ipq40xx: add support for Linksys EA6350v3

Specifications:
SOC: Qualcomm IPQ4018
RAM: 256 MiB Samsung K4B2G1646F-BYK0
FLASH1: MX25L1605D 2 MB
FLASH2: Winbond W25N01GV 128Mb
ETH: Qualcomm QCA8075
WLAN0: Qualcomm Atheros QCA4018 2.4GHz 802.11b/g/n 2x2
WLAN1: Qualcomm Atheros QCA4018 5GHz 802.11n/ac W2 2x2
INPUT: WPS, Reset
LED: Status - Green
SERIAL: Header at J19, Beneath DC Power Jack
        1-VCC ; 2-TX ; 3-RX; 4-GND;
        Serial 115200-8-N-1.

Tested and working:
- USB (requires extra packages)
- LAN Ethernet (Correct MAC-address)
- WAN Ethernet (Correct MAC-address)
- 2.4 GHz WiFi (Correct MAC-address)
- 5 GHz WiFi (Correct MAC-address)
- Factory installation from Web UI
- OpenWRT sysupgrade
- LED
- Reset Button

Need Testing:
- WPS button

Install via Web UI:
- Attach to a LAN port on the router.
- Connect to the Linksys Smart WiFi Page (default 192.168.1.1) and login
- Select the connectivity tab on the left
- In the manual update box on the right
- Select browse, and browse to
  openwrt-ipq40xx-linksys_ea6350v3-squashfs-factory.bin
- Click update.
- Read and accept the warning
- The router LED will start blinking. When the router LED goes solid, you
  can now navigate to 192.168.1.1 to your new OpenWrt installation.

Sysupgrade:
- Flash the sysupgrade image as usual. Please: try to do a reset everytime
  you can (doing it with LuCI is easy and can be done in the same step).

Recovery (Automatic):
- If the device fails to boot after install or upgrade, whilst the unit is
  turned on:
1 - Wait 15 seconds
2 - Switch Off and Wait 10 seconds
3 - Switch on
4 - Repeat steps 1 to 3, 3 times then go to 5.
5 - U-boot will have now erased the failed update and switched back to the
    last working firmware - you should be able to access your router on
    LAN.

Recovery (Manual):
- The steps for manual recovery are the same as the generic u-boot tftp
  client method.

Back To Stock:
- Use the generic recovery using the tftp client method to flash the
  "civic.img". Also you can strip-and-pad the original image and use
  the generic "mtd" method by flashing over the "kernel" partition.
* Just be careful to flash in the partition that the device is currently
  booted.

Signed-off-by: Ryan Pannell <ryan@osukl.com>
Signed-off-by: Oever González <notengobattery@gmail.com>
[minor edits, removed second compatible of nand, added dtb entry to 4.19]
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>

target/linux/ipq40xx/base-files/etc/board.d/02_network

@@ -45,6 +45,15 @@ glinet,gl-b1300)
 	ucidef_add_switch "switch0" \
 		"0u@eth0" "3:lan" "4:lan"
 	;;
+linksys,ea6350v3)
+	wan_mac_addr=$(mtd_get_mac_ascii devinfo hw_mac_addr)
+	lan_mac_addr=$(macaddr_add $(mtd_get_mac_ascii devinfo hw_mac_addr) +1)
+	ucidef_set_interfaces_lan_wan "eth0" "eth1"
+	ucidef_add_switch "switch0" \
+		"0u@eth0" "1:lan" "2:lan" "3:lan" "4:lan"
+	ucidef_set_interface_macaddr "wan" "$wan_mac_addr"
+	ucidef_set_interface_macaddr "lan" "$lan_mac_addr"
+	;;
 openmesh,a42 |\
 openmesh,a62)
 	ucidef_set_interfaces_lan_wan "eth1" "eth0"

