feat: add loongarch64 support

.github/workflows/actions/setup-musl/action.yml

@@ -16,22 +16,45 @@ runs:
       path: ${{ inputs.arch }}-linux-musl-cross
       key: ${{ inputs.arch }}-linux-musl-cross
   - name: Download musl toolchain
-    if: steps.cache-musl.outputs.cache-hit != 'true'
+    if: ${{ steps.cache-musl.outputs.cache-hit != 'true' && inputs.arch != 'loongarch64' }}
     shell: bash
     run: |
       MUSL_PATH=${{ inputs.arch }}-linux-musl-cross
       wget https://musl.cc/${MUSL_PATH}.tgz
       tar -xf ${MUSL_PATH}.tgz
+  - name: Download musl toolchain
+    if: ${{ steps.cache-musl.outputs.cache-hit != 'true' && inputs.arch == 'loongarch64' }}
+    shell: bash
+    run: |
+      TOOLCHAIN_REPO=https://github.com/LoongsonLab/oscomp-toolchains-for-oskernel
+      wget ${TOOLCHAIN_REPO}/releases/download/gcc-13.2.0-loongarch64/gcc-13.2.0-loongarch64-linux-gnu.tgz
+      wget ${TOOLCHAIN_REPO}/raw/refs/heads/main/musl-loongarch64-1.2.2.tgz
+      tar -xf gcc-13.2.0-loongarch64-linux-gnu.tgz
+      tar -xf musl-loongarch64-1.2.2.tgz
   - uses: actions/cache/save@v4
-    if: steps.cache-musl.outputs.cache-hit != 'true'
+    if: ${{ steps.cache-musl.outputs.cache-hit != 'true' && inputs.arch != 'loongarch64' }}
     with:
       path: ${{ inputs.arch }}-linux-musl-cross
       key: ${{ inputs.arch }}-linux-musl-cross
+  - uses: actions/cache/save@v4
+    if: ${{ steps.cache-musl.outputs.cache-hit != 'true' && inputs.arch == 'loongarch64' }}
+    with:
+      path: |
+        gcc-13.2.0-loongarch64-linux-gnu
+        musl-loongarch64-1.2.2
+      key: ${{ inputs.arch }}-linux-musl-cross
 
   - name: Add to PATH environment variable
+    if: inputs.arch != 'loongarch64'
     shell: bash
     run: |
       echo "$PWD/${{ inputs.arch }}-linux-musl-cross/bin" >> $GITHUB_PATH
+  - name: Add to PATH environment variable
+    if: inputs.arch == 'loongarch64'
+    shell: bash
+    run: |
+      echo "$PWD/gcc-13.2.0-loongarch64-linux-gnu/bin" >> $GITHUB_PATH
+      echo "$PWD/musl-loongarch64-1.2.2/bin" >> $GITHUB_PATH
   - name: Verify installation
     shell: bash
     run: |

.github/workflows/actions/setup-qemu/action.yml

@@ -25,7 +25,7 @@ runs:
       sudo apt-get update && sudo apt-get install -y ninja-build libslirp-dev libglib2.0-dev
       wget https://download.qemu.org/$QEMU_PATH.tar.xz && tar -xJf $QEMU_PATH.tar.xz
       cd $QEMU_PATH \
-        && ./configure --prefix=$PREFIX --target-list=x86_64-softmmu,riscv64-softmmu,aarch64-softmmu --enable-slirp \
+        && ./configure --prefix=$PREFIX --target-list=x86_64-softmmu,riscv64-softmmu,aarch64-softmmu,loongarch64-softmmu --enable-slirp \
         && make -j > /dev/null 2>&1 \
         && make install
   - uses: actions/cache/save@v4
@@ -44,3 +44,4 @@ runs:
       qemu-system-x86_64 --version
       qemu-system-aarch64 --version
       qemu-system-riscv64 --version
+      qemu-system-loongarch64 --version

