[LEDE-DEV] [PATCH v2] ramips: add support for RATOC REX-WIFISD2

FUKAUMI Naoki naobsd at gmail.com
Sat Jan 28 08:03:29 PST 2017 

RATOC REX-WIFISD2 is a battery-powered wireless SD card reader with

 - MT7620A + MT7610E
 - 64MiB DDR2 SDRAM
 - 16MiB SPI flash
 - 2T2R 11b/g/n + 1T1R 11ac/a/n Wi-Fi
 - 1x 10/100Mbps ethernet switch
 - 1x SD card
 - 1x USB 2.0
 - 2x programmable LED
 - 1x button

stock firmware is very similar to HooToo Tripmate travel routers. you
can do almost anything as a root user with telnet and/or shell script
(factory image or "EnterRouterMode.sh") on stock firmware.

"EnterRouterMode.sh" will be the easiest way to install. put the
following shell script into SD card (or USB storage) as
"EnterRouterMode.sh" with "kernel.bin" and "rootfs.bin" files.

 ----
 #!/bin/sh

 dir=`dirname $0`

 mtd_write write ${dir}/kernel.bin Kernel_RootFS
 mtd_write -r write ${dir}/rootfs.bin Rootfs
 ----

it will be run automatically when SD card is mounted on stock firmware.

TFTP can also be used to flash kernel and rootfs. it will be run by
press & hold RESET button while power on. (serverip=10.10.10.254)

you may use all partitions between "kernel" and "rootfs" as a single
"firmware" partition (please edit dts yourself), but "params" partition
should be kept if you want to restore stock firmware.

Signed-off-by: FUKAUMI Naoki <naobsd at gmail.com>
---
Changes in v2:
- add "read-only" property to "params", "user_backup", and "user" partitions

 .../linux/ramips/base-files/etc/board.d/02_network |   1 +
 target/linux/ramips/base-files/etc/diag.sh         |   3 +-
 target/linux/ramips/base-files/lib/ramips.sh       |   3 +
 .../ramips/base-files/lib/upgrade/platform.sh      |   1 +
 target/linux/ramips/dts/REX-WIFISD2.dts            | 148 +++++++++++++++++++++
 target/linux/ramips/image/mt7620.mk                |  10 ++
 6 files changed, 165 insertions(+), 1 deletion(-)
 create mode 100644 target/linux/ramips/dts/REX-WIFISD2.dts

