[nrf noup] zephyr: Add support for three images

The commit modifies pm_sysflash.h to add support for three
application images.

(cherry picked from commit 8fba4db)
Signed-off-by: Dominik Ermel <[email protected]>

Author: de-nordic

boot/zephyr/include/sysflash/pm_sysflash.h

@@ -11,37 +11,17 @@
 
 #include <pm_config.h>
 #include <mcuboot_config/mcuboot_config.h>
+#include <flash_map_pm.h>
 
 #ifndef CONFIG_SINGLE_APPLICATION_SLOT
 
-#if (MCUBOOT_IMAGE_NUMBER == 1)
-
-#define FLASH_AREA_IMAGE_PRIMARY(x)     PM_MCUBOOT_PRIMARY_ID
-#define FLASH_AREA_IMAGE_SECONDARY(x)   PM_MCUBOOT_SECONDARY_ID
-
-#elif (MCUBOOT_IMAGE_NUMBER == 2)
+#if (MCUBOOT_IMAGE_NUMBER == 2) && defined(PM_B0_ADDRESS) && \
+      !defined(CONFIG_NRF53_MULTI_IMAGE_UPDATE)
 
 /* If B0 is present then two bootloaders are present, and we must use
  * a single secondary slot for both primary slots.
  */
-#if defined(PM_B0_ADDRESS)
 extern uint32_t _image_1_primary_slot_id[];
-#endif
-#if defined(PM_B0_ADDRESS) && defined(CONFIG_NRF53_MULTI_IMAGE_UPDATE)
-#define FLASH_AREA_IMAGE_PRIMARY(x)             \
-        ((x == 0) ?                             \
-           PM_MCUBOOT_PRIMARY_ID :              \
-         (x == 1) ?                             \
-           PM_MCUBOOT_PRIMARY_1_ID :            \
-           255 )
-
-#define FLASH_AREA_IMAGE_SECONDARY(x)           \
-        ((x == 0) ?                             \
-           PM_MCUBOOT_SECONDARY_ID:             \
-        (x == 1) ?                              \
-           PM_MCUBOOT_SECONDARY_1_ID:           \
-           255 )
-#elif defined(PM_B0_ADDRESS)
 
 #define FLASH_AREA_IMAGE_PRIMARY(x)             \
         ((x == 0) ?                             \
@@ -56,26 +36,52 @@ extern uint32_t _image_1_primary_slot_id[];
         (x == 1) ?                              \
            PM_MCUBOOT_SECONDARY_ID:             \
            255 )
+
+#else  /* MCUBOOT_IMAGE_NUMBER == 2) && defined(PM_B0_ADDRESS) && \
+        * !defined(CONFIG_NRF53_MULTI_IMAGE_UPDATE)
+        */
+
+/* Each pair of slots is separated by , and there is no terminating character */
+#define FLASH_AREA_IMAGE_0_SLOTS    PM_MCUBOOT_PRIMARY_ID, PM_MCUBOOT_SECONDARY_ID
+#define FLASH_AREA_IMAGE_1_SLOTS    PM_MCUBOOT_PRIMARY_1_ID, PM_MCUBOOT_SECONDARY_1_ID
+#define FLASH_AREA_IMAGE_2_SLOTS    PM_MCUBOOT_PRIMARY_2_ID, PM_MCUBOOT_SECONDARY_2_ID
+
+#if (MCUBOOT_IMAGE_NUMBER == 1)
+#define ALL_AVAILABLE_SLOTS FLASH_AREA_IMAGE_0_SLOTS
+#elif (MCUBOOT_IMAGE_NUMBER == 2)
+#define ALL_AVAILABLE_SLOTS FLASH_AREA_IMAGE_0_SLOTS, \
+                            FLASH_AREA_IMAGE_1_SLOTS
+#elif (MCUBOOT_IMAGE_NUMBER == 3)
+#define ALL_AVAILABLE_SLOTS FLASH_AREA_IMAGE_0_SLOTS, \
+                            FLASH_AREA_IMAGE_1_SLOTS, \
+                            FLASH_AREA_IMAGE_2_SLOTS
 #else
+#error Unsupported number of images
+#endif
 
-#define FLASH_AREA_IMAGE_PRIMARY(x)             \
-        ((x == 0) ?                             \
-           PM_MCUBOOT_PRIMARY_ID :              \
-         (x == 1) ?                             \
-           PM_MCUBOOT_PRIMARY_1_ID :            \
-           255 )
+static inline uint32_t __flash_area_ids_for_slot(int img, int slot)
+{
+    static const int all_slots[] = {
+	ALL_AVAILABLE_SLOTS
+    };
+    return all_slots[img * 2 + slot];
+};
 
-#define FLASH_AREA_IMAGE_SECONDARY(x)           \
-        ((x == 0) ?                             \
-           PM_MCUBOOT_SECONDARY_ID:             \
-        (x == 1) ?                              \
-           PM_MCUBOOT_SECONDARY_1_ID:           \
-           255 )
+#undef FLASH_AREA_IMAGE_0_SLOTS
+#undef FLASH_AREA_IMAGE_1_SLOTS
+#undef FLASH_AREA_IMAGE_2_SLOTS
+#undef ALL_AVAILABLE_SLOTS
 
-#endif /* PM_B0_ADDRESS */
+#define FLASH_AREA_IMAGE_PRIMARY(x) __flash_area_ids_for_slot(x, 0)
+#define FLASH_AREA_IMAGE_SECONDARY(x) __flash_area_ids_for_slot(x, 1)
 
+#if !defined(CONFIG_BOOT_SWAP_USING_MOVE)
+#define FLASH_AREA_IMAGE_SCRATCH    PM_MCUBOOT_SCRATCH_ID
 #endif
-#define FLASH_AREA_IMAGE_SCRATCH        PM_MCUBOOT_SCRATCH_ID
+
+#endif /* MCUBOOT_IMAGE_NUMBER == 2) && defined(PM_B0_ADDRESS) && \
+        * !defined(CONFIG_NRF53_MULTI_IMAGE_UPDATE)
+        */
 
 #else /* CONFIG_SINGLE_APPLICATION_SLOT */