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Move ARM factory install shim to initramfs

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As USB/SD install shim might be used for ARM devices now, it is
reasonable to move ARM factory install shim to initramfs like on x86.
This converges the code path and build process for ARM and x86.

BUG=chrome-os-partner:15884
TEST=Install with install shim and netboot on Spring.

Change-Id: Ic8d7328502181ca909be3d7542be34f2a904523f
Signed-off-by: Vic Yang <victoryang@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/40931
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
This commit is contained in:
Vic Yang 2013-01-09 18:34:35 +08:00 committed by ChromeBot
parent 5d75098098
commit 90e3b25914
2 changed files with 29 additions and 39 deletions
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14
build_image
View File

@ -125,17 +125,11 @@ if should_build_image ${CHROMEOS_FACTORY_INSTALL_SHIM_NAME}; then
BASE_PACKAGE="chromeos-base/chromeos-installshim"
# On x86/amd64, we boot the factory install shim from an SD card using
# initramfs for our root. On ARM, we boot the factory install shim over the
# network, so we don't require initramfs, but we do require fbconsole to fix
# a display driver bug.
if [ "${ARCH}" = "x86" -o "${ARCH}" = "amd64" ] ; then
export USE="${USE} initramfs vfat"
fi
# CONFIG_BLK_DEV_RAM is disabled by default.
# But tftp install needs it to mount rootfs in ram
export USE="${USE} initramfs vfat"
# On ARM, fbconsole is required to fix a display driver bug.
if [ "${ARCH}" = "arm" ] ; then
export USE="${USE} fbconsole blkdevram"
export USE="${USE} fbconsole"
fi
fi

54
make_netboot.sh
View File

@ -94,44 +94,40 @@ else
fi
# Get netboot kernel.
echo "Building kernel"
# Create temporary emerge root
temp_build_path="$(mktemp -d bk_XXXXXXXX)"
if ! [ -d "${temp_build_path}" ]; then
echo "Failed to create temporary directory."
exit 1
fi
# Emerge network boot kernel
# We don't want to build whole install shim everytime we run this script,
# and thus we only build kernel here. If this script is run against install
# shim with different kernel version, this might not work. But as we don't
# upgrade kernel so often, this is probably fine.
export USE='vfat blkdevram fbconsole'
export EMERGE_BOARD_CMD="emerge-${FLAGS_board}"
emerge_custom_kernel ${temp_build_path}
# Generate kernel uImage
echo "Generating netboot kernel vmlinux.uimg"
if [ "${ARCH}" = "arm" ]; then
# Currently we don't use initramfs for ARM. Someday we would probably want
# initramfs for USB factory installation.
# TODO: Converge build processes of ARM and x86.
echo "Generating netboot kernel vmlinux.uimg"
cp "r/boot/vmlinux.uimg" "netboot"
cp "${temp_build_path}"/boot/vmlinux.uimg netboot/
else
echo "Building kernel"
# Create temporary emerge root
temp_build_path="$(mktemp -d bk_XXXXXXXX)"
if ! [ -d "${temp_build_path}" ]; then
echo "Failed to create temporary directory."
exit 1
fi
# Emerge network boot kernel
# We don't want to build whole install shim everytime we run this script,
# and thus we only build kernel here. If this script is run against install
# shim with different kernel version, this might not work. But as we don't
# upgrade kernel so often, this is probably fine.
export USE='vfat blkdevram fbconsole'
export EMERGE_BOARD_CMD="emerge-${FLAGS_board}"
emerge_custom_kernel ${temp_build_path}
# Generate kernel uImage
echo "Generating netboot kernel vmlinux.uimg"
# U-boot put kernel image at 0x100000. We load it at 0x3000000 because
# 0x3000000 is safe enough not to overlap with image at 0x100000.
mkimage -A "${MKIMAGE_ARCH}" -O linux -T kernel -n "Linux kernel" -C none \
-d "${temp_build_path}"/boot/vmlinuz \
-a 0x03000000 -e 0x03000000 netboot/vmlinux.uimg
# Clean up temporary emerge root
sudo rm -rf "${temp_build_path}"
fi
# Clean up temporary emerge root
sudo rm -rf "${temp_build_path}"
echo "Add lsb-factory"
# Copy factory config file.
# TODO(nsanders): switch this to u-boot env var config.