target/linux/ipq40xx/base-files/etc/hotplug.d/firmware/11-ath10k-caldata

@@ -115,6 +115,7 @@ case "$FIRMWARE" in
 	case "$board" in
 	8dev,jalapeno |\
 	glinet,gl-b1300 |\
+	linksys,ea6350v3 |\
 	qcom,ap-dk01.1-c1)
 		ath10kcal_extract "ART" 4096 12064
 		;;
@@ -152,6 +153,7 @@ case "$FIRMWARE" in
 	case "$board" in
 	8dev,jalapeno |\
 	glinet,gl-b1300 |\
+	linksys,ea6350v3 |\
 	qcom,ap-dk01.1-c1)
 		ath10kcal_extract "ART" 20480 12064
 		;;

target/linux/ipq40xx/base-files/etc/init.d/zlinksys_recovery

@@ -0,0 +1,34 @@
+#!/bin/sh /etc/rc.common
+#
+# This script sets auto_recovery to "yes" and resets the boot counter to 0.
+# As a golden rule, this should be the latest script to run at boot. For a
+# developer snapshot, it is fine to set auto_recovery here. But for a stable
+# release, this script must in fact turn off auto_recovery.
+#
+# Why? Because the custom sysupgrade script for the device will turn on
+# auto_recovery to "yes". And it's the job of this script to set the
+# boot boot_count to 0 and then disable auto_recovery, as that condition
+# means that the stable release went well.
+#
+# I have to repeat: this script should be changed for stable releases.
+
+START=99
+boot() {
+	. /lib/functions.sh
+
+	case $(board_name) in
+		linksys,ea6350v3)
+			# make sure auto_recovery in uboot is always on
+			IS_AUTO_RECOVERY="$(fw_printenv -n auto_recovery)"
+			if [ "$IS_AUTO_RECOVERY" != "yes" ] ; then
+				fw_setenv auto_recovery yes
+				echo "Linksys EA6350v3: fw_setenv: auto_recovery has been set to yes"
+			fi
+			# reset the boot counter
+			fw_setenv boot_count 0
+			mtd resetbc s_env
+			echo "Linksys EA6350v3: boot counter has been reset"
+			echo "Linksys EA6350v3: boot_part=$(fw_printenv -n boot_part)"
+			;;
+	esac
+}

