Having MIT as alternative is sometimes preferred by upstream maintainers
and allows sharing that simple code with other projects. We don't really
want multiple DTS versions for the same device.
Signed-off-by: Petr Štetiar <ynezz@true.cz>
The previous offset was invalid and pointed to the end of the partition,
which was causing issues with mt76
Signed-off-by: Felix Fietkau <nbd@nbd.name>
The 5GHz radio of this device uses an mt7610e PCI-E chip, which has
been recently started to be supported.
mt76x0e 0000:01:00.0: card - bus=0x1, slot = 0x0 irq=4
mt76x0e 0000:01:00.0: ASIC revision: 76100002
mt76x0e 0000:01:00.0: Firmware Version: 0.1.00
mt76x0e 0000:01:00.0: EEPROM ver:01 fae:00
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Specify firmware partition format to denx,uimage in compatible DTS property.
2 uimage-fw partitions found on MTD device firmware
Creating 2 MTD partitions on "firmware":
0x000000000000-0x00000017f72b : "kernel"
0x00000017f72b-0x000000f70000 : "rootfs"
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Flash partitions were moved under partition table node, but addition of
compatible property was omitted which lead to following boot failure:
VFS: Cannot open root device "(null)" or unknown-block(0,0): error -6
Please append a correct "root=" boot option; here are the available partitions:
1f00 16384 mtdblock0
(driver?)
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
Fixes: e4d9217f (ramips: improve BDCOM WAP2100-SK support)
Signed-off-by: Petr Štetiar <ynezz@true.cz>
The 5 GHz radio of this device uses an mt7610e pci-e chip, which has
been recently added support.
Tested on the actual device as AP and client, TCP throughput ~90 Mbps
U/D.
Signed-off-by: Roger Pueyo Centelles <roger.pueyo@guifi.net>
Add support for UniElec U7621-06 variant with 512MB RAM and 64MB flash.
Additional specs are below:
CPU: MT7621 (880Mhz)
Bootloader: Ralink U-Boot
Flash: 64MB
- U-Boot identifies as Macronix MX66L51235F
- kernel identifies as MX66L51235l (65536 Kbytes)
RAM: 512MB
Rest of the details as per commit 46ab81e405 ("ramips add support for
UniElec U7621-06")
Signed-off-by: Nishant Sharma <nishant@unmukti.in>
[use generic board detection, add firmware partition compatible, extend
firmware partition to use all of the remaining flash space, add a
maximum image size matching the firmware partition size]
Signed-off-by: Mathias Kresin <dev@kresin.me>
The RavPower WD03 is a mt7620n based baord. With the change applied, I2C
should work now with the RavPower WD03.
Signed-off-by: Matthias Badaire <mbadaire@gmail.com>
[reworded commit message]
Signed-off-by: Mathias Kresin <dev@kresin.me>
With ed25e3ac02 ("ramips: fix some clocks in mt7621.dtsi") the
cpuclock node was dropped from the mt7621.dtsi without removing the
references to this node from the GB-PC1/PC2 dts files.
Remove them now, to fix the build error.
Signed-off-by: Mathias Kresin <dev@kresin.me>
It has to be <board>:<colour>:<function> and is expected exactly this
way by the userspace scripts.
While at it, fix some whitespace issues in the dts file and rename the
flash node as required upstream.
Signed-off-by: Mathias Kresin <dev@kresin.me>
Use the generic board detection instead of the target specific one as
all recent additions are doing.
Setup the USB led via devicetree (a58535771f) and include the required
driver by default. Merge the led userspace setting with an existing
identical case.
Use the wps led for boot status indication.
Move the partitions into a partition table node (6031ab345d) and drop
needless labels. Drop misplaced cells properties (53624c1702).
Cleanup the pinmux and only switch pins to gpio functions which a
referenced as gpio in the dts.
Match the maximum image size with the size of the firmware partition.
Signed-off-by: Mathias Kresin <dev@kresin.me>
The sd function of the nd_sd group configures two of the groups pins as
gpios. The pins are used as PCIe reset/power.
Due to the driver load order, the pins are configured way to late if
triggered by the sd-card driver.
To not introduce another kind of driver load order dependency and
configure the pins as early as possible, means during pinmux driver
load.
