tools/ci.sh, .github/workflows: Bring QEMU-RISCV target under CI.

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

.github/workflows/ports_qemu-riscv.yml

@@ -0,0 +1,33 @@
+name: qemu-riscv port
+
+on:
+  push:
+  pull_request:
+    paths:
+      - '.github/workflows/*.yml'
+      - 'tools/**'
+      - 'py/**'
+      - 'extmod/**'
+      - 'shared/**'
+      - 'lib/**'
+      - 'drivers/**'
+      - 'ports/qemu-arm/main.c'
+      - 'ports/qemu-riscv/**'
+      - 'tests/**'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build_and_test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Install packages
+      run: source tools/ci.sh && ci_qemu_riscv_setup
+    - name: Build and run test suite
+      run: source tools/ci.sh && ci_qemu_riscv_build
+    - name: Print failures
+      if: failure()
+      run: grep --before-context=100 --text "FAIL" ports/qemu-riscv/build/console.out

tools/ci.sh

@@ -17,6 +17,11 @@ function ci_gcc_arm_setup {
     arm-none-eabi-gcc --version
 }
 
+function ci_gcc_riscv_setup {
+    sudo apt-get install gcc-riscv64-unknown-elf picolibc-riscv64-unknown-elf
+    riscv64-unknown-elf-gcc --version
+}
+
 ########################################################################################
 # c code formatting
 
@@ -259,6 +264,25 @@ function ci_qemu_arm_build {
     make ${MAKEOPTS} -C ports/qemu-arm -f Makefile.test BOARD=sabrelite test
 }
 
+########################################################################################
+# ports/qemu-riscv
+
+function ci_qemu_riscv_setup {
+    ci_gcc_riscv_setup
+    sudo apt-get update
+    sudo apt-get install qemu-system
+    qemu-system-riscv32 --version
+}
+
+function ci_qemu_riscv_build {
+    make ${MAKEOPTS} -C mpy-cross
+    make ${MAKEOPTS} -C ports/qemu-riscv submodules
+    make ${MAKEOPTS} -C ports/qemu-riscv
+    make ${MAKEOPTS} -C ports/qemu-riscv clean
+    make ${MAKEOPTS} -C ports/qemu-riscv -f Makefile.test submodules
+    make ${MAKEOPTS} -C ports/qemu-riscv -f Makefile.test test
+}
+
 ########################################################################################
 # ports/renesas-ra