Move the complexity from main to function, so the main flow is easy to understand. TEST=Identical test on all AMD SOC platform Change-Id: Ia549a0d08c2a60b8858440543ac8d8b5259017dd Signed-off-by: Zheng Bao <fishbaozi@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/81334 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Held <felix-coreboot@felixheld.de>