boards/risc-v: Add support for Milk-V Duo S SBC (SOPHGO SG2000 SoC)
This PR adds support for Milk-V Duo S 64-bit RISC-V SBC, based on SOPHGO SG2000 SoC (T-Head C906 Core). Most of the code is derived from NuttX for Ox64 BL808. The source files are explained in the articles here: https://github.com/lupyuen/nuttx-sg2000 Modified Files: `boards/Kconfig`: Added Milk-V Duo S board `arch/risc-v/src/sg2000/sg2000_timerisr.c`: Fixed MTIMER_FREQ for sleep() to work correctly New Files in boards/risc-v/sg2000/milkv_duos: `src/sg2000_appinit.c`: Startup Code `include/board.h`: Milk-V Duo S Definitions `include/board_memorymap.h`: Memory Map `src/etc/init.d/rc.sysinit`, `rcS`: Startup Script `src/.gitignore`: Ignore the tmp filesystem `scripts/ld.script`: Linker Script `scripts/Make.defs`: Milk-V Duo S Makefile `src/Makefile`: Milk-V Duo S Makefile `Kconfig`: Milk-V Duo S Config `configs/nsh/defconfig`: Build Config for `milkv_duos:nsh` Updated Documentation: `platforms/risc-v/sg2000/index.rst`: New page for SOPHGO SG2000 SoC `platforms/risc-v/sg2000/boards/milkv_duos/index.rst`: Building and booting NuttX for Milk-V Duo S
This commit is contained in:
Xiang Xiao
parent
02cce1ec71
commit
008803865f
15 changed files with 918 additions and 1 deletions
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============
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Milk-V Duo S
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============
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`Milk-V Duo S <https://milkv.io/duo-s>`_ is a RISC-V Single-Board Computer
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based on the SOPHGO SG2000 RISC-V SoC with T-Head C906 64-bit Main Processor,
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512 MB of SIP DRAM memory and 100 Mbps Ethernet.
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Features
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========
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- **System on Chip:** SOPHGO SG2000
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- **CPU:**
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- 64-bit T-Head C906 1.0 GHz (Main Processor)
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- 64-bit T-Head C906 700 MHz (Co-Processor)
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- 64-bit Arm Cortex-A53 1.0 GHz (Alternate Main Processor)
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- **MCU:** 8051 with 6 KB SRAM
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- **Memory:** SIP DRAM 512 MB
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- **TPU:** 0.5 TOPS INT8
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- **Storage:** 1 x microSD Connector, 1 x eMMC Pad
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- **USB:** 1 x Type-C for Power and Data or 1 x USB 2.0 A Port Host
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- **MIPI CSI:** 1 x 16P FPC Connector (MIPI CSI 2-Lane), 1 x 15P FPC Connector (MIPI CSI 2-Lane)
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- **Sensor Support:** 5M @ 30 FPS
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- **MIPI DSI:** Via GPIO Header (MIPI DSI 4-Lane)
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- **Ethernet:** 100 Mbps Ethernet Port (RJ45)
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- **Wireless:** Optional Wi-Fi 6 / Bluetooth 5
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- **Audio:** Via GPIO Pin
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- **GPIO:** Up to 39 x GPIO Pin (via 2 x 26-Pin GPIO Header)
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- **Others:** 1 x Boot Switch, 1 x Recovery Key, 1 x Reset Key
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Serial Console
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==============
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A **USB Serial Adapter** is required to run NuttX on Milk-V Duo S,
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**CP2102** is recommended. CH340 might not work correctly with Duo S.
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Connect the USB Serial Adapter to Duo S Serial Console at:
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========== ================
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USB Serial Milk-V Duo S Pin
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========== ================
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GND Pin 6 (GND)
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RX Pin 8 (XGPIOA 16 / UART0 TX)
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TX Pin 10 (XGPIOA 17 / UART0 RX)
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========== ================
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On the USB Serial Adapter, set the **Voltage Level** to 3V3.
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Connect Duo S to our computer with the USB Serial Adapter.
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On our computer, start a Serial Terminal and connect to the USB Serial Port
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at **115.2 kbps**:
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.. code:: console
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$ screen /dev/ttyUSB0 115200
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NuttX will appear in the Serial Console when it boots on Duo S.
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RISC-V Toolchain
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================
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Before building NuttX for Milk-V Duo S, download the toolchain for
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`xPack GNU RISC-V Embedded GCC (riscv-none-elf) <https://github.com/xpack-dev-tools/riscv-none-elf-gcc-xpack/releases>`_.
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Add the downloaded toolchain ``xpack-riscv-none-elf-gcc-.../bin``
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to the ``PATH`` Environment Variable.
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Check the RISC-V Toolchain:
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.. code:: console
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$ riscv-none-elf-gcc -v
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Building
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========
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To build NuttX for Milk-V Duo S, :doc:`install the prerequisites </quickstart/install>` and
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:doc:`clone the git repositories </quickstart/install>` for ``nuttx`` and ``apps``.
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Configure the NuttX project and build the project:
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.. code:: console
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$ cd nuttx
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$ tools/configure.sh milkv_duos:nsh
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$ make
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This produces the NuttX Kernel ``nuttx.bin``. Next, build the NuttX Apps Filesystem:
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.. code:: console
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$ make export
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$ pushd ../apps
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$ tools/mkimport.sh -z -x ../nuttx/nuttx-export-*.tar.gz
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$ make import
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$ popd
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$ genromfs -f initrd -d ../apps/bin -V "NuttXBootVol"
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This generates the Initial RAM Disk ``initrd``.
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Package the NuttX Kernel and Initial RAM Disk into a NuttX Image:
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.. code:: console
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$ head -c 65536 /dev/zero >/tmp/nuttx.pad
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$ cat nuttx.bin /tmp/nuttx.pad initrd >Image-sg2000
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The NuttX Image ``Image-sg2000`` will be copied to the TFTP Server in the next step.