Signed-off-by: Mathias Kresin <dev@kresin.me>
This reverts commit dcdc6d9dad.
Even if described this way in the datasheet, it causes a bootloop on a
RT-N56U (v1):
of-flash 1c000000.nor-flash: do_map_probe() failed for type cfi_probe
of-flash 1c000000.nor-flash: do_map_probe() failed
VFS: Cannot open root device “(null)” or unknown-block(0,0): error -6
Fixes: FS#1930
Signed-off-by: Mathias Kresin <dev@kresin.me>
Use the generic board detection instead of the target specific one as
all recent additions are doing.
Add the wireless led according the gpio number from the datasheet.
Rename the board part of the leds to match the name used for the
compatible string. Finally, do not hijack the wps led for boot status
indication longer than necessary.
Merge userspace config into existing cases.
Include the manufacture Name in the dts model string.
Signed-off-by: Mathias Kresin <dev@kresin.me>
The Lava LR-25G001 Wireless Router is based on the MT7620A SoC.
Specification:
- MediaTek MT7620A (580 Mhz)
- 64 MB of RAM
- 16 MB of FLASH
- 1x 802.11bgn radio
- 1x 802.11ac radio (MT7610EN)
- 5x 10/100/1000 Mbps AR8337 Switch (1 WAN AND 4 LAN)
- 2x external, detachable antennas
- 1x USB 2.0
- UART (J3) header on PCB (57600 8n1)
- 8x LED (3x GPIO-controlled), 2x button
- JBOOT bootloader
Known issues:
- Work only three Gigabit ports (3/5, 1 WAN and 2LAN)
Installation:
Apply factory image via http web-gui or JBOOT recovery page
How to revert to OEM firmware:
- push the reset button and turn on the power. Wait until LED start
blinking (~10sec.)
- upload original factory image via JBOOT http (IP: 192.168.123.254)
Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
For a long time the mt7621 uses a fixed cpu clock which causes a problem
if the cpu frequency is not 880MHz.
This patch fixes the cpu clock calculation and adds the cpu/bus clkdev
which will be used in dts.
Signed-off-by: Weijie Gao <hackpascal@gmail.com>
The memc node from mt7621.dtsi has incorrect register resource.
Fix it according to the programming guide.
Signed-off-by: Weijie Gao <hackpascal@gmail.com>
Introduce mt76x0e device tree node in RT-AC51U dts.
Define mt76x0e mtd partition and offset
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
On the bottom sticker it's branded as ZTE ZXECS EBG3130 device, but in factory
OpenWrt image it's referenced as BDCOM WAP2100-SK device.
Specifications:
- SoC: MediaTek MT7620A
- RAM: 128 MB
- Flash: 16 MB
- Ethernet: 5 FE ports
- Wireless radio: 2T2R 2.4 GHz and 1T1R 5 GHz (MT7610EN, unsupported)
- UART: 1 x UART on PCB marked as J2 (R=RX, T=TX, G=GND) with 115200 8N1 config
- LEDs: Power, FE ports 1-5, WPS, USB, RF 2.4G, RF 5G
- Other: USB port, SD card slot and 2x external antennas (non-detachable)
Flashing instructions:
A) The U-Boot has HTTP based firmware upgrade
A1) Flashing notes
We've identified so far two different batches of units, unfortunately
each batch has different U-Boot bootloader flashed with different
default environment variables, thus each batch has different IP address
for accessing web based firmware updater.
* First batch has web based bootloader IP address 1.1.1.1
* Second batch has web based bootloader IP address 192.168.1.250
In case you can't connect to either of those IPs, you can try to get
the default IP address via two methods:
A1.1) Serial console, then the IP address is visible during the boot
...
HTTP server is starting at IP: 1.1.1.1
raspi_read: from:40004 len:6
HTTP server is ready!
...
