Change in ...coreboot[master]: arch/x86/boot: Call payload in protected mode

[Paul Menzel (Code Review)]

Paul Menzel has uploaded a new patch set (#15) to the change originally created by Patrick Rudolph. ( https://review.coreboot.org/c/coreboot/+/30118 )

Change subject: arch/x86/boot: Call payload in protected mode
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arch/x86/boot: Call payload in protected mode

On ARCH_RAMSTAGE_X86_64 call the payload in protected mode.
Add a helper function to call arbitraty code in protected mode,
similar to the real mode call handler.

Tested on qemu using SeaBios as payload.
Untested for anything else.
Doesn't affect existing x86_32 code.

Change-Id: I6552ac30f1b6205e08e16d251328e01ce3fbfd14
Signed-off-by: Patrick Rudolph 
---
M Documentation/arch/x86/index.md
M src/arch/x86/boot.c
M src/arch/x86/c_start.S
M src/include/program_loading.h
4 files changed, 196 insertions(+), 12 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/18/30118/15