Chrome EC
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Documentation is now handled by the same processes we use for code: Add something to the Documentation/ directory in the coreboot repo, and it will be rendered to https://doc.coreboot.org/. Contributions welcome!
Chrome EC
The Chrome EC is used in almost all Chrome OS devices, and an increasing number of accessories, like Google's Type C chargers. It is based on the Chromium EC code base.
Building the Chrome EC
Building in the ChromiumOS environment
Getting started building EC images quickly
Building outside of the ChromiumOS chroot
Build requirements
You will need:
- GNU Make 4.1 (older versions are having trouble with the Makefiles)
- an ARM cross compiler (I used coreboot's armv7-a-eabi- toolchain)
Patches required
Patching up the code:
Build instructions
Let's go:
$ sudo aptitude install libftdi-dev $ git clone https://chromium.googlesource.com/chromiumos/platform/vboot_reference $ cd vboot_reference $ make [..] $ cp build/futility/futility ~/bin $ cd .. $ git clone https://chromium.googlesource.com/chromiumos/platform/ec [..] $ cd ec $ CROSS_COMPILE=armv7-a-eabi- HOST_CROSS_COMPILE= make BOARD=chell [..] $
Build all boards:
ls -1 board/ | grep -v OWNERS | grep -v host | \ while read n; do echo "**************** $n" CROSS_COMPILE=armv7-a-eabi- HOST_CROSS_COMPILE= make BOARD=$n -j done
Issues
Targets not building
- cr50 (make issue with -C)
- glados,kunimitsu,wheatley: `memset' referenced in section `.text' of /tmp/cc3Dv6dh.ltrans2.ltrans.o: defined in discarded section `.text' of build/wheatley/RO/common/util.o (symbol from plugin)
- it8380dev: armv7-a-eabi-gcc: error: unrecognized argument in option '-march=v3m'
- Not real targets, but in board/: host, OWNERS