From d24bdfcca2eb9d3ef9c5a77d5e96dc80c73cf13e Mon Sep 17 00:00:00 2001
From: xengineering <me@xengineering.eu>
Date: Sun, 23 Feb 2025 17:45:06 +0100
Subject: fw: btl: Integrate bootloader build

This allows to build the MCUboot bootloader as part of the existing
CMake build system.

The bootloader is embedded as external project since multiple Zephyr
applications in one build are not easily feasible.
---
 fw/CMakeLists.txt | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/fw/CMakeLists.txt b/fw/CMakeLists.txt
index 000039e..8c229e0 100644
--- a/fw/CMakeLists.txt
+++ b/fw/CMakeLists.txt
@@ -8,7 +8,24 @@ set(BOARD "nucleo_f767zi")
 set(ZEPHYR_MODULES
 	"${CMAKE_CURRENT_SOURCE_DIR}/zephyrproject/modules/hal/cmsis"
 	"${CMAKE_CURRENT_SOURCE_DIR}/zephyrproject/modules/hal/stm32"
+	"${CMAKE_CURRENT_SOURCE_DIR}/zephyrproject/modules/crypto/mbedtls"
+	"${CMAKE_CURRENT_SOURCE_DIR}/zephyrproject/bootloader/mcuboot"
 )
+
+string(REPLACE ";" "," ZEPHYR_MODULES_COMMA "${ZEPHYR_MODULES}")
+include(ExternalProject)
+ExternalProject_Add(
+	bootloader
+	PREFIX bootloader
+	SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/zephyrproject/bootloader/mcuboot/boot/zephyr"
+	BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}/bootloader"
+	INSTALL_COMMAND ""
+	LIST_SEPARATOR ","
+	CMAKE_ARGS
+		"-DBOARD=${BOARD}"
+		"-DZEPHYR_MODULES=${ZEPHYR_MODULES_COMMA}"
+)
+
 find_package(Zephyr
 	REQUIRED
 	HINTS
-- 
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