kernel: banner: Allow for customising version

This allows for further (out of tree) customisation of the boot
banner version string when devices boot.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
Signed-off-by: Jamie McCrae <jamie.mccrae@nordicsemi.no>

CMakeLists.txt

@@ -557,6 +557,7 @@ add_custom_command(
     -DOUT_FILE=${PROJECT_BINARY_DIR}/include/generated/version.h
     -DVERSION_TYPE=KERNEL
     -DVERSION_FILE=${ZEPHYR_BASE}/VERSION
+    -DKERNEL_VERSION_CUSTOMIZATION="${KERNEL_VERSION_CUSTOMIZATION}"
     ${build_version_argument}
     -P ${ZEPHYR_BASE}/cmake/gen_version_h.cmake
   DEPENDS ${ZEPHYR_BASE}/VERSION ${git_dependency}
@@ -570,6 +571,7 @@ if(EXISTS ${APPLICATION_SOURCE_DIR}/VERSION)
       -DOUT_FILE=${PROJECT_BINARY_DIR}/include/generated/app_version.h
       -DVERSION_TYPE=APP
       -DVERSION_FILE=${APPLICATION_SOURCE_DIR}/VERSION
+      -DAPP_VERSION_CUSTOMIZATION="${APP_VERSION_CUSTOMIZATION}"
       ${build_version_argument}
       -P ${ZEPHYR_BASE}/cmake/gen_version_h.cmake
     DEPENDS ${APPLICATION_SOURCE_DIR}/VERSION ${git_dependency}

kernel/banner.c

@@ -16,11 +16,13 @@
 #define BANNER_POSTFIX ""
 #endif
 
+#ifndef BANNER_VERSION
 #ifdef BUILD_VERSION
 #define BANNER_VERSION STRINGIFY(BUILD_VERSION)
 #else
 #define BANNER_VERSION KERNEL_VERSION_STRING
 #endif
+#endif
 
 void boot_banner(void)
 {

version.h.in

@@ -17,5 +17,6 @@
 #define @VERSION_TYPE@_VERSION_STRING  "@@VERSION_TYPE@_VERSION_STRING@"
 
 #define @BUILD_VERSION_NAME@ @@BUILD_VERSION_NAME@@
+@@VERSION_TYPE@_VERSION_CUSTOMIZATION@
 
 #endif /* _@VERSION_TYPE@_VERSION_H_ */