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Booting
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=======
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NuttX requires a microSD Card with U-Boot Bootloader. Prepare a
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`Linux microSD Card <https://lupyuen.github.io/articles/sg2000#download-the-linux-microsd>`_
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for Duo S.
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To boot NuttX on Milk-V Duo S, flip the `Main Processor Switch <https://lupyuen.github.io/articles/sg2000#boot-without-microsd>`_
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to **RV** (RISC-V).
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On our computer, `install the TFTP Server <https://lupyuen.github.io/articles/sg2000#boot-nuttx-over-tftp>`_.
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Copy the file ``Image-sg2000`` from the previous section to the TFTP Server,
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together with the Device Tree:
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.. code:: console
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$ wget https://github.com/lupyuen2/wip-nuttx/releases/download/sg2000-1/cv181x_milkv_duos_sd.dtb
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$ scp Image-sg2000 \
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tftpserver:/tftpfolder/Image-sg2000
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$ scp cv181x_milkv_duos_sd.dtb \
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tftpserver:/tftpfolder/cv181x_milkv_duos_sd.dtb
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Check that Duo S is connected to our computer via a USB Serial Adapter at 115.2 kbps:
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.. code:: console
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$ screen /dev/ttyUSB0 115200
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Insert the microSD Card into Duo S, connect the Ethernet Port and power up via the USB-C Port.
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When Duo S boots, press Enter to see the U-Boot Prompt.
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Run these commands to `boot NuttX over TFTP <https://lupyuen.github.io/articles/sg2000#boot-nuttx-over-tftp>`_:
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.. code:: console
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# Change to your TFTP Server
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$ setenv tftp_server 192.168.x.x
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$ saveenv
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$ dhcp ${kernel_addr_r} ${tftp_server}:Image-sg2000
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$ tftpboot ${fdt_addr_r} ${tftp_server}:cv181x_milkv_duos_sd.dtb
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$ fdt addr ${fdt_addr_r}
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$ booti ${kernel_addr_r} - ${fdt_addr_r}
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Or configure U-Boot to `boot NuttX automatically <https://lupyuen.github.io/articles/sg2000#boot-nuttx-over-tftp>`_.
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NuttX boots on Duo S and NuttShell (nsh) appears in the Serial Console.
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To see the available commands in NuttShell:
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.. code:: console
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$ help
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Configurations
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==============
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nsh
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---
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Basic configuration that runs NuttShell (nsh).
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This configuration is focused on low level, command-line driver testing.
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Built-in applications are supported, but none are enabled.
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Serial Console is enabled on UART0 at 115.2 kbps.
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Peripheral Support
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==================
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NuttX for Milk-V Duo S supports these peripherals:
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======================== ======= =====
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Peripheral Support NOTES
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======================== ======= =====
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UART Yes
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======================== ======= =====
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36
Documentation/platforms/risc-v/sg2000/index.rst
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36
Documentation/platforms/risc-v/sg2000/index.rst
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=============
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SOPHGO SG2000
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=============
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`SOPHGO SG2000 <https://milkv.io/chips/sg2000>`_ is a 64-bit RISC-V SoC with 2 RISC-V Cores and 1 Arm Core:
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- **Main Processor:** T-Head C906 1.0 GHz 64-bit RISC-V Core
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- 32 KB I-Cache, 64KB D-Cache
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- Integrated Vector and Floating-Point Operation Unit (FPU)
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- **Co-Processor:** T-Head C906 700 MHz 64-bit RISC-V Core
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- Integrated Floating-Point Unit (FPU)
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- **Alternate Main Processor:** Cortex-A53 1.0 GHz 64-bit Arm Core
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- 32 KB I-Cache, 32 KB D-Cache
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- 128 KB L2 Cache
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- Support Neon and Floating-Point Operation Unit (FPU)
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- **MCU:** 8051 with 6 KB SRAM
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- **TPU:** 0.5 TOPS INT8
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- **Memory:** SIP DRAM 512 MB
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- **Video Module:** ISP 5M @ 30 FPS, 2L MIPI DSI 5M @ 30 FPS, 4L or 2L+2L MIPI CSI 5M @ 30 FPS, H.265 / H.264 Decoding and Encoding 5M @ 30 FPS
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- **Audio Module:** 16-bit Audio Codec, 2 x I2S / PCM, 1 x DMIC
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- **Storage:** SPI-NOR, SPI-NAND, eMMC 5.0, 2 x SDIO 3.0
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- **Network:** 10M / 100M MAC PHY
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- **Security Module:** Crypto, Secure Boot, TRNG, Efuse
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- **Peripherals:** 1 x USB 2.0 DRD, 5 x UART, 4 x SPI, 16 x PWM, 1 x IR, 6 x I2C, 6 x ADC, GPIOs
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Supported Boards
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================
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.. toctree::
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:glob:
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:maxdepth: 1
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boards/*/*
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@ -38,7 +38,7 @@
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* Pre-processor Definitions
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* Pre-processor Definitions
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****************************************************************************/
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****************************************************************************/
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#define MTIMER_FREQ 1000000
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#define MTIMER_FREQ 25000000ul
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/****************************************************************************
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/****************************************************************************
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* Public Functions
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* Public Functions
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@ -2007,6 +2007,13 @@ config ARCH_BOARD_BL808_OX64
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This options selects support for NuttX on PINE64 Ox64 based
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This options selects support for NuttX on PINE64 Ox64 based
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on Bouffalo Lab BL808 SoC.
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on Bouffalo Lab BL808 SoC.
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config ARCH_BOARD_SG2000_MILKV_DUOS
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bool "Milk-V Duo S"
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depends on ARCH_CHIP_SG2000
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---help---
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This options selects support for NuttX on Milk-V Duo S based
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on SOPHGO SG2000 SoC.
