4 get_image
"$file" |
dd bs
=1 count
=2 skip
="$pos" 2>/dev
/null |
hexdump -v -n 2 -e '1/1 "%02x"'
7 platform_check_image_sdcard
() {
9 local magic diskdev partdev
diff
11 magic
=$
(get_magic_at
"$file" 510)
12 [ "$magic" != "55aa" ] && {
13 echo "Failed to verify MBR boot signature."
17 export_bootdevice
&& export_partdevice diskdev
0 ||
{
18 echo "Unable to determine upgrade device"
22 get_partitions
"/dev/$diskdev" bootdisk
24 #extract the boot sector from the image
25 get_image
"$@" |
dd of
=/tmp
/image.bs count
=1 bs
=512b
2>/dev
/null
27 get_partitions
/tmp
/image.bs image
30 diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
32 rm -f /tmp
/image.bs
/tmp
/partmap.bootdisk
/tmp
/partmap.image
34 if [ -n "$diff" ]; then
35 echo "Partition layout has changed. Full image will be written."
36 ask_bool
0 "Abort" && exit 1
41 platform_do_upgrade_sdcard
() {
42 local board
=$
(board_name
)
43 local diskdev partdev
diff
45 export_bootdevice
&& export_partdevice diskdev
0 ||
{
46 echo "Unable to determine upgrade device"
52 if [ "$UPGRADE_OPT_SAVE_PARTITIONS" = "1" ]; then
53 get_partitions
"/dev/$diskdev" bootdisk
55 #extract the boot sector from the image
56 get_image
"$@" |
dd of
=/tmp
/image.bs count
=1 bs
=512b
58 get_partitions
/tmp
/image.bs image
61 diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
66 if [ -n "$diff" ]; then
67 get_image
"$@" |
dd of
="/dev/$diskdev" bs
=4096 conv
=fsync
69 # Separate removal and addtion is necessary; otherwise, partition 1
70 # will be missing if it overlaps with the old partition 2
71 partx
-d - "/dev/$diskdev"
72 partx
-a - "/dev/$diskdev"
75 get_image
"$@" |
dd of
="$diskdev" bs
=512 skip
=1 seek
=1 count
=2048 conv
=fsync
76 #iterate over each partition from the image and write it to the boot disk
77 while read part start size
; do
78 if export_partdevice partdev
$part; then
79 echo "Writing image to /dev/$partdev..."
80 get_image
"$@" |
dd of
="/dev/$partdev" ibs
="512" obs
=1M skip
="$start" count
="$size" conv
=fsync
82 echo "Unable to find partition $part device, skipped."
84 done < /tmp
/partmap.image
87 echo "Writing new UUID to /dev/$diskdev..."
88 get_image
"$@" |
dd of
="/dev/$diskdev" bs
=1 skip
=440 count
=4 seek
=440 conv
=fsync
93 fw_setenv openwrt_bootargs
'earlyprintk console=ttyS0,115200 root=/dev/mmcblk0p2 rootfstype=auto rootwait'
94 fw_setenv openwrt_mmcload
'setenv bootargs "$openwrt_bootargs cfg80211.freg=$regdomain"; fatload mmc 0 0x01000000 zImage; fatload mmc 0 0x02000000 armada-385-turris-omnia.dtb'
95 fw_setenv factory_mmcload
'setenv bootargs "$bootargs cfg80211.freg=$regdomain"; btrload mmc 0 0x01000000 boot/zImage @; btrload mmc 0 0x02000000 boot/dtb @'
96 fw_setenv mmcboot
'run openwrt_mmcload || run factory_mmcload; bootz 0x01000000 - 0x02000000'
103 platform_copy_config_sdcard
() {
106 if export_partdevice partdev
1; then
108 [ -f /boot
/kernel.img
] || mount
-o rw
,noatime
/dev
/$partdev /boot
109 cp -af "$CONF_TAR" "/boot/$BACKUP_FILE"