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Testing OpenWrt on MLWG2
Gianpaolo Macario edited this page Jan 11, 2015
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Testing file (from 20150107-1419-OpenWrt_CC_Images):
gmacario@kruk:/var/lib/tftpboot$ md5sum openwrt-ramips-mt7620-mlwg2-initramfs-uImage.bin
77cb0c12ac27977698979b860315cc42 openwrt-ramips-mt7620-mlwg2-initramfs-uImage.bin
gmacario@kruk:/var/lib/tftpboot$
loaded via TFTP on my Kingston MobileLite Wireless G2.
- Serial console for the MLWG2 - See [xxx] for details
- A USB to 3.3V TTL dongle
- A terminal emulator to control the serial console - See TODO
- A machine configured as a TFTP server - See Installing TFTP Server on Ubuntu 14.04.1
- Ethernet cable to connect the MLWG2 to the TFTP server
Connect the header of the USB-to-TTL dongle to the pins on the MLWG2
| MLWG2 pin | Signal | Notes |
|---|---|---|
| 1 | +3.3Vdc | DO NOT CONNECT |
| 2 | TX | Connect to dongle pin "R" |
| 3 | RX | Connect to dongle pin "T" |
| 4 | GND | Connect to dongle pin "G" |
Plug the USB-to-TTL dongle into the PC that will run the terminal emulator.
Launch the terminal emulator to control the MLWG2 serial console
- Parameters: COMx:57600,8,n,1
Connect the Ethernet port in the MLWG2 to the TFTP server via the Ethernet cable
Power up the MLWG2 while keeping the "1" key pressed on the terminal emulator
U-Boot 1.1.3 (Dec 30 2013 - 10:32:24)
Board: Ralink APSoC DRAM: 64 MB
relocate_code Pointer at: 83fb4000
enable ephy clock...done. rf reg 29 = 5
SSC disabled.
spi_wait_nsec: 29
spi device id: c2 20 18 c2 20 (2018c220)
find flash: MX25L12805D
raspi_read: from:30000 len:1000
raspi_read: from:30000 len:1000
============================================
Ralink UBoot Version: 4.1.1.0
--------------------------------------------
ASIC 7620_MP (Port5<->None)
DRAM component: 512 Mbits DDR, width 16
DRAM bus: 16 bit
Total memory: 64 MBytes
Flash component: SPI Flash
Date:Dec 30 2013 Time:10:32:24
============================================
icache: sets:512, ways:4, linesz:32 ,total:65536
dcache: sets:256, ways:4, linesz:32 ,total:32768
##### The CPU freq = 580 MHZ ####
estimate memory size =64 Mbytes
Please choose the operation:
1: Load system code to SDRAM via TFTP.
2: Load system code then write to Flash via TFTP.
3: Boot system code via Flash (default).
4: Entr boot command line interface.
7: Load Boot Loader code then write to Flash via Serial.
9: Load Boot Loader code then write to Flash via TFTP.
You choosed 1
Provide the proper parameters to the bootloader - in our example:
- Input device IP: 192.168.64.90
- Input server IP: 192.168.64.106
- Input Linux Kernel filename: openwrt-ramips-mt7620-mlwg2-initramfs-uImage.bin
Watch the serial console for the following messages
...
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level
procd: - early -
procd: - watchdog -
procd: - ubus -
procd: - init -
Please press Enter to activate this console.
Press "Enter" to activate the console on the serial port.
procd: Console is alive
BusyBox v1.22.1 (2015-01-06 02:30:44 CST) built-in shell (ash)
Enter 'help' for a list of built-in commands.
procd: - watchdog -
_______ ________ __
| |.-----.-----.-----.| | | |.----.| |_
| - || _ | -__| || | | || _|| _|
|_______|| __|_____|__|__||________||__| |____|
|__| W I R E L E S S F R E E D O M
-----------------------------------------------------
CHAOS CALMER (Bleeding Edge, r43860)
-----------------------------------------------------
* 1 1/2 oz Gin Shake with a glassful
* 1/4 oz Triple Sec of broken ice and pour
* 3/4 oz Lime Juice unstrained into a goblet.
* 1 1/2 oz Orange Juice
* 1 tsp. Grenadine Syrup
-----------------------------------------------------
root@OpenWrt:/#
You can now control the MLWG2 through the shell.
root@OpenWrt:/# cat /proc/version
Linux version 3.14.27 (brown@brown) (gcc version 4.8.3 (OpenWrt/Linaro GCC 4.8-2014.04 r43857) ) #12 Wed Jan 7 07:13:00 CST 2015
root@OpenWrt:/#
root@OpenWrt:/# cat /proc/cmdline
console=ttyS0,57600 rootfstype=squashfs,jffs2
root@OpenWrt:/#
root@OpenWrt:/# cat /proc/cpuinfo
system type : Ralink MT7620N ver:2 eco:6
machine : Kingston MLWG2
processor : 0
cpu model : MIPS 24KEc V5.0
BogoMIPS : 766.77
wait instruction : yes
microsecond timers : yes
tlb_entries : 32
extra interrupt vector : yes
hardware watchpoint : yes, count: 4, address/irw mask: [0x0ffc, 0x0ffc, 0x0ffb, 0x0ffb]
isa : mips1 mips2 mips32r1 mips32r2
ASEs implemented : mips16 dsp
shadow register sets : 1
kscratch registers : 0
core : 0
VCED exceptions : not available
VCEI exceptions : not available
root@OpenWrt:/#
root@OpenWrt:/# cat /proc/filesystems
nodev sysfs
nodev rootfs
nodev ramfs
nodev bdev
nodev proc
nodev tmpfs
nodev debugfs
nodev sockfs
nodev pipefs
nodev devpts
squashfs
nodev jffs2
nodev overlayfs
nodev mtd_inodefs
ext3
ext2
ext4
vfat
msdos
root@OpenWrt:/#
root@OpenWrt:/# cat /proc/mounts
rootfs / rootfs rw 0 0
proc /proc proc rw,noatime 0 0
sysfs /sys sysfs rw,noatime 0 0
tmpfs /tmp tmpfs rw,nosuid,nodev,noatime 0 0
tmpfs /dev tmpfs rw,relatime,size=512k,mode=755 0 0
devpts /dev/pts devpts rw,relatime,mode=600 0 0
debugfs /sys/kernel/debug debugfs rw,noatime 0 0
root@OpenWrt:/#
root@OpenWrt:/# cat /proc/mtd
dev: size erasesize name
mtd0: 00030000 00010000 "u-boot"
mtd1: 00010000 00010000 "u-boot-env"
mtd2: 00010000 00010000 "factory"
mtd3: 00f60000 00010000 "firmware"
mtd4: 00050000 00010000 "user-config"
root@OpenWrt:/#
root@OpenWrt:/# ls -la /
drwxr-xr-x 16 root root 0 Jan 1 1970 .
