Create a valid stack pointer after leaving CAR, so function calls don't
reset the machine in the small window between CAR and coreboot_ram.
Signed-off-by: Patrick Georgi <email@example.com>
Acked-by: Myles Watson <firstname.lastname@example.org>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4218 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
diff --git a/src/cpu/via/car/cache_as_ram_post.c b/src/cpu/via/car/cache_as_ram_post.c
index 99e0dd8..9058727 100644
@@ -99,8 +99,11 @@
"movl %eax, %cr0\n\t"
- FIXME: I hope we don't need to change esp and ebp value here, so we can restore value from mmx sse back
- But the problem is the range is some io related, So don't go back
+ /* FIXME: These values might have to change for suspend-to-ram.
+ the 0x00400000 was chosen as this is a place in memory that
+ should exist in all contemporary configurations (ie. large
+ enough RAM), but doesn't collide with anything coreboot does.
+ Other than that, it's arbitrary. */
+ "movl $0x00400000,%esp\n\t"
+ "movl %esp,%ebp\n\t"