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-rw-r--r--target/linux/ipq40xx/base-files/lib/upgrade/openmesh.sh110
-rw-r--r--target/linux/ipq40xx/base-files/lib/upgrade/platform.sh27
2 files changed, 137 insertions, 0 deletions
diff --git a/target/linux/ipq40xx/base-files/lib/upgrade/openmesh.sh b/target/linux/ipq40xx/base-files/lib/upgrade/openmesh.sh
new file mode 100644
index 0000000000..71ab247ead
--- /dev/null
+++ b/target/linux/ipq40xx/base-files/lib/upgrade/openmesh.sh
@@ -0,0 +1,110 @@
+# The U-Boot loader of the OpenMesh devices requires image sizes and
+# checksums to be provided in the U-Boot environment.
+# The OpenMesh devices come with 2 main partitions - while one is active
+# sysupgrade will flash the other. The boot order is changed to boot the
+# newly flashed partition. If the new partition can't be booted due to
+# upgrade failures the previously used partition is loaded.
+
+platform_do_upgrade_openmesh() {
+ local tar_file="$1"
+ local restore_backup
+ local primary_kernel_mtd
+
+ local setenv_script="/tmp/fw_env_upgrade"
+
+ local kernel_mtd="$(find_mtd_index $PART_NAME)"
+ local kernel_offset="$(cat /sys/class/mtd/mtd${kernel_mtd}/offset)"
+ local total_size="$(cat /sys/class/mtd/mtd${kernel_mtd}/size)"
+
+ # detect to which flash region the new image is written to.
+ #
+ # 1. check what is the mtd index for the first flash region on this
+ # device
+ # 2. check if the target partition ("inactive") has the mtd index of
+ # the first flash region
+ #
+ # - when it is: the new bootseq will be 1,2 and the first region is
+ # modified
+ # - when it isnt: bootseq will be 2,1 and the second region is
+ # modified
+ #
+ # The detection has to be done via the hardcoded mtd partition because
+ # the current boot might be done with the fallback region. Let us
+ # assume that the current bootseq is 1,2. The bootloader detected that
+ # the image in flash region 1 is corrupt and thus switches to flash
+ # region 2. The bootseq in the u-boot-env is now still the same and
+ # the sysupgrade code can now only rely on the actual mtd indexes and
+ # not the bootseq variable to detect the currently booted flash
+ # region/image.
+ #
+ # In the above example, an implementation which uses bootseq ("1,2") to
+ # detect the currently booted image would assume that region 1 is booted
+ # and then overwrite the variables for the wrong flash region (aka the
+ # one which isn't modified). This could result in a device which doesn't
+ # boot anymore to Linux until it was reflashed with ap51-flash.
+ local next_boot_part="1"
+ case "$(board_name)" in
+ openmesh,a42)
+ primary_kernel_mtd=8
+ ;;
+ *)
+ echo "failed to detect primary kernel mtd partition for board"
+ return 1
+ ;;
+ esac
+ [ "$kernel_mtd" = "$primary_kernel_mtd" ] || next_boot_part="2"
+
+ local board_dir=$(tar tf $tar_file | grep -m 1 '^sysupgrade-.*/$')
+ board_dir=${board_dir%/}
+
+ local kernel_length=$(tar xf $tar_file ${board_dir}/kernel -O | wc -c)
+ local rootfs_length=$(tar xf $tar_file ${board_dir}/root -O | wc -c)
+ # rootfs without EOF marker
+ rootfs_length=$((rootfs_length-4))
+
+ local kernel_md5=$(tar xf $tar_file ${board_dir}/kernel -O | md5sum); kernel_md5="${kernel_md5%% *}"
+ # md5 checksum of rootfs with EOF marker
+ local rootfs_md5=$(tar xf $tar_file ${board_dir}/root -O | dd bs=1 count=$rootfs_length | md5sum); rootfs_md5="${rootfs_md5%% *}"
+
+ #
+ # add tar support to get_image() to use default_do_upgrade() instead?
+ #
+
+ # take care of restoring a saved config
+ [ "$SAVE_CONFIG" -eq 1 ] && restore_backup="${MTD_CONFIG_ARGS} -j ${CONF_TAR}"
+
+ # write concatinated kernel + rootfs to flash
+ tar xf $tar_file ${board_dir}/kernel ${board_dir}/root -O | \
+ mtd $restore_backup write - $PART_NAME
+
+ # prepare new u-boot env
+ if [ "$next_boot_part" = "1" ]; then
+ echo "bootseq 1,2" > $setenv_script
+ else
+ echo "bootseq 2,1" > $setenv_script
+ fi
+
+ printf "kernel_size_%i 0x%08x\n" $next_boot_part $kernel_length >> $setenv_script
+ printf "vmlinux_start_addr 0x%08x\n" ${kernel_offset} >> $setenv_script
+ printf "vmlinux_size 0x%08x\n" ${kernel_length} >> $setenv_script
+ printf "vmlinux_checksum %s\n" ${kernel_md5} >> $setenv_script
+
+ printf "rootfs_size_%i 0x%08x\n" $next_boot_part $((total_size-kernel_length)) >> $setenv_script
+ printf "rootfs_start_addr 0x%08x\n" $((kernel_offset+kernel_length)) >> $setenv_script
+ printf "rootfs_size 0x%08x\n" ${rootfs_length} >> $setenv_script
+ printf "rootfs_checksum %s\n" ${rootfs_md5} >> $setenv_script
+
+ # store u-boot env changes
+ fw_setenv -s $setenv_script || {
+ echo "failed to update U-Boot environment"
+ return 1
+ }
+}
+
+# create /var/lock for the lock "fw_setenv.lock" of fw_setenv
+# the rest is copied using ipq806x's RAMFS_COPY_BIN and RAMFS_COPY_DATA
+platform_add_ramfs_ubootenv()
+{
+ mkdir -p $RAM_ROOT/var/lock
+}
+append sysupgrade_pre_upgrade platform_add_ramfs_ubootenv
diff --git a/target/linux/ipq40xx/base-files/lib/upgrade/platform.sh b/target/linux/ipq40xx/base-files/lib/upgrade/platform.sh
new file mode 100644
index 0000000000..defa04d880
--- /dev/null
+++ b/target/linux/ipq40xx/base-files/lib/upgrade/platform.sh
@@ -0,0 +1,27 @@
+PART_NAME=firmware
+REQUIRE_IMAGE_METADATA=1
+
+RAMFS_COPY_BIN='fw_printenv fw_setenv'
+RAMFS_COPY_DATA='/etc/fw_env.config /var/lock/fw_printenv.lock'
+
+platform_check_image() {
+ return 0;
+}
+
+platform_do_upgrade() {
+ case "$(board_name)" in
+ openmesh,a42)
+ PART_NAME="inactive"
+ platform_do_upgrade_openmesh "$ARGV"
+ ;;
+ *)
+ default_do_upgrade "$ARGV"
+ ;;
+ esac
+}
+
+blink_led() {
+ . /etc/diag.sh; set_state upgrade
+}
+
+append sysupgrade_pre_upgrade blink_led