[nrf noup] Handle pending confirm requests

fixup! [nrf noup] bootloader: Add bootloader requests

Interpret pending bootloader requests while investigating the confirm
flag.

Signed-off-by: Tomasz Chyrowicz <tomasz.chyrowicz@nordicsemi.no>

Author: tomchy

boot/bootutil/src/bootutil_public.c

@@ -398,9 +398,59 @@ boot_write_image_ok(const struct flash_area *fap)
     return boot_write_trailer_flag(fap, off, BOOT_FLAG_SET);
 }
 
+#if defined(SEND_BOOT_REQUEST) || (!defined(MCUBOOT_BOOTUTIL_LIB_FOR_DIRECT_XIP))
+static int flash_area_to_image_slot(const struct flash_area *fa, uint32_t *slot)
+{
+    int id = flash_area_get_id(fa);
+#if BOOT_IMAGE_NUMBER > 1
+    uint8_t i = 0;
+
+    for (i = 0; i < BOOT_IMAGE_NUMBER; i++) {
+        if (FLASH_AREA_IMAGE_PRIMARY(i) == id) {
+            if (slot != NULL) {
+                *slot = 0;
+            }
+            return i;
+        } else if (FLASH_AREA_IMAGE_SECONDARY(i) == id) {
+            if (slot != NULL) {
+                *slot = 1;
+            }
+            return i;
+        }
+    }
+
+    /* Image not found */
+    *slot = UINT32_MAX;
+#else
+    (void)fa;
+    if (slot != NULL) {
+        if (FLASH_AREA_IMAGE_PRIMARY(0) == id) {
+            *slot = 0;
+        } else if (FLASH_AREA_IMAGE_SECONDARY(0) == id) {
+            *slot = 1;
+        } else {
+            *slot = UINT32_MAX;
+        }
+    }
+#endif
+    return 0;
+}
+#endif /* SEND_BOOT_REQUEST || !MCUBOOT_BOOTUTIL_LIB_FOR_DIRECT_XIP */
+
 int
 boot_read_image_ok(const struct flash_area *fap, uint8_t *image_ok)
 {
+#ifdef SEND_BOOT_REQUEST
+    enum boot_slot slot_id = BOOT_SLOT_NONE;
+    int image_id = flash_area_to_image_slot(fap, &slot_id);
+    bool confirm_pending = boot_request_check_confirmed_slot(image_id, slot_id);
+
+    if (confirm_pending) {
+        BOOT_LOG_DBG("Image confirmation pending for image %d slot %d", image_id, slot_id);
+        *image_ok = BOOT_FLAG_SET;
+        return 0;
+    }
+#endif /* SEND_BOOT_REQUEST */
     return boot_read_flag(fap, image_ok, boot_image_ok_off(fap));
 }
 
@@ -541,47 +591,6 @@ send_boot_request(uint8_t magic, uint8_t image_ok, bool confirm, int image_id,
 }
 #endif /* SEND_BOOT_REQUEST */
 
-#if defined(SEND_BOOT_REQUEST) || (!defined(MCUBOOT_BOOTUTIL_LIB_FOR_DIRECT_XIP))
-static int flash_area_to_image_slot(const struct flash_area *fa, uint32_t *slot)
-{
-    int id = flash_area_get_id(fa);
-#if BOOT_IMAGE_NUMBER > 1
-    uint8_t i = 0;
-
-    while (i < BOOT_IMAGE_NUMBER) {
-        if (FLASH_AREA_IMAGE_PRIMARY(i) == id) {
-            if (slot != NULL) {
-                *slot = 0;
-            }
-            return i;
-        } else if (FLASH_AREA_IMAGE_SECONDARY(i) == id) {
-            if (slot != NULL) {
-                *slot = 1;
-            }
-            return i;
-        }
-
-        ++i;
-    }
-
-    /* Image not found */
-    *slot = UINT32_MAX;
-#else
-    (void)fa;
-    if (slot != NULL) {
-        if (FLASH_AREA_IMAGE_PRIMARY(0) == id) {
-            *slot = 0;
-        } else if (FLASH_AREA_IMAGE_SECONDARY(0) == id) {
-            *slot = 1;
-        } else {
-            *slot = UINT32_MAX;
-        }
-    }
-#endif
-    return 0;
-}
-#endif /* defined(SEND_BOOT_REQUEST) || (!defined(MCUBOOT_BOOTUTIL_LIB_FOR_DIRECT_XIP)) */
-
 #ifndef MCUBOOT_BOOTUTIL_LIB_FOR_DIRECT_XIP
 int
 boot_set_next(const struct flash_area *fa, bool active, bool confirm)

boot/bootutil/zephyr/src/boot_request_retention.c

@@ -236,7 +236,6 @@ int boot_request_set_preferred_slot(uint8_t image, enum boot_slot slot)
 			       sizeof(value));
 }
 
-#ifdef CONFIG_FIND_NEXT_SLOT_HOOKS
 enum boot_slot boot_request_get_preferred_slot(uint8_t image)
 {
 	uint8_t value = BOOT_REQUEST_SLOT_INVALID;
@@ -265,7 +264,6 @@ enum boot_slot boot_request_get_preferred_slot(uint8_t image)
 
 	return BOOT_SLOT_NONE;
 }
-#endif /* CONFIG_FIND_NEXT_SLOT_HOOKS */
 
 int boot_request_enter_recovery(void)
 {

boot/zephyr/Kconfig

@@ -1441,15 +1441,4 @@ config NCS_MCUBOOT_IMG_VALIDATE_ATTEMPT_WAIT_MS
 	  Time between image validation attempts, in milliseconds.
 	  Allows for recovery from transient bit flips or similar situations.
 
-config NCS_MCUBOOT_BOOT_REQUEST_TEST_SETS_BOOT_PREFERENCE
-	bool "Set boot preference if a slot is marked for test"
-	help
-	  This option allows to verify boot preference requests through issuing
-	  the image test.
-	  Using this option is not recommended in production systems, because
-	  it will boot any newly transferred image, even if it has a lower
-	  version than the current one.
-	  The rollback protection (using security counters) will still be
-	  effective.
-
 source "Kconfig.zephyr"