sysbuild: partition manager provide image file information

Partition manager CMake code defines runner image file as sysbuild
cache variable.

This ensures the image file is propagated to the Zephyr image build
system where the nRF Connect SDK CMake code will specify the image
file on the runner's yaml properties.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>

CMakeLists.txt

@@ -14,6 +14,16 @@ set(CONF_FILE_BUILD_TYPE ${CONF_FILE_BUILD_TYPE} CACHE INTERNAL "The build type"
 # Customize the Zephyr kernel version.h using nRF Connect SDK ncs_version.h.
 set(KERNEL_VERSION_CUSTOMIZATION \#include;<ncs_version.h> PARENT_SCOPE)
 
+foreach(runner_ext BIN HEX ELF)
+  zephyr_get(NCS_RUNNER_${runner_ext} SYSBUILD)
+  if(DEFINED NCS_RUNNER_${runner_ext})
+    string(TOLOWER "${runner_ext}" type)
+    set_target_properties(runners_yaml_props_target PROPERTIES
+                          "${type}_file" "${NCS_RUNNER_${runner_ext}}"
+    )
+  endif()
+endforeach()
+
 include(cmake/extensions.cmake)
 include(cmake/version.cmake)
 include(cmake/multi_image.cmake)

cmake/sysbuild/partition_manager.cmake

@@ -299,21 +299,34 @@ function(update_runner)
 
   set(runners_content_update)
   file(STRINGS ${runners_file} runners_content)
-  foreach(line ${runners_content})
-    if(DEFINED RUNNER_ELF AND ${line} MATCHES "^.*elf_file: .*$")
+  foreach(line IN LISTS runners_content)
+    if(DEFINED RUNNER_ELF AND "${line}" MATCHES "^.*elf_file: .*$")
       string(REGEX REPLACE "(.*elf_file:) .*" "\\1 ${RUNNER_ELF}" line ${line})
+      set(${RUNNER_IMAGE}_NCS_RUNNER_ELF "${RUNNER_ELF}" CACHE INTERNAL
+          "nRF Connect SDK partition managere controlled elf file"
+      )
     endif()
 
-    if(DEFINED RUNNER_HEX AND ${line} MATCHES "^.*hex_file: .*$")
+    if(DEFINED RUNNER_HEX AND "${line}" MATCHES "^.*hex_file: .*$")
       string(REGEX REPLACE "(.*hex_file:) .*" "\\1 ${RUNNER_HEX}" line ${line})
+      set(${RUNNER_IMAGE}_NCS_RUNNER_HEX "${RUNNER_HEX}" CACHE INTERNAL
+          "nRF Connect SDK partition managere controlled hex file"
+      )
     endif()
 
-    if(DEFINED RUNNER_BIN AND ${line} MATCHES "^.*bin_file: .*$")
+    if(DEFINED RUNNER_BIN AND "${line}" MATCHES "^.*bin_file: .*$")
       string(REGEX REPLACE "(.*bin_file:) .*" "\\1 ${RUNNER_BIN}" line ${line})
+      set(${RUNNER_IMAGE}_NCS_RUNNER_BIN "${RUNNER_BIN}" CACHE INTERNAL
+          "nRF Connect SDK partition managere controlled bin file"
+      )
     endif()
     list(APPEND runners_content_update "${line}\n")
   endforeach()
   file(WRITE ${runners_file} ${runners_content_update})
+
+  # NCS has updated the cache with an NCS_RUNNER file, thus re-create the sysbuild cache.
+  # No need for CMAKE_RERUN in this case, as runners.yaml has been updated above.
+  sysbuild_cache(CREATE APPLICATION ${RUNNER_IMAGE})
 endfunction()