tree 7b4eed9d8f1c70b3340ccfb9b429da75df445313
parent 5e6c30bc421757a11ec6f7c1f730bf36c7de1b57
author Kangheui Won <khwon@chromium.org> 1601806326 +1100
committer Aaron Durbin <adurbin@chromium.org> 1604355449 +0000

soc/amd/picasso: add monotonic_timer

On Zork(picasso) platform we run verstage on the PSP. It has its own
timer, but the frequency is not matched with TSC.

To ease the work to merge timestamps from the PSP and TSC, add a layer
around tsc to have microsecond granularity for timestamp table. PSP
already records timestamp in microseconds.

BUG=b:159220781
BRANCH=zork
TEST=build, flash and boot, check timestamps are correct

Signed-off-by: Kangheui Won <khwon@chromium.org>
Change-Id: Ifced4a84071be8da547e252167ec21cd42f20ccc
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46058
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Eric Peers <epeers@google.com>
Reviewed-by: Rob Barnes <robbarnes@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>