[PATCH v2 4/4] ramips: mt7621: Add support for ZyXEL LTE3301-Plus

André Valentin avalentin at marcant.net
Mon May 17 02:57:11 PDT 2021


The ZyXEL LTE3301-Plus is an 4G indoor CPE with 2 external LTE antennas.

Specifications:

 - SoC: MediaTek MT7621AT
 - RAM: 256 MB
 - Flash: 128 MB MB NAND (MX30LF1G18AC)
 - WiFi: MediaTek MT7615E
 - Switch: 4 LAN ports (Gigabit)
 - LTE: Quectel EG506 connected by USB3 to SoC
 - SIM: 1 micro-SIM slot
 - USB: USB3 port
 - Buttons: Reset, WPS
 - LEDs: Multicolour power, internet, LTE, signal, Wifi, USB
 - Power: 12V, 1.5A

The device is built as an indoor ethernet to LTE bridge or router with Wifi.

UART Serial:

57600N1
Located on populated 5 pin header J5:

 [o] GND
 [ ] key - no pin
 [o] 3.3V Vcc
 [o] RX
 [o] TX

For more details about flashing and bootloader see commit 
2449a632084b29632605e5a79ce5d73028eb15dd .

Installation:
1. Upload image via web interface or via bootloader.
2. Wait for the device to come up.

Signed-off-by: André Valentin <avalentin at marcant.net>
---
 package/boot/uboot-envtools/files/ramips      |   1 +
 .../ramips/dts/mt7621_zyxel_lte3301-plus.dts  | 209 ++++++++++++++++++
 target/linux/ramips/image/mt7621.mk           |  22 ++
 .../mt7621/base-files/etc/board.d/01_leds     |   4 +
 .../mt7621/base-files/etc/board.d/02_network  |   3 +-
 .../base-files/etc/board.d/03_gpio_switches   |   3 +
 .../mt7621/base-files/etc/init.d/bootcount    |   1 +
 .../lib/preinit/79_lte3301-plus-setup-ubi     |  43 ++++
 .../mt7621/base-files/lib/upgrade/platform.sh |  33 ++-
 9 files changed, 317 insertions(+), 2 deletions(-)
 create mode 100644 target/linux/ramips/dts/mt7621_zyxel_lte3301-plus.dts
 create mode 100644 target/linux/ramips/mt7621/base-files/lib/preinit/79_lte3301-plus-setup-ubi

