kirkwood: support sysupgrade on Linksys EA[34]500

This automatically writes to the alternate firmware partition
(on Linksys's dual firmware layout) using code borrowed from
the WRT1900AC port.

Signed-off-by: Claudio Leite <leitec@staticky.com>
SVN-Revision: 47434

diff --git a/target/linux/kirkwood/base-files/lib/upgrade/linksys.sh b/target/linux/kirkwood/base-files/lib/upgrade/linksys.sh
new file mode 100644 (file)
index 0000000..13a8f1c
--- /dev/null
+++ b/target/linux/kirkwood/base-files/lib/upgrade/linksys.sh
@@ -0,0 +1,79 @@
+#
+# Copyright (C) 2014 OpenWrt.org
+#
+
+linksys_get_target_firmware() {
+       cur_boot_part=`/usr/sbin/fw_printenv -n boot_part`
+       target_firmware=""
+       if [ "$cur_boot_part" = "1" ]
+       then
+               # current primary boot - update alt boot
+               target_firmware="kernel2"
+               fw_setenv boot_part 2
+               fw_setenv bootcmd "run altnandboot"
+       elif [ "$cur_boot_part" = "2" ]
+       then
+               # current alt boot - update primary boot
+               target_firmware="kernel1"
+               fw_setenv boot_part 1
+               fw_setenv bootcmd "run nandboot"
+       fi
+
+       echo "$target_firmware"
+}
+
+linksys_get_root_magic() {
+       (get_image "$@" | dd skip=786432 bs=4 count=1 | hexdump -v -n 4 -e '1/1 "%02x"') 2>/dev/null
+}
+
+platform_do_upgrade_linksys() {
+       local magic_long="$(get_magic_long "$1")"
+
+       mkdir -p /var/lock
+       local part_label="$(linksys_get_target_firmware)"
+       touch /var/lock/fw_printenv.lock
+
+       if [ ! -n "$part_label" ]
+       then
+               echo "cannot find target partition"
+               exit 1
+       fi
+
+       local target_mtd=$(find_mtd_part $part_label)
+
+       [ "$magic_long" = "73797375" ] && {
+               CI_KERNPART="$part_label"
+               if [ "$part_label" = "kernel1" ]
+               then
+                       CI_UBIPART="rootfs1"
+               else
+                       CI_UBIPART="rootfs2"
+               fi
+
+               nand_upgrade_tar "$1"
+       }
+       [ "$magic_long" = "27051956" ] && {
+               # check firmwares' rootfs types
+               local target_mtd=$(find_mtd_part $part_label)
+               local oldroot="$(linksys_get_root_magic $target_mtd)"
+               local newroot="$(linksys_get_root_magic "$1")"
+
+               if [ "$newroot" = "55424923" -a "$oldroot" = "55424923" ]
+               # we're upgrading from a firmware with UBI to one with UBI
+               then
+                       # erase everything to be safe
+                       mtd erase $part_label
+                       get_image "$1" | mtd -n write - $part_label
+               else
+                       get_image "$1" | mtd write - $part_label
+               fi
+       }
+}
+
+linksys_preupgrade() {
+       export RAMFS_COPY_BIN="${RAMFS_COPY_BIN} /usr/sbin/fw_printenv /usr/sbin/fw_setenv"
+       export RAMFS_COPY_BIN="${RAMFS_COPY_BIN} /bin/mkdir /bin/touch"
+       export RAMFS_COPY_DATA="${RAMFS_COPY_DATA} /etc/fw_env.config /var/lock/fw_printenv.lock"
+}
+
+append sysupgrade_pre_upgrade linksys_preupgrade

diff --git a/target/linux/kirkwood/base-files/lib/upgrade/platform.sh b/target/linux/kirkwood/base-files/lib/upgrade/platform.sh
new file mode 100644 (file)
index 0000000..c33229a
--- /dev/null
+++ b/target/linux/kirkwood/base-files/lib/upgrade/platform.sh
@@ -0,0 +1,32 @@
+. /lib/kirkwood.sh
+
+platform_check_image() {
+       [ "$#" -gt 1 ] && return 1
+       local board="$(kirkwood_board_name)"
+       local magic="$(get_magic_long "$1")"
+
+       case "$board" in
+       "linksys-audi"|\
+       "linksys-viper")
+               [ "$magic" != "27051956" -a "$magic" != "73797375" ] && {
+                       echo "Invalid image type."
+                       return 1
+               }
+               return 0
+               ;;
+       esac
+
+       echo "Sysupgrade is not yet supported on $board."
+       return 1
+}
+
+platform_do_upgrade() {
+       local board="$(kirkwood_board_name)"
+
+       case "$board" in
+       "linksys-audi"|\
+       "linksys-viper")
+               platform_do_upgrade_linksys "$ARGV"
+               ;;
+       esac
+}