ar71xx/all0258n: sysupgrade support
U-Boot on the ALL0258N needs offset, size and md5 for kernel and rootfs to be stored in the U-Boot environment. If the checksums don't match during boot, a failsafe-system is booted instead. This patch adds a board-specific sysupgrade hack for the all0258n which calculates and updates the checksums for the U-Boot environment. Signed-off-by: Daniel Golle <dgolle@allnet.de> SVN-Revision: 28700v19.07.3_mercusys_ac12_duma
Gabor Juhos
13 years ago
parent
f40557a692
commit
3a7b12a27d
@ -0,0 +1,161 @@
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# The U-Boot loader of the ALL0258N requires image sizes and checksums to be
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# provided in the U-Boot environment.
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# In case the check fails during boot, a failsafe-system is started to provide
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# a minimal web-interface for flashing a new firmware.
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CI_FLADDR=0x9f050000
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# make sure we got uboot-envtools and fw_env.config copied over to the ramfs
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platform_add_ramfs_ubootenv() {
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[ -e /usr/sbin/fw_printenv ] && install_bin /usr/sbin/fw_printenv /usr/sbin/fw_setenv
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[ -e /etc/fw_env.config ] && install_file /etc/fw_env.config
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}
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append sysupgrade_pre_upgrade platform_add_ramfs_ubootenv
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# determine size of the main firmware partition
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platform_get_firmware_size() {
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local dev size erasesize name
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while read dev size erasesize name; do
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name=${name#'"'}; name=${name%'"'}
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case "$name" in
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firmware)
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printf "%d" "0x$size"
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break
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;;
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esac
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done < /proc/mtd
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}
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# get the first 4 bytes (magic) of a given file starting at offset in hex format
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get_magic_long_at() {
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dd if="$1" skip=$(( $CI_BLKSZ / 4 * $2 )) bs=4 count=1 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"'
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}
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get_filesize() {
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wc -c "$1" | while read image_size _n ; do echo $image_size ; break; done
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}
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# scan through the update image pages until matching a magic
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platform_get_offset() {
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offsetcount=0
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magiclong="x"
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if [ -n "$3" ]; then
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offsetcount=$3
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fi
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while magiclong=$( get_magic_long_at "$1" "$offsetcount" ) && [ -n "$magiclong" ]; do
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case "$magiclong" in
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"2705"*)
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# U-Boot image magic
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if [ "$2" = "uImage" ]; then
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echo $offsetcount
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return
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fi
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;;
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"68737173"|"73717368")
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# SquashFS
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if [ "$2" = "rootfs" ]; then
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echo $offsetcount
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return
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fi
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;;
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"deadc0de"|"19852003")
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# JFFS2 empty page
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if [ "$2" = "rootfs-data" ]; then
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echo $offsetcount
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return
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fi
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;;
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esac
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offsetcount=$(( $offsetcount + 1 ))
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done
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}
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platform_check_image_all0258n() {
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local fw_printenv=/usr/sbin/fw_printenv
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[ ! -n "$fw_printenv" -o ! -x "$fw_printenv" ] && {
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echo "Please install uboot-envtools!"
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return 1
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}
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[ ! -r "/etc/fw_env.config" ] && {
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echo "/etc/fw_env.config is missing"
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return 1
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}
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local image_size=$( get_filesize "$1" )
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local firmware_size=$( platform_get_firmware_size )
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[ $image_size -ge $firmware_size ] &&
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{
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echo "upgrade image is too big (${image_size}b > ${firmware_size}b)"
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}
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local vmlinux_blockoffset=$( platform_get_offset "$1" uImage )
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[ -z $vmlinux_blockoffset ] && {
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echo "vmlinux-uImage not found"
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return 1
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}
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local rootfs_blockoffset=$( platform_get_offset "$1" rootfs "$vmlinux_blockoffset" )
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[ -z $rootfs_blockoffset ] && {
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echo "missing rootfs"
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return 1
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}
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local data_blockoffset=$( platform_get_offset "$1" rootfs-data "$rootfs_blockoffset" )
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[ -z $data_blockoffset ] && {
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echo "rootfs doesn't have JFFS2 end marker"
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return 1
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}
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return 0
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}
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platform_do_upgrade_all0258n() {
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local firmware_base_addr=$( printf "%d" "$CI_FLADDR" )
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local vmlinux_blockoffset=$( platform_get_offset "$1" uImage )
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if [ ! -n "$vmlinux_blockoffset" ]; then
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echo "can't determine uImage offset"
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return 1
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fi
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local rootfs_blockoffset=$( platform_get_offset "$1" rootfs $(( $vmlinux_blockoffset + 1 )) )
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local vmlinux_offset=$(( $vmlinux_blockoffset * $CI_BLKSZ ))
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local vmlinux_addr=$(( $firmware_base_addr + $vmlinux_offset ))
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local vmlinux_hexaddr=0x$( printf "%08x" "$vmlinux_addr" )
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if [ ! -n "$rootfs_blockoffset" ]; then
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echo "can't determine rootfs offset"
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return 1
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fi
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local rootfs_offset=$(( $rootfs_blockoffset * $CI_BLKSZ ))
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local rootfs_addr=$(( $firmware_base_addr + $rootfs_offset ))
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local rootfs_hexaddr=0x$( printf "%08x" "$rootfs_addr" )
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local vmlinux_blockcount=$(( $rootfs_blockoffset - $vmlinux_blockoffset ))
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local vmlinux_size=$(( $rootfs_offset - $vmlinux_offset ))
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local vmlinux_hexsize=0x$( printf "%08x" "$vmlinux_size" )
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local data_blockoffset=$( platform_get_offset "$1" rootfs-data $(( $rootfs_blockoffset + 1 )) )
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if [ ! -n "$data_blockoffset" ]; then
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echo "can't determine rootfs size"
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return 1
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fi
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local data_offset=$(( $data_blockoffset * $CI_BLKSZ ))
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local rootfs_blockcount=$(( $data_blockoffset - $rootfs_blockoffset ))
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local rootfs_size=$(( $data_offset - $rootfs_offset ))
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local rootfs_hexsize=0x$( printf "%08x" "$rootfs_size" )
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local rootfs_md5=$( dd if="$1" bs=$CI_BLKSZ skip=$rootfs_blockoffset count=$rootfs_blockcount 2>/dev/null | md5sum -); rootfs_md5="${rootfs_md5%% *}"
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local vmlinux_md5=$( dd if="$1" bs=$CI_BLKSZ skip=$vmlinux_blockoffset count=$vmlinux_blockcount 2>/dev/null | md5sum -); vmlinux_md5="${vmlinux_md5%% *}"
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# this needs a recent version of uboot-envtools!
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cat >/tmp/fw_env_upgrade <<EOF
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vmlinux_start_addr $vmlinux_hexaddr
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vmlinux_size $vmlinux_hexsize
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vmlinux_checksum $vmlinux_md5
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rootfs_start_addr $rootfs_hexaddr
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rootfs_size $rootfs_hexsize
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rootfs_checksum $rootfs_md5
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bootcmd bootm $vmlinux_hexaddr
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EOF
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fw_setenv -s /tmp/fw_env_upgrade || {
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echo "failed to update U-Boot environment"
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return 1
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}
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default_do_upgrade "$@"
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}
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