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config ARCH_BOARD_S32K118EVB
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config ARCH_BOARD_S32K118EVB
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bool "NXP S32K118EVB"
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bool "NXP S32K118EVB"
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depends on ARCH_CHIP_S32K118
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depends on ARCH_CHIP_S32K118
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@ -3368,6 +3375,7 @@ config ARCH_BOARD
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default "star64" if ARCH_BOARD_JH7110_STAR64
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default "star64" if ARCH_BOARD_JH7110_STAR64
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default "canmv230" if ARCH_BOARD_K230_CANMV
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default "canmv230" if ARCH_BOARD_K230_CANMV
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default "ox64" if ARCH_BOARD_BL808_OX64
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default "ox64" if ARCH_BOARD_BL808_OX64
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default "milkv_duos" if ARCH_BOARD_SG2000_MILKV_DUOS
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default "sabre-6quad" if ARCH_BOARD_SABRE_6QUAD
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default "sabre-6quad" if ARCH_BOARD_SABRE_6QUAD
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default "tc397" if ARCH_BOARD_TC397
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default "tc397" if ARCH_BOARD_TC397
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default "qemu-armv7a" if ARCH_BOARD_QEMU_ARMV7A
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default "qemu-armv7a" if ARCH_BOARD_QEMU_ARMV7A
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@ -4302,6 +4310,9 @@ endif
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if ARCH_BOARD_BL808_OX64
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if ARCH_BOARD_BL808_OX64
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source "boards/risc-v/bl808/ox64/Kconfig"
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source "boards/risc-v/bl808/ox64/Kconfig"
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endif
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endif
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if ARCH_BOARD_SG2000_MILKV_DUOS
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source "boards/risc-v/sg2000/milkv_duos/Kconfig"
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endif
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if ARCH_BOARD_ESP32C3_DEVKIT
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if ARCH_BOARD_ESP32C3_DEVKIT
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source "boards/risc-v/esp32c3-legacy/esp32c3-devkit/Kconfig"
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source "boards/risc-v/esp32c3-legacy/esp32c3-devkit/Kconfig"
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endif
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endif
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0
boards/risc-v/sg2000/milkv_duos/Kconfig
Normal file
0
boards/risc-v/sg2000/milkv_duos/Kconfig
Normal file
93
boards/risc-v/sg2000/milkv_duos/configs/nsh/defconfig
Normal file
93
boards/risc-v/sg2000/milkv_duos/configs/nsh/defconfig
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#
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# This file is autogenerated: PLEASE DO NOT EDIT IT.
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#
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# You can use "make menuconfig" to make any modifications to the installed .config file.
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# You can then do "make savedefconfig" to generate a new defconfig file that includes your
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# modifications.
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#
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# CONFIG_DISABLE_OS_API is not set
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# CONFIG_NSH_DISABLE_LOSMART is not set
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CONFIG_16550_ADDRWIDTH=0
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CONFIG_16550_REGINCR=4
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CONFIG_16550_UART0=y
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CONFIG_16550_UART0_BASE=0x04140000
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CONFIG_16550_UART0_CLOCK=24883200
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CONFIG_16550_UART0_IRQ=69
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CONFIG_16550_UART0_SERIAL_CONSOLE=y
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CONFIG_16550_UART=y
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CONFIG_16550_WAIT_LCR=y
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CONFIG_ARCH="risc-v"
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CONFIG_ARCH_ADDRENV=y
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CONFIG_ARCH_BOARD="milkv_duos"
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CONFIG_ARCH_BOARD_SG2000_MILKV_DUOS=y
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CONFIG_ARCH_CHIP="sg2000"
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CONFIG_ARCH_CHIP_SG2000=y
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CONFIG_ARCH_DATA_NPAGES=128
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CONFIG_ARCH_DATA_VBASE=0xC0100000
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CONFIG_ARCH_HEAP_NPAGES=128
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CONFIG_ARCH_HEAP_VBASE=0xC0200000
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CONFIG_ARCH_INTERRUPTSTACK=2048
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CONFIG_ARCH_KERNEL_STACKSIZE=3072
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CONFIG_ARCH_PGPOOL_MAPPING=y
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CONFIG_ARCH_PGPOOL_PBASE=0x80600000
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CONFIG_ARCH_PGPOOL_SIZE=4194304
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CONFIG_ARCH_PGPOOL_VBASE=0x80600000
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CONFIG_ARCH_RISCV=y
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CONFIG_ARCH_STACKDUMP=y
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CONFIG_ARCH_TEXT_NPAGES=128
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CONFIG_ARCH_TEXT_VBASE=0xC0000000
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CONFIG_ARCH_USE_MMU=y
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CONFIG_ARCH_USE_MPU=y
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CONFIG_ARCH_USE_S_MODE=y
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CONFIG_BOARDCTL_ROMDISK=y
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CONFIG_BOARD_LATE_INITIALIZE=y
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CONFIG_BOARD_LOOPSPERMSEC=1120
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CONFIG_BUILD_KERNEL=y
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CONFIG_DEBUG_ASSERTIONS=y
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CONFIG_DEBUG_ASSERTIONS_EXPRESSION=y
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CONFIG_DEBUG_FEATURES=y
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CONFIG_DEBUG_FULLOPT=y
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CONFIG_DEBUG_SYMBOLS=y
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CONFIG_DEV_ZERO=y
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CONFIG_ELF=y
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CONFIG_EXAMPLES_HELLO=m
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CONFIG_FS_PROCFS=y
