[coreboot-gerrit] [S] Change in coreboot[main]: arch/x86/c_start.S: Add proper x86_64 code

[Benjamin Doron (Code Review)]

Attention is currently required from: Angel Pons, Felix Singer, Jérémy Compostella, Martin L Roth, Patrick Rudolph, Paul Menzel, Tim Wawrzynczak.

Benjamin Doron has uploaded a new patch set (#6) to the change originally created by Patrick Rudolph. ( https://review.coreboot.org/c/coreboot/+/59874?usp=email )

The following approvals got outdated and were removed:
Code-Review+2 by Martin L Roth, Verified+1 by build bot (Jenkins)

Change subject: arch/x86/c_start.S: Add proper x86_64 code
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arch/x86/c_start.S: Add proper x86_64 code

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

Tested on qemu with cbmem_top set to TOUUD.

Change-Id: Ifc9b45f69d0b7534b2faacaad0d099cef2667478
Signed-off-by: Patrick Rudolph 
Co-authored-by: Benjamin Doron 
---
M src/arch/x86/c_start.S
1 file changed, 24 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/74/59874/6