83 lines
1.8 KiB
ReStructuredText
83 lines
1.8 KiB
ReStructuredText
===========================
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Microchip Polarfile (MPFS)
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===========================
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RV64 64-bit RISC-V multiprocessor-based Microcontroller Subsystem
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(MPFS025T, MPFS095T, MPFS160T, MPFS250T, MPFS460T)
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MPFS Toolchain
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==============
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A generic RISC-V toolchain can be used to build MPFS projects.
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Like: https://xpack.github.io/riscv-none-embed-gcc or https://github.com/sifive/freedom-tools/releases
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Booting
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=======
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The NuttX port for now relies on HSS bootloader to carry on some hardware initializations.
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Building and flashing
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=====================
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First make sure that ``hss-payload-generator`` is installed.
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Available from: https://github.com/polarfire-soc/hart-software-services
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This tool is used to convert the ELF/bin to a compatible HSS payload image
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Configure the NuttX project: ``./tools/configure.sh icicle:nsh``
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Run ``make`` to build the project.
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Create HSS payload bin::
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hss-payload-generator -v -c hss-nuttx.yml payload.bin
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Debugging with OpenOCD
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======================
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Compatible OpenOCD and configs can be downloaded from:
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https://www.microsemi.com/product-directory/design-tools/4879-softconsole#downloads
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OpenOCD can then be used::
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openocd -c "set DEVICE MPFS" --file board/microsemi-riscv.cfg
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Peripheral Support
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==================
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The following list indicates the state of peripherals' support in NuttX:
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============ ======= =====
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Peripheral Support NOTES
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============ ======= =====
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GPIO Yes
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MMUART Yes Uart mode only
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SPI Yes
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I2C Yes
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eMMC SD/SDIO Yes eMMC not fully tested
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Timers No
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Watchdog No
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RTC No
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CAN No
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eNVM No
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USB No
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============ ======= =====
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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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