boards: add hpmicro hpm6750evkmini board

This is an risc-v board with dual-core processor.

Signed-off-by: Weiwei Guo <[email protected]>

boards/riscv/hpm6750evkmini/CMakeLists.txt

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+# SPDX-License-Identifier: Apache-2.0
+
+zephyr_sources_ifdef(CONFIG_XIP bootstartup.c)

boards/riscv/hpm6750evkmini/Kconfig.board

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+# Copyright (c) 2022 HPMicro
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_HPM6750EVKMINI
+	bool "HPMicro HPM6750EVKMINI"
+	depends on SOC_SERIES_ANDES_HPMICRO
+	depends on SOC_HPM675X
+	select CPU_HAS_FPU_DOUBLE_PRECISION

boards/riscv/hpm6750evkmini/Kconfig.defconfig

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+# Copyright (c) 2022 HPMicro
+# SPDX-License-Identifier: Apache-2.0
+
+if BOARD_HPM6750EVKMINI
+
+DT_CHOSEN_Z_CODE_PARTITION := zephyr,code-partition
+
+config BOARD
+	default "hpm6750evkmini"
+
+config FLASH_LOAD_OFFSET
+	default $(dt_chosen_reg_addr_hex,$(DT_CHOSEN_Z_CODE_PARTITION))
+
+config FLASH_LOAD_SIZE
+	default $(dt_chosen_reg_size_hex,$(DT_CHOSEN_Z_CODE_PARTITION))
+
+endif # BOARD_HPM6750EVKMINI

boards/riscv/hpm6750evkmini/board.cmake

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+# SPDX-License-Identifier: Apache-2.0
+
+if(NOT CONFIG_XIP)
+board_runner_args(openocd "--use-elf")
+endif()
+board_runner_args(openocd "--config=${BOARD_DIR}/support/probes/ft2232.cfg"
+                                    "--config=${BOARD_DIR}/support/soc/hpm6750-single-core.cfg"
+                                "--config=${BOARD_DIR}/support/boards/hpm6750evkmini.cfg")
+board_runner_args(openocd --target-handle=_CHIPNAME.cpu0)
+
+include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake)

boards/riscv/hpm6750evkmini/bootstartup.c

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+/*
+ * Copyright (c) 2022 HPMicro
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ */
+
+#include <stdint.h>
+
+#ifdef CONFIG_XIP
+/**
+ * @brief FLASH configuration option definitions:
+ * option[0]:
+ *    [31:16] 0xfcf9 - FLASH configuration option tag
+ *    [15:4]  0 - Reserved
+ *    [3:0]   option words (exclude option[0])
+ * option[1]:
+ *    [31:28] Flash probe type
+ *      0 - SFDP SDR / 1 - SFDP DDR
+ *      2 - 1-4-4 Read (0xEB, 24-bit address) / 3 - 1-2-2 Read(0xBB, 24-bit address)
+ *      4 - HyperFLASH 1.8V / 5 - HyperFLASH 3V
+ *      6 - OctaBus DDR (SPI -> OPI DDR)
+ *      8 - Xccela DDR (SPI -> OPI DDR)
+ *      10 - EcoXiP DDR (SPI -> OPI DDR)
+ *    [27:24] Command Pads after Power-on Reset
+ *      0 - SPI / 1 - DPI / 2 - QPI / 3 - OPI
+ *    [23:20] Command Pads after Configuring FLASH
+ *      0 - SPI / 1 - DPI / 2 - QPI / 3 - OPI
+ *    [19:16] Quad Enable Sequence (for the device support SFDP 1.0 only)
+ *      0 - Not needed
+ *      1 - QE bit is at bit 6 in Status Register 1
+ *      2 - QE bit is at bit1 in Status Register 2
+ *      3 - QE bit is at bit7 in Status Register 2
+ *      4 - QE bit is at bit1 in Status Register 2 and should be programmed by 0x31
+ *    [15:8] Dummy cycles
+ *      0 - Auto-probed / detected / default value
+ *      Others - User specified value, for DDR read, the dummy cycles should be
+ *				2 * cycles on FLASH datasheet
+ *    [7:4] Misc.
+ *      0 - Not used
+ *      1 - SPI mode
+ *      2 - Internal loopback
+ *      3 - External DQS
+ *    [3:0] Frequency option
+ *      1 - 30MHz / 2 - 50MHz / 3 - 66MHz / 4 - 80MHz / 5 - 100MHz
+ *				/ 6 - 120MHz / 7 - 133MHz / 8 - 166MHz
+ *
+ * option[2] (Effective only if the bit[3:0] in option[0] > 1)
+ *    [31:20]  Reserved
+ *    [19:16] IO voltage
+ *      0 - 3V / 1 - 1.8V
+ *    [15:12] Pin group
+ *      0 - 1st group / 1 - 2nd group
+ *    [11:8] Connection selection
+ *      0 - CA_CS0 / 1 - CB_CS0 / 2 - CA_CS0 + CB_CS0
+ *			(Two FLASH connected to CA and CB respectively)
+ *    [7:0] Drive Strength
+ *      0 - Default value
+ * option[3] (Effective only if the bit[3:0] in option[0] > 2,
+ *				required only for the QSPI NOR FLASH that not supports
+ *              JESD216)
+ *    [31:16] reserved
+ *    [15:12] Sector Erase Command Option, not required here
+ *    [11:8]  Sector Size Option, not required here
+ *    [7:0] Flash Size Option
+ *      0 - 4MB / 1 - 8MB / 2 - 16MB
+ */
+__attribute__ ((section(".nor_cfg_option"))) const uint32_t option[4] = {
+		0xfcf90001, 0x00000007, 0x0, 0x0
+	};
+uint32_t __fw_size__[] = {32768};
+
+#endif

