[LEDE-DEV] [PATCH] ramips: Add support for the HNET C108

Kristian Evensen kristian.evensen at gmail.com
Tue Sep 5 12:48:14 PDT 2017


The HNET C108
(http://www.szhwtech88.com/Product-product-cid-100-id-4374.html) is a
mifi based on MT7602A, which has the following specifications:

* CPU: MT7620A
* 1x 10/100Mbps Ethernet.
* 16 MB Flash.
* 64 MB RAM.
* 1x USB 2.0 port.
* 1x mini-PCIe slots.
* 1x SIM slots.
* 1x 2.4Ghz WIFI.
* 1x button.
* 6000 mAh battery.
* 5x controllable LEDs.

Works:
* Wifi.
* Switch.
* mini-PCIe slot. Only tested with a USB device (a modem).
* SIM slot.
* Sysupgrade.
* Button (reset).

Not working:
* USB port.
* Wifi LED. It is always switched on.

Not tested:
* SD card reader.

Notes:
* The C108 has no dedicated status LED. I therefore set the LAN LED as
status LED.
* By default, both the LAN and Wifi interface has the same MAC address.
The factory firmware sets the MAC address of the Wifi interface to (LAN
+ 2) in order to avoid having the same MAC. I did not find an easy way
to accomplish this using the existing LEDE infrastructure. Instead, I
implemented the opposite, i.e., the MAC address of the LAN interface is
increased by two.
* In commit 77645ffcd9ad767be02ea6d5cfe042928a3565d1, the mode of
01_leds was set to 0644. This patch changes that back 0755.

Installation:
The router comes pre-installed with OpenWRT, including a variant of
Luci. The initial firmware install can be done through this UI,
following normal procedure. I.e., access the UI and update the firmware
using the sysupgrade-image. Remember to select that you do not want to
keep existing settings.

Recovery:
If you brick the device, the C108 supports recovery using TFTP. Keep the
reset button pressed for ~5sec when booting to trigger TFTP. Set the
address of the network interface on your machine to 10.10.10.3/24, and
rename your image file to Kernal.bin.

Signed-off-by: Kristian Evensen <kristian.evensen at gmail.com>
---
 target/linux/ramips/base-files/etc/board.d/01_leds |   4 +
 .../linux/ramips/base-files/etc/board.d/02_network |   5 +
 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/C108.dts                   | 182 +++++++++++++++++++++
 target/linux/ramips/image/mt7620.mk                |   8 +
 7 files changed, 206 insertions(+)
 mode change 100644 => 100755 target/linux/ramips/base-files/etc/board.d/01_leds
 create mode 100644 target/linux/ramips/dts/C108.dts

diff --git a/target/linux/ramips/base-files/etc/board.d/01_leds b/target/linux/ramips/base-files/etc/board.d/01_leds
old mode 100644
new mode 100755
index ff5d156f2c..83e1a94000
--- a/target/linux/ramips/base-files/etc/board.d/01_leds
+++ b/target/linux/ramips/base-files/etc/board.d/01_leds
@@ -82,6 +82,10 @@ broadway)
 	set_usb_led "$board:red:diskmounted"
 	set_wifi_led "$board:red:wps_active"
 	;;
+c108)
+	ucidef_set_led_netdev "lan" "lan" "$board:green:lan" "eth0"
+	ucidef_set_led_netdev "modem" "modem" "$board:green:modem" "wwan0"
+	;;
 c20i)
 	ucidef_set_led_switch "lan" "lan" "$board:blue:lan" "switch0" "0x1e"
 	ucidef_set_led_switch "wan" "wan" "$board:blue:wan" "switch0" "0x01"
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 df70a8b2ec..273a0a75c9 100755
--- a/target/linux/ramips/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/base-files/etc/board.d/02_network
@@ -217,6 +217,7 @@ ramips_setup_interfaces()
 		ucidef_add_switch "switch0" \
 			"1:lan" "2:lan" "3:lan" "4:lan" "0:wan" "9 at eth0"
 		;;
+	c108|\
 	cf-wr800n)
 		ucidef_add_switch "switch0" \
 			"4:lan" "6t at eth0"
@@ -386,6 +387,10 @@ ramips_setup_macs()
 		lan_mac=$(cat /sys/class/net/eth0/address)
 		wan_mac=$(mtd_get_mac_binary devdata 7)
 		;;
+	c108)
+		lan_mac=$(cat /sys/class/net/eth0/address)
+		lan_mac=$(macaddr_add "$lan_mac" 2)
+		;;
 	cy-swr1100|\
 	dch-m225)
 		lan_mac=$(mtd_get_mac_ascii factory lanmac)
diff --git a/target/linux/ramips/base-files/etc/diag.sh b/target/linux/ramips/base-files/etc/diag.sh
index 960e189283..7b267a6854 100644
--- a/target/linux/ramips/base-files/etc/diag.sh
+++ b/target/linux/ramips/base-files/etc/diag.sh
@@ -296,6 +296,9 @@ get_status_led() {
 	zbt-wg3526-32M)
 		status_led="zbt-wg3526:green:status"
 		;;
+	c108)
+		status_len="$board:green:lan"
+		;;
 	esac
 }
 
