2019-12-31 16:06:20 +01:00
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1. Download and install toolchain and openocd-k210
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$ curl https://static.dev.sifive.com/dev-tools/riscv64-unknown-elf-gcc-8.3.0-2019.08.0-x86_64-linux-ubuntu14.tar.gz
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2. Build openocd-k210
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$ git clone https://github.com/kendryte/openocd-kendryte
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$ cd openocd-kendryte
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$ ./bootstrap & ./configure & make
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3. Configure and build NuttX
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$ mkdir ./nuttx; cd ./nuttx
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$ git clone https://bitbucket.org/nuttx/nuttx.git
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$ git clone https://bitbucket.org/nuttx/apps.git
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$ cd nuttx
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$ make distclean
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$ ./tools/configure.sh maix-bit:nsh
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$ make V=1
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4. Download and run the nuttx from SRAM (not SPI-Flash)
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$ picocom -b 115200 /dev/ttyUSB0
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$ sudo ./src/openocd -s ./tcl -f ./tcl/kendryte.cfg -m 0
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$ riscv64-unknown-elf-gdb ./nuttx
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(gdb) target extended-remote :3333
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(gdb) load nuttx
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(gdb) c
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5. TODO
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PLL setting (currently CPU clock freq is assumed to be 416MHz)
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Boot from SPI-Flash
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Support peripherals such as GPIO/SPI/I2C/...
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2020-01-10 15:04:41 +01:00
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Support FPU
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2019-12-31 16:06:20 +01:00
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Support RISC-V User mode
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