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CONFIG_FS_ROMFS=y
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||||||
|
CONFIG_IDLETHREAD_STACKSIZE=3072
|
||||||
|
CONFIG_INIT_FILEPATH="/system/bin/init"
|
||||||
|
CONFIG_INIT_MOUNT=y
|
||||||
|
CONFIG_INIT_MOUNT_FLAGS=0x1
|
||||||
|
CONFIG_INIT_MOUNT_TARGET="/system/bin"
|
||||||
|
CONFIG_INIT_STACKSIZE=3072
|
||||||
|
CONFIG_INTELHEX_BINARY=y
|
||||||
|
CONFIG_LIBC_ENVPATH=y
|
||||||
|
CONFIG_LIBC_EXECFUNCS=y
|
||||||
|
CONFIG_LIBC_PERROR_STDOUT=y
|
||||||
|
CONFIG_LIBC_STRERROR=y
|
||||||
|
CONFIG_MEMSET_64BIT=y
|
||||||
|
CONFIG_MEMSET_OPTSPEED=y
|
||||||
|
CONFIG_MM_PGALLOC=y
|
||||||
|
CONFIG_NFILE_DESCRIPTORS_PER_BLOCK=6
|
||||||
|
CONFIG_NSH_ARCHINIT=y
|
||||||
|
CONFIG_NSH_FILEIOSIZE=512
|
||||||
|
CONFIG_NSH_FILE_APPS=y
|
||||||
|
CONFIG_NSH_READLINE=y
|
||||||
|
CONFIG_PATH_INITIAL="/system/bin"
|
||||||
|
CONFIG_RAM_SIZE=1048576
|
||||||
|
CONFIG_RAM_START=0x80200000
|
||||||
|
CONFIG_RAW_BINARY=y
|
||||||
|
CONFIG_READLINE_CMD_HISTORY=y
|
||||||
|
CONFIG_RR_INTERVAL=200
|
||||||
|
CONFIG_SCHED_HAVE_PARENT=y
|
||||||
|
CONFIG_SCHED_LPWORK=y
|
||||||
|
CONFIG_SCHED_WAITPID=y
|
||||||
|
CONFIG_SERIAL_UART_ARCH_MMIO=y
|
||||||
|
CONFIG_STACK_COLORATION=y
|
||||||
|
CONFIG_START_MONTH=12
|
||||||
|
CONFIG_START_YEAR=2021
|
||||||
|
CONFIG_SYMTAB_ORDEREDBYNAME=y
|
||||||
|
CONFIG_SYSTEM_NSH=y
|
||||||
|
CONFIG_SYSTEM_NSH_PROGNAME="init"
|
||||||
|
CONFIG_TESTING_GETPRIME=y
|
||||||
|
CONFIG_TESTING_OSTEST=y
|
||||||
|
CONFIG_USEC_PER_TICK=1000
|
||||||
78
boards/risc-v/sg2000/milkv_duos/include/board.h
Normal file
78
boards/risc-v/sg2000/milkv_duos/include/board.h
Normal file
|
|
@ -0,0 +1,78 @@
|
||||||
|
/****************************************************************************
|
||||||
|
* boards/risc-v/sg2000/milkv_duos/include/board.h
|
||||||
|
*
|
||||||
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
||||||
|
* contributor license agreements. See the NOTICE file distributed with
|
||||||
|
* this work for additional information regarding copyright ownership. The
|
||||||
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
||||||
|
* "License"); you may not use this file except in compliance with the
|
||||||
|
* License. You may obtain a copy of the License at
|
||||||
|
*
|
||||||
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||||||
|
*
|
||||||
|
* Unless required by applicable law or agreed to in writing, software
|
||||||
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||||
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||||
|
* License for the specific language governing permissions and limitations
|
||||||
|
* under the License.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
#ifndef __BOARDS_RISCV_SG2000_MILKV_DUOS_INCLUDE_BOARD_H
|
||||||
|
#define __BOARDS_RISCV_SG2000_MILKV_DUOS_INCLUDE_BOARD_H
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Included Files
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
#include <nuttx/config.h>
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Pre-processor Definitions
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
#define LED_STARTED 0 /* N/A */
|
||||||
|
#define LED_HEAPALLOCATE 1 /* N/A */
|
||||||
|
#define LED_IRQSENABLED 2 /* N/A */
|
||||||
|
#define LED_STACKCREATED 3 /* N/A */
|
||||||
|
#define LED_INIRQ 4 /* N/A */
|
||||||
|
#define LED_SIGNAL 5 /* N/A */
|
||||||
|
#define LED_ASSERTION 6 /* N/A */
|
||||||
|
#define LED_PANIC 7 /* N/A */
|
||||||
|
#define LED_CPU 8 /* LED */
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Public Types
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
#ifndef __ASSEMBLY__
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Public Data
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
#undef EXTERN
|
||||||
|
#if defined(__cplusplus)
|
||||||
|
#define EXTERN extern "C"
|
||||||
|
extern "C"
|
||||||
|
{
|
||||||
|
#else
|
||||||
|
#define EXTERN extern
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Public Function Prototypes
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Name: sg2000_boardinitialize
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
void sg2000_boardinitialize(void);
|
||||||
|
|
||||||
|
#undef EXTERN
|
||||||
|
#if defined(__cplusplus)
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
#endif /* __ASSEMBLY__ */
|
||||||
|
#endif /* __BOARDS_RISCV_SG2000_MILKV_DUOS_INCLUDE_BOARD_H */
|
||||||
88
boards/risc-v/sg2000/milkv_duos/include/board_memorymap.h
Normal file
88
boards/risc-v/sg2000/milkv_duos/include/board_memorymap.h
Normal file
|
|
@ -0,0 +1,88 @@
|
||||||
|
/****************************************************************************
|
||||||
|
* boards/risc-v/sg2000/milkv_duos/include/board_memorymap.h
|
||||||
|
*
|
||||||
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
||||||
|
* contributor license agreements. See the NOTICE file distributed with
|
||||||
|
* this work for additional information regarding copyright ownership. The
|
||||||
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
||||||
|
* "License"); you may not use this file except in compliance with the
|
||||||
|
* License. You may obtain a copy of the License at
|
||||||
|
*
|
||||||
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||||||
|
*
|
||||||
|
* Unless required by applicable law or agreed to in writing, software
|
||||||
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||||
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||||
|
* License for the specific language governing permissions and limitations
|
||||||
|
* under the License.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
#ifndef __BOARDS_RISCV_SG2000_MILKV_DUOS_INCLUDE_BOARD_MEMORYMAP_H
|
||||||
|
#define __BOARDS_RISCV_SG2000_MILKV_DUOS_INCLUDE_BOARD_MEMORYMAP_H
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Included Files
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
#include <stdint.h>
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Pre-processor Definitions
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
/* DDR start address */
|
||||||
|
|
||||||
|
#define SG2000_DDR_BASE (0x50200000)
|
||||||
|
#define SG2000_DDR_SIZE (0x03e00000)
|
||||||
|
|
||||||
|
/* Kernel code memory (RX) */
|
||||||
|
|
||||||
|
#define KFLASH_START (uintptr_t)__kflash_start
|
||||||
|
#define KFLASH_SIZE (uintptr_t)__kflash_size
|
||||||
|
#define KSRAM_START (uintptr_t)__ksram_start
|
||||||
|
#define KSRAM_SIZE (uintptr_t)__ksram_size
|
||||||
|
#define KSRAM_END (uintptr_t)__ksram_end
|
||||||
|
|
||||||
|
/* Kernel RAM (RW) */
|
||||||
|
|
||||||
|
#define PGPOOL_START (uintptr_t)__pgheap_start
|
||||||
|
#define PGPOOL_SIZE (uintptr_t)__pgheap_size
|
||||||
|
|
||||||
|
/* Page pool (RWX) */
|
||||||
|
|
||||||
|
#define PGPOOL_START (uintptr_t)__pgheap_start
|
||||||
|
#define PGPOOL_SIZE (uintptr_t)__pgheap_size
|
||||||
|
#define PGPOOL_END (PGPOOL_START + PGPOOL_SIZE)
|
||||||
|
|
||||||
|
/* Ramdisk (RW) */
|
||||||
|
|
||||||
|
#define RAMDISK_START (uintptr_t)__ramdisk_start
|
||||||
|
#define RAMDISK_SIZE (uintptr_t)__ramdisk_size
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Public Data
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
/* Kernel code memory (RX) */
|
||||||
|
|
||||||
|
extern uint8_t __kflash_start[];
|
||||||
|
extern uint8_t __kflash_size[];
|
||||||
|
|
||||||
|
/* Kernel RAM (RW) */
|
||||||
|
|
||||||
|
extern uint8_t __ksram_start[];
|
||||||
|
extern uint8_t __ksram_size[];
|
||||||
|
extern uint8_t __ksram_end[];
|
||||||
|
|
||||||
|
/* Page pool (RWX) */
|
||||||
|
|
||||||
|
extern uint8_t __pgheap_start[];
|
||||||
|
extern uint8_t __pgheap_size[];
|
||||||
|
|
||||||
|
/* Ramdisk (RW) */
|
||||||
|
|
||||||
|
extern uint8_t __ramdisk_start[];
|
||||||
|
extern uint8_t __ramdisk_size[];
