[nrf fromtree] dfu: Allow to use imgtool-based headers

It is possible to add MCUboot header through --pad-header option.
In such cases, the FLASH_LOAD_OFFSET does not point to the beginning of
the slot, but to the beginning of the executable area, thus the check
for the active slot should use ranges instead of exact values.

Signed-off-by: Tomasz Chyrowicz <[email protected]>
(cherry picked from commit 3261569)

Author: tomchy

subsys/dfu/img_util/flash_img.c

@@ -23,8 +23,9 @@ LOG_MODULE_REGISTER(flash_img, CONFIG_IMG_MANAGER_LOG_LEVEL);
 #include <bootutil/bootutil_public.h>
 #endif
 
-#define FIXED_PARTITION_IS_RUNNING_APP_PARTITION(label) \
-	(FIXED_PARTITION_OFFSET(label) == CONFIG_FLASH_LOAD_OFFSET)
+#define FIXED_PARTITION_IS_RUNNING_APP_PARTITION(label)                                            \
+	(FIXED_PARTITION_OFFSET(label) <= CONFIG_FLASH_LOAD_OFFSET &&                              \
+	 FIXED_PARTITION_OFFSET(label) + FIXED_PARTITION_SIZE(label) > CONFIG_FLASH_LOAD_OFFSET)
 
 #include <zephyr/devicetree.h>
 #if defined(CONFIG_TRUSTED_EXECUTION_NONSECURE) && (CONFIG_TFM_MCUBOOT_IMAGE_NUMBER == 2)

subsys/mgmt/mcumgr/grp/img_mgmt/src/img_mgmt.c

@@ -48,8 +48,9 @@
 	to be able to figure out application running slot.
 #endif
 
-#define FIXED_PARTITION_IS_RUNNING_APP_PARTITION(label)	\
-	 (FIXED_PARTITION_OFFSET(label) == CONFIG_FLASH_LOAD_OFFSET)
+#define FIXED_PARTITION_IS_RUNNING_APP_PARTITION(label)                                            \
+	(FIXED_PARTITION_OFFSET(label) <= CONFIG_FLASH_LOAD_OFFSET &&                              \
+	 FIXED_PARTITION_OFFSET(label) + FIXED_PARTITION_SIZE(label) > CONFIG_FLASH_LOAD_OFFSET)
 
 BUILD_ASSERT(sizeof(struct image_header) == IMAGE_HEADER_SIZE,
 	     "struct image_header not required size");

tests/subsys/dfu/img_util/src/main.c

@@ -12,8 +12,9 @@
 #define SLOT0_PARTITION		slot0_partition
 #define SLOT1_PARTITION		slot1_partition
 
-#define FIXED_PARTITION_IS_RUNNING_APP_PARTITION(label) \
-	(FIXED_PARTITION_OFFSET(label) == CONFIG_FLASH_LOAD_OFFSET)
+#define FIXED_PARTITION_IS_RUNNING_APP_PARTITION(label)                                            \
+	(FIXED_PARTITION_OFFSET(label) <= CONFIG_FLASH_LOAD_OFFSET &&                              \
+	 FIXED_PARTITION_OFFSET(label) + FIXED_PARTITION_SIZE(label) > CONFIG_FLASH_LOAD_OFFSET)
 
 #if FIXED_PARTITION_IS_RUNNING_APP_PARTITION(slot0_partition)
 #define UPLOAD_PARTITION_ID	FIXED_PARTITION_ID(SLOT1_PARTITION)