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Xous SDK (pinned for betrusted transpilation)
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Sean Cross ed977fd564 kernel: initial work to support lending pages 
This lays groundwork to support lending pages from one process to
another, and to restore permissions when pages are handed back.

Signed-off-by: Sean Cross <sean@xobs.io>
2020-04-02 17:40:14 +08:00
docs kernel: initial work to support lending pages 2020-04-02 17:40:14 +08:00
emulation messaging: first message passing example 2020-03-30 16:07:58 +08:00
examples kernel: initial work to support lending pages 2020-04-02 17:40:14 +08:00
kernel kernel: initial work to support lending pages 2020-04-02 17:40:14 +08:00
loader messaging: first message passing example 2020-03-30 16:07:58 +08:00
tools tools: generate byte addresses for mini elf files 2020-03-12 15:29:26 +08:00
xous-rs kernel: get immutable borrows working 2020-04-01 17:27:59 +08:00
.gitattributes initial commit 2020-03-10 12:13:05 +08:00
.gitignore initial commit 2020-03-10 12:13:05 +08:00
Cargo.lock cargo: add lock file for sha3 implementation 2020-03-16 19:04:46 +08:00
Cargo.toml log: add log example 2020-03-13 20:32:44 +08:00
CODE_OF_CONDUCT.md initial commit 2020-03-10 12:13:05 +08:00
CONTRIBUTING.md initial commit 2020-03-10 12:13:05 +08:00
README.md README: update info on running renode 2020-03-12 13:33:37 +08:00

README.md

Xous Core

Core files for the Xous microkernel operating system.

This repository contains everything necessary to build the Xous kernel from source. It consists of the following projects:

  • kernel: core memory manager, irq manager, and syscallhandler
  • loader: initial loader used to start the kernel
  • tools: programs used to construct a final boot image
  • docs: documentation on various aspects of Xous
  • emulation: Renode scripts used to emulate Xous
  • xous-rs: userspace library

Generating an image

You can build all Xous packages by running:

$ rustup target add riscv32imac-unknown-none-elf
$ cargo build --target riscv32imac-unknown-none-elf
$ cd kernel
$ cargo build -p kernel --target riscv32imac-unknown-none-elf
$ cd ..
$ cd loader
$ cargo build -p loader --target riscv32imac-unknown-none-elf
$ cd ..

This will compile all runtime packages for riscv32imac-unknown-none-elf. Note that the kernel and loader must currently be built separately, due to the fact that they have custom linker scripts.

These need to be packaged into a loadable binary. You can generate such a binary by running the following:

$ cargo run -p tools --bin create-image -- \
        --csv emulation/csr.csv \
        --kernel target/riscv32imac-unknown-none-elf/debug/kernel \
        --init target/riscv32imac-unknown-none-elf/debug/shell \
        target/args.bin

$