|
||||||
|
|
||||||
|
#endif /* __BOARDS_RISCV_SG2000_MILKV_DUOS_INCLUDE_BOARD_MEMORYMAP_H */
|
||||||
43
boards/risc-v/sg2000/milkv_duos/scripts/Make.defs
Normal file
43
boards/risc-v/sg2000/milkv_duos/scripts/Make.defs
Normal file
|
|
@ -0,0 +1,43 @@
|
||||||
|
############################################################################
|
||||||
|
# boards/risc-v/sg2000/milkv_duos/scripts/Make.defs
|
||||||
|
#
|
||||||
|
# Licensed to the Apache Software Foundation (ASF) under one or more
|
||||||
|
# contributor license agreements. See the NOTICE file distributed with
|
||||||
|
# this work for additional information regarding copyright ownership. The
|
||||||
|
# ASF licenses this file to you under the Apache License, Version 2.0 (the
|
||||||
|
# "License"); you may not use this file except in compliance with the
|
||||||
|
# License. You may obtain a copy of the License at
|
||||||
|
#
|
||||||
|
# http://www.apache.org/licenses/LICENSE-2.0
|
||||||
|
#
|
||||||
|
# Unless required by applicable law or agreed to in writing, software
|
||||||
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||||
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||||
|
# License for the specific language governing permissions and limitations
|
||||||
|
# under the License.
|
||||||
|
#
|
||||||
|
############################################################################
|
||||||
|
|
||||||
|
include $(TOPDIR)/.config
|
||||||
|
include $(TOPDIR)/tools/Config.mk
|
||||||
|
include $(TOPDIR)/arch/risc-v/src/common/Toolchain.defs
|
||||||
|
|
||||||
|
LDSCRIPT = ld.script
|
||||||
|
ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
|
||||||
|
ARCHPICFLAGS = -fpic -msingle-pic-base
|
||||||
|
|
||||||
|
CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
|
||||||
|
CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
|
||||||
|
CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
|
||||||
|
CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
|
||||||
|
CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
|
||||||
|
AFLAGS += $(CFLAGS) -D__ASSEMBLY__
|
||||||
|
|
||||||
|
# ELF module definitions
|
||||||
|
|
||||||
|
CELFFLAGS = $(CFLAGS)
|
||||||
|
CXXELFFLAGS = $(CXXFLAGS)
|
||||||
|
|
||||||
|
LDELFFLAGS = --oformat elf64-littleriscv
|
||||||
|
LDELFFLAGS += -r -e main
|
||||||
|
LDELFFLAGS += -T $(call CONVERT_PATH,$(TOPDIR)/binfmt/libelf/gnu-elf.ld)
|
||||||
151
boards/risc-v/sg2000/milkv_duos/scripts/ld.script
Normal file
151
boards/risc-v/sg2000/milkv_duos/scripts/ld.script
Normal file
|
|
@ -0,0 +1,151 @@
|
||||||
|
/****************************************************************************
|
||||||
|
* boards/risc-v/sg2000/milkv_duos/scripts/ld.script
|
||||||
|
*
|
||||||
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
||||||
|
* contributor license agreements. See the NOTICE file distributed with
|
||||||
|
* this work for additional information regarding copyright ownership. The
|
||||||
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
||||||
|
* "License"); you may not use this file except in compliance with the
|
||||||
|
* License. You may obtain a copy of the License at
|
||||||
|
*
|
||||||
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||||||
|
*
|
||||||
|
* Unless required by applicable law or agreed to in writing, software
|
||||||
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||||
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||||
|
* License for the specific language governing permissions and limitations
|
||||||
|
* under the License.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
MEMORY
|
||||||
|
{
|
||||||
|
kflash (rx) : ORIGIN = 0x80200000, LENGTH = 2048K /* w/ cache */
|
||||||
|
ksram (rwx) : ORIGIN = 0x80400000, LENGTH = 2048K /* w/ cache */
|
||||||
|
pgram (rwx) : ORIGIN = 0x80600000, LENGTH = 4096K /* w/ cache */
|
||||||
|
ramdisk (rwx) : ORIGIN = 0x80A00000, LENGTH = 16M /* w/ cache */
|
||||||
|
}
|
||||||
|
|
||||||
|
OUTPUT_ARCH("riscv")
|
||||||
|
|
||||||
|
/* Provide the kernel boundaries */
|
||||||
|
|
||||||
|
__kflash_start = ORIGIN(kflash);
|
||||||
|
__kflash_size = LENGTH(kflash);
|
||||||
|
__ksram_start = ORIGIN(ksram);
|
||||||
|
__ksram_size = LENGTH(ksram);
|
||||||
|
__ksram_end = ORIGIN(ksram) + LENGTH(ksram);
|
||||||
|
|
||||||
|
/* Page heap */
|
||||||
|
|
||||||
|
__pgheap_start = ORIGIN(pgram);
|
||||||
|
__pgheap_size = LENGTH(pgram) + LENGTH(ramdisk);
|
||||||
|
|
||||||
|
/* Application ramdisk */
|
||||||
|
|
||||||
|
__ramdisk_start = ORIGIN(ramdisk);
|
||||||
|
__ramdisk_size = LENGTH(ramdisk);
|
||||||