drwxr-xr-x 16 root root 0 Jan 1 1970 ..
drwxr-xr-x 2 root root 0 Jan 7 13:12 bin
drwxr-xr-x 5 root root 800 Jan 7 13:09 dev
drwxr-xr-x 14 root root 0 Jan 7 13:09 etc
-rwxr-xr-x 1 root root 78 Jul 31 13:34 init
drwxr-xr-x 12 root root 0 Jan 7 13:12 lib
drwxr-xr-x 2 root root 0 Jan 7 13:12 mnt
drwxr-xr-x 2 root root 0 Jan 7 13:12 overlay
dr-xr-xr-x 40 root root 0 Jan 1 1970 proc
drwxr-xr-x 2 root root 0 Jan 7 13:12 rom
drwxr-xr-x 2 root root 0 Jan 7 13:12 root
drwxr-xr-x 2 root root 0 Jan 7 13:12 sbin
dr-xr-xr-x 11 root root 0 Jan 1 1970 sys
drwxrwxrwt 12 root root 340 Jan 7 13:09 tmp
drwxr-xr-x 6 root root 0 Jan 7 13:12 usr
lrwxrwxrwx 1 root root 4 Jan 7 13:12 var -> /tmp
drwxr-xr-x 4 root root 0 Jan 7 13:12 www
root@OpenWrt:/#
root@OpenWrt:/# ls -la /etc
drwxr-xr-x 14 root root 0 Jan 7 13:09 .
drwxr-xr-x 16 root root 0 Jan 1 1970 ..
lrwxrwxrwx 1 root root 7 Jan 7 13:12 TZ -> /tmp/TZ
-rw-r--r-- 1 root root 662 Jan 7 13:08 banner
-rw-r--r-- 1 root root 408 Oct 20 18:55 banner.failsafe
drwxr-xr-x 2 root root 0 Jan 7 13:12 board.d
-rw-r--r-- 1 root root 338 Jan 7 13:09 board.json
drwxr-xr-x 2 root root 0 Jan 7 13:09 config
drwxr-xr-x 2 root root 0 Jan 7 13:12 crontabs
-rw-r--r-- 1 root root 76 Jan 7 13:08 device_info
-rwxr-xr-x 1 root root 3927 Jan 5 22:37 diag.sh
-rw-r--r-- 1 root root 1368 Jan 7 13:08 dnsmasq.conf
drwx------ 2 root root 0 Jan 7 13:09 dropbear
-rw-r--r-- 1 root root 38 Jan 7 13:08 e2fsck.conf
-rw-r--r-- 1 root root 0 Jan 7 13:09 ethers
-rw-r--r-- 1 root root 352 Jan 7 13:08 firewall.user
lrwxrwxrwx 1 root root 10 Jan 7 13:12 fstab -> /tmp/fstab
-rw-r--r-- 1 root root 123 Jul 31 13:34 group
-rw-r--r-- 1 root root 20 Jul 31 13:34 hosts
-rw-r--r-- 1 root root 326 Jan 7 13:08 hotplug-preinit.json
drwxr-xr-x 7 root root 0 Jan 7 13:12 hotplug.d
-rw-r--r-- 1 root root 1657 Jan 7 13:08 hotplug.json
drwxr-xr-x 2 root root 0 Jan 7 13:12 init.d
-rw-r--r-- 1 root root 101 Jul 31 13:34 inittab
-rw------- 1 root root 10926 Jan 7 13:07 login.defs
drwxr-xr-x 2 root root 0 Jan 7 13:12 modules-boot.d
drwxr-xr-x 2 root root 0 Jan 7 13:12 modules.d
lrwxrwxrwx 1 root root 12 Jan 7 13:12 mtab -> /proc/mounts
-rw-r--r-- 1 root root 225 Jan 7 13:08 openwrt_release
-rw-r--r-- 1 root root 7 Jan 7 13:08 openwrt_version
-rw-r--r-- 1 root root 873 Jan 7 13:08 opkg.conf
-rw-r--r-- 1 root root 190 Jul 31 13:34 passwd
drwxr-xr-x 2 root root 0 Jan 7 13:12 ppp
-rwxr-xr-x 1 root root 952 Jul 31 13:34 preinit
-rw-r--r-- 1 root root 530 Oct 20 18:55 profile
-rw-r--r-- 1 root root 2478 Jul 31 13:34 protocols
drwxr-xr-x 2 root root 0 Jan 7 13:12 rc.button
-rwxr-xr-x 1 root root 2354 Jul 31 13:34 rc.common
drwxr-xr-x 2 root root 0 Jan 7 13:09 rc.d
-rw-r--r-- 1 root root 132 Jul 31 13:34 rc.local
lrwxrwxrwx 1 root root 16 Jan 7 13:12 resolv.conf -> /tmp/resolv.conf
-rw-r--r-- 1 root root 3017 Jul 31 13:34 services
-rw------- 1 root root 115 Jul 31 13:34 shadow
-rw-r--r-- 1 root root 9 Jul 31 13:34 shells
-rw-r--r-- 1 root root 913 Aug 20 20:37 sysctl.conf
-rw-r--r-- 1 root root 128 Jul 31 13:34 sysupgrade.conf
drwxr-xr-x 2 root root 0 Jan 7 13:09 uci-defaults
-rw------- 1 root root 818 Jan 7 13:08 vsftpd.conf
root@OpenWrt:/#
root@OpenWrt:/# cat /etc/inittab
::sysinit:/etc/init.d/rcS S boot
::shutdown:/etc/init.d/rcS K shutdown
::askconsole:/bin/ash --login
root@OpenWrt:/#
root@OpenWrt:/# ps
PID USER VSZ STAT COMMAND
1 root 1432 S /sbin/procd
2 root 0 SW [kthreadd]
3 root 0 SW [ksoftirqd/0]
4 root 0 SW [kworker/0:0]
5 root 0 SW< [kworker/0:0H]
6 root 0 SW [kworker/u2:0]
7 root 0 SW< [khelper]
8 root 0 SW [kworker/u2:1]
69 root 0 SW< [writeback]
72 root 0 SW< [bioset]
74 root 0 SW< [kblockd]
110 root 0 SW [kswapd0]
157 root 0 SW [fsnotify_mark]
184 root 0 SW [spi32766]
222 root 0 SW< [deferwq]
231 root 0 SW [khubd]
299 root 0 SW [kworker/0:2]
384 root 892 S /sbin/ubusd
385 root 1532 S /bin/ash --login
554 root 0 SW< [ipv6_addrconf]
639 root 0 SW< [cfg80211]
866 root 1052 S /sbin/logd -S 16
898 root 1552 S /sbin/netifd
920 root 1188 S /usr/sbin/odhcpd
972 root 1520 S /usr/sbin/telnetd -F -l /bin/login.sh
986 root 1536 S /usr/sbin/uhttpd -f -h /www -r OpenWrt -x /cgi-bin -
991 root 1012 S /usr/sbin/vsftpd
1055 root 1524 S /usr/sbin/ntpd -n -S /usr/sbin/ntpd-hotplug -p 0.ope
1092 nobody 972 S /usr/sbin/dnsmasq -C /var/etc/dnsmasq.conf -k
1183 root 1148 S /usr/sbin/dropbear -F -P /var/run/dropbear.1.pid -p
1244 root 1524 R ps
root@OpenWrt:/#
root@OpenWrt:/# ifconfig -a
br-lan Link encap:Ethernet HWaddr 00:26:B7:08:E0:A2
inet addr:192.168.1.1 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fd3c:cc8a:ebd0::1/60 Scope:Global
inet6 addr: fe80::226:b7ff:fe08:e0a2/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1095 errors:0 dropped:0 overruns:0 frame:0
TX packets:75 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:115531 (112.8 KiB) TX bytes:8466 (8.2 KiB)
eth0 Link encap:Ethernet HWaddr 00:26:B7:08:E0:A2
inet6 addr: fe80::226:b7ff:fe08:e0a2/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1300 errors:0 dropped:0 overruns:0 frame:0
TX packets:59 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:165186 (161.3 KiB) TX bytes:8347 (8.1 KiB)
Interrupt:5
eth0.1 Link encap:Ethernet HWaddr 00:26:B7:08:E0:A2
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1299 errors:0 dropped:11 overruns:0 frame:0