.github/workflows/build.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        arch: [x86_64, riscv64, aarch64]
+        arch: [x86_64, riscv64, aarch64, loongarch64]
         rust-toolchain: [nightly, nightly-2024-12-25]
     env:
       RUSTUP_TOOLCHAIN: ${{ matrix.rust-toolchain }}
@@ -18,7 +18,7 @@ jobs:
       with:
         toolchain: ${{ matrix.rust-toolchain }}
         components: rust-src, clippy, rustfmt
-        targets: x86_64-unknown-none, riscv64gc-unknown-none-elf, aarch64-unknown-none, aarch64-unknown-none-softfloat
+        targets: x86_64-unknown-none, riscv64gc-unknown-none-elf, aarch64-unknown-none, aarch64-unknown-none-softfloat, loongarch64-unknown-none
     - uses: Swatinem/rust-cache@v2
     - name: Check rust version
       run: rustc --version --verbose
@@ -40,7 +40,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        arch: [x86_64, riscv64, aarch64]
+        arch: [x86_64, riscv64, aarch64, loongarch64]
         rust-toolchain: [nightly, nightly-2024-12-25]
     env:
       RUSTUP_TOOLCHAIN: ${{ matrix.rust-toolchain }}
@@ -50,7 +50,7 @@ jobs:
       with:
         toolchain: ${{ matrix.rust-toolchain }}
         components: rust-src, llvm-tools
-        targets: x86_64-unknown-none, riscv64gc-unknown-none-elf, aarch64-unknown-none, aarch64-unknown-none-softfloat
+        targets: x86_64-unknown-none, riscv64gc-unknown-none-elf, aarch64-unknown-none, aarch64-unknown-none-softfloat, loongarch64-unknown-none
     - uses: Swatinem/rust-cache@v2
     - run: cargo install cargo-binutils
     - name: Build helloworld
@@ -92,7 +92,7 @@ jobs:
       with:
         toolchain: ${{ matrix.rust-toolchain }}
         components: rust-src, llvm-tools
-        targets: x86_64-unknown-none, riscv64gc-unknown-none-elf, aarch64-unknown-none, aarch64-unknown-none-softfloat
+        targets: x86_64-unknown-none, riscv64gc-unknown-none-elf, aarch64-unknown-none, aarch64-unknown-none-softfloat, loongarch64-unknown-none
     - uses: Swatinem/rust-cache@v2
     - run: cargo install cargo-binutils
     - name: Build helloworld for x86_64-pc-oslab

.github/workflows/test.yml

@@ -3,7 +3,7 @@ name: Test CI
 on: [push, pull_request]
 
 env:
-  qemu-version: 8.2.0
+  qemu-version: 9.2.1
   rust-toolchain: nightly-2024-12-25
   arceos-apps: '855106c'
 
@@ -26,7 +26,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        arch: [x86_64, riscv64, aarch64]
+        arch: [x86_64, riscv64, aarch64, loongarch64]
     steps:
     - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@stable

Dockerfile

@@ -1,7 +1,12 @@
 FROM rust:slim
 
+RUN echo /etc/apt/sources.list << deb http://apt.llvm.org/bookworm/ llvm-toolchain-bookworm main
+RUN wget -qO- https://apt.llvm.org/llvm-snapshot.gpg.key | tee /etc/apt/trusted.gpg.d/apt.llvm.org.asc
+
 RUN apt-get update \
-    && apt-get install -y --no-install-recommends libclang-dev qemu-system wget make \
+    && apt-get install -y --no-install-recommends libclang-19-dev wget make python3 \
+        xz-utils python3-venv ninja-build bzip2 meson \
+        pkg-config libglib2.0-dev git libslirp-dev \
     && rm -rf /var/lib/apt/lists/*
 
 RUN cargo install cargo-binutils axconfig-gen
@@ -13,9 +18,24 @@ RUN rustc --version
 RUN wget https://musl.cc/aarch64-linux-musl-cross.tgz \
     && wget https://musl.cc/riscv64-linux-musl-cross.tgz \
     && wget https://musl.cc/x86_64-linux-musl-cross.tgz \
+    && wget https://github.com/LoongsonLab/oscomp-toolchains-for-oskernel/releases/download/gcc-13.2.0-loongarch64/gcc-13.2.0-loongarch64-linux-gnu.tgz \
+    && wget https://github.com/LoongsonLab/oscomp-toolchains-for-oskernel/raw/refs/heads/main/musl-loongarch64-1.2.2.tgz \
     && tar zxf aarch64-linux-musl-cross.tgz \
     && tar zxf riscv64-linux-musl-cross.tgz \
     && tar zxf x86_64-linux-musl-cross.tgz \
+    && tar zxf gcc-13.2.0-loongarch64-linux-gnu.tgz \
+    && tar zxf musl-loongarch64-1.2.2.tgz && cd musl-loongarch64-1.2.2 && ./setup && cd .. \
     && rm -f *.tgz
 
