Emulation/switch-coreboot
1
0
Fork 0
mirror of https://github.com/fail0verflow/switch-coreboot.git synced 2025-05-04 01:39:18 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

UPSTREAM: arch/x86: don't create new gdt in cbmem for relocatable ramstage

Browse source 
When running with relocatable ramstage, the gdt loaded from c_start.S
is already in CBMEM (high memory). Thus, there's no need to create
a new copy of the gdt and reload.

BUG=None
BRANCH=None
TEST=None

Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/17504
Tested-by: build bot (Jenkins)
Reviewed-by: Kysti Mlkki <kyosti.malkki@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

Change-Id: I2750d30119fee01baf4748d8001a672d18a13fb0
Reviewed-on: https://chromium-review.googlesource.com/414550
Commit-Ready: Furquan Shaikh <furquan@chromium.org>
Tested-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Aaron Durbin 2016-11-19 10:06:00 -06:00 • committed by chrome-bot
parent 1030a78af3
commit ceda5797a6
1 changed files with 4 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
src/arch/x86/gdt.c
View file

@ -38,6 +38,10 @@ static void move_gdt(int is_recovery)
u16 num_gdt_bytes = (uintptr_t)&gdt_end - (uintptr_t)&gdt;
struct gdtarg gdtarg;
/* ramstage is already in high memory. No need to use a new gdt. */
if (IS_ENABLED(CONFIG_RELOCATABLE_RAMSTAGE))
return;
newgdt = cbmem_find(CBMEM_ID_GDT);
if (!newgdt) {
newgdt = cbmem_add(CBMEM_ID_GDT, ALIGN(num_gdt_bytes, 512));