boards/riscv: add new riscv platform-it8xxx2

We create a new platform for our chip series it8xxx2.
It is a riscv base soc.

Signed-off-by: Cheryl Su <cheryl.su@ite.com.tw>

CODEOWNERS

@@ -233,6 +233,7 @@
 /drivers/pcie/                            @andrewboie
 /drivers/peci/                            @albertofloyd @franciscomunoz @scottwcpg
 /drivers/pinmux/*hsdk*                    @iriszzw
+/drivers/pinmux/*it8xxx2*                 @ite
 /drivers/ps2/                             @albertofloyd @franciscomunoz @scottwcpg
 /drivers/pwm/*sam0*                       @nzmichaelh
 /drivers/pwm/*stm32*                      @gmarull
@@ -272,6 +273,7 @@
 /drivers/timer/cortex_m_systick.c         @ioannisg
 /drivers/timer/altera_avalon_timer_hal.c  @wentongwu
 /drivers/timer/riscv_machine_timer.c      @nategraff-sifive @kgugala @pgielda
+/drivers/timer/ite_it8xxx2_timer.c        @ite
 /drivers/timer/xlnx_psttc_timer*          @wjliang @stephanosio
 /drivers/timer/cc13x2_cc26x2_rtc_timer.c  @vanti
 /drivers/timer/cavs_timer.c               @dcpleung
@@ -317,6 +319,7 @@
 /dts/arm/silabs/efm32jg12b*               @chrta
 /dts/arm/silabs/efm32pg12b*               @chrta
 /dts/arm/silabs/efr32mg21*                @l-alfred
+/dts/riscv/it8xxx2.dtsi                   @ite
 /dts/riscv/microsemi-miv.dtsi             @galak
 /dts/riscv/rv32m1*                        @MaureenHelm
 /dts/riscv/riscv32-fe310.dtsi             @nategraff-sifive

boards/riscv/it8xxx2_evb/CMakeLists.txt

@@ -0,0 +1,6 @@
+#
+# Copyright (c) 2020 ITE Corporation. All Rights Reserved.
+#
+# SPDX-License-Identifier: Apache-2.0
+zephyr_library()
+zephyr_library_sources(pinmux.c)

boards/riscv/it8xxx2_evb/Kconfig.board

@@ -0,0 +1,6 @@
+# Copyright (c) 2020 ITE Corporation. All Rights Reserved.
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_IT8XXX2_EVB
+	bool "IT8XXX2 EV-board"
+	depends on SOC_IT8XXX2

boards/riscv/it8xxx2_evb/Kconfig.defconfig

@@ -0,0 +1,8 @@
+# Copyright (c) 2020 ITE Corporation. All Rights Reserved.
+# SPDX-License-Identifier: Apache-2.0
+
+if BOARD_IT8XXX2_EVB
+
+config BOARD
+	default "it8xxx2_evb"
+endif

boards/riscv/it8xxx2_evb/board.cmake

@@ -0,0 +1,2 @@
+set(EMU_PLATFORM renode)
+set(RENODE_SCRIPT ${CMAKE_CURRENT_LIST_DIR}/support/it8xxx2_evb.resc)

boards/riscv/it8xxx2_evb/doc/index.rst

@@ -0,0 +1,98 @@
+.. _it8xxx2_evb:
+
+ITE IT8XXX2 series
+######################
+
+Overview
+********
+
+The IT8XXX2 is a 32-bit RISC-V Micro-controller.
+And a highly integrated embedded controller with system functions.
+It is suitable for mobile system applications.
+
+.. figure:: it81302_board.jpg
+     :width: 2016px
+     :height: 1512px
+     :align: center
+     :alt: It81302 EVB
+
+To find out more about ITE, visit our World Wide Web at:`ITE's website`_
+
+
+Hardware
+********
+The IT8XXX2 series contains different chip types(ex, it81302, it83202),
+and they support different hardware features.
+Listing the IT81302 hardware features as following:
+
+- RISC-V RV32IMAFC instruction set
+- 4KB instruction cache size
+- 60KB SDRAM in total
+- Built-in 32.768 kHz clock generator
+- PWM, eSPI, LPC, FLASH, UART, GPIO, Timer, Watchdog, ADC, JTAG
+- 6 SMBus channels, with 3 DMA controllers, compatiable with I2C
+- SPI master/slave
+- USB Type-c CC Logic
+- USB Power Delivery
+- Support KB scan
+
+
+Supported Features
+==================
+currently supports the following hardware features:
+
+.. list-table:: Supported Features
+   :header-rows: 1
+   :widths: auto
+
+   * - Interface
+     - Controller
+     - Driver/Component
+   * - NVIC
+     - on-chip
+     - interrupt controller
+   * - TIMER
+     - on-chip
+     - timer
+   * - UART
+     - on-chip
+     - serial
+   * - GPIO
+     - on-chip
+     - gpio
+
+Programming and debugging
+*************************
+
+Building
+========
+
+Applications for the ``it8xxx2_evb`` board configuration can be built as usual
+(see :`Zephyr Getting Started Guide`_):
+
+.. zephyr-app-commands::
+   :board: it8xxx2_evb
+   :goals: build
+
+Flashing
+========
+
+In order to upload the application to the device,
+you'll need our winflash tool and download board.
+You can get the winflash tool at here:`Download Link`_
+Use the winflash.exe tool to program a zephyr application
+to the it8xxx2 board flash.
+
+Debugging
+=========
+
+Supporting uart debug, currently.
+
+References
+==========
+
+.. target-notes::
+
+.. _ITE's website: http://www.ite.com.tw/en/product/view?mid=149
+.. _Zephyr Getting Started Guide: https://docs.zephyrproject.org/latest/getting_started/index.html
+.. _Download Link: http://www.ite.com.tw/en/product/view?mid=149