|
__ramdisk_end = ORIGIN(ramdisk) + LENGTH(ramdisk);
|
||||||
|
|
||||||
|
SECTIONS
|
||||||
|
{
|
||||||
|
. = 0x80200000;
|
||||||
|
|
||||||
|
.text :
|
||||||
|
{
|
||||||
|
_stext = . ;
|
||||||
|
*(.text)
|
||||||
|
*(.text.*)
|
||||||
|
*(.gnu.warning)
|
||||||
|
*(.stub)
|
||||||
|
*(.glue_7)
|
||||||
|
*(.glue_7t)
|
||||||
|
*(.jcr)
|
||||||
|
|
||||||
|
/* C++ support: The .init and .fini sections contain specific logic
|
||||||
|
* to manage static constructors and destructors.
|
||||||
|
*/
|
||||||
|
|
||||||
|
*(.gnu.linkonce.t.*)
|
||||||
|
*(.init) /* Old ABI */
|
||||||
|
*(.fini) /* Old ABI */
|
||||||
|
_etext = . ;
|
||||||
|
}
|
||||||
|
|
||||||
|
.rodata :
|
||||||
|
{
|
||||||
|
_srodata = . ;
|
||||||
|
*(.rodata)
|
||||||
|
*(.rodata1)
|
||||||
|
*(.rodata.*)
|
||||||
|
*(.gnu.linkonce.r*)
|
||||||
|
_erodata = . ;
|
||||||
|
}
|
||||||
|
|
||||||
|
.tdata : {
|
||||||
|
_stdata = ABSOLUTE(.);
|
||||||
|
*(.tdata .tdata.* .gnu.linkonce.td.*);
|
||||||
|
_etdata = ABSOLUTE(.);
|
||||||
|
}
|
||||||
|
|
||||||
|
.tbss : {
|
||||||
|
_stbss = ABSOLUTE(.);
|
||||||
|
*(.tbss .tbss.* .gnu.linkonce.tb.* .tcommon);
|
||||||
|
_etbss = ABSOLUTE(.);
|
||||||
|
}
|
||||||
|
|
||||||
|
_eronly = ABSOLUTE(.);
|
||||||
|
|
||||||
|
.data :
|
||||||
|
{
|
||||||
|
_sdata = . ;
|
||||||
|
*(.data)
|
||||||
|
*(.data1)
|
||||||
|
*(.data.*)
|
||||||
|
*(.gnu.linkonce.d*)
|
||||||
|
. = ALIGN(4);
|
||||||
|
_edata = . ;
|
||||||
|
}
|
||||||
|
|
||||||
|
.bss :
|
||||||
|
{
|
||||||
|
_sbss = . ;
|
||||||
|
*(.bss)
|
||||||
|
*(.bss.*)
|
||||||
|
*(.sbss)
|
||||||
|
*(.sbss.*)
|
||||||
|
*(.gnu.linkonce.b*)
|
||||||
|
*(COMMON)
|
||||||
|
. = ALIGN(32);
|
||||||
|
_ebss = . ;
|
||||||
|
} > ksram
|
||||||
|
|
||||||
|
/* Page tables here, align to 4K boundary */
|
||||||
|
|
||||||
|
.pgtables (NOLOAD) : ALIGN(0x1000) {
|
||||||
|
*(.pgtables)
|
||||||
|
. = ALIGN(4);
|
||||||
|
} > ksram
|
||||||
|
|
||||||
|
/* Stack top */
|
||||||
|
|
||||||
|
.stack_top : {
|
||||||
|
. = ALIGN(32);
|
||||||
|
_ebss = ABSOLUTE(.);
|
||||||
|
} > ksram
|
||||||
|
|
||||||
|
/* Stabs debugging sections. */
|
||||||
|
|
||||||
|
.stab 0 : { *(.stab) }
|
||||||
|
.stabstr 0 : { *(.stabstr) }
|
||||||
|
.stab.excl 0 : { *(.stab.excl) }
|
||||||
|
.stab.exclstr 0 : { *(.stab.exclstr) }
|
||||||
|
.stab.index 0 : { *(.stab.index) }
|
||||||
|
.stab.indexstr 0 : { *(.stab.indexstr) }
|
||||||
|
.comment 0 : { *(.comment) }
|
||||||
|
.debug_abbrev 0 : { *(.debug_abbrev) }
|
||||||
|
.debug_info 0 : { *(.debug_info) }
|
||||||
|
.debug_line 0 : { *(.debug_line) }
|
||||||
|
.debug_pubnames 0 : { *(.debug_pubnames) }
|
||||||
|
.debug_aranges 0 : { *(.debug_aranges) }
|
||||||
|
}
|
||||||
2
boards/risc-v/sg2000/milkv_duos/src/.gitignore
vendored
Normal file
2
boards/risc-v/sg2000/milkv_duos/src/.gitignore
vendored
Normal file
|
|
@ -0,0 +1,2 @@
|
||||||
|
etctmp
|
||||||
|
etctmp.c
|
||||||
27
boards/risc-v/sg2000/milkv_duos/src/Makefile
Normal file
27
boards/risc-v/sg2000/milkv_duos/src/Makefile
Normal file
|
|
@ -0,0 +1,27 @@
|
||||||
|
############################################################################
|
||||||
|
# boards/risc-v/sg2000/milkv_duos/src/Makefile
|
||||||
|
#
|
||||||
|
# Licensed to the Apache Software Foundation (ASF) under one or more
|
||||||
|
# contributor license agreements. See the NOTICE file distributed with
|
||||||
|
# this work for additional information regarding copyright ownership. The
|
||||||
|
# ASF licenses this file to you under the Apache License, Version 2.0 (the
|
||||||
|
# "License"); you may not use this file except in compliance with the
|
||||||
|
# License. You may obtain a copy of the License at
|
||||||
|
#
|
||||||
|
# http://www.apache.org/licenses/LICENSE-2.0
|
||||||
|
#
|
||||||
|
# Unless required by applicable law or agreed to in writing, software
|
||||||
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||||
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||||
|
# License for the specific language governing permissions and limitations
|
||||||
|
# under the License.
|
||||||
|
#
|
||||||
|
############################################################################
|
||||||
|
|
||||||
|
include $(TOPDIR)/Make.defs
|
||||||
|
|
||||||
|
RCSRCS = etc/init.d/rc.sysinit etc/init.d/rcS
|
||||||
|
|
||||||
|
CSRCS = sg2000_appinit.c
|
||||||
|
|
||||||
|
include $(TOPDIR)/boards/Board.mk
|
||||||
19
boards/risc-v/sg2000/milkv_duos/src/etc/init.d/rc.sysinit
Normal file
19
boards/risc-v/sg2000/milkv_duos/src/etc/init.d/rc.sysinit
Normal file
|
|
@ -0,0 +1,19 @@
