Added basic cppcheck static analisys

.github/workflows/test-cppcheck.yml

@@ -0,0 +1,23 @@
+name: Cppcheck static analysis
+
+on:
+  push:
+    branches: [ 'master', 'main', 'release/**' ]
+  pull_request:
+    branches: [ '*' ]
+
+jobs:
+  cppcheck:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: false
+
+      - name: install cppcheck
+        run: sudo apt-get install --no-install-recommends -y -q cppcheck
+
+      - name: Run cppcheck static analysis
+        run: |
+          make cppcheck

Makefile

@@ -328,6 +328,9 @@ line-count-nrf52:
 line-count-x86:
 	cloc --force-lang-def cloc_lang_def.txt src/boot_x86_fsp.c src/boot_x86_fsp_payload.c src/boot_x86_fsp_start.S src/image.c src/keystore.c src/libwolfboot.c src/loader.c src/string.c src/update_disk.c src/x86/ahci.c src/x86/ata.c src/x86/common.c src/x86/gpt.c src/x86/hob.c src/pci.c src/x86/tgl_fsp.c hal/x86_fsp_tgl.c hal/x86_uart.c
 
+cppcheck:
+	cppcheck -f --suppress="ctunullpointer" --suppress="nullPointer" --suppress="objectIndex" --suppress="comparePointers" --std=c89 src/*.c hal/*.c hal/spi/*.c hal/uart/*.c
+
 %.o:%.c
 	@echo "\t[CC-$(ARCH)] $@"
 	$(Q)$(CC) $(CFLAGS) -c $(OUTPUT_FLAG) $@ $^