diff --git a/package/boot/uboot-envtools/files/ramips b/package/boot/uboot-envtools/files/ramips
index bce2e5f0fb..4d0e608911 100644
--- a/package/boot/uboot-envtools/files/ramips
+++ b/package/boot/uboot-envtools/files/ramips
@@ -53,6 +53,7 @@ xiaomi,mi-router-ac2100|\
 xiaomi,redmi-router-ac2100)
 	ubootenv_add_uci_config "/dev/mtd1" "0x0" "0x1000" "0x20000"
 	;;
+zyxel,lte3301-plus|\
 zyxel,nr7101)
 	idx="$(find_mtd_index Config)"
 	[ -n "$idx" ] && \
diff --git a/target/linux/ramips/dts/mt7621_zyxel_lte3301-plus.dts b/target/linux/ramips/dts/mt7621_zyxel_lte3301-plus.dts
new file mode 100644
index 0000000000..94e5a6c487
--- /dev/null
+++ b/target/linux/ramips/dts/mt7621_zyxel_lte3301-plus.dts
@@ -0,0 +1,209 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "mt7621.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "zyxel,lte3301-plus", "mediatek,mt7621-soc";
+	model = "ZyXEL LTE3301-PLUS";
+
+	aliases {
+		label-mac-device = &gmac0;
+		led-boot = &led_power;
+		led-failsafe = &led_power;
+		led-running = &led_power;
+		led-upgrade = &led_power;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_power: power {
+			label = "white:power";
+			gpios = <&gpio 5 GPIO_ACTIVE_HIGH>;
+		};
+
+		wifi {
+			label = "white:wifi";
+			gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
+		};
+
+		internet {
+			label = "white:internet";
+			gpios = <&gpio 23 GPIO_ACTIVE_LOW>;
+		};
+
+		usb {
+			label = "white:usb";
+			gpios = <&gpio 24 GPIO_ACTIVE_LOW>;
+		};
+
+		lte {
+			label = "white:lte";
+			gpios = <&gpio 26 GPIO_ACTIVE_LOW>;
+		};
+
+		mobile_green {
+			label = "green:mobile";
+			gpios = <&gpio 31 GPIO_ACTIVE_LOW>;
+		};
+
+		mobile_orange {
+			label = "orange:mobile";
+			gpios = <&gpio 22 GPIO_ACTIVE_LOW>;
+		};
+
+		mobile_red {
+			label = "red:mobile";
+			gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			gpios = <&gpio 18 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+
+		wps {
+			label = "wps";
+			gpios = <&gpio 6 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+	};
+};
+
+&gpio {
+	status = "okay";
+
+	lte_power {
+		gpio-hog;
+		gpios = <27 GPIO_ACTIVE_LOW>;
+		output-high;
+		line-name = "lte-power";
+	};
+
+	usb_power {
+		gpio-hog;
+		gpios = <7 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "usb-power";
+	};
+};
+
+&nand {
+	status = "okay";
+
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		partition at 0 {
+			label = "Bootloader";
+			reg = <0x0 0x80000>;
+			read-only;
+		};
+
+		partition at 80000 {
+			label = "Config";
+			reg = <0x80000 0x80000>;
+		};
+
+		factory: partition at 100000 {
+			label = "Factory";
+			reg = <0x100000 0x40000>;
+			read-only;
+		};
+
+		partition at 140000 {
+			/* reg = <0x140000 0x1ec0000>; */
+			reg = <0x140000 0x1ea0000>;
+			compatible = "openwrt,uimage", "denx,uimage", "openwrt,squashfs";
+			label = "firmware";
+			openwrt,offset = <380>;
+			openwrt,data-partition-name = "ubi";
+		};
+
+		partition at 2140000 {
+			label = "Kernel2";
+			reg = <0x2140000 0x1ec0000>;
+		};
+
+		partition at 4000000 {
+			label = "wwan";
+			reg = <0x4000000 0x100000>;
+		};
+
+		partition at 4100000 {
+			label = "xxxxxdata";
+			reg = <0x4100000 0x1000000>;
+		};
+
+		partition at 5100000 {
+			label = "rom-d";
+			reg = <0x5100000 0x100000>;
+			read-only;
+		};
+
+		partition at 5200000 {
+			label = "reserve";
+			reg = <0x5200000 0x80000>;
+		};
+	};
+};
+
+&pcie {
+       status = "okay";
+
+};
+
+&pcie0 {
+       status = "okay";
+
+       mt7615d at 1,0 {
+               compatible = "pci14c3,7615";
+               reg = <0x0000 0 0 0 0>;
+               mediatek,firmware-eeprom = "mt7615e_eeprom.bin";
+               mediatek,mtd-eeprom = <&factory 0x0000>;
+               mtd-mac-address = <&factory 0xfe6e>;
+	       mtd-mac-address-increment = <1>;
+	};
+};
+
+&gmac0 {
+	mtd-mac-address = <&factory 0xfe6e>;
+};
+
+&switch0 {
+	ports {
+		port at 0 {
+			status = "okay";
+			label = "lan4";
+		};
+		port at 1 {
+			status = "okay";
+			label = "lan3";
+		};
+		port at 2 {
+			status = "okay";
+			label = "lan2";
+		};
+		port at 3 {
+			status = "okay";
+			label = "lan1";
+		};
+	};
+};
+
+&state_default {
+	gpio {
+		groups = "wdt", "uart3", "rgmii2", "jtag";
+		function = "gpio";
+	};
+};
\ No newline at end of file
diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
index 48448c2ab1..f53ea8b2dd 100644
--- a/target/linux/ramips/image/mt7621.mk
+++ b/target/linux/ramips/image/mt7621.mk
@@ -1511,6 +1511,28 @@ define Device/zio_freezio
 endef
 TARGET_DEVICES += zio_freezio
 
