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soc/amd/common/psp_verstage: Save transfer buffer during S0i3 resume 

We need to save the transfer buffer so we can transfer the cbmem
console and timestamps into x86 DRAM.

BUG=b:221231786
TEST=Boot guybrush and verify S0i3 resume works. Also dumped the
transfer buffer from the OS and verified the console contents got
transferred.

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I1d3b34c90e0e18609b0c6a0cdedab35aeefbd84b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62347
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
This commit is contained in:
Raul E Rangel 2022-02-24 11:54:32 -07:00 committed by Felix Held
parent 89d6764fd5
commit 409e5cb0f6
1 changed files with 5 additions and 0 deletions
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5
src/soc/amd/common/psp_verstage/psp_verstage.c
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@ -252,6 +252,11 @@ void Main(void)
if (bootmode == PSP_BOOT_MODE_S0i3_RESUME) { if (bootmode == PSP_BOOT_MODE_S0i3_RESUME) {
psp_verstage_s0i3_resume(); psp_verstage_s0i3_resume();
post_code(POSTCODE_SAVE_BUFFERS);
retval = save_buffers();
if (retval)
post_code(retval);
post_code(POSTCODE_UNMAP_FCH_DEVICES); post_code(POSTCODE_UNMAP_FCH_DEVICES);
unmap_fch_devices(); unmap_fch_devices();