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Apache NuttX RTOS for Pine64 Ox64 BL808 RISC-V SBC
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@lupyuen lupyuen released this 18 Jan 03:38
nuttx-12.4.0
96c2707

NuttX Source: https://github.com/apache/nuttx/tree/96c2707737391642ac1d3ade84fb03f4c1fa51e4

NuttX Apps: https://github.com/apache/nuttx-apps/tree/f12586c51e0003c03e708b09baaf21348891f370

Inside menuconfig, we selected...

Build Setup > Debug Options

  • Enable "Debug Features"
  • Enable "Debug Assertions > Show Expression, Filename"
  • Enable "File System Debug Features > Errors, Warnings"
  • Enable "C Library Debug Features > Errors, Warnings, Info"
  • Enable "Memory Manager Debug Features > Errors, Warnings"
  • Enable "Scheduler Debug Features > Errors, Warnings, Info"
  • Enable "SYSCALL Debug Features > Errors, Warnings"
  • Enable "Timer Debug Features > Errors, Warnings, Info"
  • Enable "IPC Debug Features > Errors, Warnings, Info"

Build Script:

#!/usr/bin/env bash
#  Build NuttX for Ox64

## TODO: Set PATH
export PATH="$HOME/riscv64-unknown-elf-toolchain-10.2.0-2020.12.8-x86_64-apple-darwin/bin:$PATH"

set -e  #  Exit when any command fails
set -x  #  Echo commands

## Build NuttX
function build_nuttx {

  ## Go to NuttX Folder
  pushd ../nuttx

  ## Build NuttX
  make -j 8

  ## Return to previous folder
  popd
}

## Build Apps Filesystem
function build_apps {

  ## Go to NuttX Folder
  pushd ../nuttx

  ## Build Apps Filesystem
  make -j 8 export
  pushd ../apps
  ./tools/mkimport.sh -z -x ../nuttx/nuttx-export-*.tar.gz
  make -j 8 import
  popd

  ## Return to previous folder
  popd
}

## Pull updates
git pull && git status && hash1=`git rev-parse HEAD`
pushd ../apps
git pull && git status && hash2=`git rev-parse HEAD`
popd
echo NuttX Source: https://github.com/apache/nuttx/tree/$hash1 >nuttx.hash
echo NuttX Apps: https://github.com/apache/nuttx-apps/tree/$hash2 >>nuttx.hash

## Show the versions of GCC and Zig
riscv64-unknown-elf-gcc -v

## Configure build
tools/configure.sh ox64:nsh

## Build NuttX
build_nuttx

## Build Apps Filesystem
build_apps

## Generate Initial RAM Disk
genromfs -f initrd -d ../apps/bin -V "NuttXBootVol"

## Show the size
riscv64-unknown-elf-size nuttx

## Export the Binary Image to `nuttx.bin`
riscv64-unknown-elf-objcopy \
  -O binary \
  nuttx \
  nuttx.bin

## Prepare a Padding with 64 KB of zeroes
head -c 65536 /dev/zero >/tmp/nuttx.pad

## Append Padding and Initial RAM Disk to NuttX Kernel
cat nuttx.bin /tmp/nuttx.pad initrd \
  >Image

## Copy the config
cp .config nuttx.config

## Dump the disassembly to nuttx.S
riscv64-unknown-elf-objdump \
  --syms --source --reloc --demangle --line-numbers --wide \
  --debugging \
  nuttx \
  >nuttx.S \
  2>&1

## Dump the init disassembly to init.S
riscv64-unknown-elf-objdump \
  --syms --source --reloc --demangle --line-numbers --wide \
  --debugging \
  ../apps/bin/init \
  >init.S \
  2>&1

## Dump the hello disassembly to hello.S
riscv64-unknown-elf-objdump \
  --syms --source --reloc --demangle --line-numbers --wide \
  --debugging \
  ../apps/bin/hello \
  >hello.S \
  2>&1

## Copy to Web Server
cp $HOME/ox64/nuttx/Image        $HOME/riscv/nuttx-tinyemu/docs/ox64/
cp $HOME/ox64/nuttx/nuttx.bin    $HOME/riscv/nuttx-tinyemu/docs/ox64/
cp $HOME/ox64/nuttx/nuttx.S      $HOME/riscv/nuttx-tinyemu/docs/ox64/
cp $HOME/ox64/nuttx/nuttx.hash   $HOME/riscv/nuttx-tinyemu/docs/ox64/
cp $HOME/ox64/nuttx/nuttx.config $HOME/riscv/nuttx-tinyemu/docs/ox64/
cp $HOME/ox64/nuttx/initrd       $HOME/riscv/nuttx-tinyemu/docs/ox64/
cp $HOME/ox64/nuttx/init.S       $HOME/riscv/nuttx-tinyemu/docs/ox64/
cp $HOME/ox64/nuttx/hello.S      $HOME/riscv/nuttx-tinyemu/docs/ox64/
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