bcm53xx: sysupgrade: extract TRX partitions directly from vendor image

Extracting full TRX out of vendor format is not needed as otrx supports
passing TRX offset. This saves some RAM during sysupgrade.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@45911 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh b/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh
index 8862954..4920b55 100644 (file)
--- 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