On Fri, Oct 2, 2020 at 8:40 AM Andy Pont <andy.p...@sdcsystems.com> wrote:
> Duncan wrote... > > You can enable CONFIG_HAVE_EC_BIN and define CONFIG_EC_BIN_PATH ( > https://review.coreboot.org/plugins/gitiles/coreboot/+/refs/heads/master/src/southbridge/intel/common/firmware/Kconfig#115) > to point to the EC binary and the build system will use ifdtool to inject > the binary at the EC region that is defined in the descriptor. ( > https://review.coreboot.org/plugins/gitiles/coreboot/+/refs/heads/master/src/southbridge/intel/common/firmware/Makefile.inc#64 > ) > > If you are creating a descriptor layout from scratch you will need to > define the EC region in FLREG8: (example from google/drallion mainboard, > which matches the layout in chromeos.fmd) > 00000000:00000fff fd > 00438000:01ffffff bios > 00101000:00433fff me > 00434000:00437fff pd > 00001000:00100fff ec > > I have the binary file for the original system BIOS for this platform and > so have manage to use ifdtool to extract the 4KB flash descriptor which I > am in the process of adding to the image with CONFIG_HAVE_IFD_BIN and > CONFIG_IFD_BIN_PATH. Does that save me having to worry about anything > other than defining the CONFIG_HAVE_EC_BIN and CONFIG_EC_BIN_PATH values? > > Yes that should hopefully make it straightforward. -duncan >
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