1 Commits

Author	SHA1	Message	Date
Mikhail Zhilkin	1a35edfbdb	ramips: add basic support for TP-Link EC330-G5u v1 ... This adds basic support for TP-Link EC330-G5u Ver:1.0 router (also known as TP-Link Archer C9ERT). Device specification -------------------- SoC Type: MediaTek MT7621AT RAM: 128 MiB, Nanya NT5CC64M16GP-DI Flash: 128 MiB NAND, ESMT F59L1G81MA-25T Wireless 2.4 GHz (MediaTek MT7615N): b/g/n, 4x4 Wireless 5 GHz (MediaTek MT7615N): a/n/ac, 4x4 Ethernet: 5xGbE (WAN, LAN1, LAN2, LAN3, LAN4) USB ports: 1xUSB3.0 Button: 4 (Led, WiFi On/Off, Reset, WPS) LEDs: 7 blue LEDs, 1 orange(amber) LED, 1 white(non-gpio) LED Power: 12 VDC, 2 A Connector type: Barrel Bootloader: First U-Boot (1.1.3), Main U-Boot (1.1.3). Additionally, original TP-Link firmware contains Image U-Boot (1.1.3). Serial console (UART) --------------------- V +-------+-------+-------+-------+ | +3.3V | GND | TX | RX | +---+---+-------+-------+-------+ | J2 | +--- Don't connect Installation ------------ 1. Rename OpenWrt initramfs image to test.bin and place it on tftp server with IP 192.168.0.5 2. Attach UART, switch on the router and interrupt the boot process by pressing 't' 3. Load and run OpenWrt initramfs image: tftpboot bootm 4. Once inside OpenWrt, switch to the first boot image: fw_setenv BootImage 0 5. Run 'sysupgrade -n' with the sysupgrade OpenWrt image Back to Stock ------------- 1. Run in the OpenWrt shell: fw_setenv BootImage 1 reboot Recovery -------- 1. Press Reset button and power on the router 2. Navigate to U-Boot recovery web server (http://192.168.0.1/) and upload the OEM firmware MAC addresses ------------- +---------+-------------------+-------------------+-------------+ | | MAC example 1 | MAC example 2 | Algorithm | +---------+-------------------+-------------------+-------------+ | label | 68:ff:7b:xx:xx:f4 | 50:d4:f7:xx:xx:da | label | | LAN | 68:ff:7b:xx:xx:f4 | 50:d4:f7:xx:xx:da | label | | WAN | 72:ff:7b:xx:xx:f5 | 54:d4:f7:xx:xx:db | label+1 [1] | | WLAN 2g | 68:ff:7b:xx:xx:f4 | 50:d4:f7:xx:xx:da | label | | WLAN 5g | 68:ff:7b:xx:xx:f6 | 50:d4:f7:xx:xx:dc | label+2 | +---------+-------------------+-------------------+-------------+ label MAC address was found in factory at 0x165 (text format xx:xx:xx:xx:xx:xx). Notes ----- [1] WAN MAC address: a. First octet of WAN MAC is differ than others and OUI is not related to TP-Link company. This probably should be fixed. b. Flipping bits in first octet and hex delta are different for the different MAC examples: +-----------------+----------------+----------------+ | | Example 1 | Example 2 | +-----------------+----------------+----------------+ | LAN | 68 = 0110 1000 | 50 = 0101 0000 | | MAC (1st octet) | ^ ^ ^ | | +-----------------+----------------+----------------+ | WAN | 72 = 0111 0010 | 54 = 0101 0100 | | MAC (1st octet) | ^ ^ ^ | ^ | +-----------------+----------------+----------------+ | HEX delta | 0xa | 0x4 | +-----------------+----------------+----------------+ | DEC delta | 4 | 4 | +-----------------+----------------+----------------+ c. DEC delta is a constant (4). This looks like a mistake in OEM firmware and probably should be fixed. Based on the above, I decided to keep correct OUI and make WAN MAC = label + 1. [2] Bootloaders The device contains 3 bootloaders: - First U-Boot: U-Boot 1.1.3 (Mar 18 2019 - 12:50:24). The First U-Boot located on NAND Flash to load next full-feature Uboot. - Main U-Boot + its backup: U-Boot 1.1.3 (Mar 18 2019 - 12:50:29). This bootloader includes recovery webserver. Requires special uImages to continue the boot process: 0x00 (os0, os1) - firmware uImage 0x40 (os0, os1) - standalone uImage (OpenWrt kernel is here) - Additionally, both slots of the original TP-Link firmware contains Image U-Boot: U-Boot 1.1.3 (Oct 16 2019 - 08:14:45). It checks image magics and CRCs. We don't use this U-Boot with OpenWrt. Signed-off-by: Mikhail Zhilkin <csharper2005@gmail.com>	2023-01-14 18:36:33 +01:00