TX packets:51 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:141567 (138.2 KiB) TX bytes:6242 (6.0 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:2606 errors:0 dropped:0 overruns:0 frame:0
TX packets:2606 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:179966 (175.7 KiB) TX bytes:179966 (175.7 KiB)
wlan0 Link encap:Ethernet HWaddr 00:26:B7:08:E0:A2
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
root@OpenWrt:/#
root@OpenWrt:/# cat /etc/config/network
config interface 'loopback'
option ifname 'lo'
option proto 'static'
option ipaddr '127.0.0.1'
option netmask '255.0.0.0'
config globals 'globals'
option ula_prefix 'fd3c:cc8a:ebd0::/48'
config interface 'lan'
option ifname 'eth0.1'
option force_link '1'
option macaddr '00:26:b7:08:e0:a2'
option type 'bridge'
option proto 'static'
option ipaddr '192.168.1.1'
option netmask '255.255.255.0'
option ip6assign '60'
root@OpenWrt:/#
root@OpenWrt:/# cat /etc/config/wireless
config wifi-device radio0
option type mac80211
option channel 11
option hwmode 11g
option path '10180000.wmac'
option htmode HT20
# REMOVE THIS LINE TO ENABLE WIFI:
option disabled 1
config wifi-iface
option device radio0
option network lan
option mode ap
option ssid OpenWrt
option encryption none
root@OpenWrt:/#
From the serial console use the uci command to take a static
IP address in your local network and use Google DNS
(replace x and y appropriately)
# uci set network.lan.netmask=255.255.255.0
# uci set network.lan.ipaddr=192.168.x.y
# uci set network.lan.gateway=192.168.x.z
# uci set network.lan.broadcast=192.168.x.255
# uci set network.lan.dns="8.8.4.4 8.8.8.8"
# uci commit network
As an alternative, directly edit file /etc/config/network
# vi /etc/config/network
Then restart networking
# /etc/init.d/network restart
Verify that the network configuration has changed accordingly
(in this example we had network.lan.ipaddr=192.168.12.50)
root@OpenWrt:/# ifconfig
br-lan Link encap:Ethernet HWaddr 00:26:B7:08:E0:A2
inet addr:192.168.12.50 Bcast:192.168.12.255 Mask:255.255.255.0
inet6 addr: fdb9:de23:f3ae::1/60 Scope:Global
inet6 addr: fe80::226:b7ff:fe08:e0a2/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:23 errors:0 dropped:0 overruns:0 frame:0
TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2072 (2.0 KiB) TX bytes:1520 (1.4 KiB)
eth0 Link encap:Ethernet HWaddr 00:26:B7:08:E0:A2
inet6 addr: fe80::226:b7ff:fe08:e0a2/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:934 errors:0 dropped:1 overruns:0 frame:0
TX packets:64 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:130692 (127.6 KiB) TX bytes:9079 (8.8 KiB)
Interrupt:5
eth0.1 Link encap:Ethernet HWaddr 00:26:B7:08:E0:A2
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:24 errors:0 dropped:0 overruns:0 frame:0
TX packets:13 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2118 (2.0 KiB) TX bytes:1566 (1.5 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:2126 errors:0 dropped:0 overruns:0 frame:0
TX packets:2126 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:147326 (143.8 KiB) TX bytes:147326 (143.8 KiB)
root@OpenWrt:/#
Perform some tests:
- From the MLWG2, try pinging another host in the same subnet - for instance, the TFTP server
# ping <tftp_server_ip>
- Now try pinging a well known server - for instance, Google DNS
# ping 8.8.8.8
- From the TFTP server do a port scan of the MLWG2
$ sudo nmap <device_ip>
Sample result (in this example we had tftp_server_ip=192.168.12.20 and device_ip=192.168.12.50):
gmacario@kruk:~$ sudo nmap 192.168.12.50
Starting Nmap 6.40 ( http://nmap.org ) at 2015-01-09 15:21 CET
Nmap scan report for denerg12050.polito.it (192.168.12.50)
Host is up (0.00043s latency).
Not shown: 995 closed ports
PORT STATE SERVICE
21/tcp open ftp
22/tcp open ssh
23/tcp open telnet
53/tcp open domain
80/tcp open http
MAC Address: 00:26:B7:08:E0:A2 (Kingston Technology Company)
Nmap done: 1 IP address (1 host up) scanned in 90.79 seconds
gmacario@kruk:~$
Prerequisites:
- Ethernet networking properly setup.
- A PC on the same Ethernet segment with a recent web browser installed
Browse the device from the PC (example: http://129.168.12.50/)
Authorization Required
Please enter your usename and password.
- Username: root
- Password:
Note: the first time you power up the device no password is set and you can just select "Login".
You will be reminded
No password set!
There is no password set on this router. Please configure a root password to protect the web interface and enable SSH.
Go to password configuration...
From LuCI: System > Administration
Router Password
Changes the administrator password for accessing the device
- Password:
- Confirmation:
Provide a new password, then select "Save & Apply".
From LuCI: System > Backup / Flash Firmware
Flash new firmware image - Upload a sysupgrade-compatible image here to replace the running firmware. Check "Keep settings" to retain the current configuration (requires an OpenWrt compatible firmware image).
- Keep settings: Yes
- Image: .../20150107-1419-OpenWrt_CC_images/openwrt-ramips-mt7620-mlwg2-squashfs-sysupgrade.bin
Then select "Flash image..."
Flash Firmware - Verify
The flash image was uploaded. Below is the checksum and file size listed, compare them with the original file to ensure data integrity. Click "Proceed" below to start the flash procedure.
