One user reported that his SIMAX1800T couldn't boot like the others. After
debugging, I found that this was caused by the disabled PCIe port. I cannot
reproduce this issue on my SIMAX1800T. But when I disabled pcie2 on the
ASUS RT-AC57U, I got the same result.
It seems that disabling these unused PCIe ports on some mt7621 revisions
will cause PCIe to fail to initialize. So we'd better to re-enable them on
all related mt7621 devices.
Signed-off-by: Shiji Yang <yangshiji66@qq.com>
1. Use ARTIFACTS to build factory image. This change allows users to
generate initramfs factory image using OpenWrt ImageBuilder.
2. Override the default bootargs property defined in "mt7621.dtsi".
Although we use the "bootargs-override" property to set bootargs,
the default "bootargs" property will still be written into the
device tree, so it is better to override it.
Tested on SIM SIMAX1800T
Signed-off-by: Shiji Yang <yangshiji66@qq.com>
SIM AX18T and Haier HAR-20S2U1 Wi-Fi6 AX1800 routers are designed based
on Tenbay WR1800K. They have the same hardware circuits and u-boot.
SIM AX18T has three carrier customized models: SIMAX1800M (China Mobile),
SIMAX1800T (China Telecom) and SIMAX1800U (China Unicom). All of these
models run the same firmware.
Specifications:
SOC: MT7621 + MT7905 + MT7975
ROM: 128 MiB
RAM: 256 MiB
LED: status *3 R/G/B
Button: reset *1 + wps/mesh *1
Ethernet: lan *3 + wan *1 (10/100/1000Mbps)
TTL Baudrate: 115200
TFTP Server: 192.168.1.254
TFTP IP: 192.168.1.28 or 192.168.1.160 (when envs is broken)
MAC Address:
use address source
label 30:xx:xx:xx:xx:62 wan
lan 30:xx:xx:xx:xx:65 factory.0x8004
wan 30:xx:xx:xx:xx:62 factory.0x8004 -3
wlan2g 30:xx:xx:xx:xx:64 factory.0x0004
wlan5g 32:xx:xx:xx:xx:64 factory.0x0004 set 7th bit
TFTP Installation (initramfs image only & recommend):
1. Set local tftp server IP: 192.168.1.254 and NetMask: 255.255.255.0
2. Rename initramfs-kernel.bin to "factory.bin" and put it in the root
directory of the tftp server. (tftpd64 is a good choice for Windows)
3. Start the TFTP server, plug in the power supply, and wait for the
system to boot.
4. Backup "firmware" partition and rename it to "firmware.bin", we need
it to back to stock firmware.
5. Use "fw_printenv" command to list envs.
If "firmware_select=2" is observed then set u-boot enviroment:
/# fw_setenv firmware_select 1
6. Apply sysupgrade.bin in OpenWrt LuCI.
Web UI Installation:
1. Apply update by uploading initramfs-factory.bin to the web UI.
2. Use "fw_printenv" command to list envs.
If "firmware_select=2" is observed then set u-boot enviroment:
/# fw_setenv firmware_select 1
3. Apply squashfs-sysupgrade.bin in OpenWrt LuCI.
Recovery to stock firmware:
a. Upload "firmware.bin" to OpenWrt /tmp, then execute:
/# mtd -r write /tmp/firmware.bin firmware
b. We can also write factory image "UploadBrush-bin.img" to firmware
partition to recovery. Upload image file to /tmp, then execute:
/# mtd erase firmware
/# mtd -r write /tmp/UploadBrush-bin.img firmware
How to extract stock firmware image:
Download stock firmware, then use openssl:
openssl aes-256-cbc -d -salt -in [Downloaded_Firmware] \
-out "firmware.tar.tgz" -k QiLunSmartWL
Signed-off-by: Chen Minqiang <ptpt52@gmail.com>
Signed-off-by: Shiji Yang <yangshiji66@qq.com>
