commit fd79db3a9f5c057ceadb3fe6ef52479636ab4cda
author Jamie McCrae <jamie.mccrae@nordicsemi.no> Fri Mar 10 11:19:36 2023 +0000
committer Dominik Ermel <56024351+de-nordic@users.noreply.github.com> Thu Apr 13 20:07:55 2023 +0200
tree 3eb5ae326c8f5b8382ab7fd430608512ad14d0fa
parent b3e3ce39f3e1abd95ff4010263b3613edf59dd54

zephyr: boot: serial_recovery: Add no application entrace method

Adds a bootloader serial recovery entrance mode that will allow
recovering a module if there is no application that can be booted.

Signed-off-by: Jamie McCrae <jamie.mccrae@nordicsemi.no>

boot/zephyr/main.c

diff --git a/boot/zephyr/main.c b/boot/zephyr/main.c
index 8c2b98e..4a672fd 100644
--- a/boot/zephyr/main.c
+++ b/boot/zephyr/main.c
@@ -128,7 +128,8 @@
 #ifdef CONFIG_MCUBOOT_SERIAL
 #if !defined(CONFIG_BOOT_SERIAL_ENTRANCE_GPIO) && \
     !defined(CONFIG_BOOT_SERIAL_WAIT_FOR_DFU) && \
-    !defined(CONFIG_BOOT_SERIAL_BOOT_MODE)
+    !defined(CONFIG_BOOT_SERIAL_BOOT_MODE) && \
+    !defined(CONFIG_BOOT_SERIAL_NO_APPLICATION)
 #error "Serial recovery selected without an entrance mode set"
 #endif
 #endif
@@ -596,6 +597,19 @@
 
         mcuboot_status_change(MCUBOOT_STATUS_NO_BOOTABLE_IMAGE_FOUND);
 
+#ifdef CONFIG_BOOT_SERIAL_NO_APPLICATION
+        /* No bootable image and configuration set to remain in serial
+         * recovery mode
+         */
+#ifdef CONFIG_MCUBOOT_INDICATION_LED
+        gpio_pin_set_dt(&led0, 1);
+#endif
+
+        mcuboot_status_change(MCUBOOT_STATUS_SERIAL_DFU_ENTERED);
+        rc = boot_console_init();
+        boot_serial_start(&boot_funcs);
+#endif
+
         FIH_PANIC;
     }