diff --git a/samples/mcuboot_config/mcuboot_config.template.h b/samples/mcuboot_config/mcuboot_config.template.h
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+++ b/samples/mcuboot_config/mcuboot_config.template.h
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+/*
+ * Copyright (c) 2018 Open Source Foundries Limited
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef __MCUBOOT_CONFIG_H__
+#define __MCUBOOT_CONFIG_H__
+
+/*
+ * Template configuration file for MCUboot.
+ *
+ * When porting MCUboot to a new target, copy it somewhere that your
+ * include path can find it as mcuboot_config/mcuboot_config.h, and
+ * make adjustments to suit your platform.
+ *
+ * For examples, see:
+ *
+ * boot/zephyr/include/mcuboot_config/mcuboot_config.h
+ * boot/mynewt/mcuboot_config/include/mcuboot_config/mcuboot_config.h
+ */
+
+/*
+ * Signature types
+ *
+ * You must choose exactly one signature type.
+ */
+
+/* Uncomment for RSA signature support */
+/* #define MCUBOOT_SIGN_RSA */
+
+/* Uncomment for ECDSA signatures using curve P-256. */
+/* #define MCUBOOT_SIGN_EC256 */
+
+
+/*
+ * Upgrade mode
+ *
+ * The default is to support A/B image swapping with rollback.  A
+ * simpler code path, which only supports overwriting the
+ * existing image with the update image, is also available.
+ */
+
+/* Uncomment to enable the overwrite-only code path. */
+/* #define MCUBOOT_OVERWRITE_ONLY */
+
+#ifdef MCUBOOT_OVERWRITE_ONLY
+/* Uncomment to only erase and overwrite those slot 0 sectors needed
+ * to install the new image, rather than the entire image slot. */
+/* #define MCUBOOT_OVERWRITE_ONLY_FAST */
+#endif
+
+/*
+ * Cryptographic settings
+ *
+ * You must choose between mbedTLS and Tinycrypt as source of
+ * cryptographic primitives. Other cryptographic settings are also
+ * available.
+ */
+
+/* Uncomment to use ARM's mbedTLS cryptographic primitives */
+/* #define MCUBOOT_USE_MBED_TLS */
+/* Uncomment to use Tinycrypt's. */
+/* #define MCUBOOT_USE_TINYCRYPT */
+
+/*
+ * Always check the signature of the image in slot 0 before booting,
+ * even if no upgrade was performed. This is recommended if the boot
+ * time penalty is acceptable.
+ */
+#define MCUBOOT_VALIDATE_SLOT0
+
+/*
+ * Flash abstraction
+ */
+
+/* Uncomment if your flash map API supports flash_area_get_sectors().
+ * See the flash APIs for more details. */
+/* #define MCUBOOT_USE_FLASH_AREA_GET_SECTORS */
+
+#endif /* __MCUBOOT_CONFIG_H__ */