bcm53xx: add platform_pre_upgrade to prepare for kernel+UBI sysupgrade

We can now detect that provided firmware contains kernel and UBI image
partitions. Flashing it in a sane way (keeping erase counters) still
needs to be implemented.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
SVN-Revision: 45391

diff --git a/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh b/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh
index c3f9a14c78dbe928ec7c1b05bf7906bb9a209683..26a32e30a4cbc3205a60b1af60b7aec7a71de5d7 100644 (file)
--- a/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh
+++ b/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh
@@ -124,6 +124,34 @@ platform_extract_trx_from_cybertan() {
        dd if="$1" of="$2" bs=32 skip=1
 }
 
+platform_pre_upgrade() {
+       local file_type=$(platform_identify "$1")
+       local dir="/tmp/sysupgrade-bcm53xx"
+       local trx="$1"
+
+       [ "$(platform_flash_type)" != "nand" ] && return
+
+       # Extract trx
+       case "$file_type" in
+               "chk")          trx="/tmp/$1.trx"; platform_extract_trx_from_chk "$1" "$trx";;
+               "cybertan")     trx="/tmp/$1.trx"; platform_extract_trx_from_cybertan "$1" "$trx";;
+       esac
+
+       # Extract partitions from trx
+       rm -fR $dir
+       mkdir -p $dir
+       otrx -e "$trx" \
+               -1 $dir/kernel \
+               -2 $dir/root
+
+       # Firmwares without UBI image should be flashed "normally"
+       local root_type=$(identify $dir/root)
+       [ "$root_type" != "ubi" ] && return
+
+       echo "Provided firmware contains kernel and UBI image, but flashing it in unsupported yet"
+       exit 1
+}
+
 platform_do_upgrade() {
        local file_type=$(platform_identify "$1")
        local trx="$1"