Several tweaks and experiments with Gitlab CI

- made the runner name explicit (ubuntu-22.04 instead of ubuntu-latest)
- use checkout action v3 (not v2) - silences a Github warning
- attempted to cache dependencies
- reordered the actions a bit so that the cached items are handled first
- installed all dependencies to /opt/riscv so that they can be cached more easily as a bulk

Change-Id: Icc9c31b20d6302ca378cfafb4f7b283b6e481520
Signed-off-by: Jan Matyas <jan.matyas@codasip.com>

.github/workflows/spike-openocd-tests.yml

@@ -12,49 +12,60 @@ on: pull_request
 jobs:
   test:
     name: Test debug (Ubuntu)
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
-      - name: Install Dependencies
+      - name: Cache dependencies
+        id: cache-deps
+        uses: actions/cache@v3
+        with:
+          path: /opt/riscv
+
+      - if: ${{ steps.cache-deps.outputs.cache-hit != 'true' }}
+        name: Download Toolchain
+        run: wget --progress=dot:giga https://github.com/xpack-dev-tools/riscv-none-elf-gcc-xpack/releases/download/v12.2.0-1/xpack-riscv-none-elf-gcc-12.2.0-1-linux-x64.tar.gz
+
+      - if: ${{ steps.cache-deps.outputs.cache-hit != 'true' }}
+        name: Install Toolchain
+        run: tar zxf --strip-components=1 -C /opt/riscv xpack-riscv-none-elf-gcc-12.2.0-1-linux-x64.tar.gz
+
+      - if: ${{ steps.cache-deps.outputs.cache-hit != 'true' }}
+        name: Download Spike source
+        run: |
+          git clone --recurse-submodules https://github.com/riscv-software-src/riscv-isa-sim
+          #cd riscv-isa-sim
+          #git checkout 43ea20dfbb6c815004a51106a3b2009d7f6c4940
+
+      - if: ${{ steps.cache-deps.outputs.cache-hit != 'true' }}
+        name: Install Spike build dependencies
         run: |
           sudo apt install build-essential device-tree-compiler
 
+      - if: ${{ steps.cache-deps.outputs.cache-hit != 'true' }}
+        name: Build Spike
+        run: |
+          cd riscv-isa-sim
+          mkdir build install
+          cd build
+          ../configure --prefix=/opt/riscv
+          make -j"$(nproc 2> /dev/null || sysctl -n hw.ncpu)"
+          make install
+
+      - name: Build OpenOCD
+        run: |
+          #cd riscv-openocd
+          ./bootstrap
+          ./configure --prefix=/opt/riscv
+          make -j"$(nproc 2> /dev/null || sysctl -n hw.ncpu)"
+          ls -l src/openocd
+
 #      - name: Download OpenOCD
 #        run: |
 #          git clone --recurse-submodules https://github.com/riscv/riscv-openocd.git
 #          cd riscv-openocd
 #          git checkout 43ea20dfbb6c815004a51106a3b2009d7f6c4940
 
-      - name: Build OpenOCD
-        run: |
-          #cd riscv-openocd
-          ./bootstrap
-          ./configure
-          make -j"$(nproc 2> /dev/null || sysctl -n hw.ncpu)"
-          ls -l src/openocd
-
-      - name: Download Toolchain
-        run: wget --progress=dot:giga https://github.com/xpack-dev-tools/riscv-none-elf-gcc-xpack/releases/download/v12.2.0-1/xpack-riscv-none-elf-gcc-12.2.0-1-linux-x64.tar.gz
-
-      - name: Install Toolchain
-        run: tar zxf xpack-riscv-none-elf-gcc-12.2.0-1-linux-x64.tar.gz
-
-      - name: Download spike
-        run: |
-          git clone --recurse-submodules https://github.com/riscv-software-src/riscv-isa-sim
-          #cd riscv-isa-sim
-          #git checkout 43ea20dfbb6c815004a51106a3b2009d7f6c4940
-
-      - name: Build Spike
-        run: |
-          cd riscv-isa-sim
-          mkdir build install
-          cd build
-          ../configure --prefix=`pwd`/install
-          make -j"$(nproc 2> /dev/null || sysctl -n hw.ncpu)"
-          make install
-
       - name: Download Tests
         run: |
           git clone --recurse-submodules https://github.com/riscv-software-src/riscv-tests.git
@@ -65,12 +76,12 @@ jobs:
         run: |
           cd riscv-tests/debug
           ./gdbserver.py targets/RISC-V/spike32.py --print-failures \
-              --gcc $GITHUB_WORKSPACE/xpack-riscv-none-elf-gcc-12.2.0-1/bin/riscv-none-elf-gcc \
-              --gdb $GITHUB_WORKSPACE/xpack-riscv-none-elf-gcc-12.2.0-1/bin/riscv-none-elf-gdb \
-              --sim_cmd $GITHUB_WORKSPACE/riscv-isa-sim/build/install/bin/spike \
+              --gcc /opt/riscv/bin/riscv-none-elf-gcc \
+              --gdb /opt/riscv/bin/riscv-none-elf-gdb \
+              --sim_cmd /opt/riscv/bin/spike \
               --server_cmd $GITHUB_WORKSPACE/src/openocd
           ./gdbserver.py targets/RISC-V/spike64-2.py --print-failures \
-              --gcc $GITHUB_WORKSPACE/xpack-riscv-none-elf-gcc-12.2.0-1/bin/riscv-none-elf-gcc \
-              --gdb $GITHUB_WORKSPACE/xpack-riscv-none-elf-gcc-12.2.0-1/bin/riscv-none-elf-gdb \
-              --sim_cmd $GITHUB_WORKSPACE/riscv-isa-sim/build/install/bin/spike \
+              --gcc /opt/riscv/bin/riscv-none-elf-gcc \
+              --gdb /opt/riscv/bin/riscv-none-elf-gdb \
+              --sim_cmd /opt/riscv/bin/spike \
               --server_cmd $GITHUB_WORKSPACE/src/openocd