[XS] Change in coreboot[main]: src/arch/x86/exit_car: Add proper x86_64 code

[Benjamin Doron (Code Review)]

Attention is currently required from: Jérémy Compostella.

Hello Jérémy Compostella, Patrick Rudolph,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/79162?usp=email

to look at the new patch set (#2).

Change subject: src/arch/x86/exit_car: Add proper x86_64 code
......................................................................

src/arch/x86/exit_car: Add proper x86_64 code

Don't truncate upper bits in assembly code and thus allow loading
of postcar stage above 4GiB.

Tested on qemu with cbmem_top set to TOUUD.

Change-Id: I42d1086f1220e44076ccf613244fc3c6d804805b
Signed-off-by: Patrick Rudolph 
Signed-off-by: Benjamin Doron 
---
M src/arch/x86/exit_car.S
1 file changed, 6 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/62/79162/2