A1.2) Over telnet/SSH using this command:
root@bdcom:/# grep ipaddr= /dev/mtd0
ipaddr=1.1.1.1
A2) Flashing with browser
* Change IP address of PC to 1.1.1.2 with 255.255.255.0 netmask
* Reboot the device and try to reach web based bootloader in the
browser with the following URL http://1.1.1.1
* Quickly select the firmware sysupgrade file and click on the
`Update firmware` button, this all has to be done within 10 seconds,
bootloader doesn't wait any longer
If done correctly, the web page should show UPDATE IN PROGRESS page
with progress indicator. Once the flashing completes (it takes roughly
around 1 minute), the device will reboot to the OpenWrt firmware
A3) Flashing with curl
sudo ip addr add 1.1.1.2/24 dev eth0
curl \
--verbose \
--retry 3 \
--retry-delay 1 \
--retry-max-time 30 \
--connect-timeout 30 \
--form "firmware=@openwrt-ramips-mt7620-BDCOM-WAP2100-SK-squashfs-sysupgrade.bin" \
http://1.1.1.1
Now power on the router.
B) The U-boot is based on Ralink SDK so we can flash the firmware using UART.
1. Configure PC with a static IP address and setup an TFTP server.
2. Put the firmware into the tftp directory.
3. Connect the UART line as described on the PCB (G=GND, R=RX, T=TX)
4. Power up the device and press 2, follow the instruction to set device and
tftp server IP address and input the firmware file name. U-boot will then load
the firmware and write it into the flash.
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Belkin F5D8235 v2 has two ethernet switches on board.
One internal rt3052 and rtl8366rb on rgmii interface.
Looks like internal switch settings were lost in
translation to device tree infrastructure.
Signed-off-by: Roman Yeryomin <roman@advem.lv>
Specifically, SKW92A_E16, described here:
http://www.skylabmodule.com/wp-content/uploads/SkyLab_SKW92A_V1.04_datasheet.pdf
Specification:
- MediaTek MT7628N/N (580 Mhz)
- 64 MB of RAM
- 16 MB of FLASH
- 2T2R 2.4 GHz
- 5x 10/100 Mbps Ethernet
- 2x u.FL
- Power by micro-USB connector at USB1 on EVB
- UART via micro-USB connector at USB3 on EVB (57600 8n1)
- 5x Ethernet LEDs
- 1x WLAN LEDs
- 1x WPS LED connected by jumper wire from I2S_CK on J20 to WPS_LED pin hole next
to daughter board on EVB
- WPS/Reset button (S2 on EVB)
- RESET button (S1 on EVB) is *not* connected to RST hole next to daughter board
Flash instruction:
>From Skylab firmware:
1. Associate with SKYLAP_AP
2. In a browser, load: http://10.10.10.254/
3. Username/password: admin/admin
4. In web admin interface: Administration / Upload Firmware, browse to
sysupgrade image, apply, flash will fail with a message:
Not a valid firmware. *** Warning: "/var/tmpFW" has corrupted data!
5. Telnet to 10.10.10.254, drops you into a root shell with no credentials
6. # cd /var
7. # mtd_write -r write tmpFW mtd4
Unlocking mtd4 ...
Writing from tmpFW to mtd4 ... [e]
8. When flash has completed, you will have booted into your firmware.
>From U-boot via TFTP and initramfs:
1. Place openwrt-ramips-mt76x8-skw92a-initramfs-kernel.bin on a TFTP server
2. Connect to serial console at USB3 on EVB
3. Connect ethernet between port 1 (not WAN) and your TFTP server (e.g.
192.168.11.20)
4. Start terminal software (e.g. screen /dev/ttyUSB0 57600) on PC
5. Apply power to EVB
6. Interrupt u-boot with keypress of "1"
7. At u-boot prompts:
Input device IP (10.10.10.123) ==:192.168.11.21
Input server IP (10.10.10.3) ==:192.168.11.20
Input Linux Kernel filename (root_uImage) ==:openwrt-ramips-mt76x8-skw92a-initramfs-kernel.bin
8. Move ethernet to port 0 (WAN) on EVB
9. At new OpenWrt console shell, fetch squashfs-sysupgrade image and flash
with sysupgrade.
