KumiSystems/openwrtv3
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

bcm53xx: compare provided firmware magic with device magic

Browse source 
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 45290
This commit is contained in:
Rafał Miłecki 2015-04-07 14:13:56 +00:00
parent e2b59e4dbc
commit a19b69a717
1 changed files with 29 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

31
target/linux/bcm53xx/base-files/lib/upgrade/platform.sh
View file

@ -6,6 +6,10 @@ get_magic_long_at() {
dd if="$1" skip=$2 bs=1 count=4 2>/dev/null | hexdump -v -e '1/1 "%02x"'
}
platform_machine() {
cat /proc/device-tree/compatible | tr '\0' '\t' | cut -f 1
}
platform_flash_type() {
# On NAND devices "rootfs" is UBI volume, so won't be find in /proc/mtd
grep -q "\"rootfs\"" /proc/mtd && {
@ -16,6 +20,16 @@ platform_flash_type() {
echo "nand"
}
platform_expected_image() {
local machine=$(platform_machine)
case "$machine" in
"netgear,r6250v1") echo "chk U12H245T00_NETGEAR"; return;;
"netgear,r6300v2") echo "chk U12H240T00_NETGEAR"; return;;
"netgear,r8000") echo "chk U12H315T00_NETGEAR"; return;;
esac
}
platform_identify() {
local magic
@ -49,14 +63,21 @@ platform_check_image() {
}
local file_type=$(platform_identify "$1")
local magic
case "$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"')
local dev_board_id=$(platform_expected_image)
echo "Found CHK image with device board_id $board_id"
[ -n "$dev_board_id" -a "chk $board_id" != "$dev_board_id" ] && {
echo "Firmware board_id doesn't match device board_id ($dev_board_id)"
return 1
}
magic=$(get_magic_long_at "$1" "$header_len")
[ "$magic" != "48445230" ] && {
echo "No valid TRX firmware in the CHK image"
@ -66,8 +87,14 @@ platform_check_image() {
return 0
;;
"cybertan")
local magic=$(dd if="$1" bs=1 count=4 2>/dev/null | hexdump -v -e '1/1 "%c"')
echo "Found CyberTAN image with device magic: $magic"
local pattern=$(dd if="$1" bs=1 count=4 2>/dev/null | hexdump -v -e '1/1 "%c"')
local dev_pattern=$(platform_expected_image)
echo "Found CyberTAN image with device pattern: $pattern"
[ -n "$dev_pattern" -a "cybertan $pattern" != "$dev_pattern" ] && {
echo "Firmware pattern doesn't match device pattern ($dev_pattern)"
return 1
}
magic=$(get_magic_long_at "$1" 32)
[ "$magic" != "48445230" ] && {