Update dependabot to also update GH-A workflows

.github/CI_README.md

@@ -95,18 +95,11 @@ This stores all collateral for the tests (srcs, generated-srcs, sim binary, etc)
 Other CI Setup
 --------------
 
-To get the CI to work correctly you need to create the following GH Repository Secrets
-
-| Secret | Value |
-| -------| ------------- |
-| BUILDDIR | the directory to use on the build server |
-
-Additionally, you need to install conda on the build servers that exist.
+You need to install conda on the build servers that exist.
 
 Notes on CIRCLE CI
 ------------------
 This code is heavily based on the origin [CircleCI]() work. There a quite a few differences
-- CCI supports workflow level variables, in GA we must define things like `BUILDSERVER: ${{ secrets.BUILDSERVER }}` in every job
 - CCI allows a much larger cache. The entire CY directory with toolchains and RTL could be cached, with GA there is a 5Gb total cache limit
 - GA support more parallel jobs 20 vs 4
 - GA seems to allow much longer run times

.github/dependabot.yml

@@ -8,6 +8,9 @@ updates:
     schedule:
       interval: "daily"
     directory: /
+    labels:
+      - "dependencies"
+      - "changelog:omit"
     # ignore certain submodules
     ignore:
       - dependency-name: "generators/gemmini"
@@ -16,3 +19,11 @@ updates:
       - dependency-name: "generators/rocket-chip-inclusive-cache"
       - dependency-name: "toolchains/riscv-tools/riscv-tests"
       - dependency-name: "toolchains/riscv-tools/riscv-tools-feedstock"
+  # submit a PR for bumping GH-A dependencies
+  - package-ecosystem: github-actions
+    schedule:
+      interval: "daily"
+    directory: /
+    labels:
+      - "dependencies"
+      - "changelog:omit"

.github/scripts/defaults.sh

@@ -6,9 +6,6 @@ CI_MAKE_NPROC=8
 REMOTE_MAKE_NPROC=4
 
 # remote variables
-# CI_DIR is defined externally based on the GH repository secret BUILDDIR
-
-REMOTE_PREFIX=$CI_DIR/${GITHUB_REPOSITORY#*/}-${GITHUB_REF_NAME//\//-}
 REMOTE_WORK_DIR=$GITHUB_WORKSPACE
 REMOTE_CHIPYARD_DIR=$GITHUB_WORKSPACE
 REMOTE_SIM_DIR=$REMOTE_CHIPYARD_DIR/sims/verilator

.github/workflows/chipyard-full-flow.yml

@@ -15,7 +15,7 @@ defaults:
     shell: bash -leo pipefail {0}
 
 env:
-  REMOTE_WORK_DIR: ${{ secrets.BUILDDIR }}/cy-ci-shared/cy-${{ github.sha }}
+  REMOTE_WORK_DIR: /tmp/cy-ci-shared/cy-${{ github.sha }}
   JAVA_TMP_DIR: /tmp/cy-${{ github.sha }}-full
 
 jobs:

.github/workflows/chipyard-run-tests.yml

@@ -13,11 +13,9 @@ defaults:
 
 env:
   tools-cache-version: v17
-  CI_DIR: ${{ secrets.BUILDDIR }}
   JVM_OPTS: -Xmx3200m # Customize the JVM maximum heap limit
   conda-env-name-no-time: cy-${{ github.run_id }}
   workflow-timestamp: ${{ github.event.pull_request.updated_at }}
-  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
 jobs:
   cancel-prior-workflows: