github/workflows: Add RISC-V 64 bits Unix port to CI.

Signed-off-by: Alessandro Gatti <a.gatti@frob.it>

.github/workflows/ports_unix.yml

@@ -235,3 +235,17 @@ jobs:
     - name: Print failures
       if: failure()
       run: tests/run-tests.py --print-failures
+
+  qemu_riscv64:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Install packages
+      run: source tools/ci.sh && ci_unix_qemu_riscv64_setup
+    - name: Build
+      run: source tools/ci.sh && ci_unix_qemu_riscv64_build
+    - name: Run main test suite
+      run: source tools/ci.sh && ci_unix_qemu_riscv64_run_tests
+    - name: Print failures
+      if: failure()
+      run: tests/run-tests.py --print-failures

tools/ci.sh

@@ -427,6 +427,11 @@ CI_UNIX_OPTS_QEMU_ARM=(
     MICROPY_STANDALONE=1
 )
 
+CI_UNIX_OPTS_QEMU_RISCV64=(
+    CROSS_COMPILE=riscv64-linux-gnu-
+    VARIANT=coverage
+)
+
 function ci_unix_build_helper {
     make ${MAKEOPTS} -C mpy-cross
     make ${MAKEOPTS} -C ports/unix "$@" submodules
@@ -692,6 +697,28 @@ function ci_unix_qemu_arm_run_tests {
     (cd tests && MICROPY_MICROPYTHON=../ports/unix/build-coverage/micropython ./run-tests.py --exclude 'vfs_posix.*\.py')
 }
 
+function ci_unix_qemu_riscv64_setup {
+    . /etc/os-release
+    for repository in "${VERSION_CODENAME}" "${VERSION_CODENAME}-updates" "${VERSION_CODENAME}-security"
+    do
+        sudo add-apt-repository -y -n "deb [arch=riscv64] http://ports.ubuntu.com/ubuntu-ports ${repository} main"
+    done
+    sudo apt-get update
+    sudo dpkg --add-architecture riscv64
+    sudo apt-get install gcc-riscv64-linux-gnu g++-riscv64-linux-gnu libffi-dev:riscv64
+    sudo apt-get install qemu-user
+    qemu-riscv64 --version
+}
+
+function ci_unix_qemu_riscv64_build {
+    ci_unix_build_helper "${CI_UNIX_OPTS_QEMU_RISCV64[@]}"
+}
+
+function ci_unix_qemu_riscv64_run_tests {
+    file ./ports/unix/build-coverage/micropython
+    (cd tests && MICROPY_MICROPYTHON=../ports/unix/build-coverage/micropython ./run-tests.py)
+}
+
 ########################################################################################
 # ports/windows