Change in coreboot[master]: src/arch/x86/c_start.S: Add proper x86_64 code

[Patrick Rudolph (Code Review)]

Attention is currently required from: Patrick Rudolph.
Hello build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/59874

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

Change subject: src/arch/x86/c_start.S: Add proper x86_64 code
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src/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 
---
M src/arch/x86/c_start.S
1 file changed, 35 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/74/59874/2