kirkwood: add support for ipTIME NAS1

ipTIME NAS1 is a 1-bay NAS, based on Marvell Kirkwood SoC.

Specifications:
* SoC: 88F6281
* RAM: 256 MiB
* Flash: SPI NOR 16 MiB
* SATA: 1x 3Gb/s
* Ethernet: 1x 1GbE
* USB: 1x 2.0
* Fan: 2 speed level
* UART: JP1 (115200 8N1)
  * Pinout: [3V3] (TXD) (RXD) (GND)

Notes:
* There are several variants of the model name: "NAS-I", "NASI", "NAS1".
  Here "NAS1" is adopted for consistent naming scheme.
* The reset button is also a USB copy button in stock FW,
  but in this patch the former is the only default behavior.

Installation via web interface:
1.  Flash sysupgrade image through the stock web interface.

Revert to stock firmware:
1.  Perform sysupgrade with stock image.

Signed-off-by: Sungbo Eo <mans0n@gorani.run>

7 files changed, 270 insertions, 0 deletions

diff --git a/include/image-commands.mk b/include/image-commands.mk
index 158af853a5..eda3fee94b 100644
--- a/include/image-commands.mk
+++ b/include/image-commands.mk
@@ -295,6 +295,11 @@ define Build/install-dtb
 	)
 endef
 
+define Build/iptime-naspkg
+	$(STAGING_DIR_HOST)/bin/iptime-naspkg $(1) $@ $@.new
+	mv $@.new $@
+endef
+
 define Build/jffs2
 	rm -rf $(KDIR_TMP)/$(DEVICE_NAME)/jffs2 && \
 		mkdir -p $(KDIR_TMP)/$(DEVICE_NAME)/jffs2/$$(dirname $(1)) && \
diff --git a/target/linux/kirkwood/base-files/etc/board.d/02_network b/target/linux/kirkwood/base-files/etc/board.d/02_network
index 773730e642..df38694f40 100644
--- a/target/linux/kirkwood/base-files/etc/board.d/02_network
+++ b/target/linux/kirkwood/base-files/etc/board.d/02_network
@@ -22,6 +22,7 @@ kirkwood_setup_interfaces()
 	globalscale,sheevaplug|\
 	iom,iconnect-1.1|\
 	iom,ix2-200|\
+	iptime,nas1|\
 	netgear,readynas-duo-v2|\
 	raidsonic,ib-nas62x0|\
 	seagate,blackarmor-nas220|\
@@ -55,6 +56,10 @@ kirkwood_setup_macs()
 	local label_mac=""
 
 	case "$board" in
+	iptime,nas1)
+		lan_mac=$(mtd_get_mac_binary u-boot 0x3ffa8)
+		label_mac=$lan_mac
+		;;
 	linksys,e4200-v2|\
 	linksys,ea3500|\
 	linksys,ea4500)
diff --git a/target/linux/kirkwood/base-files/lib/preinit/07_set_iface_mac b/target/linux/kirkwood/base-files/lib/preinit/07_set_iface_mac
index 2a52b7962f..393c540d97 100644
--- a/target/linux/kirkwood/base-files/lib/preinit/07_set_iface_mac
+++ b/target/linux/kirkwood/base-files/lib/preinit/07_set_iface_mac
@@ -27,6 +27,10 @@ preinit_set_mac_address() {
 		ip link set dev port3 address $(macaddr_add $mac 2) 2>/dev/null
 		ip link set dev port4 address $(macaddr_add $mac 3) 2>/dev/null
 		;;
+	iptime,nas1)
+		mac=$(mtd_get_mac_binary u-boot 0x3ffa8)
+		ip link set dev eth0 address $mac 2>/dev/null
+		;;
 	esac
 }
 
diff --git a/target/linux/kirkwood/base-files/lib/upgrade/platform.sh b/target/linux/kirkwood/base-files/lib/upgrade/platform.sh
index e2f6dec44a..9885bf7d31 100644
--- a/target/linux/kirkwood/base-files/lib/upgrade/platform.sh
+++ b/target/linux/kirkwood/base-files/lib/upgrade/platform.sh
@@ -1,6 +1,7 @@
 RAMFS_COPY_BIN='fw_printenv fw_setenv strings'
 RAMFS_COPY_DATA='/etc/fw_env.config /var/lock/fw_printenv.lock'
 
