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| author | Aaron Durbin <adurbin@chromium.org> | 2016-11-19 10:06:00 -0600 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2016-11-21 16:45:10 +0100 |
| commit | ebbd12f8bcfb1f21db7991c5272515fb76600b66 (patch) | |
| tree | b394ffc4d0cc2ea155853ab1f595c53427dd95a8 | |
| parent | 4c002ac7291f3a25410891445df2263ea5ef3e4a (diff) | |
| download | coreboot-ebbd12f8bcfb1f21db7991c5272515fb76600b66.tar.xz | |
arch/x86: don't create new gdt in cbmem for relocatable ramstage
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.
Change-Id: I2750d30119fee01baf4748d8001a672d18a13fb0
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/17504
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
| -rw-r--r-- | src/arch/x86/gdt.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/arch/x86/gdt.c b/src/arch/x86/gdt.c index 982b8ae9d2..f662edda3a 100644 --- a/src/arch/x86/gdt.c +++ b/src/arch/x86/gdt.c @@ -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)); |