nuttx

History

Masayuki Ishikawa 29d3ed2ec1 Feature k210 smp (#71 ) * arch: risc-v: Remove unused typedef for irqstate_t NOTE: irqstate_t is defined in arch/risc-v/include/types.h * arch: risc-v: Add typedef irqstate_t for __LP64__ * arch: risc-v: Add SMP support to K210 (RV64GC) processor * boards: maxi-bit: Update READMEs and add smp/defconfig		2020-01-10 08:04:41 -06:00
..
configs	Feature k210 smp (#71 )	2020-01-10 08:04:41 -06:00
include
scripts
src
Kconfig
README-qemu.txt	Feature k210 smp (#71 )	2020-01-10 08:04:41 -06:00
README.txt	Feature k210 smp (#71 )	2020-01-10 08:04:41 -06:00

README.txt

1. Download and install toolchain and openocd-k210

  $ curl https://static.dev.sifive.com/dev-tools/riscv64-unknown-elf-gcc-8.3.0-2019.08.0-x86_64-linux-ubuntu14.tar.gz

2. Build openocd-k210

  $ git clone https://github.com/kendryte/openocd-kendryte
  $ cd openocd-kendryte
  $ ./bootstrap & ./configure & make

3. Configure and build NuttX

  $ mkdir ./nuttx; cd ./nuttx
  $ git clone https://bitbucket.org/nuttx/nuttx.git
  $ git clone https://bitbucket.org/nuttx/apps.git
  $ cd nuttx
  $ make distclean
  $ ./tools/configure.sh maix-bit:nsh
  $ make V=1

4. Download and run the nuttx from SRAM (not SPI-Flash)

  $ picocom -b 115200 /dev/ttyUSB0
  $ sudo ./src/openocd -s ./tcl -f ./tcl/kendryte.cfg -m 0
  $ riscv64-unknown-elf-gdb ./nuttx
  (gdb) target extended-remote :3333
  (gdb) load nuttx
  (gdb) c

5. TODO

  PLL setting (currently CPU clock freq is assumed to be 416MHz)
  Boot from SPI-Flash
  Support peripherals such as GPIO/SPI/I2C/...
  Support FPU
  Support RISC-V User mode