Merge branch 'feat/move_bootloader_part_table_flash_deps' into 'master'

refactor(build-system): Simplify flash target creation

See merge request espressif/esp-idf!41777

Author: sudeep-mohanty

components/bootloader/CMakeLists.txt

@@ -32,4 +32,7 @@ if(NOT CONFIG_SECURE_BOOT OR CONFIG_SECURE_BOOT_FLASH_BOOTLOADER_DEFAULT)
     esptool_py_flash_target_image(flash bootloader
         ${CONFIG_BOOTLOADER_OFFSET_IN_FLASH}
         "${BOOTLOADER_BUILD_DIR}/bootloader.bin")
+
+    # Add bootloader as a dependency to the flash target
+    add_dependencies(flash bootloader)
 endif()

components/esptool_py/project_include.cmake

@@ -745,39 +745,6 @@ function(__esptool_py_setup_utility_targets)
         )
 endfunction()
 
-# __esptool_py_setup_main_flash_target
-#
-# @brief Sets up the main `flash` target and its dependencies.
-#
-# This function creates the main `flash` target, which is used to flash multiple
-# images to the target device. It determines the dependencies for a full
-# project flash (bootloader, partition table, the main app) and then calls
-#
-function(__esptool_py_setup_main_flash_target)
-    __ensure_esptool_py_setup()
-
-    idf_build_get_property(non_os_build NON_OS_BUILD)
-
-    if(NOT non_os_build)
-        set(flash_deps "")
-
-        if(CONFIG_APP_BUILD_TYPE_APP_2NDBOOT)
-            list(APPEND flash_deps "partition_table_bin")
-        endif()
-
-        if(CONFIG_APP_BUILD_GENERATE_BINARIES)
-            list(APPEND flash_deps "app")
-        endif()
-
-        if(CONFIG_APP_BUILD_BOOTLOADER)
-            list(APPEND flash_deps "bootloader")
-        endif()
-
-        # Create the flash target. If encryption is enabled, it will also create
-        # an encrypted-flash target.
-        esptool_py_custom_target(flash project "${flash_deps}" FILENAME_PREFIX "flash")
-    endif()
-endfunction()
 
 # Adds espefuse functions for global use
 idf_component_get_property(esptool_py_dir esptool_py COMPONENT_DIR)

components/partition_table/CMakeLists.txt

@@ -174,5 +174,8 @@ if(CONFIG_APP_BUILD_GENERATE_BINARIES AND CONFIG_APP_BUILD_TYPE_APP_2NDBOOT)
                                         "${build_dir}/partition_table/${final_partition_bin}")
     esptool_py_flash_target_image(flash partition-table "${PARTITION_TABLE_OFFSET}"
                                         "${build_dir}/partition_table/${final_partition_bin}")
+
+    # Add partition table as a dependency to the flash target
+    add_dependencies(flash partition_table_bin)
     add_deprecated_target_alias(partition_table-flash partition-table-flash)
 endif()

tools/cmake/flash_targets.cmake

@@ -11,13 +11,16 @@ function(__idf_build_setup_flash_targets)
     idf_build_get_property(build_dir BUILD_DIR)
     idf_build_get_property(project_bin PROJECT_BIN)
     partition_table_get_partition_info(app_partition_offset "--partition-boot-default" "offset")
-    esptool_py_custom_target(app-flash app "app")
 
+    # Create app-flash target for flashing just the application
+    esptool_py_custom_target(app-flash app "app")
     esptool_py_flash_target_image(app-flash app "${app_partition_offset}" "${build_dir}/${project_bin}")
-    esptool_py_flash_target_image(flash app "${app_partition_offset}" "${build_dir}/${project_bin}")
 
-    # Setup the main flash target and dependencies
-    __esptool_py_setup_main_flash_target()
+    # Create main flash target for flashing the entire system (bootloader + partition table + app)
+    # Note: Bootloader and partition table components add their own dependencies to this flash target
+    #       in their respective CMakeLists.txt files
+    esptool_py_custom_target(flash project "app" FILENAME_PREFIX "flash")
+    esptool_py_flash_target_image(flash app "${app_partition_offset}" "${build_dir}/${project_bin}")
 
     # Generate flasher_args.json configuration files
     __idf_build_generate_flasher_args()