ci: add GitHub Actions

.github/workflows/main.yml

@@ -0,0 +1,71 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - run: rm rust-toolchain
+    - uses: actions-rs/toolchain@v1
+      with:
+        profile: minimal
+        toolchain: nightly
+        override: true
+        components: rustfmt, clippy
+    - name: Check code format
+      run: cd kernel && cargo fmt -- --check
+
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+        arch: [x86_64, riscv32, riscv64, aarch64, mipsel]
+    steps:
+    - uses: actions/checkout@v2
+    - name: Checkout submodules
+      run: git submodule update --init --recursive
+    - uses: actions-rs/toolchain@v1
+      with:
+        profile: minimal
+        toolchain: nightly-2020-01-17
+        components: rust-src, llvm-tools-preview
+
+    - name: Cache QEMU
+      id: cache-qemu
+      if: runner.os == 'Linux'
+      uses: actions/cache@v1
+      with:
+        path: qemu-4.2.0
+        key: ${{ runner.os }}-qemu
+    - name: Install QEMU
+      if: runner.os == 'Linux' && steps.cache-qemu.outputs.cache-hit != 'true'
+      run: |
+        wget https://download.qemu.org/qemu-4.2.0.tar.xz
+        tar xJf qemu-4.2.0.tar.xz > /dev/null
+        cd qemu-4.2.0 && ./configure --target-list=${{ matrix.arch }}-softmmu && sudo make install -j && cd ..
+    - name: Install QEMU
+      if: runner.os == 'macOS'
+      run: brew install qemu
+
+    - name: Install dependencies
+      if: runner.os == 'Linux'
+      run: sudo apt install -y device-tree-compiler
+    - name: Install dependencies
+      if: runner.os == 'macOS'
+      run: brew install dtc
+
+    - name: Cache cargo bins
+      uses: actions/cache@v1
+      with:
+        path: ~/.cargo/bin
+        key: ${{ runner.os }}-cargo-bin
+    - name: Install cargo-binutils
+      run: test -x $HOME/.cargo/bin/cargo-objdump || cargo install cargo-binutils
+
+    - name: Download prebuilt user image
+      run: cd user && make sfsimg arch=${{ matrix.arch }} prebuilt=1 && cd ..
+    - name: Build kernel
+      run: cd kernel && make build arch=${{ matrix.arch }} && cd ..

.travis.yml

@@ -1,57 +0,0 @@
-sudo: false
-
-language: rust
-
-rust: nightly-2019-11-28
-
-os:
-  - linux
-  - osx
-
-dist: bionic
-
-osx_image: xcode11
-
-cache:
-  cargo: true
-  directories:
-    - $HOME/Library/Caches/Homebrew
-    - $TRAVIS_BUILD_DIR/qemu-4.1.0
-
-addons:
-  apt:
-    update: true
-    packages:
-      - device-tree-compiler
-  homebrew:
-    packages:
-      - qemu
-      - dtc
-
-env:
-  matrix:
-    - ARCH="riscv64"
-    - ARCH="riscv64" OPTS="board=u540"
-    - ARCH="riscv64" OPTS="board=k210"
-    - ARCH="riscv64" OPTS="board=rocket_chip"
-    - ARCH="riscv32"
-    - ARCH="x86_64"
-    - ARCH="x86_64" OPTS="board=pc"
-    - ARCH="aarch64"
-    - ARCH="mipsel" OPTS="board=malta"
-
-install:
-  - if [ $TRAVIS_OS_NAME = linux ]; then
-      [ ! -d qemu-4.1.0/$ARCH-softmmu ] && wget https://download.qemu.org/qemu-4.1.0.tar.xz && tar xJf qemu-4.1.0.tar.xz > /dev/null && cd qemu-4.1.0 && ./configure --target-list=$ARCH-softmmu && make && cd ..;
-      export PATH=$PATH:$PWD/qemu-4.1.0/$ARCH-softmmu:$PWD/qemu-4.1.0;
-    fi
-
-before_script:
-  - rustup component add rust-src llvm-tools-preview
-  - (test -x $HOME/.cargo/bin/cargo-objdump || cargo install cargo-binutils)
-  - (test -x $HOME/.cargo/bin/cargo-xbuild || cargo install cargo-xbuild)
-
-script:
-  - cd user && make sfsimg arch=$ARCH prebuilt=1 && cd ..
-  - cd kernel && make build arch=$ARCH $OPTS && cd ..
-  - cd kernel && make test arch=$ARCH $OPTS && cd ..

kernel/Makefile

@@ -31,7 +31,6 @@
 # . extra_features = profile | ... Add additional features
 
 arch ?= riscv64
-board ?= none
 mode ?= release
 LOG  ?=
 graphic ?= off
@@ -56,7 +55,11 @@ export USER_IMG = $(user_dir)/build/$(arch).img
 export USER_QCOW2 = $(user_dir)/build/$(arch).qcow2
 
 ifeq ($(arch), aarch64)
-board := raspi3
+board ?= raspi3
+else ifeq ($(arch), mipsel)
+board ?= malta
+else
+board ?= none
 endif
 
 # currently only mipsel architecture and rocket-chip need DTB linked to the kernel