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| author | Rafał Miłecki <zajec5@gmail.com> | 2015-03-30 22:06:11 +0000 |
|---|---|---|
| committer | Rafał Miłecki <zajec5@gmail.com> | 2015-03-30 22:06:11 +0000 |
| commit | b34040f990393dc5bf2bb68bb8b551a32d95918d (patch) | |
| tree | 7e5c171180e6c909688f34debc61996eda8fc758 /target/linux/brcm47xx/base-files/lib | |
| parent | a54b8303d2a95f38d96bb1e2950f3e5c9ee76659 (diff) | |
| download | upstream-b34040f990393dc5bf2bb68bb8b551a32d95918d.tar.gz upstream-b34040f990393dc5bf2bb68bb8b551a32d95918d.tar.bz2 upstream-b34040f990393dc5bf2bb68bb8b551a32d95918d.zip | |
brcm47xx: compare provided firmware magic with device magic
This makes sysupgrade reject firmware images for different devices.
Right now only support for 2 sample devices is implemented.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
SVN-Revision: 45170
Diffstat (limited to 'target/linux/brcm47xx/base-files/lib')
| -rw-r--r-- | target/linux/brcm47xx/base-files/lib/upgrade/platform.sh | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/target/linux/brcm47xx/base-files/lib/upgrade/platform.sh b/target/linux/brcm47xx/base-files/lib/upgrade/platform.sh index f96935bf59..815c26cd86 100644 --- a/target/linux/brcm47xx/base-files/lib/upgrade/platform.sh +++ b/target/linux/brcm47xx/base-files/lib/upgrade/platform.sh @@ -6,6 +6,26 @@ get_magic_long_at() { dd if="$1" skip=$2 bs=1 count=4 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"' } +platform_machine() { + grep "machine" /proc/cpuinfo | sed "s/.*:[ \t]*//" +} + +platform_expected_chk_board_id() { + local machine=$(platform_machine) + + case "$machine" in + "Netgear WNDR4000") echo "U12H181T00_NETGEAR"; return;; + esac +} + +platform_expected_cybertan_pattern() { + local machine=$(platform_machine) + + case "$machine" in + "Linksys E1000 V2.1") echo "E100"; return;; + esac +} + brcm47xx_identify() { local magic @@ -41,8 +61,14 @@ platform_check_image() { local header_len=$((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_chk_board_id) echo "Found CHK image with device board_id $board_id" + [ -n "$dev_board_id" -a "$board_id" != "$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") [ "$magic" != "48445230" ] && { echo "No valid TRX firmware in the CHK image" @@ -52,8 +78,14 @@ platform_check_image() { return 0 ;; "cybertan") - magic=$(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_cybertan_pattern) + echo "Found CyberTAN image with device pattern: $pattern" + + [ -n "$dev_pattern" -a "$pattern" != "$dev_pattern" ] && { + echo "Firmware pattern doesn't match device pattern ($dev_pattern)" + return 1 + } magic=$(get_magic_long_at "$1" 32) [ "$magic" != "48445230" ] && { |