diff options
| author | Kevin O'Connor <kevin@koconnor.net> | 2011-01-19 06:32:35 +0000 |
|---|---|---|
| committer | Stefan Reinauer <stepan@openbios.org> | 2011-01-19 06:32:35 +0000 |
| commit | 5bb9fd6e4dae32f86a07676228034d3828820037 (patch) | |
| tree | 9933b8327f3af0ce6814d5402ce798a3720d273e /src/cpu | |
| parent | 4adc9eb60047e7dc3a7921793c489fff4fe3fc57 (diff) | |
Now that the VIA code is run above 1Meg (like other boards), it should
cache that range instead of the first 1Meg. This reduces boot time by
about 1 second on epia-cn.
This patch also adds a MTRRphysMaskValid bit definition.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Acked-by: Stefan Reinauer <stepan@coreboot.org>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6272 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/cpu')
| -rw-r--r-- | src/cpu/via/car/cache_as_ram.inc | 43 | ||||
| -rw-r--r-- | src/cpu/x86/mtrr/mtrr.c | 4 |
2 files changed, 10 insertions, 37 deletions
diff --git a/src/cpu/via/car/cache_as_ram.inc b/src/cpu/via/car/cache_as_ram.inc index 1f0bed2032..c3c1cb7664 100644 --- a/src/cpu/via/car/cache_as_ram.inc +++ b/src/cpu/via/car/cache_as_ram.inc @@ -103,7 +103,7 @@ clear_fixed_var_mtrr_out: movl $MTRRphysMask_MSR(0), %ecx /* This assumes we never access addresses above 2^36 in CAR. */ movl $0x0000000f, %edx - movl $(~(CacheSize - 1) | 0x800), %eax + movl $(~(CacheSize - 1) | MTRRphysMaskValid), %eax wrmsr #if defined(CONFIG_TINY_BOOTBLOCK) && CONFIG_TINY_BOOTBLOCK @@ -129,7 +129,7 @@ clear_fixed_var_mtrr_out: movl $MTRRphysMask_MSR(1), %ecx movl $0x0000000f, %edx - movl $(~(CONFIG_XIP_ROM_SIZE - 1) | 0x800), %eax + movl $(~(CONFIG_XIP_ROM_SIZE - 1) | MTRRphysMaskValid), %eax wrmsr /* Set the default memory type and enable fixed and variable MTRRs. */ @@ -219,54 +219,27 @@ testok: movl $(MTRRdefTypeEn), %eax wrmsr - /* Enable caching for first 1M using variable MTRR. */ + /* Enable caching for CONFIG_RAMBASE..CONFIG_RAMTOP. */ movl $MTRRphysBase_MSR(0), %ecx xorl %edx, %edx - movl $(0 | MTRR_TYPE_WRBACK), %eax + movl $(CONFIG_RAMBASE | MTRR_TYPE_WRBACK), %eax wrmsr - /* - * Enable cache for 0-7ffff, 80000-9ffff, e0000-fffff; - * If 1M cacheable, then when S3 resume, there is stange color on - * screen for 2 sec. Suppose problem of a0000-dfffff and cache. - * And in x86_setup_fixed_mtrrs()(mtrr.c), 0-256M is set cacheable. - */ - movl $MTRRphysMask_MSR(0), %ecx movl $0x0000000f, %edx /* AMD 40 bit 0xff */ - movl $((~((0 + 0x80000) - 1)) | 0x800), %eax - wrmsr - - movl $MTRRphysBase_MSR(1), %ecx - xorl %edx, %edx - movl $(0x80000 | MTRR_TYPE_WRBACK), %eax - wrmsr - - movl $MTRRphysMask_MSR(1), %ecx - movl $0x0000000f, %edx /* AMD 40 bit 0xff */ - movl $((~((0 + 0x20000) - 1)) | 0x800), %eax - wrmsr - - movl $MTRRphysBase_MSR(2), %ecx - xorl %edx, %edx - movl $(0xc0000 | MTRR_TYPE_WRBACK), %eax - wrmsr - - movl $MTRRphysMask_MSR(2), %ecx - movl $0x0000000f, %edx /* AMD 40 bit 0xff */ - movl $((~(( 0 + 0x40000) - 1)) | 0x800), %eax + movl $(~(CONFIG_RAMTOP - CONFIG_RAMBASE - 1) | MTRRphysMaskValid), %eax wrmsr /* Cache XIP_ROM_BASE-SIZE to speedup coreboot code. */ - movl $MTRRphysBase_MSR(3), %ecx + movl $MTRRphysBase_MSR(1), %ecx xorl %edx, %edx movl $REAL_XIP_ROM_BASE, %eax orl $MTRR_TYPE_WRBACK, %eax wrmsr - movl $MTRRphysMask_MSR(3), %ecx + movl $MTRRphysMask_MSR(1), %ecx xorl %edx, %edx - movl $(~(CONFIG_XIP_ROM_SIZE - 1) | 0x800), %eax + movl $(~(CONFIG_XIP_ROM_SIZE - 1) | MTRRphysMaskValid), %eax wrmsr enable_cache() diff --git a/src/cpu/x86/mtrr/mtrr.c b/src/cpu/x86/mtrr/mtrr.c index 734734a77b..8e7beea76e 100644 --- a/src/cpu/x86/mtrr/mtrr.c +++ b/src/cpu/x86/mtrr/mtrr.c @@ -62,7 +62,7 @@ static void enable_var_mtrr(void) msr_t msr; msr = rdmsr(MTRRdefType_MSR); - msr.lo |= 0x800; + msr.lo |= MTRRdefTypeEn; wrmsr(MTRRdefType_MSR, msr); } @@ -115,7 +115,7 @@ static void set_var_mtrr( /* Bit 32-35 of MTRRphysMask should be set to 1 */ base.lo |= type; - mask.lo |= 0x800; + mask.lo |= MTRRphysMaskValid; wrmsr (MTRRphysBase_MSR(reg), base); wrmsr (MTRRphysMask_MSR(reg), mask); |