1);
- }
- wrmsr(MTRRphysMask_MSR(reg), maskm);
-}
-#endif
-
-static inline void cache_lbmem(int type)
+#if !defined(CONFIG_CACHE_AS_RAM) || (CONFIG_CACHE_AS_RAM == 0)
+static void cache_lbmem(int type)
{
/* Enable caching for 0 - 1MB using variable mtrr */
disable_cache();
@@ -62,7 +29,6 @@ static inline void cache_lbmem(int type)
enable_cache();
}
-#if !defined(CONFIG_CACHE_AS_RAM) || (CONFIG_CACHE_AS_RAM == 0)
/* the fixed and variable MTTRs are power-up with random values,
* clear them to MTRR_TYPE_UNCACHEABLE for safty.
*/
@@ -119,7 +85,6 @@ static inline void early_mtrr_init(void)
do_early_mtrr_init(mtrr_msrs);
enable_cache();
}
-#endif
static inline int early_mtrr_init_detected(void)
{
@@ -131,7 +96,8 @@ static inline int early_mtrr_init_detected(void)
* according to the documentation.
*/
msr = rdmsr(MTRRdefType_MSR);
- return msr.lo & 0x00000800;
+ return msr.lo & MTRRdefTypeEn;
}
+#endif
#endif /* EARLYMTRR_C */