target/linux/ipq40xx/base-files/lib/upgrade/linksys.sh

@@ -0,0 +1,95 @@
+linksys_get_target_firmware() {
+	cur_boot_part=$(/usr/sbin/fw_printenv -n boot_part)
+	target_firmware=""
+	if [ "$cur_boot_part" = "1" ]; then
+		# current primary boot - update alt boot
+		target_firmware="alt_kernel"
+		fw_setenv boot_part 2
+		# In the Linksys EA6350v3, it is enough to set the boot_part as the boot command line is
+		# bootcmd=if test $boot_part = 1; then run bootpart1; else run bootpart2; fi
+		# - You probably want to use that if your device's uboot does not eval bootcmd
+		#fw_setenv bootcmd "run altnandboot"
+	elif [ "$cur_boot_part" = "2" ]; then
+		# current alt boot - update primary boot
+		target_firmware="kernel"
+		fw_setenv boot_part 1
+		#fw_setenv bootcmd "run nandboot"
+	fi
+
+	# re-enable recovery so we get back if the new firmware is broken
+	fw_setenv auto_recovery yes
+	# see /etc/init.d/zlinksys_recovery
+
+	echo "$target_firmware"
+}
+
+linksys_get_root_magic() {
+	(get_image "$@" | dd skip=786432 bs=4 count=1 | hexdump -v -n 4 -e '1/1 "%02x"') 2>/dev/null
+}
+
+platform_do_upgrade_linksys() {
+	local magic_long="$(get_magic_long "$1")"
+
+	mkdir -p /var/lock
+	local part_label="$(linksys_get_target_firmware)"
+	touch /var/lock/fw_printenv.lock
+
+	if [ ! -n "$part_label" ]; then
+		echo "cannot find target partition"
+		exit 1
+	fi
+
+	local target_mtd=$(find_mtd_part $part_label)
+
+	[ "$magic_long" = "73797375" ] && {
+		CI_KERNPART="$part_label"
+		if [ "$part_label" = "kernel" ]; then
+			CI_UBIPART="rootfs"
+		else
+			CI_UBIPART="alt_rootfs"
+		fi
+
+		# remove "squashfs" vol (in case we are flashing over a stock image, which is also UBI)
+
+		local mtdnum="$( find_mtd_index "$CI_UBIPART" )"
+		if [ ! "$mtdnum" ]; then
+			echo "cannot find ubi mtd partition $CI_UBIPART"
+			return 1
+		fi
+
+		local ubidev="$( nand_find_ubi "$CI_UBIPART" )"
+		if [ ! "$ubidev" ]; then
+			ubiattach -m "$mtdnum"
+			sync
+			ubidev="$( nand_find_ubi "$CI_UBIPART" )"
+		fi
+
+		if [ "$ubidev" ]; then
+			local squash_ubivol="$( nand_find_volume $ubidev squashfs )"
+			# kill volume
+			[ "$squash_ubivol" ] && ubirmvol /dev/$ubidev -N squashfs || true
+		fi
+
+		# complete std upgrade
+		nand_upgrade_tar "$1"
+	}
+	[ "$magic_long" = "27051956" ] && {
+		# This magic is for a uImage (which is a sysupgrade image)
+		# check firmwares' rootfs types
+		local oldroot="$(linksys_get_root_magic $target_mtd)"
+		local newroot="$(linksys_get_root_magic "$1")"
+
+		if [ "$newroot" = "55424923" -a "$oldroot" = "55424923" ]; then
+			# we're upgrading from a firmware with UBI to one with UBI
+			# erase everything to be safe
+			# - Is that really needed? Won't remove (or comment) the if, because it may be needed in a future device.
+			#mtd erase $part_label
+			#get_image "$1" | mtd -n write - $part_label
+			echo "writing \"$1\" UBI image to \"$part_label\" (UBI)..."
+			get_image "$1" | mtd write - $part_label
+		else
+			echo "writing \"$1\" image to \"$part_label\""
+			get_image "$1" | mtd write - $part_label
+		fi
+	}
+}

target/linux/ipq40xx/base-files/lib/upgrade/platform.sh

@@ -54,6 +54,9 @@ platform_do_upgrade() {
 		CI_KERNPART="linux"
 		nand_do_upgrade "$1"
 		;;
+	linksys,ea6350v3)
+		platform_do_upgrade_linksys "$ARGV"
+		;;
 	openmesh,a42 |\
 	openmesh,a62)
 		PART_NAME="inactive"

