62216b7295
Memory is on-demand allocated, meaning it's entirely possible to allocate and free memory without ever touching physical pages. Previously, when we attempted to free memory, it would skip over pages that were never backed by real memory. With this patch, we continue to free the virtual page even if there is no associated physical page. Signed-off-by: Sean Cross <sean@xobs.io> |
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| .cargo | ||
| .vscode | ||
| bin | ||
| src | ||
| utralib | ||
| assemble.ps1 | ||
| assemble.sh | ||
| build.rs | ||
| Cargo.lock | ||
| Cargo.toml | ||
| link.x | ||
| 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.
- 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 useriscv32imac-unknown-none-elf. - Get Rust. Go to https://rustup.rs/ and follow its instructions.
- Install the proper toolchain:
rustup target add ${target_arch} - 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
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.