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Apache NuttX RTOS for TinyEMU Emulator: Test Version (64-bit RISC-V)
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@lupyuen lupyuen released this 09 Jan 10:54
· 214 commits to main since this release
v0.0.1
c5c1f5f

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This is the Test Version of NuttX on TinyEMU: Print to VirtIO Console and halt.

Build Script:

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

## 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
}

## Download WIP NuttX
git clone --branch tinyemu https://github.com/lupyuen2/wip-pinephone-nuttx nuttx
git clone --branch tinyemu https://github.com/lupyuen2/wip-pinephone-nuttx-apps apps

## Configure NuttX for QEMU RISC-V (64-bit, Flat Mode)
cd nuttx
tools/configure.sh rv-virt:nsh64
make menuconfig
## Device Drivers
##   Enable "Simple AddrEnv"
##   Enable "Virtio Device Support"

## Device Drivers > Virtio Device Support
##   Enable "Virtio MMIO Device Support"

## Build Setup > Debug Options >
##   Enable Debug Features
##   Enable "Debug Assertions > Show Expression, Filename"
##   Enable "Binary Loader Debug Features > Errors, Warnings, Info"
##   Enable "File System Debug Features > Errors, Warnings, Info"
##   Enable "C Library Debug Features > Errors, Warnings, Info"
##   Enable "Memory Manager Debug Features > Errors, Warnings, Info"
##   Enable "Scheduler Debug Features > Errors, Warnings, Info"
##   Enable "Timer Debug Features > Errors, Warnings, Info"
##   Enable "IPC Debug Features > Errors, Warnings, Info"
##   Enable "Virtio Debug Features > Error, Warnings, Info"

## Application Configuration > Testing >
##   Enable "OS Test Example"
## Save and exit menuconfig

## 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
riscv64-unknown-elf-gcc -v

## Build NuttX
build_nuttx

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

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

## 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

## Copy to Web Server
wget --output-document=nuttx.cfg https://raw.githubusercontent.com/lupyuen/nuttx-tinyemu/main/docs/root-riscv64.cfg
cp nuttx.cfg ../nuttx-tinyemu/docs/root-riscv64.cfg
cp nuttx.bin ../nuttx-tinyemu/docs/
cp nuttx.S ../nuttx-tinyemu/docs/
cp nuttx.hash ../nuttx-tinyemu/docs/
cp nuttx.config ../nuttx-tinyemu/docs/

## Start Web Server
echo simple-http-server $HOME/riscv/nuttx-tinyemu/docs/ &
echo http://localhost:8080

## Start TinyEMU
temu nuttx.cfg
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