- Checksum: 5e413331373e88978fde018724b723a0
- Size: 6.75 MB (15.38 MB available)
- Configuration files will be kept.
Verify that the displayed checksum matches the one returned by "md5sum filename".
Select "Proceed"
DO NOT POWER OFF THE DEVICE
(optional) Verify running processes from the serial console
root@OpenWrt:/# ps
PID USER VSZ STAT COMMAND
1 root 1496 S /sbin/procd
2 root 0 SW [kthreadd]
3 root 0 SW [ksoftirqd/0]
4 root 0 SW [kworker/0:0]
5 root 0 SW< [kworker/0:0H]
6 root 0 SW [kworker/u2:0]
7 root 0 SW< [khelper]
8 root 0 SW [kworker/u2:1]
69 root 0 SW< [writeback]
72 root 0 SW< [bioset]
74 root 0 SW< [kblockd]
110 root 0 SW [kswapd0]
157 root 0 SW [fsnotify_mark]
184 root 0 RW [spi32766]
222 root 0 SW< [deferwq]
231 root 0 SW [khubd]
384 root 1532 S /bin/ash --login
553 root 0 SW< [ipv6_addrconf]
638 root 0 SW< [cfg80211]
985 root 1520 S /usr/sbin/telnetd -F -l /bin/login.sh
3853 root 0 SW [kworker/0:2]
5377 root 1624 S {sysupgrade} /bin/sh /sbin/sysupgrade /tmp/firmware.
5414 root 1624 S {sysupgrade} /bin/sh /sbin/sysupgrade /tmp/firmware.
5415 root 960 R mtd -j /tmp/sysupgrade.tgz write - firmware
5421 root 1516 S cat /tmp/firmware.img
5423 root 1524 R ps
root@OpenWrt:/#
FIXME: The system has rebooted and reverted to the factory RaLink firmware (WHY???)
root@OpenWrt:/#
root@OpenWrt:/#
root@OpenWrt:/#
root@OpenWrt:/# [ 582.140000] reboot: Restarting system
U-Boot 1.1.3 (Dec 30 2013 - 10:32:24)
Board: Ralink APSoC DRAM: 64 MB
relocate_code Pointer at: 83fb4000
enable ephy clock...done. rf reg 29 = 5
SSC disabled.
******************************
Software System Reset Occurred
******************************
spi_wait_nsec: 29
Possible workarounds:
- Install OpenWrt from the stock MLWG2 bootloader
- Use commandline (sysupgrade) tool
Logged into the TFTP server, copy the image file on the TFTP root directory
$ cd /var/lib/tftpboot
$ sudo scp .../20150107-1419-OpenWrt_CC_images/openwrt-ramips-mt7620-mlwg2-squashfs-sysupgrade.bin .
(Optional) Verify the image checksum
ubuntu@ubuntu:/var/lib/tftpboot$ md5sum openwrt-ramips-mt7620-mlwg2-*
5e413331373e88978fde018724b723a0 openwrt-ramips-mt7620-mlwg2-squashfs-sysupgrade.bin
ubuntu@ubuntu:/var/lib/tftpboot$
Make sure the MLWG2 is fully charged and connected to the power supply.
Power up the MLWG2 while keeping the "2" key pressed on the terminal emulator
U-Boot 1.1.3 (Dec 30 2013 - 10:32:24)
Board: Ralink APSoC DRAM: 64 MB
relocate_code Pointer at: 83fb4000
enable ephy clock...done. rf reg 29 = 5
SSC disabled.
spi_wait_nsec: 29
spi device id: c2 20 18 c2 20 (2018c220)
find flash: MX25L12805D
raspi_read: from:30000 len:1000
raspi_read: from:30000 len:1000
============================================
Ralink UBoot Version: 4.1.1.0
--------------------------------------------
ASIC 7620_MP (Port5<->None)
DRAM component: 512 Mbits DDR, width 16
DRAM bus: 16 bit
Total memory: 64 MBytes
Flash component: SPI Flash
Date:Dec 30 2013 Time:10:32:24
============================================
icache: sets:512, ways:4, linesz:32 ,total:65536
dcache: sets:256, ways:4, linesz:32 ,total:32768
##### The CPU freq = 580 MHZ ####
estimate memory size =64 Mbytes
Please choose the operation:
1: Load system code to SDRAM via TFTP.
2: Load system code then write to Flash via TFTP.
3: Boot system code via Flash (default).
4: Entr boot command line interface.
7: Load Boot Loader code then write to Flash via Serial.
9: Load Boot Loader code then write to Flash via TFTP.
You choosed 2
0
raspi_read: from:40028 len:6
2: System Load Linux Kernel then write to Flash via TFTP.
Warning!! Erase Linux in Flash then burn new one. Are you sure?(Y/N)
Think twice, then type Y
Please Input new ones /or Ctrl-C to discard
Input device IP (192.168.64.90) ==:192.168.64.90
Input server IP (192.168.64.106) ==:192.168.64.106
Input Linux Kernel filename (openwrt-ramips-mt7620-mlwg2-initramfs-uImage.bin) ==:openwrt-ramips-mt7620-mlwg2-squashfs-sysupgrade.bin
The file is downloaded then written to the Flash memory. When finished, then the device will reboot and load the new kernel.
Verify that the new kernel is loaded - note that the first time the initialization may take longer
...
[ 27.030000] device eth0 entered promiscuous mode
[ 27.030000] br-lan: port 1(eth0.1) entered forwarding state
[ 27.030000] br-lan: port 1(eth0.1) entered forwarding state
[ 29.030000] br-lan: port 1(eth0.1) entered forwarding state
[ 29.410000] jffs2_scan_eraseblock(): End of filesystem marker found at 0x0
[ 29.450000] jffs2_build_filesystem(): unlocking the mtd device... done.
[ 29.450000] jffs2_build_filesystem(): erasing all blocks after the end marker... done.
[ 100.800000] jffs2: notice: (1100) jffs2_build_xattr_subsystem: complete building xattr subsystem, 0 of xdatum (0 unchecked, 0 orphan) and 0 of xref (0 dead, 0 orphan) found.
procd: - init complete -
You should eventually be able to get a shell by pressing the "Enter" key on the serial console.
BusyBox v1.22.1 (2015-01-06 02:30:44 CST) built-in shell (ash)
Enter 'help' for a list of built-in commands.
_______ ________ __
| |.-----.-----.-----.| | | |.----.| |_
| - || _ | -__| || | | || _|| _|
|_______|| __|_____|__|__||________||__| |____|
|__| W I R E L E S S F R E E D O M
-----------------------------------------------------
CHAOS CALMER (Bleeding Edge, r43860)
-----------------------------------------------------
* 1 1/2 oz Gin Shake with a glassful
* 1/4 oz Triple Sec of broken ice and pour
* 3/4 oz Lime Juice unstrained into a goblet.