+PART_NAME=firmware
 REQUIRE_IMAGE_METADATA=1
 
 platform_check_image() {
@@ -33,6 +34,9 @@ platform_do_upgrade() {
 			return 1
 		fi
 		;;
+	iptime,nas1)
+		default_do_upgrade "$1"
+		;;
 	linksys,e4200-v2|\
 	linksys,ea3500|\
 	linksys,ea4500)
diff --git a/target/linux/kirkwood/config-5.10 b/target/linux/kirkwood/config-5.10
index f80a7d8f20..ae9c3b0999 100644
--- a/target/linux/kirkwood/config-5.10
+++ b/target/linux/kirkwood/config-5.10
@@ -122,6 +122,7 @@ CONFIG_HARDIRQS_SW_RESEND=y
 CONFIG_HAS_DMA=y
 CONFIG_HAS_IOMEM=y
 CONFIG_HAS_IOPORT_MAP=y
+CONFIG_HWMON=y
 CONFIG_HW_RANDOM=y
 CONFIG_HW_RANDOM_OMAP=y
 CONFIG_HZ_FIXED=0
@@ -163,6 +164,9 @@ CONFIG_MTD_NAND_ECC_SW_HAMMING=y
 # CONFIG_MTD_NAND_MARVELL is not set
 CONFIG_MTD_NAND_ORION=y
 CONFIG_MTD_RAW_NAND=y
+CONFIG_MTD_SPI_NOR=y
+CONFIG_MTD_SPLIT_FIRMWARE=y
+CONFIG_MTD_SPLIT_UIMAGE_FW=y
 CONFIG_MTD_UBI=y
 CONFIG_MTD_UBI_BEB_LIMIT=20
 CONFIG_MTD_UBI_BLOCK=y
@@ -248,6 +252,7 @@ CONFIG_SPARSE_IRQ=y
 CONFIG_SPI=y
 # CONFIG_SPI_ARMADA_3700 is not set
 CONFIG_SPI_MASTER=y
+CONFIG_SPI_MEM=y
 CONFIG_SPI_ORION=y
 CONFIG_SPLIT_PTLOCK_CPUS=999999
 CONFIG_SRAM=y
@@ -259,6 +264,7 @@ CONFIG_THERMAL=y
 CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
 CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS=0
 CONFIG_THERMAL_GOV_STEP_WISE=y
+CONFIG_THERMAL_HWMON=y
 CONFIG_THERMAL_OF=y
 CONFIG_TICK_CPU_ACCOUNTING=y
 CONFIG_TIMER_OF=y
diff --git a/target/linux/kirkwood/files/arch/arm/boot/dts/kirkwood-nas1.dts b/target/linux/kirkwood/files/arch/arm/boot/dts/kirkwood-nas1.dts
new file mode 100644
index 0000000000..a8d86406b5
--- /dev/null
+++ b/target/linux/kirkwood/files/arch/arm/boot/dts/kirkwood-nas1.dts
@@ -0,0 +1,231 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/dts-v1/;
+
+#include "kirkwood.dtsi"
+#include "kirkwood-6281.dtsi"
+
+/ {
+	model = "ipTIME NAS1";
+	compatible = "iptime,nas1", "marvell,kirkwood-88f6281", "marvell,kirkwood";
+
+	aliases {
+		serial0 = &uart0;
+		led-boot = &led_ready;
+		led-failsafe = &led_ready;
+		led-running = &led_ready;
+		led-upgrade = &led_ready;
+	};
+
+	chosen {
+		/*
+		 * "root" argument from the stock bootloader should be ignored
+		 * as it'll prevent the kernel from finding the correct rootfs.
+		 */
+		bootargs-append = " console=ttyS0,115200 root=";
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x00000000 0x10000000>;
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		pinctrl-0 = <&pmx_led>;
+		pinctrl-names = "default";
+
+		hdd {
+			label = "blue:hdd";
+			gpios = <&gpio1 3 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "ata1";
+		};
+
+		usb {
+			label = "blue:usb";
+			gpios = <&gpio1 13 GPIO_ACTIVE_LOW>;
+			trigger-sources = <&ehci_port1>;
+			linux,default-trigger = "usbport";
+		};
+
+		led_ready: ready {
+			label = "blue:ready";
+			gpios = <&gpio1 14 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		pinctrl-0 = <&pmx_button>;
+		pinctrl-names = "default";
+
+		reset-copy {
+			label = "Reset/Copy Button";
+			linux,code = <KEY_RESTART>;
+			gpios = <&gpio1 12 GPIO_ACTIVE_LOW>;
+		};
+
+		power {
+			label = "Power Button";
+			linux,code = <KEY_POWER>;
+			gpios = <&gpio1 16 GPIO_ACTIVE_HIGH>;
+		};
+	};
+
+	gpio-fan {
+		compatible = "gpio-fan";
+
+		pinctrl-0 = <&pmx_fan>;
+		pinctrl-names = "default";
