This commit adds support for following wireless routers:
- Rostelecom RT-FL-1 (Serсomm RT-FL-1)
- Rostelecom S1010 (Serсomm S1010.RT)
The devices are almost identical and the only difference is one bit in the
factory image PID (thanks to Maximilian Weinmann <x1@disroot.org>
(@MaxS0niX) for the info and idea to make one PR for two devices at once).
Devices specification
---------------------
SoC: MediaTek MT7620A, MIPS
RAM: 64 MB
Flash: 16 MB SPI NOR
Wireless 2.4: MT7620 (b/g/n, 2x2)
Wireless 5: MT7612EN (a/n/ac, 2x2)
Ethernet: 5xFE (WAN, LAN1-4)
BootLoader: U-Boot
Buttons: 2 (wps, reset)
LEDs: 1 amber and 1 green status GPIO leds
5 green ethernet GPIO leds
1 green GPIO 2.4 GHz WLAN led
1 green PHY 5 GHz WLAN led
1 green unmanaged power led
USB ports: No
Power: 12 VDC, 1 A
Connector: Barrel
OEM easy installation
---------------------
1. Remove all dots from the factory image filename (except the dot
before file extension)
2. Upload and update the firmware via the original web interface
3. Wait until green status led stops blinking (can take several minutes)
4. Login to OpenWrt initramsfs. It's recommended to make a backup of the
mtd partitions at this point.
4. Perform sysupgrade using the following command (or use Luci):
sysupgrade -n sysupgrade.bin
5. Wait until green status les stops blinking (can take several minutes)
6. Mission acomplished
Return to Stock
---------------
Option 1. Restore firmware Slot1 from a backup (firmware2.bin):
cd /tmp
mtd -e Firmware2 write firmware2.bin Firmware2
printf 1 | dd bs=1 seek=$((0x18007)) count=1 of=/dev/mtdblock2
reboot
Option 2. Decrypt, ungzip and split stock firmware image into the parts,
take Slot1 parts (kernel2.bin, rootfs2.bin) and write them:
cd /tmp
mtd -e Kernel2 write kernel2.bin Kernel2
mtd -e RootFS2 write rootfs2.bin RootFS2
printf 1 | dd bs=1 seek=$((0x18007)) count=1 of=/dev/mtdblock2
reboot
More about stock firmware decryption:
Link: https://github.com/Psychotropos/sercomm_fwutils/
Debricking
----------
Use sercomm-recovery tool. You can use "ALL" mtd partition backup as a
recovery image.
Link: https://github.com/danitool/sercomm-recovery
MAC addresses
-------------
+---------+-------------------+-----------+
| | MAC | Algorithm |
+---------+-------------------+-----------+
| label | 48:3e:xx:xx:xx:1e | label |
| LAN | 48:3e:xx:xx:xx:1e | label |
| WAN | 48:3e:xx:xx:xx:28 | label+10 |
| WLAN 2g | 48:3e:xx:xx:xx:20 | label+2 |
| WLAN 5g | 48:3e:xx:xx:xx:24 | label+6 |
+---------+-------------------+-----------+
Co-authored-by: Vadzim Vabishchevich <bestmc2009@gmail.com>
Signed-off-by: Mikhail Zhilkin <csharper2005@gmail.com>
ALFA Network R36M-E4G is a dual-SIM, N300 Wi-Fi, compact size platform
based on MediaTek MT7620A WiSoC. This product is designed for operation
with 4G modem (can be bought in bundle with Quectel EC25, EG25 or EP06)
but supports also Wi-Fi modules (miniPCIe slot has USB and PCIe buses).