* 1 1/2 oz Orange Juice
* 1 tsp. Grenadine Syrup
-----------------------------------------------------
root@OpenWrt:/#
Congratulations! You just upgraded your Flash memory with OpenWrt.
root@OpenWrt:~# sysupgrade
Usage: /sbin/sysupgrade [<upgrade-option>...] <image file or URL>
/sbin/sysupgrade [-q] [-i] <backup-command> <file>
upgrade-option:
-d <delay> add a delay before rebooting
-f <config> restore configuration from .tar.gz (file or url)
-i interactive mode
-c attempt to preserve all changed files in /etc/
-n do not save configuration over reflash
-T | --test
Verify image and config .tar.gz but do not actually flash.
-F | --force
Flash image even if image checks fail, this is dangerous!
-q less verbose
-v more verbose
-h | --help display this help
backup-command:
-b | --create-backup <file>
create .tar.gz of files specified in sysupgrade.conf
then exit. Does not flash an image. If file is '-',
i.e. stdout, verbosity is set to 0 (i.e. quiet).
-r | --restore-backup <file>
restore a .tar.gz created with sysupgrade -b
then exit. Does not flash an image. If file is '-',
the archive is read from stdin.
-l | --list-backup
list the files that would be backed up when calling
sysupgrade -b. Does not create a backup file.
root@OpenWrt:~#
TODO: sysupgrade --test xxx.bin
Power up MLWG2 without pressing any other button.
Watch the serial console for the following message
[ 27.640000] br-lan: port 1(eth0.1) entered forwarding state
[ 29.640000] br-lan: port 1(eth0.1) entered forwarding state
procd: - init complete -
The configuration should be the same as from last boot.
Assuming that you had changed the IP address and set the root password, try to login via ssh
$ ssh [email protected]
You should be able to login to a shell after providing the root password.
Halt the system by typing
root@OpenWrt:~# sync
root@OpenWrt:~# sync
root@OpenWrt:~# halt
root@OpenWrt:~#
Watch the serial console for the following messages
...
procd: - shutdown -
[ 178.520000] br-lan: port 1(eth0.1) entered disabled state
[ 178.520000] device eth0.1 left promiscuous mode
[ 178.540000] device eth0 left promiscuous mode
[ 178.540000] br-lan: port 1(eth0.1) entered disabled state
[ 178.590000] IPv6: ADDRCONF(NETDEV_UP): eth0.1: link is not ready
procd:[ 182.030000] reboot: System halted
The blue LEDs should then turn off.
Reference: http://wiki.openwrt.org/doc/howto/generic.failsafe
Power up MLWG2 while keeping the "Reset" pin pressed.
Watch the serial console for the following message
[ 27.640000] br-lan: port 1(eth0.1) entered forwarding state
[ 29.640000] br-lan: port 1(eth0.1) entered forwarding state
procd: - init complete -
TODO: Not sure whether the Reset pin works.
Triggering failsafe mode by pressing "f" key and "enter" on the serial console does seem to work, though.
procd: - preinit -
[ 9.410000] 8021q: adding VLAN 0 to HW filter on device eth0
[ 9.520000] random: mktemp urandom read with 79 bits of entropy available
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level
f
- failsafe -
BusyBox v1.22.1 (2015-01-06 02:30:44 CST) built-in shell (ash)
Enter 'help' for a list of built-in commands.
ash: can't access tty; job control turned off
_______ ________ __
| |.-----.-----.-----.| | | |.----.| |_
| - || _ | -__| || | | || _|| _|
|_______|| __|_____|__|__||________||__| |____|
|__| W I R E L E S S F R E E D O M
-----------------------------------------------------
CHAOS CALMER (Bleeding Edge, r43860)
-----------------------------------------------------
* 1 1/2 oz Gin Shake with a glassful
* 1/4 oz Triple Sec of broken ice and pour
* 3/4 oz Lime Juice unstrained into a goblet.
* 1 1/2 oz Orange Juice
* 1 tsp. Grenadine Syrup
-----------------------------------------------------
================= FAILSAFE MODE active ================
special commands:
* firstboot reset settings to factory defaults
* mount_root mount root-partition with config files
after mount_root:
* passwd change root's password
* /etc/config directory with config files
for more help see:
http://wiki.openwrt.org/doc/howto/generic.failsafe
=======================================================
root@(none):/# [ 42.710000] random: nonblocking pool is initialized
root@(none):/#
Referemce: http://wiki.openwrt.org/doc/uci/wireless
$ uci set wireless.@wifi-iface[0].ssid=OpenWRT-MLWG2
$ uci set wireless.@wifi-iface[0].encryption=psk2
$ uci set wireless.@wifi-iface[0].key="MySecret"
$ uci set wireless.@wifi-device[0].disabled=0
$ uci commit wireless
$ wifi
Verify configuration
root@OpenWrt:~# uci show wireless
wireless.radio0=wifi-device
wireless.radio0.type=mac80211
wireless.radio0.channel=11
wireless.radio0.hwmode=11g
wireless.radio0.path=10180000.wmac
wireless.radio0.htmode=HT20
wireless.radio0.disabled=0
wireless.@wifi-iface[0]=wifi-iface
wireless.@wifi-iface[0].device=radio0
wireless.@wifi-iface[0].network=lan
wireless.@wifi-iface[0].mode=ap
wireless.@wifi-iface[0].encryption=none
wireless.@wifi-iface[0].ssid=OpenWRT-MLWG2
root@OpenWrt:~#
Now connect to Wi-Fi SSID "OpenWRT-MLWG2" ==> Success!
You can also verify status on LuCI: http://192.168.64.90/ Network > Wifi
Tested with
- uci set wireless.@wifi-iface[0].encryption=none (default)
- uci set wireless.@wifi-iface[0].encryption=psk2
# opkg update
# opkg install git
Test the correct installation of the git command
root@OpenWrt:/# git ls-remote git://git.openwrt.org/openwrt.git
778ec528fe706365846a5787a0e47a8da3f9363c HEAD
778ec528fe706365846a5787a0e47a8da3f9363c refs/heads/master
778ec528fe706365846a5787a0e47a8da3f9363c refs/remotes/trunk
root@OpenWrt:/#
Browse LuCI homepage (example: http://192.168.64.90/), then
System > Software
Download and install package: git
LuCI: System > Backup / Flash Firmware
Then select "Download backup" to generate an archive and download it from the browser.
