A Neotron BIOS that runs on qemu-system-arm.
We use QEMU to emulate an Arm Cortex-M3 developer kit - the MPS3-AN547.
Just install qemu-system-arm and run:
$ zcat src/disk.img.gz > src/disk.img # Unpack a fresh disk image
$ cargo run
Compiling neotron-qemu-bios v0.1.0 (/home/user/Neotron-QEMU-BIOS)
Finished dev [unoptimized + debuginfo] target(s) in 0.23s
Running `qemu-system-arm -cpu cortex-m55 -machine mps3-an547 -serial stdio -kernel target/thumbv7m-none-eabi/debug/neotron-qemu-bios`
Neotron QEMU BIOS 0.1.0
Configured Serial console on Serial 0
Welcome to Neotron OS, version 0.3.3 (git:heads/lib-mode-0-g0fda2b0-dirty)!
Copyright © Jonathan 'theJPster' Pallant and the Neotron Developers, 2022
TPA: 487424 bytes @ 0x20001000
> By default, the Neotron OS console is the console where you ran QEMU. The QEMU command line is in .cargo/config.toml.
To debug, edit the runner line in the config.toml (see the comment above it), and then connect with GDB to boot the system:
$ gdb ./target/thumbv7m-none-eabi/debug/neotron-qemu-biosYou can also use an ARM Corstone SSE-300 Fixed Virtual Platform (FVP), which emulates a Cortex-M55. This is a free-of-charge download from Arm at https://developer.arm.com/downloads/-/arm-ecosystem-fvps. When you run this, the UART console will appear in an xterm window (so make sure you have xterm installed ... I don't know what it does on Windows).
$ zcat src/disk.img.gz > src/disk.img # Unpack a fresh disk image
$ cargo build
$ ~/FVP_Corstone_SSE-300/models/Linux64_GCC-6.4/FVP_Corstone_SSE-300_Ethos-U55 \
-a ~/Documents/github/Neotron-QEMU-BIOS/target/thumbv7m-none-eabi/debug/neotron-qemu-bios
telnetterminal0: Listening for serial connection on port 5000
telnetterminal1: Listening for serial connection on port 5001
telnetterminal2: Listening for serial connection on port 5002
telnetterminal5: Listening for serial connection on port 5003
Ethos-U rev 136b7d75 --- Nov 25 2021 12:05:57
(C) COPYRIGHT 2019-2021 Arm Limited
ALL RIGHTS RESERVED
The samples in the disk image are from https://github.com/Neotron-Compute/Neotron-SDK/tree/a2f224840c4cd5076c767e0df2322b10bde24945.
This BIOS will run on QEMU when set to emulate an Arm MPS3-AN547 (-machine mps3-an547), or on the Arm FVP for that platform. I guess it'll run on the real thing, but they're probably very expensive.
- Serial output, which goes to and comes from the QEMU console.
- None
v0.1.0 (Source
- First release
Neotron-QEMU-BIOS
Copyright (c) Jonathan 'theJPster' Pallant, 2023
Copyright (c) The Neotron Developers, 2023
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you shall be licensed as above, without any additional terms or conditions.