diff --git a/target/linux/ramips/base-files/lib/ramips.sh b/target/linux/ramips/base-files/lib/ramips.sh
index fe66a87c2e..174e29e434 100755
--- a/target/linux/ramips/base-files/lib/ramips.sh
+++ b/target/linux/ramips/base-files/lib/ramips.sh
@@ -85,6 +85,9 @@ ramips_board_detect() {
 	*"Broadway")
 		name="broadway"
 		;;
+	*"C108")
+		name="c108"
+		;;
 	*"C20i")
 		name="c20i"
 		;;
diff --git a/target/linux/ramips/base-files/lib/upgrade/platform.sh b/target/linux/ramips/base-files/lib/upgrade/platform.sh
index 3cb1d19a28..5cfca52ab1 100755
--- a/target/linux/ramips/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ramips/base-files/lib/upgrade/platform.sh
@@ -29,6 +29,7 @@ platform_check_image() {
 	awm002-evb-8M|\
 	bc2|\
 	broadway|\
+	c108|\
 	carambola|\
 	cf-wr800n|\
 	cs-qr10|\
diff --git a/target/linux/ramips/dts/C108.dts b/target/linux/ramips/dts/C108.dts
new file mode 100644
index 0000000000..c8f57ed949
--- /dev/null
+++ b/target/linux/ramips/dts/C108.dts
@@ -0,0 +1,182 @@
+/*
+ *  BSD LICENSE
+ *
+ *  Copyright(c) 2017 Kristian Evensen <kristian.evensen at gmail.com>.
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions
+ *  are met:
+ *
+ *    * Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *    * Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in
+ *      the documentation and/or other materials provided with the
+ *      distribution.
+ *    * Neither the name of Broadcom Corporation nor the names of its
+ *      contributors may be used to endorse or promote products derived
+ *      from this software without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/dts-v1/;
+
+#include "mt7620a.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "hnet,c108", "ralink,mt7620a-soc";
+	model = "HNET C108";
+
+	chosen {
+		bootargs = "console=ttyS0,115200";
+	};
+
+	gpio-export {
+		compatible = "gpio-export";
+		#size-cells = <0>;
+
+		power_modem {
+			gpio-export,name = "power_modem";
+			gpio-export,output = <GPIO_ACTIVE_LOW>;
+			gpios = <&gpio2 2 GPIO_ACTIVE_HIGH>;
+		};
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		sdcard {
+			label = "c108:green:sdcard";
+			gpios = <&gpio0 13 GPIO_ACTIVE_HIGH>;
+		};
+
+		modem_green {
+			label = "c108:green:modem";
+			gpios = <&gpio1 14 GPIO_ACTIVE_LOW>;
+		};
+
+		modem_red {
+			label = "c108:red:modem";
+			gpios = <&gpio1 15 GPIO_ACTIVE_LOW>;
+		};
+
+		lan_red {
+			label = "c108:red:lan";
+			gpios = <&gpio2 3 GPIO_ACTIVE_HIGH>;
+		};
+
+		lan_green {
+			label = "c108:green:lan";
+			gpios = <&gpio2 4 GPIO_ACTIVE_HIGH>;
+		};
+	};
+
+	gpio-keys-polled {
+		compatible = "gpio-keys-polled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		poll-interval = <20>;
+
+		reset {
+			label = "reset";
+			gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&gpio2 {
+	status = "okay";
+};
+
+&gpio3 {
+	status = "okay";
+};
+
+&spi0 {
+	status = "okay";
+
+	en25q128 at 0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <10000000>;
+
+		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 = "firmware";
+			reg = <0x50000 0xfb0000>;
+		};
+	};
+};
+
+&sdhci {
+	status = "okay";
+};
+
+&ehci {
+	status = "okay";
+};
+
+&ohci {
+	status = "okay";
+};
+
+&ethernet {
+	mtd-mac-address = <&factory 0x4>;
+	mediatek,portmap = "l";
+};
+
+&wmac {
+	ralink,mtd-eeprom = <&factory 0>;
+};
+
+&pinctrl {
+	state_default: pinctrl0 {
+		default {
+			ralink,group = "i2c", "uartf", "spi refclk", "ephy";
+			ralink,function = "gpio";
+		};
+	};
+};
+
+&pcie {
+	status = "okay";
+};
diff --git a/target/linux/ramips/image/mt7620.mk b/target/linux/ramips/image/mt7620.mk
index f9a9fdb84c..0061a018b9 100644
--- a/target/linux/ramips/image/mt7620.mk
+++ b/target/linux/ramips/image/mt7620.mk
@@ -62,6 +62,14 @@ define Device/ArcherMR200
 endef
 TARGET_DEVICES += ArcherMR200
 
+define Device/c108
+  DTS := C108
+  IMAGE_SIZE := $(ralink_default_fw_size_16M)
+  DEVICE_TITLE := HNET C108
+  DEVICE_PACKAGES := kmod-usb2 kmod-usb-ohci kmod-sdhci-mt7620
+endef
+TARGET_DEVICES += c108
+
 define Device/cf-wr800n
   DTS := CF-WR800N
   DEVICE_TITLE := Comfast CF-WR800N
-- 
2.11.0




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