x86: Dont clobber %eax after getting memory size
By using another register, reduce code size by one instruction
diff --git a/arch/i386/cpu/start.S b/arch/i386/cpu/start.S
index 63f7334..66ff4f3 100644
--- a/arch/i386/cpu/start.S
+++ b/arch/i386/cpu/start.S
@@ -114,8 +114,8 @@
/* Test the stack */
pushl $0
- popl %eax
- cmpl $0, %eax
+ popl %ecx
+ cmpl $0, %ecx
jne die
push $0x55aa55aa
popl %ecx
@@ -125,7 +125,6 @@
wbinvd
/* Set the upper memory limit parameter */
- movl %esp, %eax
subl $CONFIG_SYS_STACK_SIZE, %eax
call board_init_f /* Enter, U-boot! */