David Yang b00a02aaa0 ramips: add support for Netgear PR2000 ... This patch adds support for Netgear PR2000, sold as "Travel Router and Range Extender". Specifications: -------------- * SoC: Mediatek MT7620N * RAM: 64MB DDR2 * Flash: 16MB SPI NOR flash (Macronix MX25L12805D) * WiFi 2.4GHz: builtin * Ethernet: builtin * LED: Power, Internet, WiFi, USB * Buttons: Reset (GPIO 1/2) * UART: Serial console (57600 8n1) * USB: 1 x USB2 SPECIAL NOTES: ------------- Problem: WiFi is super weak, but SSID beacons seems to be right. Solve: Change 36h in factory partition (namely 0xf60036) to be 0x0. Explain: Clearly Netgear have different ideas on how EEPROM is used. Bit 2 of 36h indicates the presence of External LNA for 11g (2.4 GHz) band, which seems to be incorrectly set by Netgear (originally 0x04). Lifting it solves the problem of weak RX signal. Installation: ------------ There are two possible ways to install the firmware. Flashing via web interface of original firmware is not tested due to a broken firmware. 1) Open the shell and use a UART2USB convert to gain TTY access (TP7: RXD, TP9: TXD, TP10: GND). Please notice you have to remove resistance R54 next to TP7 otherwise you won't be able to input anything. 2) Use well-known Netgear debug switch. Access http://192.168.168.1/setup.cgi?todo=debug to start telnet service (username: root, password: <none>). Please back up firmware if you want to go back to the original. After you can control the device, flash the firmware as usual. Here are some hints for that. Option 1 (via nmrpflash): 1) Download nmrpflash from https://github.com/jclehner/nmrpflash 2) Use *-factory.img and flash: nmrpflash -L nmrpflash -i net* -f <your-firmware-name> 3) Turn off then turn on the device, wait it finishing flash. Option 2 (replacing u-boot via breed): 1) Download breed-mt7620-reset1.bin from https://breed.hackpascal.net/ 2) Setup HTTP server on your computer, for example: python3 -m http.server You can skip this step if your breed is already accessible from HTTP, since the original wget does not support HTTPS. 3) Connect to the route and flash breed: cd /tmp wget http://<your-computer-host>/breed-mt7620-reset1.bin dd if=breed-mt7620-reset1.bin of=/dev/mtdblock0 bs=64k 4) Reboot. Hold reset key or press any key in TTY to enter breed. 5) Access breed web interface (http://192.168.1.1/). Choose memory layout to be 0x40000 and flash new firmware. Remark: ------ As a "Range Extender", it has a switch to switch between Wired mode (GPIO 21 low) and Wireless mode (GPIO 20 low), which is not implemented in this patch. However, the router will be turned off when it switches to the middle, which makes this switch much less useful. MAC addresses: ------------- The OEM firmware uses one single MAC for all interfaces, located at 0xf700b0. Signed-off-by: David Yang <mmyangfl@gmail.com>		2022-08-06 19:58:46 +02:00
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etc	ramips: add support for Netgear PR2000	2022-08-06 19:58:46 +02:00
lib/upgrade	ramips: add support for ALFA Network R36M-E4G	2019-11-13 21:45:31 +01:00