target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4018-ea6350v3.dts

@@ -0,0 +1,273 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "qcom-ipq4019.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/soc/qcom,tcsr.h>
+
+/ {
+	model = "Linksys EA6350v3";
+	compatible = "linksys,ea6350v3", "qcom,ipq4019";
+
+	aliases {
+		led-boot = &power;
+		led-failsafe = &power;
+		led-running = &power;
+		led-upgrade = &power;
+	};
+
+	soc {
+		mdio@90000 {
+			status = "okay";
+		};
+
+		ess-psgmii@98000 {
+			status = "okay";
+		};
+
+		tcsr@1949000 {
+			compatible = "qcom,tcsr";
+			reg = <0x1949000 0x100>;
+			qcom,wifi_glb_cfg = <TCSR_WIFI_GLB_CFG>;
+		};
+
+		tcsr@194b000 {
+			compatible = "qcom,tcsr";
+			reg = <0x194b000 0x100>;
+			qcom,usb-hsphy-mode-select = <TCSR_USB_HSPHY_HOST_MODE>;
+		};
+
+		ess_tcsr@1953000 {
+			compatible = "qcom,tcsr";
+			reg = <0x1953000 0x1000>;
+			qcom,ess-interface-select = <TCSR_ESS_PSGMII>;
+		};
+
+		tcsr@1957000 {
+			compatible = "qcom,tcsr";
+			reg = <0x1957000 0x100>;
+			qcom,wifi_noc_memtype_m0_m2 = <TCSR_WIFI_NOC_MEMTYPE_M0_M2>;
+		};
+
+		usb2@60f8800 {
+			status = "okay";
+		};
+
+		usb3@8af8800 {
+			status = "okay";
+		};
+
+		crypto@8e3a000 {
+			status = "okay";
+		};
+
+		watchdog@b017000 {
+			status = "okay";
+		};
+
+		ess-switch@c000000 {
+			status = "okay";
+		};
+
+		edma@c080000 {
+			status = "okay";
+		};
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			gpios = <&tlmm 63 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+
+		wps {
+			label = "wps";
+			gpios = <&tlmm 0 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		power: status {
+			label = "EA6350v3:green:status";
+			gpios = <&tlmm 2 GPIO_ACTIVE_HIGH>;
+		};
+	};
+};
+
+&blsp1_uart1 {
+	pinctrl-0 = <&serial_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&cryptobam {
+	status = "okay";
+};
+
+&wifi0 {
+	status = "okay";
+	qcom,ath10k-calibration-variant = "linksys-ea6350v3";
+};
+
+&wifi1 {
+	status = "okay";
+	qcom,ath10k-calibration-variant = "linksys-ea6350v3";
+};
+
+
+&blsp_dma {
+	status = "okay";
+};
+
+&tlmm {
+	serial_pins: serial_pinmux {
+		mux {
+			pins = "gpio60", "gpio61";
+			function = "blsp_uart0";
+			bias-disable;
+		};
+	};
+
+	spi_0_pins: spi_0_pinmux {
+		mux {
+			function = "blsp_spi0";
+			pins = "gpio55", "gpio56", "gpio57";
+			drive-strength = <12>;
+			bias-disable;
+		};
+
+		mux_cs {
+			function = "gpio";
+			pins = "gpio54", "gpio59";
+			drive-strength = <2>;
+			bias-disable;
+			output-high;
+		};
+	};
+};
+
+&blsp1_spi1 { /* BLSP1 QUP1 */
+	pinctrl-0 = <&spi_0_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+	cs-gpios = <&tlmm 54 GPIO_ACTIVE_HIGH>,
+		   <&tlmm 59 GPIO_ACTIVE_HIGH>;
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <24000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			SBL1@0 {
+				label = "SBL1";
+				reg = <0x00000000 0x00040000>;
+				read-only;
+			};
+			MBIB@40000 {
+				label = "MIBIB";
+				reg = <0x00040000 0x00020000>;
+				read-only;
+			};
+			QSEE@60000 {
+				label = "QSEE";
+				reg = <0x00060000 0x00060000>;
+				read-only;
+			};
+			CDT@c0000 {
+				label = "CDT";
+				reg = <0x000c0000 0x00010000>;
+				read-only;
+			};
+			APPSBLENV@d0000 {
+				label = "APPSBLENV";
+				reg = <0x000d0000 0x00010000>;
+				read-only;
+			};
+			APPSBL@e0000 {
+				label = "APPSBL"; /* uboot */
+				reg = <0x000e0000 0x00080000>;
+				read-only;
+			};
+			ART@160000 {
+				label = "ART";
+				reg = <0x00160000 0x00010000>;
+				read-only;
+			};
+			u_env@170000 {
+				label = "u_env";
+				reg = <0x00170000 0x00020000>;
+			};
+			s_env@190000 {
+				label = "s_env";
+				reg = <0x00190000 0x00020000>;
+			};
+			devinfo@1b0000 {
+				label = "devinfo";
+				reg = <0x001b0000 0x00010000>;
+			};
+			/* 0x001c0000 - 0x00200000 unused */
+		};
+	};
+
+	flash@1 {
+		status = "okay";
+		compatible = "spinand,mt29f", "w25n01gv";
+		reg = <1>;
+		spi-max-frequency = <24000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			kernel@0 {
+				label = "kernel";
+				reg = <0x00000000 0x02800000>;
+			};
+			rootfs@300000 {
+				label = "rootfs";
+				reg = <0x00300000 0x02500000>;
+			};
+			alt_kernel@2800000 {
+				label = "alt_kernel";
+				reg = <0x02800000 0x02800000>;
+			};
+			alt_rootfs@2b00000 {
+				label = "alt_rootfs";
+				reg = <0x02b00000 0x02500000>;
+			};
+			sysdiag@5000000 {
+				label = "sysdiag";
+				reg = <0x05000000 0x00100000>;
+			};
+			syscfg@5100000 {
+				label = "syscfg";
+				reg = <0x05100000 0x02F00000>;
+			};
+			/* 0x00000000 - 0x08000000: 128 MiB */
+		};
+	};
+};
+
+&usb3_ss_phy {
+	status = "okay";
+};
+
+&usb3_hs_phy {
+	status = "okay";
+};
+
+&usb2_hs_phy {
+	status = "okay";
+};