+		gpios = <&gpio1  9 GPIO_ACTIVE_HIGH>,
+		        <&gpio1 10 GPIO_ACTIVE_HIGH>;
+		/* We don't know the exact rpm, just use dummy values here. */
+		gpio-fan,speed-map = <0 0>, <1 1>, <2 2>;
+		#cooling-cells = <2>;
+	};
+
+	gpio-poweroff {
+		compatible = "gpio-poweroff";
+		gpios = <&pca9536 0 GPIO_ACTIVE_LOW>;
+	};
+
+	regulators {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		pinctrl-0 = <&pmx_usb_vbus>;
+		pinctrl-names = "default";
+
+		regulator@1 {
+			compatible = "regulator-fixed";
+			reg = <1>;
+			regulator-name = "USB Power";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			enable-active-high;
+			regulator-always-on;
+			gpio = <&gpio1 11 GPIO_ACTIVE_HIGH>;
+		};
+	};
+};
+
+&pinctrl {
+	pmx_led: pmx-led {
+		marvell,pins = "mpp35", "mpp45", "mpp46";
+		marvell,function = "gpio";
+	};
+
+	pmx_fan: pmx-fan {
+		marvell,pins = "mpp41", "mpp42";
+		marvell,function = "gpio";
+	};
+
+	pmx_usb_vbus: pmx-usb-vbus {
+		marvell,pins = "mpp43";
+		marvell,function = "gpio";
+	};
+
+	pmx_button: pmx-button {
+		marvell,pins = "mpp44", "mpp48";
+		marvell,function = "gpio";
+	};
+};
+
+&spi0 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <20000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "u-boot";
+				reg = <0x0 0x40000>;
+				read-only;
+			};
+
+			partition@40000 {
+				compatible = "openwrt,uimage", "denx,uimage";
+				openwrt,offset = <0x400>;
+				label = "firmware";
+				reg = <0x40000 0xf80000>;
+			};
+
+			partition@fc0000 {
+				label = "config";
+				reg = <0xfc0000 0x40000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&rtc {
+	status = "disabled";
+};
+
+&i2c0 {
+	status = "okay";
+
+	pca9536: gpio@41 {
+		compatible = "nxp,pca9536";
+		reg = <0x41>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&usb0 {
+	status = "okay";
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	ehci_port1: port@1 {
+		reg = <1>;
+		#trigger-source-cells = <0>;
+	};
+};
+
+&mdio {
+	status = "okay";
+
+	ethphyb: ethernet-phy@b {
+		reg = <0x0b>;
+	};
+};
+
+&eth1 {
+	status = "okay";
+};
+
+&eth1port {
+	phy-handle = <&ethphyb>;
+	phy-connection-type = "rgmii-id";
+};
+
+&sata {
+	status = "okay";
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+	nr-ports = <1>;
+
+	sata-port@0 {
+		reg = <0>;
+		#thermal-sensor-cells = <0>;
+	};
+};
diff --git a/target/linux/kirkwood/image/Makefile b/target/linux/kirkwood/image/Makefile
index 4a2ca8d68e..60e8654ad3 100644
--- a/target/linux/kirkwood/image/Makefile
+++ b/target/linux/kirkwood/image/Makefile
@@ -184,6 +184,21 @@ define Device/iom_ix2-200
 endef
 TARGET_DEVICES += iom_ix2-200
 
+define Device/iptime_nas1
+  DEVICE_VENDOR := ipTIME
+  DEVICE_MODEL := NAS1
+  DEVICE_PACKAGES := kmod-ata-marvell-sata kmod-fs-ext4 \
+	kmod-gpio-button-hotplug kmod-gpio-pca953x kmod-hwmon-drivetemp \
+	kmod-hwmon-gpiofan kmod-usb-ledtrig-usbport -uboot-envtools
+  KERNEL := $$(KERNEL) | iptime-naspkg nas1
+  BLOCKSIZE := 256k
+  IMAGE_SIZE := 15872k
+  IMAGES := sysupgrade.bin
+  IMAGE/sysupgrade.bin := append-kernel | append-rootfs | pad-rootfs | \
+	check-size | append-metadata
+endef
+TARGET_DEVICES += iptime_nas1
+
 define Device/linksys
   DEVICE_VENDOR := Linksys
   DEVICE_PACKAGES := kmod-mwl8k wpad-basic-wolfssl kmod-gpio-button-hotplug