bootloader: debug_keys.cmake: Resolve paths if not absolute

Resolve from ${CMAKE_SOURCE_DIR}, the directory containing the
app's CMakeLists.txt.

Signed-off-by: Øyvind Rønningstad <[email protected]>

Author: oyvindronningstad

subsys/bootloader/cmake/debug_keys.cmake

@@ -53,10 +53,17 @@ if( "${CONFIG_SB_SIGNING_KEY_FILE}" STREQUAL "")
     )
   set(SIGN_KEY_FILE_DEPENDS debug_sign_key_target)
 else()
-  if (NOT EXISTS "${CONFIG_SB_SIGNING_KEY_FILE}")
-    message(FATAL_ERROR "Config points to non-existing PEM file '${CONFIG_SB_SIGNING_KEY_FILE}'")
+  # Resolve path.
+  if(IS_ABSOLUTE ${CONFIG_SB_SIGNING_KEY_FILE})
+    set(SIGNATURE_PRIVATE_KEY_FILE ${CONFIG_SB_SIGNING_KEY_FILE})
+  else()
+    set(SIGNATURE_PRIVATE_KEY_FILE
+      ${CMAKE_SOURCE_DIR}/${CONFIG_SB_SIGNING_KEY_FILE})
+  endif()
+
+  if (NOT EXISTS ${SIGNATURE_PRIVATE_KEY_FILE})
+    message(FATAL_ERROR "Config points to non-existing PEM file '${SIGNATURE_PRIVATE_KEY_FILE}'")
   endif()
-  set(SIGNATURE_PRIVATE_KEY_FILE ${CONFIG_SB_SIGNING_KEY_FILE})
 endif()
 
 if ("${CONFIG_SB_PUBLIC_KEY_FILES}" STREQUAL "")
@@ -100,5 +107,14 @@ if ("${CONFIG_SB_PUBLIC_KEY_FILES}" STREQUAL "")
     )
   set(PROVISION_KEY_DEPENDS provision_key_target)
 else ()
-  set (PUBLIC_KEY_FILES ${CONFIG_SB_PUBLIC_KEY_FILES})
+  string(REPLACE "," ";" PUBLIC_KEY_FILES_LIST ${CONFIG_SB_PUBLIC_KEY_FILES})
+  foreach(key ${PUBLIC_KEY_FILES_LIST})
+    # Resolve path.
+    if(IS_ABSOLUTE ${key})
+      list(APPEND PUBLIC_KEY_FILES ${key})
+    else()
+      list(APPEND PUBLIC_KEY_FILES ${CMAKE_SOURCE_DIR}/${key})
+    endif()
+  endforeach()
+  string(REPLACE ";" "," PUBLIC_KEY_FILES "${PUBLIC_KEY_FILES}")
 endif()