target/linux/ipq40xx/files-4.19/arch/arm/boot/dts/qcom-ipq4018-ea6350v3.dts

@@ -0,0 +1,273 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "qcom-ipq4019.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/soc/qcom,tcsr.h>
+
+/ {
+	model = "Linksys EA6350v3";
+	compatible = "linksys,ea6350v3";
+
+	aliases {
+		led-boot = &power;
+		led-failsafe = &power;
+		led-running = &power;
+		led-upgrade = &power;
+	};
+
+	soc {
+		mdio@90000 {
+			status = "okay";
+		};
+
+		ess-psgmii@98000 {
+			status = "okay";
+		};
+
+		tcsr@1949000 {
+			compatible = "qcom,tcsr";
+			reg = <0x1949000 0x100>;
+			qcom,wifi_glb_cfg = <TCSR_WIFI_GLB_CFG>;
+		};
+
+		tcsr@194b000 {
+			compatible = "qcom,tcsr";
+			reg = <0x194b000 0x100>;
+			qcom,usb-hsphy-mode-select = <TCSR_USB_HSPHY_HOST_MODE>;
+		};
+
+		ess_tcsr@1953000 {
+			compatible = "qcom,tcsr";
+			reg = <0x1953000 0x1000>;
+			qcom,ess-interface-select = <TCSR_ESS_PSGMII>;
+		};
+
+		tcsr@1957000 {
+			compatible = "qcom,tcsr";
+			reg = <0x1957000 0x100>;
+			qcom,wifi_noc_memtype_m0_m2 = <TCSR_WIFI_NOC_MEMTYPE_M0_M2>;
+		};
+
+		usb2@60f8800 {
+			status = "okay";
+		};
+
+		usb3@8af8800 {
+			status = "okay";
+		};
+
+		crypto@8e3a000 {
+			status = "okay";
+		};
+
+		watchdog@b017000 {
+			status = "okay";
+		};
+
+		ess-switch@c000000 {
+			status = "okay";
+		};
+
+		edma@c080000 {
+			status = "okay";
+		};
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			gpios = <&tlmm 63 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+
+		wps {
+			label = "wps";
+			gpios = <&tlmm 0 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		power: status {
+			label = "EA6350v3:green:status";
+			gpios = <&tlmm 2 GPIO_ACTIVE_HIGH>;
+		};
+	};
+};
+
+&blsp1_uart1 {
+	pinctrl-0 = <&serial_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&cryptobam {
+	status = "okay";
+};
+
+&wifi0 {
+	status = "okay";
+	qcom,ath10k-calibration-variant = "linksys-ea6350v3";
+};
+
+&wifi1 {
+	status = "okay";
+	qcom,ath10k-calibration-variant = "linksys-ea6350v3";
+};
+
+
+&blsp_dma {
+	status = "okay";
+};
+
+&tlmm {
+	serial_pins: serial_pinmux {
+		mux {
+			pins = "gpio60", "gpio61";
+			function = "blsp_uart0";
+			bias-disable;
+		};
+	};
+
+	spi_0_pins: spi_0_pinmux {
+		mux {
+			function = "blsp_spi0";
+			pins = "gpio55", "gpio56", "gpio57";
+			drive-strength = <12>;
+			bias-disable;
+		};
+
+		mux_cs {
+			function = "gpio";
+			pins = "gpio54", "gpio59";
+			drive-strength = <2>;
+			bias-disable;
+			output-high;
+		};
+	};
+};
+
+&blsp1_spi1 { /* BLSP1 QUP1 */
