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-rw-r--r--target/linux/bcm53xx/base-files/lib/upgrade/platform.sh8
1 files changed, 5 insertions, 3 deletions
diff --git a/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh b/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh
index 88629549dc..4920b55caf 100644
--- a/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh
+++ b/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh
@@ -123,19 +123,21 @@ platform_pre_upgrade() {
local file_type=$(platform_identify "$1")
local dir="/tmp/sysupgrade-bcm53xx"
local trx="$1"
+ local offset
[ "$(platform_flash_type)" != "nand" ] && return
- # Extract trx
+ # Find trx offset
case "$file_type" in
- "chk") trx="/tmp/$(basename $1).trx"; platform_extract_trx_from_chk "$1" "$trx";;
- "cybertan") trx="/tmp/$(basename $1).trx"; platform_extract_trx_from_cybertan "$1" "$trx";;
+ "chk") offset=$((0x$(get_magic_long_at "$1" 4)));;
+ "cybertan") offset=32;;
esac
# Extract partitions from trx
rm -fR $dir
mkdir -p $dir
otrx extract "$trx" \
+ ${offset:+-o $offset} \
-1 $dir/kernel \
-2 $dir/root