cros-build: add support for rammus

This includes a new environment file and build script for rammus to
generate the firmware-rammus-11275.B-collabora Depthcharge branch.

It also updates docker-compose.yaml to include a board-specific
setup directory in the environment.
Signed-off-by: Ricardo Cañuelo <ricardo.canuelo@collabora.com>

cros-build/docker-compose.yaml

@@ -14,3 +14,4 @@ services:
       - ./cache:/home/cros-build/cache
       - ./chroot-${CROS_DEVICE}:/home/cros-build/chroot-${CROS_DEVICE}
       - ./firmware:/home/cros-build/chromiumos/src/scripts/firmware
+      - ./setup/${CROS_DEVICE}_files:/home/cros-build/chromiumos/src/scripts/${CROS_DEVICE}_files

cros-build/firmware/.gitattributes

+image-rammus-R72-11275.110.0.serial-collabora-20201104.bin filter=lfs diff=lfs merge=lfs -text

cros-build/firmware/rammus.bin

+image-rammus-R72-11275.110.0.serial-collabora-20201104.bin
\ No newline at end of file

cros-build/setup/rammus.env

+CROS_DEVICE=rammus
+CROS_SDK_BRANCH=firmware-rammus-11275.B

cros-build/setup/rammus.sh

+#!/bin/bash
+
+set -e
+
+export ACCEPT_LICENSE=Google-TOS
+export BOARD=rammus
+
+cmd_setup() {
+    ./setup_board --board=$BOARD
+}
+
+cmd_checkout() {
+    echo "board: ${BOARD}"
+    cros_workon --board ${BOARD} start depthcharge
+    cd ../platform/depthcharge
+    git fetch \
+        https://gitlab.collabora.com/chromium/depthcharge.git \
+        firmware-rammus-11275.B-collabora
+    git checkout FETCH_HEAD
+    cd -
+}
+
+cmd_build() {
+    patch -d/ --forward -p0 < rammus_files/0001-depthcharge-999.ebuild.patch
+    emerge-${BOARD} depthcharge
+}
+
+cmd_image() {
+    local output=firmware/${BOARD}-new.bin
+
+    cp firmware/${BOARD}.bin ${output}
+    cbfstool \
+        ${output} \
+        remove \
+        -n fallback/payload \
+        -r COREBOOT
+    cbfstool \
+        ${output} \
+        add-payload \
+        -r COREBOOT \
+        -n fallback/payload \
+        -f /build/rammus/firmware/depthcharge/dev.elf
+
+    ls -l ${output}
+}
+
+cmd_$1
+
+exit 0

cros-build/setup/rammus_files/0001-depthcharge-999.ebuild.patch

+--- /mnt/host/source/src/third_party/chromiumos-overlay/sys-boot/depthcharge/depthcharge-9999.ebuild	2020-11-04 13:23:56.014885200 +0000
++++ /mnt/host/source/src/third_party/chromiumos-overlay/sys-boot/depthcharge/depthcharge-9999.ebuild	2020-11-04 13:27:39.409579789 +0000
+@@ -126,12 +126,7 @@
+ 	fi
+ 
+ 	if use unibuild; then
+-		local build_target
+-
+-		for build_target in $(cros_config_host \
+-			get-firmware-build-targets depthcharge); do
+-			make_depthcharge "${build_target}" "${build_target}"
+-		done
++		make_depthcharge "rammus" "rammus"
+ 	else
+ 		make_depthcharge "$(get_board)" build
+ 	fi
+@@ -170,10 +165,7 @@
+ 	local build_target
+ 
+ 	if use unibuild; then
+-		for build_target in $(cros_config_host \
+-			get-firmware-build-targets depthcharge); do
+-			do_install "${build_target}" "${build_target}"
+-		done
++		do_install "rammus" "rammus"
+ 	else
+ 		do_install "$(get_board)" build
+ 	fi