Initial commit of RITM

Signed-off-by: Mateusz Maćkowski <mmac@google.com>
Signed-off-by: Matthias Maennich <maennich@google.com>

Author: m4tx

.cargo/config.toml

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+[build]
+target = "aarch64-unknown-none"

.github/dependabot.yml

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+version: 2
+updates:
+  - package-ecosystem: "cargo"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/rust.yml

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+name: Rust
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+      - name: Install aarch64 toolchain
+        uses: dtolnay/rust-toolchain@v1
+        with:
+          toolchain: stable
+          targets: aarch64-unknown-none
+      - name: Build for QEMU
+        run: make build.qemu
+      - name: Run clippy
+        run: make clippy
+
+  format:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+      - name: Format Rust code
+        run: cargo fmt --all -- --check

.gitignore

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+/target

CONTRIBUTING.md

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+# How to contribute
+
+We'd love to accept your patches and contributions to this project.
+
+## Before you begin
+
+### Sign our Contributor License Agreement
+
+Contributions to this project must be accompanied by a
+[Contributor License Agreement](https://cla.developers.google.com/about) (CLA).
+You (or your employer) retain the copyright to your contribution; this simply
+gives us permission to use and redistribute your contributions as part of the
+project.
+
+If you or your current employer have already signed the Google CLA (even if it
+was for a different project), you probably don't need to do it again.
+
+Visit <https://cla.developers.google.com/> to see your current agreements or to
+sign a new one.
+
+### Review our community guidelines
+
+This project follows
+[Google's Open Source Community Guidelines](https://opensource.google/conduct/).
+
+## Contribution process
+
+### Code reviews
+
+All submissions, including submissions by project members, require review. We
+use GitHub pull requests for this purpose. Consult
+[GitHub Help](https://help.github.com/articles/about-pull-requests/) for more
+information on using pull requests.

Cargo.lock

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+[package]
+name = "ritm"
+version = "0.1.0"
+edition = "2024"
+license = "MIT OR Apache-2.0"
+description = "An example of combining various libraries for aarch64 OS development."
+authors = ["Mateusz Maćkowski <mmac@google.com>"]
+repository = "https://github.com/google/ritm"
+keywords = ["arm", "aarch64", "cortex-a", "osdev"]
+categories = ["embedded", "no-std"]
+
+[dependencies]
+aarch64-paging = { version = "0.10", default-features = false }
+aarch64-rt = { version = "0.2", features = ["el2", "exceptions", "initial-pagetable", "psci"], default-features = false }
+arm-pl011-uart = "0.3"
+buddy_system_allocator = { version = "0.11", default-features = false, features = ["alloc", "use_spin"] }
+smccc = "0.2"