Cosmo support

.github/workflows/build-boards.yml

@@ -192,6 +192,33 @@ jobs:
       image: ${{ matrix.image }}
       os: ${{ inputs.os }}
 
+  build-cosmo:
+    if: ${{ inputs.board-set == 'cosmo' || inputs.board-set == 'all' }}
+    name: build-cosmo
+    strategy:
+      matrix:
+        build: [cosmo-a, cosmo-a-lab, cosmo-a-dev]
+        include:
+          - build: cosmo-a
+            app_name: cosmo-a
+            app_toml: app/cosmo/rev-a.toml
+            image: default
+          - build: cosmo-a-lab
+            app_name: cosmo-a-lab
+            app_toml: app/cosmo/rev-a-lab.toml
+            image: default
+          - build: cosmo-a-dev
+            app_name: cosmo-a-dev
+            app_toml: app/cosmo/rev-a-dev.toml
+            image: default
+    uses: ./.github/workflows/build-one.yml
+    with:
+      build: ${{ matrix.build }}
+      app_name: ${{ matrix.app_name }}
+      app_toml: ${{ matrix.app_toml }}
+      image: ${{ matrix.image }}
+      os: ${{ inputs.os }}
+
   build-devboards:
     if: ${{ inputs.board-set == 'devboards' || inputs.board-set == 'all' }}
     name: build-devboards

app/cosmo/Cargo.toml

@@ -0,0 +1,31 @@
+[package]
+edition = "2021"
+readme = "README.md"
+name = "cosmo"
+version = "0.1.0"
+
+[features]
+traptrace = ["ringbuf"]
+dump = ["kern/dump"]
+
+[dependencies]
+cortex-m = { workspace = true }
+cortex-m-rt ={ workspace = true }
+cfg-if = { workspace = true }
+stm32h7 = { workspace = true, features = ["rt", "stm32h753"] }
+ringbuf = { path = "../../lib/ringbuf", optional = true }
+
+drv-stm32h7-startup = { path = "../../drv/stm32h7-startup", features = ["h753"] }
+kern = { path = "../../sys/kern" }
+
+[build-dependencies]
+build-util = {path = "../../build/util"}
+
+# this lets you use `cargo fix`!
+[[bin]]
+name = "cosmo"
+test = false
+bench = false
+
+[lints]
+workspace = true

app/cosmo/README.md

@@ -0,0 +1,8 @@
+# Cosmo Service Processor (SP) firmware
+
+The Cosmo is the SP5-based compute sled in the Oxide rack.
+
+This folder contains the firmware that runs on its service processor (SP).
+
+The Root of Trust firmware is common across multiple boards and can be found
+in the [`oxide-rot-1` subfolder](../oxide-rot-1).