|
||||||
|
/****************************************************************************
|
||||||
|
* boards/risc-v/sg2000/milkv_duos/src/etc/init.d/rc.sysinit
|
||||||
|
*
|
||||||
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
||||||
|
* contributor license agreements. See the NOTICE file distributed with
|
||||||
|
* this work for additional information regarding copyright ownership. The
|
||||||
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
||||||
|
* "License"); you may not use this file except in compliance with the
|
||||||
|
* License. You may obtain a copy of the License at
|
||||||
|
*
|
||||||
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||||||
|
*
|
||||||
|
* Unless required by applicable law or agreed to in writing, software
|
||||||
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||||
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||||
|
* License for the specific language governing permissions and limitations
|
||||||
|
* under the License.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
19
boards/risc-v/sg2000/milkv_duos/src/etc/init.d/rcS
Normal file
19
boards/risc-v/sg2000/milkv_duos/src/etc/init.d/rcS
Normal file
|
|
@ -0,0 +1,19 @@
|
||||||
|
/****************************************************************************
|
||||||
|
* boards/risc-v/sg2000/milkv_duos/src/etc/init.d/rcS
|
||||||
|
*
|
||||||
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
||||||
|
* contributor license agreements. See the NOTICE file distributed with
|
||||||
|
* this work for additional information regarding copyright ownership. The
|
||||||
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
||||||
|
* "License"); you may not use this file except in compliance with the
|
||||||
|
* License. You may obtain a copy of the License at
|
||||||
|
*
|
||||||
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||||||
|
*
|
||||||
|
* Unless required by applicable law or agreed to in writing, software
|
||||||
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||||
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||||
|
* License for the specific language governing permissions and limitations
|
||||||
|
* under the License.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
167
boards/risc-v/sg2000/milkv_duos/src/sg2000_appinit.c
Normal file
167
boards/risc-v/sg2000/milkv_duos/src/sg2000_appinit.c
Normal file
|
|
@ -0,0 +1,167 @@
|
||||||
|
/****************************************************************************
|
||||||
|
* boards/risc-v/sg2000/milkv_duos/src/sg2000_appinit.c
|
||||||
|
*
|
||||||
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
||||||
|
* contributor license agreements. See the NOTICE file distributed with
|
||||||
|
* this work for additional information regarding copyright ownership. The
|
||||||
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
||||||
|
* "License"); you may not use this file except in compliance with the
|
||||||
|
* License. You may obtain a copy of the License at
|
||||||
|
*
|
||||||
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||||||
|
*
|
||||||
|
* Unless required by applicable law or agreed to in writing, software
|
||||||
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||||
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||||
|
* License for the specific language governing permissions and limitations
|
||||||
|
* under the License.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Included Files
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
#include <nuttx/config.h>
|
||||||
|
|
||||||
|
#include <stdbool.h>
|
||||||
|
#include <stdio.h>
|
||||||
|
#include <syslog.h>
|
||||||
|
#include <errno.h>
|
||||||
|
|
||||||
|
#include <nuttx/board.h>
|
||||||
|
#include <nuttx/drivers/ramdisk.h>
|
||||||
|
#include <sys/mount.h>
|
||||||
|
#include <sys/boardctl.h>
|
||||||
|
#include <arch/board/board_memorymap.h>
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Pre-processor Definitions
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
/* Ramdisk Definition */
|
||||||
|
|
||||||
|
#define SECTORSIZE 512
|
||||||
|
#define NSECTORS(b) (((b) + SECTORSIZE - 1) / SECTORSIZE)
|
||||||
|
#define RAMDISK_DEVICE_MINOR 0
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Private Functions
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Name: mount_ramdisk
|
||||||
|
*
|
||||||
|
* Description:
|
||||||
|
* Mount a ramdisk defined in the ld.script to /dev/ramX. The ramdisk is
|
||||||
|
* intended to contain a romfs with applications which can be spawned at
|
||||||
|
* runtime.
