bmips: add support for Sercomm AD1018

The Sercomm AD1018 is a wifi fast ethernet router, 2.4 GHz single band with
two internal antennas.

Hardware:
 - SoC: Broadcom BCM6328
 - CPU: single core BMIPS4350 @ 320Mhz
 - RAM: 64 MB (v1) / 128 MB (v2) DDR
 - Flash: 128 MB NAND
 - Ethernet LAN: 4x 100Mbit
 - Wifi 2.4 GHz: miniPCI Broadcom BCM43217 802.11bgn
 - USB: 1x 2.0
 - Buttons: 3x (reset)
 - LEDs: yes
 - UART: yes

Installation via OEM web UI:
  1. Use the admin credentials to login via web UI
  2. Go to Managament->Update firmware and select the OpenWrt CFE firmware
  3. Press "Update Firmware" button and wait some minutes until it finish

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
(cherry picked from commit 38ebb2eafde604ff6d9b0021d1d21208070a2d09)

5 files changed, 353 insertions, 0 deletions

diff --git a/target/linux/bmips/bcm6328/base-files/etc/board.d/01_leds b/target/linux/bmips/bcm6328/base-files/etc/board.d/01_leds
new file mode 100644
index 0000000000..5ece1f7ba1
--- /dev/null
+++ b/target/linux/bmips/bcm6328/base-files/etc/board.d/01_leds
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+. /lib/functions/leds.sh
+. /lib/functions/uci-defaults.sh
+
+board_config_update
+
+case "$(board_name)" in
+sercomm,ad1018)
+	ucidef_set_led_usbport "usb" "USB" "green:usb" "usb1-port1" "usb2-port1"
+	;;
+esac
+
+board_config_flush
+
+exit 0
diff --git a/target/linux/bmips/bcm6328/base-files/etc/board.d/02_network b/target/linux/bmips/bcm6328/base-files/etc/board.d/02_network
index c9c704067e..66f9282e48 100644
--- a/target/linux/bmips/bcm6328/base-files/etc/board.d/02_network
+++ b/target/linux/bmips/bcm6328/base-files/etc/board.d/02_network
@@ -10,6 +10,10 @@ comtrend,ar-5387un)
 	ucidef_set_bridge_device switch
 	ucidef_set_interface_lan "lan1 lan2 lan3 lan4"
 	;;
+sercomm,ad1018)
+	ucidef_set_bridge_device switch
+	ucidef_set_interface_lan "lan1 lan2 lan3 fibre"
+	;;
 esac
 
 board_config_flush
diff --git a/target/linux/bmips/bcm6328/base-files/lib/upgrade/platform.sh b/target/linux/bmips/bcm6328/base-files/lib/upgrade/platform.sh
index 1cf95be26a..d820b20718 100644
--- a/target/linux/bmips/bcm6328/base-files/lib/upgrade/platform.sh
+++ b/target/linux/bmips/bcm6328/base-files/lib/upgrade/platform.sh
@@ -9,6 +9,9 @@ platform_check_image() {
 