+define Device/zyxel_lte3301-plus
+  $(Device/dsa-migration)
+  BLOCKSIZE := 128k
+  PAGESIZE := 2048
+  DEVICE_VENDOR := ZyXEL
+  DEVICE_MODEL := LTE3301-PLUS
+  DEVICE_PACKAGES := kmod-mt7615e kmod-mt7615-firmware kmod-usb3 \
+	uboot-envtools kmod-usb-ledtrig-usbport kmod-usb-net-qmi-wwan \
+	kmod-usb-serial-option uqmi ubifs-utils ubi-utils fwtool
+  KERNEL := $(KERNEL_DTB) | uImage lzma
+  KERNEL_INITRAMFS := $(KERNEL_DTB) | uImage lzma | \
+	zytrx-header $$(DEVICE_MODEL) 9.99(ABQU.1)$$(VERSION_DIST)-recovery
+  KERNEL_INITRAMFS_SUFFIX := -recovery.bin
+  IMAGES := sysupgrade.bin factory-ras.bin
+  IMAGE/sysupgrade.bin := append-kernel | append-rootfs |\
+	zytrx-header $$(DEVICE_MODEL) $$(VERSION_DIST)-$$(REVISION) | \
+	pad-to $$(BLOCKSIZE) | append-metadata
+  IMAGE/factory-ras.bin := append-kernel | append-rootfs |\
+	zytrx-header $$(DEVICE_MODEL) $$(VERSION_DIST)-$$(REVISION)
+endef
+TARGET_DEVICES += zyxel_lte3301-plus
+
 define Device/zyxel_nr7101
   $(Device/dsa-migration)
   BLOCKSIZE := 128k
diff --git a/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds b/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds
index 6743b7e6c3..8788f7d3be 100644
--- a/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds
+++ b/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds
@@ -98,6 +98,10 @@ xiaomi,redmi-router-ac2100)
 youhua,wr1200js)
 	ucidef_set_led_netdev "internet" "INTERNET" "green:wan" "wan"
 	;;
+zyxel,lte3301-plus)
+	ucidef_set_led_netdev "internet" "internet" "white:internet" "wwan0"
+	ucidef_set_led_usbport "usb" "USB" "white:usb" "usb1-port2"
+	;;
 esac
 
 board_config_flush
diff --git a/target/linux/ramips/mt7621/base-files/etc/board.d/02_network b/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
index cde3cba9bc..aae06ea588 100644
--- a/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
@@ -45,7 +45,8 @@ ramips_setup_interfaces()
 		ucidef_set_interface_lan "lan1 lan2"
 		;;
 	linksys,re6500|\
-	netgear,wac104)
+	netgear,wac104|\
+	zyxel,lte3301-plus)
 		ucidef_set_interface_lan "lan1 lan2 lan3 lan4"
 		;;
 	mikrotik,routerboard-750gr3)
diff --git a/target/linux/ramips/mt7621/base-files/etc/board.d/03_gpio_switches b/target/linux/ramips/mt7621/base-files/etc/board.d/03_gpio_switches
index ed728b07c4..1959d8c9d2 100644
--- a/target/linux/ramips/mt7621/base-files/etc/board.d/03_gpio_switches
+++ b/target/linux/ramips/mt7621/base-files/etc/board.d/03_gpio_switches
@@ -22,6 +22,9 @@ ubnt,edgerouter-x-sfp)
 	ucidef_add_gpio_switch "poe_power_port3" "PoE Power Port3" "403"
 	ucidef_add_gpio_switch "poe_power_port4" "PoE Power Port4" "404"
 	;;
+zyxel,lte3301-plus)
+	ucidef_add_gpio_switch "lte_power" "Power LTE modem" "507"
+	;;
 zyxel,nr7101)
 	ucidef_add_gpio_switch "lte_reset" "Reset LTE/5G modem" "483"
 	;;
diff --git a/target/linux/ramips/mt7621/base-files/etc/init.d/bootcount b/target/linux/ramips/mt7621/base-files/etc/init.d/bootcount
index a155458d3f..03c6d8eea7 100755
--- a/target/linux/ramips/mt7621/base-files/etc/init.d/bootcount
+++ b/target/linux/ramips/mt7621/base-files/etc/init.d/bootcount
@@ -16,6 +16,7 @@ boot() {
 	samknows,whitebox-v8)
 		fw_setenv bootcount 0
 		;;
+	zyxel,lte3301-plus|\
 	zyxel,nr7101)
 		[ $(printf %d $(fw_printenv -n DebugFlag)) -gt 0 ] || fw_setenv DebugFlag 0x1
 		[ $(printf %d $(fw_printenv -n Image1Stable)) -gt 0 ] || fw_setenv Image1Stable 1
diff --git a/target/linux/ramips/mt7621/base-files/lib/preinit/79_lte3301-plus-setup-ubi b/target/linux/ramips/mt7621/base-files/lib/preinit/79_lte3301-plus-setup-ubi
new file mode 100644
index 0000000000..3d55c421b0
--- /dev/null
+++ b/target/linux/ramips/mt7621/base-files/lib/preinit/79_lte3301-plus-setup-ubi
@@ -0,0 +1,43 @@
+. /lib/functions.sh
+
+lte3301plus_setup_ubi() {
+	if [ "$(cat /sys/firmware/devicetree/base/model)" != "ZyXEL LTE3301-PLUS" ]; then
+		return 0
+	fi
+	if [ -c /dev/ubi0 ]; then
+		return 0
+	fi
+
+	mtd=$(fgrep '"ubi"' /proc/mtd |cut -d: -f1)
+	if [ -z "$mtd" ]; then
+		echo "UBI mtd not found."
+		return 0
+	fi
+	mtd=/dev/$mtd
+
+	# If the kernel has not automounted the ubi volume, it must be initialized.
+	# The bootloader copies over images somehow different.
+	mtd erase $mtd
+	echo "Format $mtd with ubi."
+	if ! ubiformat -y $mtd; then
+		echo "Failed to format $mtd."
+		return 0
+	fi
+	echo "Attaching $mtd."
+	ubiattach -p $mtd
+
+	sleep 2
+	mknod /dev/ubi0 c 251 0
+	if ubinfo -a | grep rootfs_data >/dev/null 2>&1 ; then
+		echo "rootfs_data exists, no need."
+		return 0
+	fi
+
+	echo "Creating rootfs_data on ubi."
+	if ubimkvol /dev/ubi0 -n0 -N rootfs_data -m; then
+		mknod /dev/ubi0_0 c 251 1
+	fi
+	return 0
+}
+
+boot_hook_add preinit_main lte3301plus_setup_ubi
diff --git a/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh b/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
index d30bc3db2e..a770111a93 100755
--- a/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
@@ -5,7 +5,7 @@
 PART_NAME=firmware
 REQUIRE_IMAGE_METADATA=1
 
