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-rw-r--r--target/linux/bcm53xx/base-files/lib/upgrade/platform.sh118
1 files changed, 118 insertions, 0 deletions
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
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
+}