Result saved as ~/Downloads/backup-OpenWrt-2015-01-11.tar.gz
$ tar tvfz ~/Downloads/backup-OpenWrt-2015-01-11.tar.gz
-rw-r--r-- root/root 806 2015-01-07 14:07 etc/config/ddns
-rw-r--r-- root/root 10856 2015-01-07 14:07 etc/config/ddns.sample
-rw-r--r-- root/root 738 2015-01-07 14:09 etc/config/dhcp
-rw-r--r-- root/root 134 2015-01-07 14:07 etc/config/dropbear
-rw-r--r-- root/root 3887 2015-01-07 14:08 etc/config/firewall
-rw-r--r-- root/root 151 2015-01-07 14:09 etc/config/fstab
-rw-r--r-- root/root 624 2015-01-07 14:09 etc/config/luci
-rw-r--r-- root/root 595 2015-01-07 14:09 etc/config/minidlna
-rw-r--r-- root/root 529 2015-01-07 14:13 etc/config/network
-rw-r--r-- root/root 594 2015-01-10 14:56 etc/config/system
-rw-r--r-- root/root 2265 2015-01-07 14:08 etc/config/transmission
-rw-r--r-- root/root 900 2015-01-07 14:09 etc/config/ucitrack
-rw-r--r-- root/root 635 2015-01-07 14:09 etc/config/uhttpd
-rw-r--r-- root/root 329 2015-01-10 18:37 etc/config/wireless
-rw------- root/root 457 2015-01-07 14:10 etc/dropbear/dropbear_dss_host_key
-rw------- root/root 805 2015-01-07 14:10 etc/dropbear/dropbear_rsa_host_key
-rw-r--r-- root/root 123 2014-07-31 15:34 etc/group
-rw-r--r-- root/root 20 2014-07-31 15:34 etc/hosts
-rw-r--r-- root/root 101 2014-07-31 15:34 etc/inittab
-rw-r--r-- root/root 190 2014-07-31 15:34 etc/passwd
-rw-r--r-- root/root 530 2014-10-20 20:55 etc/profile
-rw-r--r-- root/root 132 2014-07-31 15:34 etc/rc.local
-rw------- root/root 132 2015-01-10 14:48 etc/shadow
-rw-r--r-- root/root 9 2014-07-31 15:34 etc/shells
-rw-r--r-- root/root 913 2014-08-20 22:37 etc/sysctl.conf
$
First save your custom OpenWrt configuration (see above).
With the device running, insert a paper clip to press and hold the reset button for about 10 seconds then release. If you are watching the console....it should say "FACTORY RESET"
This should reset the device to the OpenWrt defaults....
==> (2015-01-11 09:16 CET) Does not work on my MLWG2
(tested with image 2015-01-09 14:19 image by ldpinney openwrt-ramips-mt7620-mlwg2-squashfs-sysupgrade.bin
built from OpenWrt Chaos Calmer r43860)
Alternatively, from LuCI LuCI: System > Backup / Flash Firmware select "Perform reset" to reset to defaults. Confirm when requested, the browser will show
Waiting for changes to be applied...
Then reboot with default configuration.
From http://wiki.openwrt.org/doc/devel/add.new.device
TODO
Execute the /sbin/buttons.sh command from serial console
after booting in failsafe mode:
BusyBox v1.22.1 (2015-01-06 02:30:44 CST) built-in shell (ash)
Enter 'help' for a list of built-in commands.
ash: can't access tty; job control turned off
_______ ________ __
| |.-----.-----.-----.| | | |.----.| |_
| - || _ | -__| || | | || _|| _|
|_______|| __|_____|__|__||________||__| |____|
|__| W I R E L E S S F R E E D O M
-----------------------------------------------------
CHAOS CALMER (Bleeding Edge, r43860)
-----------------------------------------------------
* 1 1/2 oz Gin Shake with a glassful
* 1/4 oz Triple Sec of broken ice and pour
* 3/4 oz Lime Juice unstrained into a goblet.
* 1 1/2 oz Orange Juice
* 1 tsp. Grenadine Syrup
-----------------------------------------------------
================= FAILSAFE MODE active ================
special commands:
* firstboot reset settings to factory defaults
* mount_root mount root-partition with config files
after mount_root:
* passwd change root's password
* /etc/config directory with config files
for more help see:
http://wiki.openwrt.org/doc/howto/generic.failsafe
=======================================================
root@(none):/# [ 41.940000] random: nonblocking pool is initialized
root@(none):/#
root@(none):/# /sbin/buttons.sh
[GPIO0] value 0
sh: write error: Device or resource busy
/sbin/buttons.sh: line 10: can't create /sys/class/gpio/gpio1/direction: nonexistent directory
cat: can't open '/sys/class/gpio/gpio1/value': N[ 62.040000] rt2880-pinmux pinctrl.1: pin 3 is not set to gpio mux
o such file or d[ 62.060000] rt2880-pinmux pinctrl.1: request() failed for pin 3
irectory
[GPIO1[ 62.080000] rt2880-pinmux pinctrl.1: pin-3 (pio:3) status -22
] value
sh: write error: Invalid argument
sh:[ 62.100000] rt2880-pinmux pinctrl.1: pin 4 is not set to gpio mux
write error: De[ 62.100000] rt2880-pinmux pinctrl.1: request() failed for pin 4
vice or resource[ 62.130000] rt2880-pinmux pinctrl.1: pin-4 (pio:4) status -22
busy
/sbin/buttons.sh: line 10: can't create /[ 62.140000] rt2880-pinmux pinctrl.1: pin 5 is not set to gpio mux
sys/class/gpio/g[ 62.160000] rt2880-pinmux pinctrl.1: request() failed for pin 5
pio2/direction: [ 62.170000] rt2880-pinmux pinctrl.1: pin-5 (pio:5) status -22
nonexistent directory
cat: can't open '/sys/cla[ 62.190000] rt2880-pinmux pinctrl.1: pin 6 is not set to gpio mux
ss/gpio/gpio2/va[ 62.210000] rt2880-pinmux pinctrl.1: request() failed for pin 6
lue': No such fi[ 62.220000] rt2880-pinmux pinctrl.1: pin-6 (pio:6) status -22
le or directory
[GPIO2] value
sh: write error[ 62.240000] rt2880-pinmux pinctrl.1: pin 7 is not set to gpio mux
: Invalid argume[ 62.260000] rt2880-pinmux pinctrl.1: request() failed for pin 7
nt
sh: write er[ 62.270000] rt2880-pinmux pinctrl.1: pin-7 (pio:7) status -22
ror: Invalid argument
/sbin/buttons.sh: line 10[ 62.290000] rt2880-pinmux pinctrl.1: pin 8 is not set to gpio mux
: can't create /[ 62.310000] rt2880-pinmux pinctrl.1: request() failed for pin 8
sys/class/gpio/g[ 62.320000] rt2880-pinmux pinctrl.1: pin-8 (pio:8) status -22
pio3/direction: nonexistent directory
cat: can'[ 62.340000] rt2880-pinmux pinctrl.1: pin 9 is not set to gpio mux
