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CAR simplifications, typos, readability improvements (trivial).

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- Use some more #defines instead of hard-coding values.

 - Merge multiple movl/orl or movl/andl lines into one where possible.

 - Add some TODOs in places which seem to have either an incorrect
   code or incorrect comment.

 - Fix typos: s/for/from/, s/BSC/BSP/, s/size/carsize/.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5890 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Uwe Hermann
2010-10-01 07:27:51 +00:00
parent 52000e1688
commit 66d1687b92
4 changed files with 35 additions and 41 deletions
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13
src/cpu/intel/car/cache_as_ram.inc
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@@ -110,7 +110,7 @@ NotHtProcessor:
/* Set the default memory type and enable fixed and variable MTRRs. */
movl $MTRRdefType_MSR, %ecx
xorl %edx, %edx
movl $0x00000c00, %eax /* Enable variable and fixed MTRRs. */
movl $(MTRRdefTypeEn | MTRRdefTypeFixEn), %eax
wrmsr
/* Clear all MTRRs. */
@@ -169,7 +169,7 @@ clear_fixed_var_mtrr_out:
.endm
/*
* size is the cache size in bytes we want to use for CAR.
* carsize is the cache size in bytes we want to use for CAR.
* windowoffset is the 32k-aligned window into CAR size.
*/
.macro simplemask carsize, windowoffset
@@ -221,8 +221,7 @@ clear_fixed_var_mtrr_out:
*/
movl $MTRRphysBase_MSR(1), %ecx
xorl %edx, %edx
movl $REAL_XIP_ROM_BASE, %eax
orl $MTRR_TYPE_WRBACK, %eax
movl $(REAL_XIP_ROM_BASE | MTRR_TYPE_WRBACK), %eax
wrmsr
movl $MTRRphysMask_MSR(1), %ecx
@@ -233,7 +232,7 @@ clear_fixed_var_mtrr_out:
/* Enable cache. */
movl %cr0, %eax
andl $0x9fffffff, %eax
andl $(~((1 << 30) | (1 << 29))), %eax
movl %eax, %cr0
/* Read the range with lodsl. */
@@ -303,7 +302,7 @@ lout:
pushl %eax /* BIST */
call main
/* We don't need CAR for now on. */
/* We don't need CAR from now on. */
/* Disable cache. */
movl %cr0, %eax
@@ -332,7 +331,7 @@ lout:
/* Enable cache. */
movl %cr0, %eax
andl $0x9fffffff, %eax
andl $(~((1 << 30) | (1 << 29))), %eax
movl %eax, %cr0
/* Clear boot_complete flag. */