Added cache key. Fixed spike rev.

Change-Id: Ia2715f78dbb3be1bdf0b5ac0936f6320eaa98b73
Signed-off-by: Jan Matyas <jan.matyas@codasip.com>

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

@@ -2,6 +2,9 @@
 
 name: Test OpenOCD against 2 spike configurations
 
+env:
+  SPIKE_REV: 0d1a48c0c0e97521c0081b130e97b1352f27380a
+
 on: pull_request
 
 # There is some commented out code below that would be useful in adding this
@@ -21,6 +24,7 @@ jobs:
         uses: actions/cache@v3
         with:
           path: /opt/riscv
+          key: "spike-$SPIKE_REV"
 
       - if: ${{ steps.cache-deps.outputs.cache-hit != 'true' }}
         name: Download Toolchain
@@ -30,22 +34,22 @@ jobs:
         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: Download Spike source
+        run: |
+          git clone  https://github.com/riscv-software-src/riscv-isa-sim
+          cd riscv-isa-sim
+          git checkout $SPIKE_REV
+          git submodule update --init --recursive
+
       - 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