Change in ...coreboot[master]: [WIP]arch/x86/postcar: Add x86_64 support

[Patrick Rudolph (Code Review)]

Patrick Rudolph has uploaded a new patch set (#5) to the change originally created by Patrick Rudolph. ( https://review.coreboot.org/c/coreboot/+/30500 )

Change subject: [WIP]arch/x86/postcar: Add x86_64 support
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[WIP]arch/x86/postcar: Add x86_64 support

* Add support for loading GDT on x86_64.
* Add x86_64 assembly code to do the same as the x86_32 code.
* Seperate x86_32 and x86_64 code.

Tested on qemu x86_32 and x86_64 using additional MTRRs.
Needs test on real hardware.

Change-Id: I1c190627f5f0ed6f82738cb99423892382899d7b
Signed-off-by: Patrick Rudolph 
---
M src/arch/x86/Makefile.inc
R src/arch/x86/exit_car_x86_32.S
A src/arch/x86/exit_car_x86_64.S
M src/arch/x86/gdt_init.S
4 files changed, 158 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/00/30500/5