+	pinctrl-0 = <&spi_0_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+	cs-gpios = <&tlmm 54 GPIO_ACTIVE_HIGH>,
+		   <&tlmm 59 GPIO_ACTIVE_HIGH>;
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <24000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			SBL1@0 {
+				label = "SBL1";
+				reg = <0x00000000 0x00040000>;
+				read-only;
+			};
+			MBIB@40000 {
+				label = "MIBIB";
+				reg = <0x00040000 0x00020000>;
+				read-only;
+			};
+			QSEE@60000 {
+				label = "QSEE";
+				reg = <0x00060000 0x00060000>;
+				read-only;
+			};
+			CDT@c0000 {
+				label = "CDT";
+				reg = <0x000c0000 0x00010000>;
+				read-only;
+			};
+			APPSBLENV@d0000 {
+				label = "APPSBLENV";
+				reg = <0x000d0000 0x00010000>;
+				read-only;
+			};
+			APPSBL@e0000 {
+				label = "APPSBL"; /* uboot */
+				reg = <0x000e0000 0x00080000>;
+				read-only;
+			};
+			ART@160000 {
+				label = "ART";
+				reg = <0x00160000 0x00010000>;
+				read-only;
+			};
+			u_env@170000 {
+				label = "u_env";
+				reg = <0x00170000 0x00020000>;
+			};
+			s_env@190000 {
+				label = "s_env";
+				reg = <0x00190000 0x00020000>;
+			};
+			devinfo@1b0000 {
+				label = "devinfo";
+				reg = <0x001b0000 0x00010000>;
+			};
+			/* 0x001c0000 - 0x00200000 unused */
+		};
+	};
+
+	flash@1 {
+		status = "okay";
+		compatible = "spi-nand";
+		reg = <1>;
+		spi-max-frequency = <24000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			kernel@0 {
+				label = "kernel";
+				reg = <0x00000000 0x02800000>;
+			};
+			rootfs@300000 {
+				label = "rootfs";
+				reg = <0x00300000 0x02500000>;
+			};
+			alt_kernel@2800000 {
+				label = "alt_kernel";
+				reg = <0x02800000 0x02800000>;
+			};
+			alt_rootfs@2b00000 {
+				label = "alt_rootfs";
+				reg = <0x02b00000 0x02500000>;
+			};
+			sysdiag@5000000 {
+				label = "sysdiag";
+				reg = <0x05000000 0x00100000>;
+			};
+			syscfg@5100000 {
+				label = "syscfg";
+				reg = <0x05100000 0x02F00000>;
+			};
+			/* 0x00000000 - 0x08000000: 128 MiB */
+		};
+	};
+};
+
+&usb3_ss_phy {
+	status = "okay";
+};
+
+&usb3_hs_phy {
+	status = "okay";
+};
+
+&usb2_hs_phy {
+	status = "okay";
+};

target/linux/ipq40xx/image/Makefile

@@ -26,6 +26,12 @@ define Device/FitImageLzma
 	KERNEL_NAME := Image
 endef
 
+define Device/FitzImage
+	KERNEL_SUFFIX := -fit-zImage.itb
+	KERNEL = kernel-bin | fit none $$(DTS_DIR)/$$(DEVICE_DTS).dtb
+	KERNEL_NAME := zImage
+endef
+
 define Device/UbiFit
 	KERNEL_IN_UBI := 1
 	IMAGES := nand-factory.ubi nand-sysupgrade.bin
@@ -131,6 +137,41 @@ define Device/glinet_gl-b1300
 endef
 TARGET_DEVICES += glinet_gl-b1300
 