>From U-boot via TFTP direct flash:
1. Place openwrt-ramips-mt76x8-skw92a-squashfs-sysupgrade.bin on a TFTP server
2. Connect to serial console at USB3 on EVB (57600 8N1)
3. Connect ethernet between port 1 (not WAN) an your TFTP server (e.g.
192.168.11.20)
4. Start terminal software (e.g. screen /dev/ttyUSB0 57600) on PC
5. Apply power to EVB
6. Interrupt u-boot with keypress of "2"
7. At u-boot prompts:
Warning!! Erase Linux in Flash then burn new one. Are you sure?(Y/N) Y
Input device IP (10.10.10.123) ==:192.168.11.21
Input server IP (10.10.10.3) ==:192.168.11.20
Input Linux Kernel filename (root_uImage) ==:openwrt-ramips-mt76x8-skw92a-squashfs-sysupgrade.bin
8. When transfer is complete or as OpenWrt begins booting, move ethernet to
port 0 (WAN).
Signed-off-by: Russell Senior <russell@personaltelco.net>
Release the led used for boot status indication via devicetree instead
of setting a default off trigger in userspace.
Signed-off-by: Mathias Kresin <dev@kresin.me>
Use diag.sh version used for other targets supporting different leds
for the different boot states.
The existing led sequences should be the same as before.
Signed-off-by: Mathias Kresin <dev@kresin.me>
Assign the usbdev trigger via devicetree for all subtargets and drop
the userspace handling of the usb leds.
With the change all usb ports are triggering the usb led instead of
only usb 1.1 XOR usb 2.0 XOR usb 3.0 as it was before.
Signed-off-by: Mathias Kresin <dev@kresin.me>
Since c134210 power LED is no longer lights after boot-up.
Reversing gpio polarity makes it work as it should be.
Signed-off-by: Emil Muratov <gpm@hotplug.ru>
TP-Link TL-MR3020 v3 is a pocket-size router based on MediaTek MT7628N.
This PR is based on the work of @meyergru[1], with his permission.
Specification:
- MediaTek MT7628N/N (575 Mhz)
- 64 MB of RAM
- 8 MB of FLASH
- 2T2R 2.4 GHz
- 1x 10/100 Mbps Ethernet
Flash instruction:
The only way to flash the image in TL-MR3020 v3 is to use
tftp recovery mode in U-Boot:
1. Configure PC with static IP 192.168.0.225/24 and tftp server.
2. Rename "openwrt-ramips-mt76x8-tplink_tl-mr3020-v3-squashfs-tftp-recovery.bin"
to "tp_recovery.bin" and place it in tftp server directory.
3. Connect PC with the LAN port, press the reset button, power up
the router and keep button pressed for around 6-7 seconds, until
device starts downloading the file.
4. Router will download file from server, write it to flash and reboot.
[1] https://github.com/meyergru/lede-source/commits/TL-MR3020-V3
Signed-off-by: Carlo Nel <carlojnel@gmail.com>
Set the pins to the required mode via the pinmux driver. It allows to
get rid of the pinmux related code in the sd card driver.
Signed-off-by: Mathias Kresin <dev@kresin.me>
Drop the nd_sd gpio pinmux in case sdcard is used. They're mutually
exclusive and for most of the boards not even used as GPIOs.
If the pins are in sdcard mode, the pins ND_WE_N and ND_CS_N are still
GPIOs (#45 and #46).
Signed-off-by: Mathias Kresin <dev@kresin.me>
The rt3883 doesn't have a pinmux group named spi_cs1. The cs1 is part
of the pci group. The function pci-func enables the second chip select.
Signed-off-by: Mathias Kresin <dev@kresin.me>
The PCI pins need to be set to "PCI Host support one device" to allow
the use of one PCI device and flash memory.
The pci-fnc function is intended to be used if no PCI is used but
flash, nand or the codec functionality is.
Signed-off-by: Mathias Kresin <dev@kresin.me>
Based on the userspace led configuration it's quite obvious that the
4g-0 led should be used for boot status indication.
Signed-off-by: Mathias Kresin <dev@kresin.me>
Use the default-state property to express the desired led handling in
the devicetree source file instead of the userspace.
Signed-off-by: Mathias Kresin <dev@kresin.me>
All boards either have a multi colour led or a single lightpipe. It
makes it impossible to handle the LEDs individual. Change the LED
config for these boards to take it into account.
Signed-off-by: Mathias Kresin <dev@kresin.me>
- fix single spaces hidden by a tab
- replace indentation with spaces by tabs
- make empty lines empty
- drop trailing whitespace
- drop unnecessary blank lines
Signed-off-by: Mathias Kresin <dev@kresin.me>
Signed-off-by: Paul Wassi <p.wassi@gmx.at>
The mt7620 doesn't have a pinmux group named spi_cs1. The cs1 is part
of the "spi refclk" group. The function "spi refclk" enables the second
chip select.
