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authorKyösti Mälkki <kyosti.malkki@gmail.com>2016-11-08 12:13:15 +0200
committerKyösti Mälkki <kyosti.malkki@gmail.com>2016-11-11 18:52:09 +0100
commit39915bc290066174b8b933829b7d192b86bb8e6f (patch)
treefb283a5f20bfa68e470532f4823640278662de1f /src/cpu/intel/model_2065x
parenta4ffe9dda0eb50eb698fef303f426408338fa0ff (diff)
downloadcoreboot-39915bc290066174b8b933829b7d192b86bb8e6f.tar.xz
intel cache-as-ram: Unify stack setup
No need to have %ebx reserved here. Change-Id: I9fe9292ddc610079b876019a71c69af5b1bcf2a2 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/17357 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/cpu/intel/model_2065x')
-rw-r--r--src/cpu/intel/model_2065x/cache_as_ram.inc13
1 files changed, 4 insertions, 9 deletions
diff --git a/src/cpu/intel/model_2065x/cache_as_ram.inc b/src/cpu/intel/model_2065x/cache_as_ram.inc
index 29ff01a26a..93d690748f 100644
--- a/src/cpu/intel/model_2065x/cache_as_ram.inc
+++ b/src/cpu/intel/model_2065x/cache_as_ram.inc
@@ -156,8 +156,8 @@ clear_var_mtrrs:
andl $(~(CR0_CacheDisable | CR0_NoWriteThrough)), %eax
movl %eax, %cr0
- /* Set up the stack pointer below the end of CAR. */
- movl $(CACHE_AS_RAM_SIZE + CACHE_AS_RAM_BASE - 4), %eax
+ /* Setup the stack. */
+ movl $(CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE), %eax
movl %eax, %esp
/* Restore the BIST result. */
@@ -169,11 +169,10 @@ before_romstage:
post_code(0x29)
/* Call romstage.c main function. */
call romstage_main
-
/* Save return value from romstage_main. It contains the stack to use
* after cache-as-ram is torn down.
*/
- movl %eax, %ebx
+ movl %eax, %esp
post_code(0x30)
@@ -272,11 +271,7 @@ before_romstage:
__main:
post_code(POST_PREPARE_RAMSTAGE)
cld /* Clear direction flag. */
-
- /* Setup stack as indicated by return value from romstage_main(). */
- movl %ebx, %esp
- movl %esp, %ebp
- call copy_and_run
+ call romstage_after_car
.Lhlt:
post_code(POST_DEAD_CODE)