bcm53xx: sysupgrade support for devices with serial flash

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
SVN-Revision: 43719

diff --git a/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh b/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh
new file mode 100644 (file)
index 0000000..de8d883
--- /dev/null
+++ b/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh
@@ -0,0 +1,118 @@
+PART_NAME=firmware
+
+# $(1): file to read magic from
+# $(2): offset in bytes
+get_magic_long_at() {
+       dd if="$1" skip=$2 bs=1 count=4 2>/dev/null | hexdump -v -e '1/1 "%02x"'
+}
+
+platform_flash_type() {
+       # On NAND devices "rootfs" is UBI volume, so won't be find in /proc/mtd
+       grep -q "\"rootfs\"" /proc/mtd && {
+               echo "serial"
+               return
+       }
+
+       echo "nand"
+}
+
+platform_identify() {
+       local magic
+
+       magic=$(get_magic_long "$1")
+       case "$magic" in
+               "48445230")
+                       echo "trx"
+                       return
+                       ;;
+               "2a23245e")
+                       echo "chk"
+                       return
+                       ;;
+       esac
+
+       magic=$(get_magic_long_at "$1" 14)
+       [ "$magic" = "55324e44" ] && {
+               echo "cybertan"
+               return
+       }
+
+       echo "unknown"
+}
+
+platform_check_image() {
+       [ "$#" -gt 1 ] && return 1
+
+       [ "$(platform_flash_type)" = "nand" ] && {
+               echo "Firmware upgrade on NAND devices is not implemented."
+               return 1
+       }
+
+       local file_type=$(platform_identify "$1")
+
+       case "$file_type" in
+               "chk")
+                       local header_len=$((0x$(get_magic_long_at "$1" 4)))
+                       local board_id_len=$(($header_len - 40))
+                       local board_id=$(dd if="$1" skip=40 bs=1 count=$board_id_len 2>/dev/null | hexdump -v -e '1/1 "%c"')
+                       echo "Found CHK image with device board_id $board_id"
+                       echo "Flashing CHK images in unsupported. Please use only .trx files."
+                       return 1
+               ;;
+               "cybertan")
+                       local magic=$(dd if="$1" bs=1 count=4 2>/dev/null | hexdump -v -e '1/1 "%c"')
+                       echo "Found CyberTAN image with device magic: $magic"
+                       echo "Flashing CyberTAN images in unsupported. Please use only .trx files."
+                       return 1
+               ;;
+               "trx")
+                       return 0
+               ;;
+               *)
+                       echo "Invalid image type. Please use only .trx files"
+                       return 1
+               ;;
+       esac
+}
+
+# Extract TRX and use stadard upgrade method
+platform_do_upgrade_chk() {
+       local header_len=$((0x$(get_magic_long_at "$1" 4)))
+       local trx="/tmp/$1.trx"
+
+       dd if="$1" of="$trx" bs=$header_len skip=1
+       shift
+       platform_do_upgrade_trx "$trx" "$@"
+}
+
+# Extract TRX and use stadard upgrade method
+platform_do_upgrade_cybertan() {
+       local trx="/tmp/$1.trx"
+
+       dd if="$1" of="$trx" bs=32 skip=1
+       shift
+       platform_do_upgrade_trx "$trx" "$@"
+}
+
+platform_do_upgrade_trx() {
+       local flash_type=$(platform_flash_type)
+
+       case "$flash_type" in
+               "serial")
+                       default_do_upgrade "$@"
+               ;;
+               "nand")
+                       echo "Firmware upgrade on NAND devices is REALLY unsupported."
+               ;;
+       esac
+}
+
+platform_do_upgrade() {
+       local file_type=$(platform_identify "$1")
+
+       case "$file_type" in
+               "chk")          platform_do_upgrade_chk "$ARGV";;
+               "cybertan")     platform_do_upgrade_cybertan "$ARGV";;
+               *)              platform_do_upgrade_trx "$ARGV";;
+       esac
+}