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xous-core/kernel
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bunnie c23bed360f implement extraction of kernel analytics 
this is gated behind the feature "debug-proc" because this could
leak attacker-useful information, and also it adds a primitive that
causes the kernel to write the debug information into any page
that the userspace already has access to. There are some checks
to ensure that the page is actually in RAM (so you can't use this
to trigger weird peripheral states, etc.) so hypothetically this
should just cause corruption in the userspace process if it is
abused, but still - more attack surface, more problems.

however, the feature is useful enough and the risk is small enough
that I think I'm going to leave it enabled for the foreseeable future.
It's definitely helpful to be able to see how much free memory
you have, and other resource allocation trackers like connection
limits and interrupt handler allocations.
2026-01-08 02:56:33 +08:00
..
bin add the .a artifacts to the tree for the asm.S 2024-01-06 16:41:40 +08:00
src implement extraction of kernel analytics 2026-01-08 02:56:33 +08:00
test add a target for the kernel specifically on the boards 2025-05-06 19:09:37 +08:00
assemble.ps1 kernel: asm: align kernel stack to 16 bytes 2023-12-29 18:15:48 +08:00
assemble.sh kernel: asm: align kernel stack to 16 bytes 2023-12-29 18:15:48 +08:00
build.rs ok, format the kernel now that all in-line assembly has been checked 2024-01-14 19:27:14 +08:00
Cargo.toml implement extraction of kernel analytics 2026-01-08 02:56:33 +08:00
link.x add an "endcap" to the kernel region 2023-01-17 23:07:05 +08:00
README.md

README.md

Xous Kernel

This contains the core kernel for Xous. It requires a stage 1 loader in order to start up, as it assumes the system is already running in Supervisor mode.

Building

To build the kernel, you will need a riscv32 target for Rust. Possible targets include riscv32i-unknown-none-elf, riscv32imac-unknown-none-elf, or riscv32imac-unknown-xous-elf.

  1. Decide what target you want. For simple, embedded systems this could be riscv32i-unknown-none-elf, and for more complex systems with compressed instructions you could use riscv32imac-unknown-none-elf.
  2. Get Rust. Go to https://rustup.rs/ and follow its instructions.
  3. Install the proper toolchain: rustup target add ${target_arch}
  4. Build the kernel: cargo build --release --target ${target_arch}

Using

To use the kernel, you must package it up into an arguments binary with xous-tools.

Testing

TBD

Contribution Guidelines

Contributor Covenant

Please see CONTRIBUTING for details on how to make a contribution.

Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide its terms.

License

Copyright © 2020

This project is licensed under the Apache License 2.0 LICENSE. For accurate information, please check individual files.