|
||||||
|
*
|
||||||
|
* Returned Value:
|
||||||
|
* OK is returned on success.
|
||||||
|
* -ERRORNO is returned on failure.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
static int mount_ramdisk(void)
|
||||||
|
{
|
||||||
|
int ret;
|
||||||
|
struct boardioc_romdisk_s desc;
|
||||||
|
|
||||||
|
desc.minor = RAMDISK_DEVICE_MINOR;
|
||||||
|
desc.nsectors = NSECTORS((ssize_t)__ramdisk_size);
|
||||||
|
desc.sectsize = SECTORSIZE;
|
||||||
|
desc.image = __ramdisk_start;
|
||||||
|
|
||||||
|
ret = boardctl(BOARDIOC_ROMDISK, (uintptr_t)&desc);
|
||||||
|
if (ret < 0)
|
||||||
|
{
|
||||||
|
syslog(LOG_ERR, "Ramdisk register failed: %s\n", strerror(errno));
|
||||||
|
syslog(LOG_ERR, "Ramdisk mountpoint /dev/ram%d\n",
|
||||||
|
RAMDISK_DEVICE_MINOR);
|
||||||
|
syslog(LOG_ERR, "Ramdisk length %lu, origin %lx\n",
|
||||||
|
(ssize_t)__ramdisk_size, (uintptr_t)__ramdisk_start);
|
||||||
|
}
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Public Functions
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Name: board_app_initialize
|
||||||
|
*
|
||||||
|
* Description:
|
||||||
|
* Perform architecture specific initialization
|
||||||
|
*
|
||||||
|
* Input Parameters:
|
||||||
|
* arg - The boardctl() argument is passed to the board_app_initialize()
|
||||||
|
* implementation without modification. The argument has no
|
||||||
|
* meaning to NuttX; the meaning of the argument is a contract
|
||||||
|
* between the board-specific initialization logic and the
|
||||||
|
* matching application logic. The value could be such things as a
|
||||||
|
* mode enumeration value, a set of DIP switch switch settings, a
|
||||||
|
* pointer to configuration data read from a file or serial FLASH,
|
||||||
|
* or whatever you would like to do with it. Every implementation
|
||||||
|
* should accept zero/NULL as a default configuration.
|
||||||
|
*
|
||||||
|
* Returned Value:
|
||||||
|
* Zero (OK) is returned on success; a negated errno value is returned on
|
||||||
|
* any failure to indicate the nature of the failure.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
int board_app_initialize(uintptr_t arg)
|
||||||
|
{
|
||||||
|
#ifdef CONFIG_BOARD_LATE_INITIALIZE
|
||||||
|
/* Board initialization already performed by board_late_initialize() */
|
||||||
|
|
||||||
|
return OK;
|
||||||
|
#else
|
||||||
|
/* Perform board-specific initialization */
|
||||||
|
|
||||||
|
#ifdef CONFIG_NSH_ARCHINIT
|
||||||
|
|
||||||
|
mount(NULL, "/proc", "procfs", 0, NULL);
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
||||||
|
return OK;
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Name: board_late_initialize
|
||||||
|
*
|
||||||
|
* Description:
|
||||||
|
* If CONFIG_BOARD_LATE_INITIALIZE is selected, then an additional
|
||||||
|
* initialization call will be performed in the boot-up sequence to a
|
||||||
|
* function called board_late_initialize(). board_late_initialize() will
|
||||||
|
* be called after up_initialize() and board_early_initialize() and just
|
||||||
|
* before the initial application is started. This additional
|
||||||
|
* initialization phase may be used, for example, to initialize board-
|
||||||
|
* specific device drivers for which board_early_initialize() is not
|
||||||
|
* suitable.
|
||||||
|
*
|
||||||
|
* Waiting for events, use of I2C, SPI, etc are permissible in the context
|
||||||
|
* of board_late_initialize(). That is because board_late_initialize()
|
||||||
|
* will run on a temporary, internal kernel thread.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
void board_late_initialize(void)
|
||||||
|
{
|
||||||
|
/* Mount the RAM Disk */
|
||||||
|
|
||||||
|
mount_ramdisk();
|
||||||
|
|
||||||
|
/* Perform board-specific initialization */
|
||||||
|
|
||||||
|
#ifdef CONFIG_NSH_ARCHINIT
|
||||||
|
|
||||||
|
mount(NULL, "/proc", "procfs", 0, NULL);
|
||||||
|
|
||||||
|
#endif
|
||||||
|
}
|
||||||
Loading…
Reference in a new issue