1 platform_check_image() {
2 [ "$ARGC" -gt 1 ] && return 1
4 case "$(get_magic_word "$1")" in
7 local kern_name=$(dd if="$1" bs=2 skip=5 count=8 2>/dev/null); kern_name="${kern_name%% *}"
8 local root_name=$(dd if="$1" bs=2 skip=17 count=8 2>/dev/null); root_name="${root_name%% *}"
10 if grep -q '"'$kern_name'"' /proc/mtd && grep -q '"'$root_name'"' /proc/mtd; then
13 echo "Invalid image. Missing the '$kern_name' or '$root_name' partition"
18 echo "Invalid image. Use combined .img files on this platform"
24 platform_do_upgrade() {
25 local kern_length=$((0x$(dd if="$1" bs=2 skip=1 count=4 2>/dev/null)/65536))
26 local kern_name=$(dd if="$1" bs=2 skip=5 count=8 2>/dev/null); kern_name="${kern_name%% *}"
27 local root_length=$((0x$(dd if="$1" bs=2 skip=13 count=4 2>/dev/null)/65536))
28 local root_name=$(dd if="$1" bs=2 skip=17 count=8 2>/dev/null); root_name="${root_name%% *}"
30 if grep -q '"'$kern_name'"' /proc/mtd && grep -q '"'$root_name'"' /proc/mtd; then
32 [ -f "$CONF_TAR" -a "$SAVE_CONFIG" -eq 1 ] && append="-j $CONF_TAR"
34 if [ -n "$kern_name" -a -n "$root_name" ] && \
35 [ ${kern_length:-0} -gt 0 -a ${root_length:-0} -gt ${kern_length:-0} ];
37 dd if="$1" bs=65536 skip=1 count=$kern_length 2>/dev/null | \
38 mtd -e $kern_name write - $kern_name
40 dd if="$1" bs=65536 skip=$((1+$kern_length)) count=$root_length 2>/dev/null | \
41 mtd -e $root_name $append write - $root_name