On reset, the pins of the "spi refclk" group are used as reference
clock and GPIO.
Signed-off-by: Mathias Kresin <dev@kresin.me>
This patch improves faf64056dd by correcting
the partition scheme for the "RouterBoot" section of the flash.
The partition scheme initially submitted is incorrect and does not reflect
the actual flash structure.
The "RouterBoot" section (name matching OEM) is subdivided in several
static segments, as they are on ar71xx RB devices albeit with different
offsets and sizes.
The naming convention from ar71xx has been preserved, except for the
bootloaders which are named "bootloader1" and "bootloader2" to avoid
confusion with the master "RouterBoot" partition.
The preferred 'fixed-partitions' DTS node syntax is used, with nesting
support as introduced in 2a598bbaa3.
"partition" is used for node names, with associated "label" to match
policy set by 6dd94c2781.
Leave a note in DTS to explain how the original author selected the SPI speed.
Tested-by: Tobias Schramm <tobleminer@gmail.com>
Signed-off-by: Thibaut VARÈNE <hacks@slashdirt.org>
Reviewed-by: Rafał Miłecki <rafal@milecki.pl>
This patch improves 5684d08741 by correcting
the partition scheme for the "RouterBoot" section of the flash.
The partition scheme initially submitted is incorrect and does not reflect
the actual flash structure.
The "RouterBoot" section (name matching OEM) is subdivided in several
static segments, as they are on ar71xx RB devices albeit with different
offsets and sizes.
The naming convention from ar71xx has been preserved, except for the
bootloaders which are named "bootloader1" and "bootloader2" to avoid
confusion with the master "RouterBoot" partition.
The preferred 'fixed-partitions' DTS node syntax is used, with nesting
support as introduced in 2a598bbaa3.
"partition" is used for node names, with associated "label" to match
policy set by 6dd94c2781.
The OEM source code also define a "RouterBootFake" partition at the
beginning of the secondary flash chip: to avoid trouble if OEM ever makes
use of that space, it is also defined here.
The resulting partition scheme looks like this:
[ 10.114241] m25p80 spi0.0: w25x40 (512 Kbytes)
[ 10.118708] 1 fixed-partitions partitions found on MTD device spi0.0
[ 10.125049] Creating 1 MTD partitions on "spi0.0":
[ 10.129824] 0x000000000000-0x000000040000 : "RouterBoot"
[ 10.136215] 5 fixed-partitions partitions found on MTD device RouterBoot
[ 10.142894] Creating 5 MTD partitions on "RouterBoot":
[ 10.148032] 0x000000000000-0x00000000f000 : "bootloader1"
[ 10.154336] 0x00000000f000-0x000000010000 : "hard_config"
[ 10.160665] 0x000000010000-0x00000001f000 : "bootloader2"
[ 10.167046] 0x000000020000-0x000000021000 : "soft_config"
[ 10.173461] 0x000000030000-0x000000031000 : "bios"
[ 10.190191] m25p80 spi0.1: w25q128 (16384 Kbytes)
[ 10.194950] 2 fixed-partitions partitions found on MTD device spi0.1
[ 10.201271] Creating 2 MTD partitions on "spi0.1":
[ 10.206071] 0x000000000000-0x000000040000 : "RouterBootFake"
[ 10.212746] 0x000000040000-0x000001000000 : "firmware"
[ 10.307216] 2 minor-fw partitions found on MTD device firmware
[ 10.313044] 0x000000040000-0x000000220000 : "kernel"
[ 10.319002] 0x000000220000-0x000001000000 : "rootfs"
[ 10.324906] mtd: device 9 (rootfs) set to be root filesystem
[ 10.330678] 1 squashfs-split partitions found on MTD device rootfs
[ 10.336886] 0x000000b40000-0x000001000000 : "rootfs_data"
Leave a note in DTS to explain how the original author selected the SPI speed.
Tested-by: Tobias Schramm <tobleminer@gmail.com>
Signed-off-by: Thibaut VARÈNE <hacks@slashdirt.org>
Reviewed-by: Rafał Miłecki <rafal@milecki.pl>
[rmilecki: dropped "RouterBootFake" partition]
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
ELECOM WRC-1900GST is a wireless router, based on Mediatek MT7621A.
