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author | Arthur Heymans <arthur@aheymans.xyz> | 2018-12-20 11:23:56 +0100 |
---|---|---|
committer | Patrick Georgi <pgeorgi@google.com> | 2019-03-05 19:35:37 +0000 |
commit | 65200f0746d09ea3e53da248c7dabc4f19c80715 (patch) | |
tree | d73ce8b480ad09d69312e0d049aa2ae2f52c90f7 /src/mainboard/emulation/qemu-q35/romstage.c | |
parent | 9497fcb742cebafb8d47f4cc3f0da796b0490498 (diff) | |
download | coreboot-65200f0746d09ea3e53da248c7dabc4f19c80715.tar.xz |
mb/qemu-{i440fx,q35}: Use POSTCAR stage to load the ramstage
Qemu does not have a real CAR but postcar stage is still useful
for testing the stage.
The postcar stage is also mandatory for x86_64 to setup
pagetables for x86_64 ramstage.
Do not set up MTRRs, as qemu ignores them anyways.
Tested on qemu-i440fx and qemu-q35.
Change-Id: I6638534d99fde312e55b6a6be8c95e4cb25cca80
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/30499
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src/mainboard/emulation/qemu-q35/romstage.c')
-rw-r--r-- | src/mainboard/emulation/qemu-q35/romstage.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/src/mainboard/emulation/qemu-q35/romstage.c b/src/mainboard/emulation/qemu-q35/romstage.c index 2b8d9351c0..3e0870ffec 100644 --- a/src/mainboard/emulation/qemu-q35/romstage.c +++ b/src/mainboard/emulation/qemu-q35/romstage.c @@ -24,6 +24,7 @@ asmlinkage void car_stage_entry(void) { + struct postcar_frame pcf; i82801ix_early_init(); console_init(); @@ -31,5 +32,18 @@ asmlinkage void car_stage_entry(void) timestamp_add_now(TS_START_ROMSTAGE); - run_ramstage(); + /** + * The LZMA decoder needs about 4 KiB stack. + * Leave 1 KiB stack for general postcar code. + */ + if (postcar_frame_init(&pcf, 5 * KiB)) + die("Unable to initialize postcar frame.\n"); + + /** + * Run postcar to tear down CAR and load relocatable ramstage. + * There's no CAR on qemu, but for educational purposes and + * testing the postcar stage is used on qemu, too. + */ + + run_postcar_phase(&pcf); } |