+RUN wget https://download.qemu.org/qemu-9.2.1.tar.xz \
+    && tar xf qemu-9.2.1.tar.xz \
+    && cd qemu-9.2.1 \
+    && ./configure --prefix=/qemu-bin-9.2.1 \
+        --target-list=loongarch64-softmmu,riscv64-softmmu,aarch64-softmmu,x86_64-softmmu \
+        --enable-gcov --enable-debug --enable-slirp \
+    && make -j$(nproc) \
+    && make install
+RUN rm -rf qemu-9.2.1 qemu-9.2.1.tar.xz
+
 ENV PATH="/x86_64-linux-musl-cross/bin:/aarch64-linux-musl-cross/bin:/riscv64-linux-musl-cross/bin:$PATH"
+ENV PATH="/gcc-13.2.0-loongarch64-linux-gnu/bin:/musl-loongarch64-1.2.2/bin:/qemu-bin-9.2.1/bin:$PATH"

Makefile

@@ -93,8 +93,10 @@ else ifeq ($(ARCH), aarch64)
   endif
 else ifeq ($(ARCH), riscv64)
   TARGET := riscv64gc-unknown-none-elf
+else ifeq ($(ARCH), loongarch64)
+  TARGET := loongarch64-unknown-none
 else
-  $(error "ARCH" must be one of "x86_64", "riscv64", or "aarch64")
+  $(error "ARCH" must be one of "x86_64", "riscv64", "aarch64" or "loongarch64")
 endif
 
 export AX_ARCH=$(ARCH)

README.md

@@ -12,8 +12,8 @@ ArceOS was inspired a lot by [Unikraft](https://github.com/unikraft/unikraft).
 