-RAMFS_COPY_BIN='fw_printenv fw_setenv'
+RAMFS_COPY_BIN='fw_printenv fw_setenv ubinize mkfs.ubifs fwtool'
 RAMFS_COPY_DATA='/etc/fw_env.config /var/lock/fw_printenv.lock'
 
 platform_check_image() {
@@ -82,6 +82,37 @@ platform_do_upgrade() {
 	ubnt,edgerouter-x-sfp)
 		platform_upgrade_ubnt_erx "$1"
 		;;
+        zyxel,lte3301-plus)
+		export IMG="$1"
+		fw_setenv CheckBypass 0
+		fw_setenv Image1Stable 0
+		mkdir -p /tmp/ubifs || reboot
+		[ -f /tmp/sysupgrade.tgz ] && cp /tmp/sysupgrade.tgz /tmp/ubifs/
+		mkfs.ubifs -d /tmp/ubifs -o /tmp/ubifs.img -v -m 2048 -e 124KiB -c20 -l2 || {
+			echo "Failed to generate image with ubifs."
+			reboot
+		}
+		rm -rf /tmp/ubifs
+		cat >/tmp/ubinize.ini <<EOF
+[rootfs_data]
+mode=ubi
+vol_id=0
+vol_type=dynamic
+vol_name=rootfs_data
+vol_flags=autoresize
+image=/tmp/ubifs.img
+EOF
+		ubinize -o /tmp/ubi-final.img -p 131072 -m 2048 -v /tmp/ubinize.ini || {
+			echo "Failed to generate image with ubinize."
+			reboot
+		}
+		rm -rf /tmp/ubifs.img
+		fwtool -i /dev/null -T "$IMG" >/dev/null || {
+			echo "Failed to dump image with fwtool."
+			reboot
+		}
+		(fwtool -i /dev/null -T "$IMG" ; cat /tmp/ubi-final.img) | mtd -r -e /dev/mtd3 write - /dev/mtd3
+		;;
 	zyxel,nr7101)
 		fw_setenv CheckBypass 0
 		fw_setenv Image1Stable 0
-- 
2.20.1




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