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| author | Isaac Christensen <isaac.christensen@se-eng.com> | 2014-09-24 14:59:32 -0600 |
|---|---|---|
| committer | Isaac Christensen <isaac.christensen@se-eng.com> | 2014-09-25 23:24:03 +0200 |
| commit | 81f90c58d2eacf8ee2baf2334fd38bbfa0ef7274 (patch) | |
| tree | 17d76874340eb3dc6b2b8a2d4b6b236e4fc00666 /src/cpu/x86/mtrr/mtrr.c | |
| parent | d2f3aa91e0096b087214ee5fc368fa0091d6c52c (diff) | |
| download | coreboot-81f90c58d2eacf8ee2baf2334fd38bbfa0ef7274.tar.xz | |
x86/mtrr: Enable MTRR's before enabling caching
Fix up the following commit by enabling the MTRR's before enabling caching.
7756fe7 x86: Minimize work done with the caches disabled in mtrr functions.
Also fix two typos in comments.
Change-Id: If751b815f9dab781fc38c898cf692f0940c57695
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6969
Reviewed-by: Aaron Durbin <adurbin@google.com>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/cpu/x86/mtrr/mtrr.c')
| -rw-r--r-- | src/cpu/x86/mtrr/mtrr.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/cpu/x86/mtrr/mtrr.c b/src/cpu/x86/mtrr/mtrr.c index e0392f7978..69cd2d2eb1 100644 --- a/src/cpu/x86/mtrr/mtrr.c +++ b/src/cpu/x86/mtrr/mtrr.c @@ -51,8 +51,8 @@ #define OS_MTRRS 2 #define MTRRS (BIOS_MTRRS + OS_MTRRS) /* - * Static storage size for variable MTRRs. Its sized sufficiently large to - * handle different types of CPUs. Empiricially, 16 variable MTRRs has not + * Static storage size for variable MTRRs. It's sized sufficiently large to + * handle different types of CPUs. Empirically, 16 variable MTRRs has not * yet been observed. */ #define NUM_MTRR_STATIC_STORAGE 16 @@ -769,7 +769,7 @@ static void commit_var_mtrrs(const struct var_mtrr_solution *sol) { int i; - /* Write out the variable MTTRs. */ + /* Write out the variable MTRRs. */ disable_cache(); for (i = 0; i < sol->num_used; i++) { wrmsr(MTRRphysBase_MSR(i), sol->regs[i].base); @@ -778,6 +778,7 @@ static void commit_var_mtrrs(const struct var_mtrr_solution *sol) /* Clear the ones that are unused. */ for (; i < total_mtrrs; i++) clear_var_mtrr(i); + enable_var_mtrr(sol->mtrr_default_type); enable_cache(); } @@ -800,7 +801,6 @@ void x86_setup_var_mtrrs(unsigned int address_bits, unsigned int above4gb) } commit_var_mtrrs(sol); - enable_var_mtrr(sol->mtrr_default_type); } void x86_setup_mtrrs(void) |