t open '/sys/cla[ 62.360000] rt2880-pinmux pinctrl.1: request() failed for pin 9
ss/gpio/gpio3/va[ 62.370000] rt2880-pinmux pinctrl.1: pin-9 (pio:9) status -22
lue': No such file or directory
[ 62.390000] rt2880-pinmux pinctrl.1: pin 10 is not set to gpio mux
sh: write error[ 62.410000] rt2880-pinmux pinctrl.1: request() failed for pin 10
: Invalid argume[ 62.410000] rt2880-pinmux pinctrl.1: pin-10 (pio:10) status -22
nt
sh: write error: Invalid argument
/sbin/but[ 62.440000] rt2880-pinmux pinctrl.1: pin 11 is not set to gpio mux
tons.sh: line 10[ 62.440000] rt2880-pinmux pinctrl.1: request() failed for pin 11
: can't create /[ 62.440000] rt2880-pinmux pinctrl.1: pin-11 (pio:11) status -22
sys/class/gpio/gpio4/direction: nonexistent dire[ 62.440000] rt2880-pinmux pinctrl.1: pin 12 is not set to gpio mux
ctory
cat: can'[ 62.440000] rt2880-pinmux pinctrl.1: request() failed for pin 12
t open '/sys/cla[ 62.440000] rt2880-pinmux pinctrl.1: pin-12 (pio:12) status -22
[ 62.440000] rt2880-pinmux pinctrl.1: pin 13 is not set to gpio mux
[ 62.440000] rt2880-pinmux pinctrl.1: request() failed for pin 13
sh: write error[ 62.440000] rt2880-pinmux pinctrl.1: pin-13 (pio:13) status -22
: Invalid argument
sh: write error: Invalid arg[ 62.440000] rt2880-pinmux pinctrl.1: pin 14 is not set to gpio mux
ument
/sbin/but[ 62.440000] rt2880-pinmux pinctrl.1: request() failed for pin 14
tons.sh: line 10[ 62.440000] rt2880-pinmux pinctrl.1: pin-14 (pio:14) status -22
: can't create /sys/class/gpio/gpio5/direction: [ 62.440000] rt2880-pinmux pinctrl.1: pin 15 is not set to gpio mux
nonexistent dire[ 62.440000] rt2880-pinmux pinctrl.1: request() failed for pin 15
ctory
cat: can'[ 62.440000] rt2880-pinmux pinctrl.1: pin-15 (pio:15) status -22
t open '/sys/class/gpio/gpio5/value': No such fi[ 62.440000] rt2880-pinmux pinctrl.1: pin 16 is not set to gpio mux
[ 62.440000] rt2880-pinmux pinctrl.1: request() failed for pin 16
[ 62.440000] rt2880-pinmux pinctrl.1: pin-16 (pio:16) status -22
sh: write error: Invalid argument
sh: write er[ 62.440000] rt2880-pinmux pinctrl.1: pin 17 is not set to gpio mux
ror: Invalid arg[ 62.440000] rt2880-pinmux pinctrl.1: request() failed for pin 17
ument
/sbin/but[ 62.770000] rt2880-pinmux pinctrl.1: pin-17 (pio:17) status -22
tons.sh: line 10: can't create /sys/class/gpio/g[ 62.790000] rt2880-pinmux pinctrl.1: pin 18 is not set to gpio mux
pio6/direction: [ 62.810000] rt2880-pinmux pinctrl.1: request() failed for pin 18
nonexistent dire[ 62.810000] rt2880-pinmux pinctrl.1: pin-18 (pio:18) status -22
ctory
cat: can't open '/sys/class/gpio/gpio6/va[ 62.840000] rt2880-pinmux pinctrl.1: pin 19 is not set to gpio mux
lue': No such fi[ 62.860000] rt2880-pinmux pinctrl.1: request() failed for pin 19
[ 62.860000] rt2880-pinmux pinctrl.1: pin-19 (pio:19) status -22
[GPIO6] value
sh: write error: Invalid argume[ 62.890000] rt2880-pinmux pinctrl.1: pin 20 is not set to gpio mux
nt
sh: write er[ 62.910000] rt2880-pinmux pinctrl.1: request() failed for pin 20
ror: Invalid arg[ 62.910000] rt2880-pinmux pinctrl.1: pin-20 (pio:20) status -22
ument
/sbin/buttons.sh: line 10: can't create /[ 62.940000] rt2880-pinmux pinctrl.1: pin 21 is not set to gpio mux
sys/class/gpio/g[ 62.960000] rt2880-pinmux pinctrl.1: request() failed for pin 21
pio7/direction: [ 62.960000] rt2880-pinmux pinctrl.1: pin-21 (pio:21) status -22
nonexistent directory
cat: can't open '/sys/cla[ 62.990000] rt2880-pinmux pinctrl.1: pin 22 is not set to gpio mux
ss/gpio/gpio7/va[ 63.010000] rt2880-pinmux pinctrl.1: request() failed for pin 22
lue': No such fi[ 63.010000] rt2880-pinmux pinctrl.1: pin-22 (pio:22) status -22
le or directory
[GPIO7] value
sh: write error[ 63.040000] rt2880-pinmux pinctrl.1: pin 23 is not set to gpio mux
: Invalid argume[ 63.060000] rt2880-pinmux pinctrl.1: request() failed for pin 23
nt
sh: write er[ 63.060000] rt2880-pinmux pinctrl.1: pin-23 (pio:23) status -22
ror: Invalid argument
/sbin/buttons.sh: line 10: can't create /sys/class/gpio/gpio8/direction: nonexistent directory
cat: can't open '/sys/class/gpio/gpio8/value': No such file or directory
[GPIO8] value
sh: write error: Invalid argument
sh: write error: Invalid argument
/sbin/buttons.sh: line 10: can't create /sys/class/gpio/gpio9/direction: nonexistent directory
cat: can't open '/sys/class/gpio/gpio9/value': No such file or directory
[GPIO9] value
sh: write error: Invalid argument
sh: write error: Invalid argument
/sbin/buttons.sh: line 10: can't create /sys/class/gpio/gpio10/direction: nonexistent directory
cat: can't open '/sys/class/gpio/gpio10/value': No such file or directory
[GPIO10] value
sh: write error: Invalid argument
sh: write error: Invalid argument
/sbin/buttons.sh: line 10: can't create /sys/class/gpio/gpio11/direction: nonexistent directory
cat: can't open '/sys/class/gpio/gpio11/value': No such file or directory
[GPIO11] value
sh: write error: Invalid argument
sh: write error: Invalid argument
/sbin/buttons.sh: line 10: can't create /sys/class/gpio/gpio12/direction: nonexistent directory
cat: can't open '/sys/class/gpio/gpio12/value': No such file or directory
[GPIO12] value
sh: write error: Invalid argument
sh: write error: Invalid argument
/sbin/buttons.sh: line 10: can't create /sys/class/gpio/gpio13/direction: nonexistent directory
cat: can't open '/sys/class/gpio/gpio13/value': No such file or directory
[GPIO13] value
sh: write error: Invalid argument
sh: write error: Invalid argument
/sbin/buttons.sh: line 10: can't create /sys/class/gpio/gpio14/direction: nonexistent directory