+define Device/linksys_ea6350v3
+	# The Linksys EA6350v3 has a uboot bootloader that does not
+	# support either booting lzma kernel images nor booting UBI
+	# partitions. This uboot, however, supports raw kernel images and
+	# gzipped images.
+	#
+	# As for the time of writing this, the device will boot the kernel
+	# from a fixed address with a fixed length of 3MiB. Also, the
+	# device has a hard-coded kernel command line that requieres the
+	# rootfs and alt_rootfs to be in mtd11 and mtd13 respectively.
+	# Oh... and the kernel partition overlaps with the rootfs
+	# partition (the same for alt_kernel and alt_rootfs).
+	#
+	# If you are planing re-partitioning the device, you may want to
+	# keep those details in mind:
+	# 1. The kernel adresses you should honor are 0x00000000 and
+	#    0x02800000 respectively.
+	# 2. The kernel size (plus the dtb) cannot exceed 3.00MiB in size.
+	# 3. You can use 'zImage', but not a raw 'Image' packed with lzma.
+	# 4. The kernel command line from uboot is harcoded to boot with
+	#    rootfs either in mtd11 or mtd13.
+	$(call Device/FitzImage)
+	DEVICE_TITLE := Linksys EA6350v3
+	DEVICE_DTS := qcom-ipq4018-ea6350v3
+	BLOCKSIZE := 128k
+	PAGESIZE := 2048
+	KERNEL_SIZE := 3145728
+	IMAGE_SIZE := 38797312
+	UBINIZE_OPTS := -E 5
+	IMAGES := factory.bin sysupgrade.bin
+	IMAGE/factory.bin := append-kernel | append-uImage-fakehdr filesystem | pad-to $$$${KERNEL_SIZE} | append-ubi | linksys-image type=EA6350v3
+	DEVICE_PACKAGES := ipq-wifi-linksys_ea6350v3 uboot-envtools
+endef
+TARGET_DEVICES += linksys_ea6350v3
+
 define Device/meraki_mr33
 	$(call Device/FitImage)
 	DEVICE_DTS := qcom-ipq4029-mr33

target/linux/ipq40xx/patches-4.14/901-arm-boot-add-dts-files.patch

@@ -10,11 +10,12 @@ Signed-off-by: John Crispin <john@phrozen.org>
 
 --- a/arch/arm/boot/dts/Makefile
 +++ b/arch/arm/boot/dts/Makefile
-@@ -697,7 +697,21 @@ dtb-$(CONFIG_ARCH_QCOM) += \
+@@ -697,7 +697,22 @@ dtb-$(CONFIG_ARCH_QCOM) += \
  	qcom-apq8074-dragonboard.dtb \
  	qcom-apq8084-ifc6540.dtb \
  	qcom-apq8084-mtp.dtb \
 +	qcom-ipq4018-a42.dtb \
++	qcom-ipq4018-ea6350v3.dtb \
 +	qcom-ipq4018-eap1300.dtb \
 +	qcom-ipq4018-ex6100v2.dtb \
 +	qcom-ipq4018-ex6150v2.dtb \

target/linux/ipq40xx/patches-4.19/901-arm-boot-add-dts-files.patch

@@ -10,11 +10,12 @@ Signed-off-by: John Crispin <john@phrozen.org>
 
 --- a/arch/arm/boot/dts/Makefile
 +++ b/arch/arm/boot/dts/Makefile
-@@ -785,11 +785,24 @@ dtb-$(CONFIG_ARCH_QCOM) += \
+@@ -785,11 +785,25 @@ dtb-$(CONFIG_ARCH_QCOM) += \
  	qcom-apq8074-dragonboard.dtb \
  	qcom-apq8084-ifc6540.dtb \
  	qcom-apq8084-mtp.dtb \
 +	qcom-ipq4018-a42.dtb \
++	qcom-ipq4018-ea6350v3.dtb \
 +	qcom-ipq4018-eap1300.dtb \
 +	qcom-ipq4018-ex6100v2.dtb \
 +	qcom-ipq4018-ex6150v2.dtb \