This is almost same as WRC-2533GST except wireless specs.
Specifications:
- SoC : MT7621A (four logical CPU cores)
- RAM : 128MiB
- ROM : 16MiB of SPI NOR-FLASH
- wireless :
5GHz : 3T3R up to 1300Mbps/11ac with MT7615
2.4GHz : 3T3R up to 600Mbps/11n with MT7615
- Ethernet : 5 ports, all ports is capable of 1000base-T
- Ether switch : MT7530 (MT7621A built-in)
- LEDs : 4 LEDs
- buttons : 2 buttons and 1 slide-switch
- UART : header is on PCB, 57600bps
Flash instruction using factory image:
1. Connect the computer to the LAN port of WRC-1900GST
2. Connect power cable to WRC-1900GST and turn on it
3. Access to "https://192.168.2.1/" and open firmware update
page ("ファームウェア更新")
4. Select the OpenWrt factory image and click apply ("適用")
button
5. Wait ~150 seconds to complete flashing
Signed-off-by: NOGUCHI Hiroshi <drvlabo@gmail.com>
The former used compatibles aren't defined anywhere and aren't used by
the devicetree source files including them.
Signed-off-by: Mathias Kresin <dev@kresin.me>
According to abbfcc8525 ("ramips: add support for GL-inet
GL-MT300N-V2") the board has a MediaTek MT7628AN. Change the SoC
compatible to match the used hardware.
Signed-off-by: Mathias Kresin <dev@kresin.me>
RT5350 neither have rgmii nor a mdio pinmux group. MT7628an doesn't
have a jtag group. Having these groups defined might cause a boot
panic.
The pin controller fails to initialise for kernels > 4.9 if invalid
groups are used. If a subsystem references a pin controller
configuration node, it can not find this node and errors out. In worst
case it's the SPI driver which errors out and we have no root
filesystem to mount.
Signed-off-by: Mathias Kresin <dev@kresin.me>
The DWR-118-A2 Wireless Router is based on the MT7620A SoC.
Specification:
- MediaTek MT7620A (580 Mhz)
- 128 MB of RAM
- 16 MB of FLASH
- 1x 802.11bgn radio
- 1x 802.11ac radio (MT7612EN)
- 4x 10/100 Mbps Ethernet (1 WAN and 3 LAN)
- 1x 10/100/1000 Mbps Marvell Ethernet PHY (1 LAN)
- 2x external, non-detachable antennas
- 1x USB 2.0
- UART (J1) header on PCB (57600 8n1)
- 7x LED (5x GPIO-controlled), 2x button
- JBOOT bootloader
Known issues:
- GELAN not working
- flash is very slow
The status led has been assigned to the dwr-118-a2:green:internet led.
At the end of the boot it is switched off and is available for other
operation. Work correctly also during sysupgrade operation.
Installation:
Apply factory image via http web-gui or JBOOT recovery page
How to revert to OEM firmware:
- push the reset button and turn on the power. Wait until LED start
blinking (~10sec.)
- upload original factory image via JBOOT http (IP: 192.168.123.254)
Signed-off-by: Cezary Jackiewicz <cezary@eko.one.pl>
Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
HiWiFi "Gee Enjoy1200" HC5861B is a dual-band router based on MediaTek MT7628AN
https://www.hiwifi.com/enjoy-view
Specifications:
- MediaTek MT7628AN 580MHz
- 128 MB DDR2 RAM
- 16 MB SPI Flash
- 2.4G MT7628AN 802.11bgn 2T2R 300Mbps
- 5G MT7612EN 802.11ac 2T2R 867Mbps
- 5x 10/100 Mbps Ethernet
Flash instruction:
1. Get SSH access to the router
2. SSH to router with `ssh -p 1022 root@192.168.199.1`, The SSH password is the same as the webconfig one
3. Upload OpenWrt sysupgrade firmware into the router's `/tmp` folder with SCP
4. Run `mtd write /tmp/<filename> firmware`
5. reboot
Everything is working
Signed-off-by: Deng Qingfang <dengqf6@mail2.sysu.edu.cn>
