nuttx

History

Huang Qi 10bb48b9b4 arch/risc-v: Merge rv32im and rv64gc into common Signed-off-by: Huang Qi <huangqi3@xiaomi.com>		2022-01-11 23:24:33 +08:00
..
configs/nsh	arch/risc-v: Merge rv32im and rv64gc into common	2022-01-11 23:24:33 +08:00
include
scripts	arch/risc-v: Refine Toolchain.defs	2021-12-28 00:30:10 -06:00
src	Rename CONFIG_LIB_BOARDCTL to CONFIG_BOARDCTL	2021-08-06 13:58:26 +02:00
Kconfig
README.txt	Fix git clone repository	2021-01-20 22:35:59 +09:00

README.txt

1. Download and install toolchain

  $ 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. Follow instruction on https://github.com/enjoy-digital/litex to build the vexriscv softcore fpga gateware
   and flash to arty_a7 board

3. Configure and build NuttX

  $ mkdir ./nuttx; cd ./nuttx
  $ git clone https://github.com/apache/incubator-nuttx.git
  $ git clone https://github.com/apache/incubator-nuttx-apps.git
  $ cd nuttx
  $ make distclean
  $ ./tools/configure.sh arty_a7:nsh
  $ make V=1

4. Setup tftp server on your laptop, copy nuttx.bin to your tftpboot directory and change its name to boot.bin

5. Setup the wire connection(uart and tftp) between your board and laptop

6. Run  $ minicom -b 1000000 /dev/ttyUSB1 (the default baudrate on litex vexriscv is 1e6)
   when you see the bios prompt "litex>", type "netboot" and enter soon comes the nsh prompt

7. TODO

  Support GPIO/SPI/I2C/RTC/WDT/PWM
  Support RISC-V User mode