boards/riscv/it8xxx2_evb/it8xxx2_evb.dts

@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) ITE, All Rights Reserved
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/dts-v1/;
+
+#include <it8xxx2.dtsi>
+
+/ {
+	model = "IT8XXX2 EV-Board";
+	compatible = "riscv, it8xxx2_evb";
+	chosen {
+		zephyr,console = &uart1;
+		zephyr,shell-uart = &uart1;
+		zephyr,bt-uart = &uart2;
+		zephyr,sram = &sram0;
+		zephyr,flash = &flash0;
+		zephyr,flash-controller = &flashctrl;
+		zephyr,code-partition = &slot0_partition;
+	};
+};
+&gpiob {
+	status = "okay";
+};
+&gpiof {
+	status = "okay";
+};
+&uart1 {
+	status = "okay";
+	current-speed = <115200>;
+	clock-frequency = <1804800>;
+};
+&uart2 {
+	status = "okay";
+	current-speed = <460800>;
+	clock-frequency = <1804800>;
+};
+&flash0 {
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		boot_partition: partition@0 {
+			label = "mcuboot";
+			reg = <0x00000000 0x20000>;
+		};
+		slot0_partition: partition@20000 {
+			label = "image-0";
+			reg = <0x00020000 0x20000>;
+		};
+		slot1_partition: partition@40000 {
+			label = "image-1";
+			reg = <0x00040000 0x10000>;
+		};
+		scratch_partition: partition@50000 {
+			label = "image-scratch";
+			reg = <0x00050000 0x10000>;
+		};
+		storage_partition: partition@60000 {
+			label = "storage";
+			reg = <0x00060000 0x20000>;
+		};
+	};
+};

boards/riscv/it8xxx2_evb/it8xxx2_evb.yaml

@@ -0,0 +1,11 @@
+identifier: it8xxx2_evb
+name: it8xxx2_evb
+type: mcu
+arch: riscv
+toolchain:
+  - zephyr
+ram: 60
+testing:
+  ignore_tags:
+    - net
+    - bluetooth

boards/riscv/it8xxx2_evb/it8xxx2_evb_defconfig

@@ -0,0 +1,30 @@
+# Copyright (c) 2020 ITE Corporation. All Rights Reserved.
+# SPDX-License-Identifier: Apache-2.0
+
+CONFIG_SOC_SERIES_RISCV32_IT8XXX2=y
+CONFIG_SOC_IT8XXX2=y
+CONFIG_BOARD_IT8XXX2_EVB=y
+CONFIG_BOOT_DELAY=1
+
+CONFIG_PINMUX=y
+CONFIG_PINMUX_ITE_IT8XXX2=y
+CONFIG_ITE_IT8XXX2_TIMER=y
+CONFIG_GEN_IRQ_VECTOR_TABLE=n
+CONFIG_CONSOLE=y
+CONFIG_SERIAL=y
+CONFIG_UART_INTERRUPT_DRIVEN=y
+CONFIG_UART_CONSOLE=y
+CONFIG_UART_NS16550=y
+
+CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=32768
+CONFIG_SYS_CLOCK_TICKS_PER_SEC=1000
+CONFIG_TICKLESS_CAPABLE=y
+
+CONFIG_XIP=y
+CONFIG_INIT_STACKS=y
+CONFIG_OUTPUT_PRINT_MEMORY_USAGE=n
+CONFIG_LINKER_ORPHAN_SECTION_PLACE=y
+CONFIG_COMPILER_OPT="-mcmodel=medlow"
+CONFIG_GPIO=y
+CONFIG_GPIO_ITE_IT8XXX2=y
+CONFIG_LEGACY_TIMEOUT_API=y

boards/riscv/it8xxx2_evb/pinmux.c

@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2020 ITE Corporation. All Rights Reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ */
+
+#include <init.h>
+#include <drivers/pinmux.h>
+#include <soc.h>
+
+static int it8xxx2_evb_pinmux_init(const struct device *dev)
+{
+	ARG_UNUSED(dev);
+
+	const struct device *p =
+		device_get_binding(CONFIG_PINMUX_ITE_IT8XXX2_NAME);
+
+#if DT_NODE_HAS_STATUS(DT_NODELABEL(uart1), okay)
+	pinmux_pin_set(p, 0, IT8XXX2_PINMUX_IOF1);
+	pinmux_pin_set(p, 56, IT8XXX2_PINMUX_IOF1);
+#endif	/* DT_NODE_HAS_STATUS(DT_NODELABEL(uart1), okay) */
+
+#if DT_NODE_HAS_STATUS(DT_NODELABEL(uart2), okay)
+	pinmux_pin_set(p, 3, IT8XXX2_PINMUX_IOF1);
+	pinmux_pin_set(p, 59, IT8XXX2_PINMUX_IOF1);
+#endif	/* DT_NODE_HAS_STATUS(DT_NODELABEL(uart2), okay) */
+	return 0;
+}
+
+SYS_INIT(it8xxx2_evb_pinmux_init, PRE_KERNEL_1, CONFIG_PINMUX_INIT_PRIORITY);

boards/riscv/it8xxx2_evb/support/it8xxx2_evb.resc

@@ -0,0 +1,17 @@
+:name: ITE-evb
+:description: This script is prepared to run Zephyr on a Mi-V RISC-V board.
+
+$name?="ITE-evb"
+
+using sysbus
+mach create $name
+machine LoadPlatformDescription @platforms/boards/it8xxx2_evb.repl
+
+showAnalyzer uart
+cpu PerformanceInMips 80
+
+macro reset
+"""
+    sysbus LoadELF $bin
+"""
+runMacro $reset