cat: can't open '/sys/class/gpio/gpio14/value': No such file or directory
[GPIO14] value
sh: write error: Invalid argument
sh: write error: Invalid argument
/sbin/buttons.sh: line 10: can't create /sys/class/gpio/gpio15/direction: nonexistent directory
cat: can't open '/sys/class/gpio/gpio15/value': No such file or directory
[GPIO15] value
sh: write error: Invalid argument
sh: write error: Invalid argument
/sbin/buttons.sh: line 10: can't create /sys/class/gpio/gpio16/direction: nonexistent directory
cat: can't open '/sys/class/gpio/gpio16/value': No such file or directory
[GPIO16] value
sh: write error: Invalid argument
sh: write error: Invalid argument
/sbin/buttons.sh: line 10: can't create /sys/class/gpio/gpio17/direction: nonexistent directory
cat: can't open '/sys/class/gpio/gpio17/value': No such file or directory
[GPIO17] value
sh: write error: Invalid argument
sh: write error: Invalid argument
/sbin/buttons.sh: line 10: can't create /sys/class/gpio/gpio18/direction: nonexistent directory
cat: can't open '/sys/class/gpio/gpio18/value': No such file or directory
[GPIO18] value
sh: write error: Invalid argument
sh: write error: Invalid argument
/sbin/buttons.sh: line 10: can't create /sys/class/gpio/gpio19/direction: nonexistent directory
cat: can't open '/sys/class/gpio/gpio19/value': No such file or directory
[GPIO19] value
sh: write error: Invalid argument
sh: write error: Invalid argument
/sbin/buttons.sh: line 10: can't create /sys/class/gpio/gpio20/direction: nonexistent directory
cat: can't open '/sys/class/gpio/gpio20/value': No such file or directory
[GPIO20] value
sh: write error: Invalid argument
sh: write error: Invalid argument
/sbin/buttons.sh: line 10: can't create /sys/class/gpio/gpio21/direction: nonexistent directory
cat: can't open '/sys/class/gpio/gpio21/value': No such file or directory
[GPIO21] value
sh: write error: Invalid argument
sh: write error: Invalid argument
/sbin/buttons.sh: line 10: can't create /sys/class/gpio/gpio22/direction: nonexistent directory
cat: can't open '/sys/class/gpio/gpio22/value': No such file or directory
[GPIO22] value
sh: write error: Invalid argument
sh: write error: Invalid argument
/sbin/buttons.sh: line 10: can't create /sys/class/gpio/gpio23/direction: nonexistent directory
cat: can't open '/sys/class/gpio/gpio23/value': No such file or directory
[GPIO23] value
sh: write error: Invalid argument
root@(none):/#
There is a lot of noise but apparently the important message is on stdout, let us redirect stdout to a file and ignore the rest.
# /sbin/buttons.sh >/tmp/buttons_off.txt
Repeat while keeping the "Reset" pin pressed with a paper clip
# /sbin/buttons.sh >/tmp/buttons_reset_pressed.txt
Then compare the results (we have no diff so let us use ls and md5sum)
root@(none):/# diff -u /tmp/buttons_off.txt /tmp/buttons_reset_pressed.txt
ash: diff: not found
root@(none):/# ls -la /tmp/buttons_off.txt /tmp/buttons_reset_pressed.txt
-rw-r--r-- 1 root root 375 Jan 1 00:10 /tmp/buttons_off.txt
-rw-r--r-- 1 root root 375 Jan 1 00:10 /tmp/buttons_reset_pressed.txt
root@(none):/# md5sum /tmp/buttons_off.txt /tmp/buttons_reset_pressed.txt
fc4a160a97402ee443b730ab82745986 /tmp/buttons_off.txt
fc4a160a97402ee443b730ab82745986 /tmp/buttons_reset_pressed.txt
root@(none):/#
Contents of each file
root@(none):/# cat /tmp/buttons_off.txt
[GPIO0] value 0
[GPIO1] value
[GPIO2] value
[GPIO3] value
[GPIO4] value
[GPIO5] value
[GPIO6] value
[GPIO7] value
[GPIO8] value
[GPIO9] value
[GPIO10] value
[GPIO11] value
[GPIO12] value
[GPIO13] value
[GPIO14] value
[GPIO15] value
[GPIO16] value
[GPIO17] value
[GPIO18] value
[GPIO19] value
[GPIO20] value
[GPIO21] value
[GPIO22] value
[GPIO23] value
root@(none):/#
Inspecting /sys/class/gpio
root@(none):/# ls -la /sys/class/gpio/
drwxr-xr-x 2 root root 0 Jan 1 00:03 .
drwxr-xr-x 19 root root 0 Jan 1 00:00 ..
--w------- 1 root root 4096 Jan 1 00:03 export
lrwxrwxrwx 1 root root 0 Jan 1 00:03 gpiochip0 -> ../../devices/10000000.palmbus/10000600.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jan 1 00:03 gpiochip24 -> ../../devices/10000000.palmbus/10000638.gpio/gpio/gpiochip24
lrwxrwxrwx 1 root root 0 Jan 1 00:03 gpiochip40 -> ../../devices/10000000.palmbus/10000660.gpio/gpio/gpiochip40
lrwxrwxrwx 1 root root 0 Jan 1 00:03 gpiochip72 -> ../../devices/10000000.palmbus/10000688.gpio/gpio/gpiochip72
--w------- 1 root root 4096 Jan 1 00:03 unexport
root@(none):/#
$ cd build.local/20150111-1715-ldpinney_latest_files/
$ md5sum openwrt-ramips-mt7620-mlwg2-squashfs-sysupgrade.bin
c5fb8e44af71640a31e427d3e569aa6c openwrt-ramips-mt7620-mlwg2-squashfs-sysupgrade.bin
$
LuCI: System > Backup / Flash Firmware
- Keep settings: Yes
- Image: openwrt-ramips-mt7620-mlwg2-squashfs-sysupgrade.bin
Then select "Flash image..."
Verify chechsum, then select "Proceed"
When writing flash is complete the device will reboot and the new image will be loaded.
BusyBox v1.22.1 (2015-01-11 06:16:20 CST) built-in shell (ash)
Enter 'help' for a list of built-in commands.
_______ ________ __
| |.-----.-----.-----.| | | |.----.| |_
| - || _ | -__| || | | || _|| _|
|_______|| __|_____|__|__||________||__| |____|
|__| W I R E L E S S F R E E D O M
-----------------------------------------------------
CHAOS CALMER (Bleeding Edge, r43927)
-----------------------------------------------------
* 1 1/2 oz Gin Shake with a glassful
* 1/4 oz Triple Sec of broken ice and pour
* 3/4 oz Lime Juice unstrained into a goblet.
* 1 1/2 oz Orange Juice
* 1 tsp. Grenadine Syrup
-----------------------------------------------------
root@OpenWrt:/#
TODO