diff --git a/target/linux/ramips/base-files/etc/board.d/02_network b/target/linux/ramips/base-files/etc/board.d/02_network
index 91f1aaa..b27954f 100755
--- a/target/linux/ramips/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/base-files/etc/board.d/02_network
@@ -192,6 +192,7 @@ ramips_setup_interfaces()
 	mzk-ex750np|\
 	na930|\
 	pbr-d1|\
+	rex-wifisd2|\
 	wli-tx4-ag300n|\
 	wmr-300|\
 	wrh-300cr)
diff --git a/target/linux/ramips/base-files/etc/diag.sh b/target/linux/ramips/base-files/etc/diag.sh
index 9499833..84031d1 100644
--- a/target/linux/ramips/base-files/etc/diag.sh
+++ b/target/linux/ramips/base-files/etc/diag.sh
@@ -41,7 +41,8 @@ get_status_led() {
 	xdxrn502j)
 		status_led="$board:green:power"
 		;;
-	3g-6200nl)
+	3g-6200nl|\
+	rex-wifisd2)
 		status_led="$board:green:internet"
 		;;
 	a5-v11|\
diff --git a/target/linux/ramips/base-files/lib/ramips.sh b/target/linux/ramips/base-files/lib/ramips.sh
index 8292da1..5ab46de 100755
--- a/target/linux/ramips/base-files/lib/ramips.sh
+++ b/target/linux/ramips/base-files/lib/ramips.sh
@@ -406,6 +406,9 @@ ramips_board_detect() {
 	*"RE6500")
 		name="re6500"
 		;;
+	*"REX-WIFISD2")
+		name="rex-wifisd2"
+		;;
 	*"RN502J")
 		name="xdxrn502j"
 		;;
diff --git a/target/linux/ramips/base-files/lib/upgrade/platform.sh b/target/linux/ramips/base-files/lib/upgrade/platform.sh
index c6ad8ca..05d2759 100755
--- a/target/linux/ramips/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ramips/base-files/lib/upgrade/platform.sh
@@ -113,6 +113,7 @@ platform_check_image() {
 	px-4885|\
 	rb750gr3|\
 	re6500|\
+	rex-wifisd2|\
 	rp-n53|\
 	rt5350f-olinuxino|\
 	rt5350f-olinuxino-evb|\
diff --git a/target/linux/ramips/dts/REX-WIFISD2.dts b/target/linux/ramips/dts/REX-WIFISD2.dts
new file mode 100644
index 0000000..4d8819a
--- /dev/null
+++ b/target/linux/ramips/dts/REX-WIFISD2.dts
@@ -0,0 +1,148 @@
+/dts-v1/;
+
+#include "mt7620a.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "ratoc,rex-wifisd2", "ralink,mt7620a-soc";
+	model = "RATOC REX-WIFISD2";
+
+	gpio-keys-polled {
+		compatible = "gpio-keys-polled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		poll-interval = <20>;
+
+		reset {
+			label = "reset";
+			gpios = <&gpio2 1 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		internet {
+			label = "rex-wifisd2:green:internet";
+			gpios = <&gpio2 2 GPIO_ACTIVE_HIGH>;
+		};
+
+		wifi {
+			label = "rex-wifisd2:blue:wifi";
+			gpios = <&gpio3 0 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&ehci {
+	status = "okay";
+};
+
+&ethernet {
+	mtd-mac-address = <&factory 0x2e>;
+	mediatek,portmap = "llllw";
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&gpio2 {
+	status = "okay";
+};
+
+&gpio3 {
+	status = "okay";
+};
+
+&ohci {
+	status = "okay";
+};
+
+&pcie {
+	status = "okay";
+
+	pcie-bridge {
+		mt76 at 0,0 {
+			reg = <0x0000 0 0 0 0>;
+			device_type = "pci";
+			mediatek,mtd-eeprom = <&factory 0x8000>;
+			mediatek,2ghz = <0>;
+		};
+	};
+};
+
+&pinctrl {
+	state_default: pinctrl0 {
+		gpio {
+			ralink,group = "wled", "ephy";
+			ralink,function = "gpio";
+		};
+	};
+};
+
+&spi0 {
+	status = "okay";
+
+	m25p80 at 0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <10000000>;
+		m25p,chunked-io = <32>;
+
+		partition at 0 {
+			label = "u-boot";
+			reg = <0x0 0x30000>;
+			read-only;
+		};
+
+		partition at 30000 {
+			label = "u-boot-env";
+			reg = <0x30000 0x10000>;
+			read-only;
+		};
+
+		factory: partition at 40000 {
+			label = "factory";
+			reg = <0x40000 0x10000>;
+			read-only;
+		};
+
+		partition at 50000 {
+			label = "kernel";
+			reg = <0x50000 0x180000>;
+		};
+
+		partition at 1d0000 {
+			label = "params";
+			reg = <0x1d0000 0x10000>;
+			read-only;
+		};
+
+		partition at 1e0000 {
+			label = "user_backup";
+			reg = <0x1e0000 0x10000>;
+			read-only;
+		};
+
+		partition at 1f0000 {
+			label = "user";
+			reg = <0x1f0000 0x10000>;
+			read-only;
+		};
+
+		partition at 200000 {
+			label = "rootfs";
+			reg = <0x200000 0xe00000>;
+		};
+	};
+};
+
+&wmac {
+	ralink,mtd-eeprom = <&factory 0>;
+};
diff --git a/target/linux/ramips/image/mt7620.mk b/target/linux/ramips/image/mt7620.mk
index 50eae2f..0728d93 100644
--- a/target/linux/ramips/image/mt7620.mk
+++ b/target/linux/ramips/image/mt7620.mk
@@ -465,3 +465,13 @@ define Device/kng_rc
 	zyimage -d 8997 -v "ZyXEL Keenetic Viva"
 endef
 TARGET_DEVICES += kng_rc
+
+define Device/rex-wifisd2
+  DTS := REX-WIFISD2
+  IMAGES := kernel.bin rootfs.bin
+  IMAGE/kernel.bin := append-kernel
+  IMAGE/rootfs.bin := append-rootfs | pad-rootfs
+  DEVICE_TITLE := RATOC REX-WIFISD2
+  DEVICE_PACKAGES := kmod-usb2 kmod-usb-ohci
+endef
+TARGET_DEVICES += rex-wifisd2
-- 
2.7.4

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