ramips: mt76x8: add support for Cudy WR300 v1

Hardware:
 - SoC: MediaTek MT7628AN (MIPS 580MHz)
 - Flash: 8 MiB NOR
 - RAM: 64 MiB DDR2
 - WLAN: 2.4 GHz (MT7628)
 - Ethernet: 1x 10/100 Mbps WAN, 3x 10/100 LAN (MT7628)
 - Buttons: 1x Reset, 1x wps
 - LEDs: Front: 1x Red, 1x White
 - Serial console: unpopulated header, 115200 8n1
 - Power: 12v barrel

MAC addresses:
+---------+-------------------+-----------+
|         | MAC               | Algorithm |
+---------+-------------------+-----------+
| LAN/WAN | d4:0d:ab:xx:xx:x0 | label     |
| WLAN 2g | d4:0d:ab:xx:xx:x1 | label+1   |
+---------+-------------------+-----------+

Migration to OpenWrt:
- Download the RSA-signed intermediate firmware from the Cudy website: `openwrt-ramips-mt76x8-cudy_wr300-squashfs-flash.bin`
- Connect the computer to the LAN and flash the intermediate firmware via the OEM web interface
- OpenWrt is now accessible via 192.168.1.1

Revert to OEM firmware:
- Set up a TFTP server on IP 192.168.1.88 and connect to the WAN port (upper port)
- Provide the Cudy firmware as `recovery.bin` in the TFTP server
- Power on the device and hold the reset button immediately after the first LED blink
- The recovery process will start
- When the recovery process is done, OEM firmware is accessible via 192.168.10.1 again

General information:
- No possibility to load an initramfs image via U-Boot because there is no option to interrupt U-Boot

Signed-off-by: Fil Dunsky <filipp.dunsky@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/23426
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

diff --git a/target/linux/ramips/dts/mt7628an_cudy_wr300-v1.dts b/target/linux/ramips/dts/mt7628an_cudy_wr300-v1.dts
new file mode 100644 (file)
index 0000000..291456a
--- /dev/null
+++ b/target/linux/ramips/dts/mt7628an_cudy_wr300-v1.dts
@@ -0,0 +1,147 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "mt7628an.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+       compatible = "cudy,wr300-v1", "mediatek,mt7628an-soc";
+       model = "Cudy WR300 v1";
+
+       aliases {
+               led-boot = &white_status;
+               led-running = &white_status;
+               led-failsafe = &red_status;
+               led-upgrade = &red_status;
+               label-mac-device = &ethernet;
+       };
+
+       chosen {
+               bootargs = "console=ttyS0,115200";
+       };
+
+       gpio-keys {
+               compatible = "gpio-keys";
+
+               button-reset {
+                       label = "reset";
+                       linux,code = <KEY_RESTART>;
+                       gpios = <&gpio 36 GPIO_ACTIVE_LOW>;
+               };
+
+               button-wps {
+                       label = "wps";
+                       linux,code = <KEY_WPS_BUTTON>;
+                       gpios = <&gpio 38 GPIO_ACTIVE_LOW>;
+               };
+       };
+
+       leds {
+               compatible = "gpio-leds";
+
+               red_status: red_status {
+                       function = LED_FUNCTION_STATUS;
+                       color = <LED_COLOR_ID_RED>;
+                       gpios = <&gpio 44 GPIO_ACTIVE_LOW>;
+               };
+
+               white_status: white_status {
+                       function = LED_FUNCTION_STATUS;
+                       color = <LED_COLOR_ID_WHITE>;
+                       gpios = <&gpio 37 GPIO_ACTIVE_LOW>;
+               };
+       };
+};
+
+&spi0 {
+       status = "okay";
+
+       flash@0 {
+               compatible = "jedec,spi-nor";
+               reg = <0>;
+               spi-max-frequency = <40000000>;
+
+               partitions {
+                       compatible = "fixed-partitions";
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+
+                       partition@0 {
+                               label = "u-boot";
+                               reg = <0x0 0x30000>;
+                               read-only;
+                       };
+
+                       partition@30000 {
+                               label = "u-boot-env";
+                               reg = <0x30000 0x10000>;
+                               read-only;
+                       };
+
+                       partition@40000 {
+                               label = "factory";
+                               reg = <0x40000 0x10000>;
+                               read-only;
+
+                               nvmem-layout {
+                                       compatible = "fixed-layout";
+                                       #address-cells = <1>;
+                                       #size-cells = <1>;
+
+                                       eeprom_factory_0: eeprom@0 {
+                                               reg = <0x0 0x400>;
+                                       };
+                               };
+                       };
+
+                       partition@50000 {
+                               compatible = "denx,uimage";
+                               label = "firmware";
+                               reg = <0x50000 0x7a0000>;
+                       };
+
+                       partition@7f0000 {
+                               label = "bdinfo";
+                               reg = <0x7f0000 0x10000>;
+                               read-only;
+
+                               nvmem-layout {
+                                       compatible = "fixed-layout";
+                                       #address-cells = <1>;
+                                       #size-cells = <1>;
+
+                                       macaddr_bdinfo_de00: macaddr@de00 {
+                                               compatible = "mac-base";
+                                               reg = <0xde00 0x6>;
+                                               #nvmem-cell-cells = <1>;
+                                       };
+                               };
+                       };
+               };
+       };
+};
+
+&state_default {
+       gpio {
+               groups = "i2s", "refclk", "wdt", "wled_an";
+               function = "gpio";
+       };
+};
+
+&wmac {
+       status = "okay";
+
+       nvmem-cells = <&eeprom_factory_0>, <&macaddr_bdinfo_de00 1>;
+       nvmem-cell-names = "eeprom", "mac-address";
+};
+
+&ethernet {
+       nvmem-cells = <&macaddr_bdinfo_de00 0>;
+       nvmem-cell-names = "mac-address";
+};
+
+&esw {
+       mediatek,portmap = <0x4f>;
+};

diff --git a/target/linux/ramips/image/mt76x8.mk b/target/linux/ramips/image/mt76x8.mk
index 9e1ab597133827ed879935360874fe30c4d55038..ea9676a1762e27a9d43c46b489a58ddfd221c2f7 100644 (file)
--- a/target/linux/ramips/image/mt76x8.mk
+++ b/target/linux/ramips/image/mt76x8.mk
@@ -254,6 +254,15 @@ define Device/cudy_tr1200-v1
 endef
 TARGET_DEVICES += cudy_tr1200-v1
 
+define Device/cudy_wr300-v1
+  IMAGE_SIZE := 7808k
+  DEVICE_VENDOR := Cudy
+  DEVICE_MODEL := WR300
+  DEVICE_VARIANT := v1
+  SUPPORTED_DEVICES += cudy,wr300
+endef
+TARGET_DEVICES += cudy_wr300-v1
+
 define Device/cudy_wr1000
   IMAGE_SIZE := 7872k
   IMAGES += factory.bin

diff --git a/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network b/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network
index 9a699724e0edf119da822cb92ec8776281b7c629..c410554aea157e069c8a4ae29d1aaeceddf08d52 100644 (file)
--- a/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network
@@ -134,6 +134,7 @@ ramips_setup_interfaces()
                ucidef_add_switch "switch0" \
                        "0:lan" "1:lan" "4:wan" "6@eth0"
                ;;
+       cudy,wr300-v1|\
        hongdian,h8850-v20|\
        keenetic,kn-1112|\
        keenetic,kn-1212|\