 ## Features & TODOs
 
-* [x] Architecture: x86_64, riscv64, aarch64
-* [x] Platform: QEMU pc-q35 (x86_64), virt (riscv64/aarch64)
+* [x] Architecture: x86_64, riscv64, aarch64, loongarch64
+* [x] Platform: QEMU pc-q35 (x86_64), virt (riscv64/aarch64/loongarch64)
 * [x] Multi-thread
 * [x] FIFO/RR/CFS scheduler
 * [x] VirtIO net/blk/gpu drivers
@@ -78,12 +78,16 @@ Download & install [musl](https://musl.cc) toolchains:
 wget https://musl.cc/aarch64-linux-musl-cross.tgz
 wget https://musl.cc/riscv64-linux-musl-cross.tgz
 wget https://musl.cc/x86_64-linux-musl-cross.tgz
+wget https://github.com/LoongsonLab/oscomp-toolchains-for-oskernel/releases/download/gcc-13.2.0-loongarch64/gcc-13.2.0-loongarch64-linux-gnu.tgz
+wget https://github.com/LoongsonLab/oscomp-toolchains-for-oskernel/raw/refs/heads/main/musl-loongarch64-1.2.2.tgz
 # install
 tar zxf aarch64-linux-musl-cross.tgz
 tar zxf riscv64-linux-musl-cross.tgz
 tar zxf x86_64-linux-musl-cross.tgz
+tar zxf gcc-13.2.0-loongarch64-linux-gnu.tgz
+tar zxf musl-loongarch64-1.2.2.tgz && cd musl-loongarch64-1.2.2 && ./setup && cd ..
 # exec below command in bash OR add below info in ~/.bashrc
-export PATH=`pwd`/x86_64-linux-musl-cross/bin:`pwd`/aarch64-linux-musl-cross/bin:`pwd`/riscv64-linux-musl-cross/bin:$PATH
+export PATH=`pwd`/x86_64-linux-musl-cross/bin:`pwd`/aarch64-linux-musl-cross/bin:`pwd`/riscv64-linux-musl-cross/bin:`pwd`/gcc-13.2.0-loongarch64-linux-gnu/bin:`pwd`/musl-loongarch64-1.2.2/bin:$PATH
 ```
 
 Other systems and arch please refer to [Qemu Download](https://www.qemu.org/download/#linux)
@@ -97,7 +101,7 @@ make A=path/to/app ARCH=<arch> LOG=<log>
 
 Where `path/to/app` is the relative path to the application. Examples applications can be found in the [examples](examples/) directory or the [arceos-apps](https://github.com/arceos-org/arceos-apps) repository.
 
-`<arch>` should be one of `riscv64`, `aarch64`, `x86_64`.
+`<arch>` should be one of `riscv64`, `aarch64`, `x86_64`, `loongarch64`.
 
 `<log>` should be one of `off`, `error`, `warn`, `info`, `debug`, `trace`.
 

configs/platforms/loongarch64-qemu-virt.toml

@@ -0,0 +1,78 @@
+
+# Architecture identifier.
+arch = "loongarch64"
+# Platform identifier.
+platform = "loongarch64-qemu-virt"
+
+#
+# Platform configs
+#
+[plat]
+# Platform family.
+family = "loongarch64-qemu-virt"
+
+# Base address of the whole physical memory.
+phys-memory-base = 0x8000_0000        # uint
+# Size of the whole physical memory. (128M)
+phys-memory-size = 0x800_0000         # uint
+# Base physical address of the kernel image.
+kernel-base-paddr = 0x8000_0000       # uint
+
+# Base virtual address of the kernel image.
+kernel-base-vaddr = "0xffff_0000_8000_0000"     # uint
+# Linear mapping offset, for quick conversions between physical and virtual
+# addresses.
+phys-virt-offset = "0xffff_0000_0000_0000"      # uint
+# Offset of bus address and phys address. some boards, the bus address is
+# different from the physical address.
+phys-bus-offset = 0                             # uint
+# Kernel address space base.
+kernel-aspace-base = "0xffff_0000_0000_0000"    # uint
+# Kernel address space size.
+kernel-aspace-size = "0x0000_ffff_ffff_f000"    # uint
+
+#
+# Device specifications
+#
+[devices]
+# MMIO regions with format (`base_paddr`, `size`).
+mmio-regions = [
+    [0x100E_0000, 0x0000_1000],         # GED
+    [0x1FE0_0000, 0x0000_1000],         # UART
+    [0x2000_0000, 0x1000_0000],         # PCI
+    [0x4000_0000, 0x0002_0000],         # PCI RANGES
+]           # [(uint, uint)]
+# VirtIO MMIO regions with format (`base_paddr`, `size`).
+virtio-mmio-regions = []    # [(uint, uint)]
+# Base physical address of the PCIe ECAM space.
+pci-ecam-base = 0x2000_0000             # uint
+# End PCI bus number.
+pci-bus-end = 0                         # uint
+# PCI device memory ranges.
+pci-ranges = [
+    [0, 0],
+    [0x4000_0000, 0x0002_0000]
+]                                       # [(uint, uint)]
+# poweroff {
+#     value = <0x00000034>;
+#     offset = <0x00000000>;
+#     compatible = "syscon-poweroff";
+# };
+# ged@100e001c {
+#     reg-io-width = <0x00000001>;
+#     reg-shift = <0x00000000>;
+#     reg = <0x00000000 0x100e001c 0x00000000 0x00000003>;
+#     compatible = "syscon";
+# };
+ged-paddr  = 0x100E001C                 # uint
+# serial@1fe001e0 {
+#     interrupt-parent = <0x00008003>;
+#     interrupts = <0x00000002 0x00000004>;
+#     clock-frequency = <0x05f5e100>;
+#     reg = <0x00000000 0x1fe001e0 0x00000000 0x00000100>;
+#     compatible = "ns16550a";
+# };
+uart-paddr = 0x1FE001E0                 # uint
+
+# Timer interrupt frequency in Hz.
+timer-frequency = 100_000_000           # uint

modules/axhal/Cargo.toml

@@ -59,5 +59,9 @@ arm_pl011 = "0.1"
 arm_pl031 = { version = "0.2", optional = true }
 dw_apb_uart = "0.1"
 
+[target.'cfg(target_arch = "loongarch64")'.dependencies]
+loongArch64 = "0.2.4"
+ns16550a = "0.4.0"
+
 [build-dependencies]
 axconfig = { workspace = true }

modules/axhal/build.rs

@@ -5,6 +5,7 @@ const BUILTIN_PLATFORMS: &[&str] = &[
     "aarch64-bsta1000b",
     "aarch64-qemu-virt",
     "aarch64-raspi4",
+    "loongarch64-qemu-virt",
     "riscv64-qemu-virt",
     "x86_64-pc-oslab",
     "x86_64-qemu-q35",
@@ -15,6 +16,7 @@ const BUILTIN_PLATFORM_FAMILIES: &[&str] = &[
     "aarch64-phytium-pi",
     "aarch64-qemu-virt",
     "aarch64-raspi",
+    "loongarch64-qemu-virt",
     "riscv64-qemu-virt",
     "x86-pc",
 ];

modules/axhal/linker.lds.S

@@ -68,7 +68,7 @@ SECTIONS
     . = ALIGN(4K);
     _edata = .;
 
-    .bss : ALIGN(4K) {
+    .bss : AT(.) ALIGN(4K) {
         boot_stack = .;
         *(.bss.stack)
         . = ALIGN(4K);