soc/amd/common/block/cpu: Cache the uCode to avoid multiple SPI reads

We are currently reading the uCode for each CPU. This is unnecessary
since the uCode never changes.

BUG=b:177909625
TEST=Boot guybrush and see "microcode: being updated to patch id" for
each CPU. I no longer see CBFS access for each CPU. This drops device
initialization time by 32 ms.
Also boot Ezkinil and verify microcode was also updated.

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I98b9d4ce8290a1f08063176809e903e671663208
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55987
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>

0 files changed, 0 insertions, 0 deletions