 platform_do_upgrade() {
 	case "$(board_name)" in
+	sercomm,ad1018)
+		nand_do_upgrade "$1"
+		;;
 	*)
 		default_do_upgrade "$1"
 		;;
diff --git a/target/linux/bmips/dts/bcm6328-sercomm-ad1018.dts b/target/linux/bmips/dts/bcm6328-sercomm-ad1018.dts
new file mode 100644
index 0000000000..5d18266818
--- /dev/null
+++ b/target/linux/bmips/dts/bcm6328-sercomm-ad1018.dts
@@ -0,0 +1,312 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "bcm6328.dtsi"
+
+/ {
+	model = "Sercomm AD1018";
+	compatible = "sercomm,ad1018", "brcm,bcm6328";
+
+	aliases {
+		led-boot = &led_power_green;
+		led-failsafe = &led_power_green;
+		led-running = &led_power_green;
+		led-upgrade = &led_power_green;
+	};
+
+	keys {
+		compatible = "gpio-keys-polled";
+		poll-interval = <100>;
+
+		wps {
+			label = "wps";
+			gpios = <&gpio 24 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_WPS_BUTTON>;
+			debounce-interval = <60>;
+		};
+
+		wlan {
+			label = "wlan";
+			gpios = <&gpio 25 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_WLAN>;
+			debounce-interval = <60>;
+		};
+
+		reset {
+			label = "reset";
+			gpios = <&gpio 31 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+			debounce-interval = <60>;
+		};
+	};
+
+	bcm432217-sprom {
+		compatible = "brcm,bcma-sprom";
+
+		pci-bus = <1>;
+		pci-dev = <0>;
+
+		nvmem-cells = <&macaddr_cferom_6a0>;
+		nvmem-cell-names = "mac-address";
+		mac-address-increment = <1>;
+
+		brcm,sprom = "brcm/bcm43217-sprom.bin";
+		brcm,sprom-fixups = <6 0x1c00>,
+				    <65 0x1256>,
+				    <96 0x2046>,
+				    <97 0xfe69>,
+				    <98 0x1726>,
+				    <99 0xfa5c>,
+				    <112 0x2046>,
+				    <113 0xfea8>,
+				    <114 0x1978>,
+				    <115 0xfa26>,
+				    <161 0x2222>,
+				    <169 0x2222>,
+				    <171 0x2222>,
+				    <173 0x2222>,
+				    <174 0x4444>,
+				    <175 0x2222>,
+				    <176 0x4444>;
+	};
+};
+
+&ehci {
+	status = "okay";
+};
+
+&ethernet {
+	status = "okay";
+
+	nvmem-cells = <&macaddr_cferom_6a0>;
+	nvmem-cell-names = "mac-address";
+};
+
+&leds {
+	status = "okay";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_leds &pinctrl_serial_led
+		     &pinctrl_ephy0_spd_led &pinctrl_ephy1_act_led
+		     &pinctrl_ephy2_act_led &pinctrl_ephy3_act_led>;
+
+	brcm,serial-leds;
+	brcm,serial-shift-inv;
+	brcm,serial-dat-low;
+
+	led@0 {
+		reg = <0>;
+		active-low;
+		label = "red:internet";
+	};
+
+	led@1 {
+		reg = <1>;
+		active-low;
+		label = "green:internet";
+	};
+
+	led_power_green: led@8 {
+		reg = <8>;
+		active-low;
+		label = "green:power";
+		default-state = "on";
+	};
+
+	led@10 {
+		reg = <10>;
+		active-low;
+		label = "green:adsl";
+	};
+
+	led@11 {
+		reg = <11>;
+		active-low;
+		label = "red:adsl";
+	};
+
+	led@12 {
+		reg = <12>;
+		active-low;
+		label = "green:phone";
+	};
+
+	led@13 {
+		reg = <13>;
+		active-low;
+		label = "green:wps";
+	};
+
+	led@14 {
+		reg = <14>;
+		active-low;
+		label = "green:wifi";
+	};
+
+	led@15 {
+		reg = <15>;
+		active-low;
+		label = "green:usb";
+	};
+
+	led@17 {
+		/* EPHY0 Spd */
+		reg = <17>;
+		brcm,hardware-controlled;
+	};
+};
+
+&ohci {
+	status = "okay";
+};
+
+&pcie {
+	status = "okay";
+};
+
+&pinctrl {
+	pinctrl_leds: leds {
+		function = "led";
+		pins = "gpio0", "gpio1";
+	};
+};
+
+&nflash {
+	status = "okay";
+
+	nandcs@0 {
+		compatible = "brcm,nandcs";
+		reg = <0>;
+		nand-ecc-step-size = <512>;
+		nand-ecc-strength = <15>;
+		nand-on-flash-bbt;
+
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			cferom: partition@0 {
+				label = "cferom";
+				reg = <0x0000000 0x0020000>;
+				read-only;
+			};
+
+			partition@20000 {
+				label = "mmap";
+				reg = <0x0020000 0x00a0000>;
+				read-only;
+			};
+
+			partition@c0000 {
+				label = "cferam1";
+				reg = <0x00c0000 0x0140000>;
+				read-only;
+			};
+
+			partition@200000 {
+				label = "cferam2";
+				reg = <0x0200000 0x0140000>;
+				read-only;
+			};
+
+			partition@340000 {
+				label = "serial";
+				reg = <0x0340000 0x00a0000>;
+				read-only;
+			};
+
+			partition@3e0000 {
+				label = "protect";
+				reg = <0x03e0000 0x0140000>;
+				read-only;
+			};
+
+			partition@6920000 {
+				label = "bootflag1";
+				reg = <0x6920000 0x0140000>;
+				read-only;
+			};
+
+			partition@6a60000 {
+				label = "bootflag2";
+				reg = <0x6a60000 0x0140000>;
+				read-only;
+			};
+
+			partition@520000 {
+				compatible = "sercomm,wfi";
+				label = "wfi";
+				reg = <0x0520000 0x6400000>;
+			};
+
+			partition@6ba0000 {
+				label = "xml_cfg";
+				reg = <0x6ba0000 0x0280000>;
+				read-only;
+			};
+
+			partition@6e20000 {
+				label = "app_dat";
+				reg = <0x6e20000 0x0280000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&switch0 {
+	ports {
+		port@0 {
+			reg = <0>;
+			label = "fibre";
+
+			phy-handle = <&phy1>;
+			phy-mode = "mii";
+		};
+
+		port@1 {
+			reg = <1>;
+			label = "lan3";
+
+			phy-handle = <&phy2>;
+			phy-mode = "mii";
+		};
+
+		port@2 {
+			reg = <2>;
+			label = "lan2";
+
+			phy-handle = <&phy3>;
+			phy-mode = "mii";
+		};
+
+		port@3 {
+			reg = <3>;
+			label = "lan1";
+
+			phy-handle = <&phy4>;
+			phy-mode = "mii";
+		};
+	};
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&usbh {
+	status = "okay";
+};
+
+&cferom {
+	compatible = "nvmem-cells";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	macaddr_cferom_6a0: macaddr@6a0 {
+		reg = <0x6a0 0x6>;
+	};
+};
diff --git a/target/linux/bmips/image/bcm6328.mk b/target/linux/bmips/image/bcm6328.mk
index dfa134df94..ef74410f1e 100644
--- a/target/linux/bmips/image/bcm6328.mk
+++ b/target/linux/bmips/image/bcm6328.mk
@@ -25,3 +25,21 @@ define Device/comtrend_ar-5387un
     kmod-leds-bcm6328
 endef
 TARGET_DEVICES += comtrend_ar-5387un
+
+define Device/sercomm_ad1018
+  $(Device/sercomm-nand)
+  DEVICE_VENDOR := Sercomm
+  DEVICE_MODEL := AD1018
+  CHIP_ID := 6328
+  BLOCKSIZE := 128k
+  PAGESIZE := 2048
+  SUBPAGESIZE := 512
+  VID_HDR_OFFSET := 2048
+  DEVICE_PACKAGES += $(USB2_PACKAGES) \
+    $(B43_PACKAGES) broadcom-43217-sprom \
+    kmod-leds-bcm6328
+  SERCOMM_FSVER := 1001
+  SERCOMM_HWVER := 1415153
+  SERCOMM_SWVER := 3013
+endef
+TARGET_DEVICES += sercomm_ad1018