Specification:
- MT7620A (580 MHz)
- 64/128/256 MB of RAM (DDR2)
- 16/32+ MB of FLASH (SPI NOR)
- 2x 10/100 Mbps Ethernet, with passive PoE support (24 V)
- 2T2R 2.4 GHz (MT7620A), with ext. LNA (RFFM4227)
- 1x miniPCIe slot (with PCIe and USB 2.0 buses and optional 5 V)
- 2x SIM slot (mini, micro) with detect and switch driven by GPIO
- 2x u.fl antenna connectors (for Wi-Fi)
- 8x LED (7 driven by GPIO)
- 2x button (reset, wifi)
- 2x UART (4-pin/2.54 mm pitch, 10-pin/1.27 mm pitch) headers on PCB
- 1x I2C (4-pin, 1.27 mm pitch) header on PCB
- 1x LED (8-pin, 1.27 mm pitch) header on PCB
- 1x DC jack with lock (12 V)
Other:
- there is a dedicated, 4-pin connector for optional RTC module (Holtek
HT138x) with 'enable' input, not available at the time of preparing
support for this board
- miniPCIe slot supports additional 5 V supply on pins 47 and 49 but a
jumper resistor (R174) is not installed by default
- U-Boot selects default SIM slot, based on value of 'default_sim' env
variable: '1' or unset -> SIM1 (mini), '2' -> SIM2 (micro). This will
work only if both slots are occupied, otherwise U-Boot will always
select slot with SIM card inside (user can override it later, in
user-space)
- U-Boot resets the modem, using PERSTn signal, before starting kernel
- this board supports 'dual image' feature (controlled by 'dual_image'
U-Boot environment variable)
Flash instruction:
You can use the 'sysupgrade' image directly in vendor firmware which is
based on OpenWrt (make sure to not preserve settings - use 'sysupgrade
-n -F ...' command). Alternatively, use web recovery mode in U-Boot:
1. Power the device with reset button pressed, the modem LED will start
blinking slowly and after ~3 seconds, when it starts blinking faster,
you can release the button.
2. Setup static IP 192.168.1.2/24 on your PC.
3. Go to 192.168.1.1 in browser and upload 'sysupgrade' image.
Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>
New U-Boot version for MediaTek MT76x8/MT762x based ALFA Network boards
includes support for a 'dual image' feature. Users can enable it using
U-Boot environment variable 'dual_image' ('1' -> enabled).
When 'dual image' feature is enabled, U-Boot will modify DTB and divide
the original 'firmware' flash area into two, equal in size and aligned
to 64 KB partitions: 'firmware' and 'backup'. U-Boot will also adjust
size of 'firmware' area to match installed flash chip size.
U-Boot will load kernel from active partition which is marked with env
variable 'bootactive' ('1' -> first partition, '2' -> second partition)
and rename both partitions accordingly ('firmware' <-> 'backup').
There are 3 additional env variables used to control 'dual image' mode:
- bootlimit - maximum number of unsuccessful boot tries (default: '3')
- bootcount - current number of boot tries
- bootchanged - flag which informs that active partition was changed; if
it is set and 'bootcount' reaches 'bootlimit' value,
U-Boot will start web-based recovery which then updates
both partitions with provided image
Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>
While most of the target's contents are split into subtargets, the
base-files are maintained for the target as a whole.
However, OpenWrt already implements a mechanism that will use (and
even prefer) files in the subtargets' directories. This can be
exploited to make several scripts subtarget-specific and thus save
some space.
In certain cases, keeping files in parent (=target) base-files was
more convenient, and thus no splitting was performed for those.
Note that this will increase overall code lines, but reduce code
per subtarget.
base-files ipk size reduction:
master (mt7621) 60958 B
split (mt7620) 46358 B (- 14.3 kiB)
split (mt7621) 48759 B (- 11.9 kiB)
split (mt76x8) 44948 B (- 15.6 kiB)
split (rt288x) 43508 B (- 17.0 kiB)
split (rt305x) 45616 B (- 15.0 kiB)
split (rt3883) 44176 B (- 16.4 kiB)
Run-tested on:
GL.iNet GL-MT300N-V2 (mt76x8)
D-Link DWR-116 (mt7620)
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
