Revert "[nrf noup] loader: Fix reading reset addr to support ext flash"

This reverts commit b0be469.

Signed-off-by: Andrzej Puzdrowski <andrzej.puzdrowski@nordicsemi.no>

boot/bootutil/src/loader.c

@@ -917,9 +917,10 @@ boot_validated_swap_type(struct boot_loader_state *state,
 #if defined(PM_S1_ADDRESS) || defined(CONFIG_SOC_NRF5340_CPUAPP)
     const struct flash_area *secondary_fa =
         BOOT_IMG_AREA(state, BOOT_SECONDARY_SLOT);
-    struct image_header *hdr = boot_img_hdr(state, BOOT_SECONDARY_SLOT);
+    struct image_header *hdr = (struct image_header *)secondary_fa->fa_off;
+    uint32_t vtable_addr = 0;
+    uint32_t *vtable = 0;
     uint32_t reset_addr = 0;
-    int rc = 0;
     /* Patch needed for NCS. Since image 0 (the app) and image 1 (the other
      * B1 slot S0 or S1) share the same secondary slot, we need to check
      * whether the update candidate in the secondary slot is intended for
@@ -929,19 +930,16 @@ boot_validated_swap_type(struct boot_loader_state *state,
      */
 
     if (hdr->ih_magic == IMAGE_MAGIC) {
-        rc = flash_area_read(secondary_fa, hdr->ih_hdr_size +
-				 sizeof(uint32_t), &reset_addr,
-				 sizeof(reset_addr));
-        if (rc != 0) {
-            return BOOT_SWAP_TYPE_FAIL;
-        }
+        vtable_addr = (uint32_t)hdr + hdr->ih_hdr_size;
+        vtable = (uint32_t *)(vtable_addr);
+        reset_addr = vtable[1];
 #ifdef PM_S1_ADDRESS
 #ifdef PM_CPUNET_B0N_ADDRESS
         if(reset_addr < PM_CPUNET_B0N_ADDRESS)
 #endif
         {
             const struct flash_area *primary_fa;
-            rc = flash_area_open(flash_area_id_from_multi_image_slot(
+            int rc = flash_area_open(flash_area_id_from_multi_image_slot(
                         BOOT_CURR_IMG(state),
                         BOOT_PRIMARY_SLOT),
                     &primary_fa);
@@ -983,12 +981,10 @@ boot_validated_swap_type(struct boot_loader_state *state,
          * available
          */
         if (upgrade_valid && reset_addr > PM_CPUNET_B0N_ADDRESS) {
-            struct image_header *hdr = (struct image_header *)secondary_fa->fa_off;
-            uint32_t vtable_addr = (uint32_t)hdr + hdr->ih_hdr_size;
-            uint32_t *net_core_fw_addr = (uint32_t *)(vtable_addr);
             uint32_t fw_size = hdr->ih_img_size;
+
             BOOT_LOG_INF("Starting network core update");
-            rc = pcd_network_core_update(net_core_fw_addr, fw_size);
+            int rc = pcd_network_core_update(vtable, fw_size);
 
             if (rc != 0) {
                 swap_type = BOOT_SWAP_TYPE_FAIL;