This commit adds support for CBMEM in sysfs. Useful for systems without
access to /dev/mem e.g. Android.
Linux kernel driver: drivers/firmware/google/cbmem.c
Linux driver Kconfig: CONFIG_GOOGLE_CBMEM
BUG=b:391874512
TEST=(devmem) cbmem -l; cbmem -x; cbmem -r 434f4e53; cbmem -t;
cbmem -a 1200
TEST=modprobe cbmem; cbmem -l; cbmem -x; cbmem -r 434f4e53; cbmem -t;
cbmem -a 1200
Change-Id: I527889509ffc84203be42d0160e5363c60eafd02
Signed-off-by: Jakub Czapiga <czapiga@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86606
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>