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2019-02-11-upgrade-flash-chip-tplink-tl-wr840n-4mb-to-8mb
set -e
flash_size_in_MB=8
sysupgrade_OpenWRT="openwrt-18.06.1-ramips-mt76x8-tl-wr840n-v5-squashfs-sysupgrade.bin"
art_file="upload_openwrt_art.bin"
boot_loader="upload_openwrt_mtd0.bin"
sysupgrade_OpenWRT_size=$(wc -c $sysupgrade_OpenWRT | cut -f 1 -d " ")
art_file_size=$(wc -c $art_file | cut -f 1 -d " ")
boot_loader_size=$(wc -c $boot_loader | cut -f 1 -d " ")
echo "sysupgrade_OpenWRT_size: " $sysupgrade_OpenWRT_size
echo "art_file_size: " $art_file_size
echo "boot_loader_size: " $boot_loader_size
padcount=$(($flash_size_in_MB * 1024 * 1024 - $boot_loader_size - $art_file_size - $sysupgrade_OpenWRT_size))
echo " Write boot loader"
dd if=$boot_loader bs=512 >> "${sysupgrade_OpenWRT}_dump".bin
echo "Write firmware"
dd if=$sysupgrade_OpenWRT bs=512 >> "${sysupgrade_OpenWRT}_dump".bin
echo "Write padding FF"
dd if=/dev/zero ibs=1 count="$padcount" | tr "\000" "\377" >> "${sysupgrade_OpenWRT}_dump".bin
echo "Write art partition"
dd if=$art_file bs=512 >> "${sysupgrade_OpenWRT}_dump".bin
fixed-partitions partitions found on MTD device spi0.0
Creating 3 MTD partitions on "spi0.0":
0x000000000000-0x000000020000 : "boot"
0x000000020000-0x0000003f0000 : "firmware"
2 tplink-fw partitions found on MTD device firmware
0x000000020000-0x00000017d048 : "kernel"
0x00000017d048-0x0000003f0000 : "rootfs"
mtd: device 3 (rootfs) set to be root filesystem
1 squashfs-split partitions found on MTD device rootfs
0x0000003b0000-0x0000003f0000 : "rootfs_data"
0x0000003f0000-0x000000400000 : "factory"
m25p80 spi0.0: s25fl064k (8192 Kbytes)
VFS: Mounted root (squashfs filesystem) readonly on device 31:3.
Freeing unused kernel memory: 208K
This architecture does not have kernel memory protection.
init: Console is alive
init: - watchdog -
random: fast init done
kmodloader: loading kernel modules from /etc/modules-boot.d/*
kmodloader: done loading kernel modules from /etc/modules-boot.d/*
init: - preinit -
rt3050-esw 10110000.esw: link changed 0x00
random: procd: uninitialized urandom read (4 bytes read)
jffs2: Too few erase blocks (4) --> Your image is probably too big, leaving not enough space for jffs2.
mount_root: failed to mount -t jffs2 /dev/mtdblock4 /tmp/overlay: Invalid argument
mount_root: overlay filesystem has not been fully initialized yet
mount_root: switching to jffs2 overlay
mount_root: switching to jffs2 failed - fallback to ramoverlay
urandom-seed: Seed file not found (/etc/urandom.seed)
root@OpenWrt:~# df -h
Filesystem Size Used Available Use% Mounted on
/dev/root 2.3M 2.3M 0 100% /rom
tmpfs 29.5M 532.0K 29.0M 2% /tmp
tmpfs 29.5M 56.0K 29.5M 0% /tmp/root
overlayfs:/tmp/root 29.5M 56.0K 29.5M 0% /
tmpfs
root@OpenWrt:~# df -h
Filesystem Size Used Available Use% Mounted on
/dev/root 2.3M 2.3M 0 100% /rom
tmpfs 29.5M 540.0K 29.0M 2% /tmp
/dev/mtdblock4 4.1M 304.0K 3.8M 7% /overlay
overlayfs:/overlay 4.1M 304.0K 3.8M 7% /
tmpfs 512.0K 0 512.0K 0% /dev
root@OpenWrt:~#
root@OpenWrt:~# cat /proc/mtd
dev: size erasesize name
mtd0: 00020000 00010000 "boot"
mtd1: 007a0000 00010000 "firmware"
mtd2: 0015d05b 00010000 "kernel"
mtd3: 00642fa4 00010000 "rootfs"
mtd4: 00410000 00010000 "rootfs_data"
mtd5: 00010000 00010000 "config"
mtd6: 00030000 00010000 "factory"
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