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WIP: Apache NuttX RTOS for Pine64 Star64 JH7110 RISC-V SBC (Fixed PLIC)

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@lupyuen lupyuen released this 01 Aug 08:38
star64d-0.0.1
866da12

Read the article...

See below for the Build Outputs. We built NuttX with these steps...

## Install the Build Prerequisites and Toolchain:
## https://lupyuen.github.io/articles/nuttx#install-prerequisites
## https://lupyuen.github.io/articles/riscv#appendix-download-toolchain-for-64-bit-risc-v

## Download the `star64d` branch of our WIP NuttX Repos
mkdir nuttx
cd nuttx
git clone --branch star64d https://github.com/lupyuen2/wip-pinephone-nuttx nuttx
git clone --branch star64d https://github.com/lupyuen2/wip-pinephone-nuttx-apps apps

## Configure and build NuttX
cd nuttx
tools/configure.sh rv-virt:knsh64
make

## Build Apps Filesystem
make export V=1
pushd ../apps
./tools/mkimport.sh -z -x ../nuttx/nuttx-export-*.tar.gz
make import V=1
popd

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

## We assume that `nuttx` contains the NuttX ELF Image.
## Export the NuttX Binary Image to `nuttx.bin`
riscv64-unknown-elf-objcopy \
  -O binary \
  nuttx \
  nuttx.bin

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

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

## Copy the config to nuttx.config
cp .config nuttx.config

## Copy NuttX Binary Image, Device Tree and
## Initial RAM Disk to TFTP Folder
cp nuttx.bin $HOME/tftproot/Image
cp jh7110-star64-pine64.dtb $HOME/tftproot
cp initrd $HOME/tftproot

## Boot NuttX over TFTP:
## https://lupyuen.github.io/articles/semihost#appendix-boot-nuttx-over-tftp-with-initial-ram-disk

Here's the Star64 Output Log...

123067BCnx_start: Entry
up_irq_enable: 
up_enable_irq: irq=17
up_enable_irq: RISCV_IRQ_SOFT=17
uart_register: Registering /dev/console
uart_register: Registering /dev/ttyS0
work_start_lowpri: Starting low-priority kernel worker thread(s)
board_late_initialize: 
nx_start_application: Starting init task: /system/bin/init
elf_symname: Symbol has no name
elf_symvalue: SHN_UNDEF: Failed to get symbol name: -3
elf_relocateadd: Section 2 reloc 2: Undefined symbol[0] has no name: -3
nx_start_application: ret=3
up_exit: TCB=0x404088d0 exiting
up_enable_irq: irq=57
up_enable_irq: extirq=32, RISCV_IRQ_EXT=25
..***main

NuttShell (NSH) NuttX-12.0.3
nsh> ......++.+.l......s......
................................................p.o.s.i.x._.s.p.a.w.n..:. .p.i.d.=...0.x.c.0.2.0.2.9.7.8. .p.a.t.h.=..l.s. .f.i.l.e._.a.c.t.i.o.n.s.=...0.x.c.0.2.0.2.9.8.0. .a.t.t.r.=...0.x.c.0.2.0.2.9.8.8. .a.r.g.v.=...0.x.c.0.2.0.2.a.2.8.
.........................................................e.x.e.c._.s.p.a.w.n.:. .E.R.R.O..R.:. .F.a.i.l.e.d. .t.o. .l.o.a.d. .p.r.o.g.r.a.m. .'..l.s.'.:. ..-.2.
.......n.x.p.o.s.i.x._.s.p.a.w.n._.e.x.e.c.:. .E.R.R.O.R.:. .e.x.e.c. .f.a.i.l.e.d.:. ..2.
............................................................................................................../:
............................................................... dev......../
.............. proc......../
............... system........./
.............................................................nsh> ...................n.x._.s.t.a.r.t.:. .C.P.U.0.:. .B.e.g.i.n.n.i.n.g. .I.d.l.e. .L.o.o.p.
..........................
Assets 12