boards/riscv/hpm6750evkmini/doc/index.rst

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+.. _hpm6750evkmini:
+
+HPMicro HPM6750EVKMINI
+######################
+
+Overview
+********
+
+The HPM6750 is a dual-core flashless MCU running 816Mhz.
+It has a 2MB continuous on-chip ram.
+Also, it provides various memory interfaces, including SDRAM, Quad SPI NOR Flash, SD/eMMC.
+
+The figure shows the HPM6750EVKMINI board.
+
+.. image:: img/hpm6750evkmini.png
+     :align: center
+     :alt: HPM6750EVKMINI
+
+Hardware
+********
+
+The HPM6750EVKMINI platform integrates 2 cores 32-bit 816MHz RISC-V CPUs, DSP,
+2MB RAM, Cache, SPI flash memory, ethernet controller and other peripherals.
+
+- HPM6750IVM MCU (816Mhz, 2MB OCRAM)
+- Onboard Memory
+  - 128Mb SDRAM
+  - 64Mb Quad SPI NOR Flash
+- Display & Camera
+  - LCD connector
+  - Camera (DVP)
+- WiFi
+  - RW007 over SPI
+- USB
+  - USB type C (USB 2.0 OTG) connector x2
+- Audio
+  - Mic
+  - DAO
+- Others
+  - TF Slot
+  - FT2232
+  - Beeper
+  - RGB LED
+- Expansion port
+  - ART-PI extension port
+
+For more information about the HPMICRO SoC and HPM6750EVKMINI board:
+
+- `HPMICRO Design Resources`_
+
+Supported Features
+==================
+
+The Zephyr hpm6750evkmini board configuration supports the following hardware
+features:
+
++------------------+------------+-------------------------------------+
+| Interface        | Controller | Driver/Component                    |
++==================+============+=====================================+
+| PLIC             | on-chip    | interrupt_controller                |
++------------------+------------+-------------------------------------+
+| RISC-V Machine   | on-chip    | timer                               |
+| Timer            |            |                                     |
++------------------+------------+-------------------------------------+
+| Clock Controller | on-chip    | clock_controller                    |
++------------------+------------+-------------------------------------+
+| UART             | on-chip    | serial port-polling;                |
+|                  |            | serial port-interrupt               |
++------------------+------------+-------------------------------------+
+| PINMUX           | on-chip    | pinmux                              |
++------------------+------------+-------------------------------------+
+| GPIO             | on-chip    | gpio                                |
++------------------+------------+-------------------------------------+
+
+Connections and IOs
+===================
+
+.. rst-class:: rst-columns
+
+- UART0_RX : Y7
+- UART0_TX : Y6
+- LED_R : B19
+- LED_G : B18
+- LED_B : B20
+
+System Clock
+============
+
+HPM6750EVKMINI System Clock is use the PLL clock driven by
+external 24MHZ oscillator, By default System clock is 1GHz.
+
+Serial Port
+===========
+
+The HPM6750EVKMINI platform has 2 UARTs.
+The Zephyr console output is by default assigned to UART0 and the default
+settings are 115200 8N1.
+
+Programming and debugging
+*************************
+
+Building
+========
+
+You can build applications in the usual way. Here is an example for
+the :ref:`hello_world` application.
+
+.. zephyr-app-commands::
+   :board: hpm6750evkmini
+   :zephyr-app: samples/hello_world
+   :goals: build
+
+Flashing
+========
+
+First, connect the hpm6750evkmini PWR DEBUG usb TypeC to your host
+computer to prepare it for flashing. Then build and flash your application.
+
+If you want to use XIP mode (``CONFIG_XIP=y``).
+If ``CONFIG_XIP=n``, you can load the program into RAM directly
+and execute it.
+
+.. zephyr-app-commands::
+   :board: hpm6750evkmini
+   :zephyr-app: samples/hello_world
+   :goals: flash
+
+Open a serial terminal with the following settings:
+
+.. code-block:: console
+
+   $ minicom -D /dev/<tty device>
+
+- Speed: 115200
+- Data: 8 bits
+- Parity: None
+- Stop bits: 1
+
+Replace <tty_device> with the port where the FT2232HL can be
+found. For example, under Linux, /dev/ttyUSB1.
+
+you should see the following message in the terminal:
+
+.. code-block:: console
+
+   Hello World! hpm6750evkmini
+
+Debugging
+=========
+
+.. zephyr-app-commands::
+   :board: hpm6750evkmini
+   :zephyr-app: samples/hello_world
+   :goals: debug
+
+References
+==========
+
+.. _HPMICRO Design Resources:
+   http://www.hpmicro.com/resources/resources.html

boards/riscv/hpm6750evkmini/hpm6750evkmini-pinctrl.dtsi

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+/*
+ * Copyright (c) 2022 HPMicro
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include <zephyr/dt-bindings/pinctrl/hpmicro-pinctrl-common.h>
+&pinctrl {
+	pinmux_uart0: pinmux_uart0 {
+		group0 {
+			pinmux =
+			<HPMICRO_PINMUX(Y, 7, IOC, 0, 2)>,
+			<HPMICRO_PINMUX(Y, 6, IOC, 0, 2)>,
+			<HPMICRO_PINMUX(Y, 7, PIOC, 0, 3)>,
+			<HPMICRO_PINMUX(Y, 6, PIOC, 0, 3)>;
+			drive-strength = "r000";
+			power-source = "3v3";
+		};
+	};
+};