sysbuild: use 'iron' board variant for the netcore image board

When building for the "IRONside compatible" nrf54h20 'iron' board
variant on the application core, the 'iron' board variant must be used
for the radio core image as well.

Signed-off-by: Jonathan Nilsen <[email protected]>

Author: jonathannilsen

sysbuild/netcore.cmake

@@ -11,7 +11,15 @@ if(SB_CONFIG_SUPPORT_NETCORE AND NOT SB_CONFIG_NETCORE_NONE AND DEFINED SB_CONFI
   string(REPLACE "/" ";" split_board_qualifiers "${BOARD_QUALIFIERS}")
   list(GET split_board_qualifiers 1 target_soc)
   list(GET split_board_qualifiers 2 target_cpucluster)
-  set(board_target_netcore "${BOARD}/${target_soc}/${SB_CONFIG_NETCORE_REMOTE_BOARD_TARGET_CPUCLUSTER}")
+  list(LENGTH split_board_qualifiers split_board_qualifiers_length)
+  if(split_board_qualifiers_length GREATER 3)
+    list(GET split_board_qualifiers 3 target_variant_name)
+    # This board variant must be used for the network core board as well.
+    if((target_soc STREQUAL "nrf54h20") AND (target_variant_name STREQUAL "iron"))
+      set(variant_suffix "/${target_variant_name}")
+    endif()
+  endif()
+  set(board_target_netcore "${BOARD}/${target_soc}/${SB_CONFIG_NETCORE_REMOTE_BOARD_TARGET_CPUCLUSTER}${variant_suffix}")
   set(target_soc)
   set(target_cpucluster)