Latest revision as of 01:10, 30 January 2016

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:

https://chromium-review.googlesource.com/#/c/322435/

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

@@ Line 10: / Line 10: @@
 == 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:
+* https://chromium-review.googlesource.com/#/c/322435/
+=== 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
-   HOSTCC  util/ectool
+  [..]
-   HOSTCC  util/lbplay
+ $
-   HOSTCC  util/stm32mon
-    HOSTCC  util/ec_sb_firmware_update
+Build all boards:
-    HOSTCC  util/lbcc
-   In file included from include/common.h:11:0,
+  ls -1 board/ | grep -v OWNERS | grep -v host | \
-                 from chip/mec1322/registers.h:11,
+  while read n; do
-                 from board/chell/board.h:130,
+    echo "**************** $n"
-                 from include/config.h:2063:
+    CROSS_COMPILE=armv7-a-eabi- HOST_CROSS_COMPILE= make BOARD=$n -j
-   .../4.9.2/include/stdint.h:9:26: fatal error: stdint.h: No such file or directory
+  done
-   # include_next <stdint.h>
-                          ^
+=== Issues ===
-   compilation terminated.
-   [..]
+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

Chrome EC: Difference between revisions