boot: Add support for the Apache NuttX RTOS
Signed-off-by: Gustavo Henrique Nihei <gustavo.nihei@espressif.com>
diff --git a/boot/nuttx/main.c b/boot/nuttx/main.c
new file mode 100644
index 0000000..1b229c0
--- /dev/null
+++ b/boot/nuttx/main.c
@@ -0,0 +1,95 @@
+/****************************************************************************
+ * boot/nuttx/main.c
+ *
+ * Copyright (c) 2021 Espressif Systems (Shanghai) Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdio.h>
+
+#include <sys/boardctl.h>
+
+#include <bootutil/bootutil.h>
+#include <bootutil/image.h>
+
+#include "flash_map_backend/flash_map_backend.h"
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * do_boot
+ ****************************************************************************/
+
+static void do_boot(struct boot_rsp *rsp)
+{
+ struct flash_area *flash_area;
+ struct boardioc_boot_info_s info;
+ int area_id;
+ int ret;
+
+ area_id = flash_area_id_from_image_offset(rsp->br_image_off);
+
+ ret = flash_area_open(area_id, &flash_area);
+ assert(ret == OK);
+
+ printf("Booting from %s...\n", flash_area->fa_mtd_path);
+
+ info.path = flash_area->fa_mtd_path;
+ info.header_size = rsp->br_hdr->ih_hdr_size;
+
+ flash_area_close(flash_area);
+
+ if (boardctl(BOARDIOC_BOOT_IMAGE, &info) != OK)
+ {
+ fprintf(stderr, "Failed to load application image!\n");
+ FIH_PANIC;
+ }
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * main
+ ****************************************************************************/
+
+int main(int argc, FAR char *argv[])
+{
+ struct boot_rsp rsp;
+ fih_int fih_rc = FIH_FAILURE;
+
+ printf("*** Booting MCUboot build %s ***\n", CONFIG_MCUBOOT_VERSION);
+
+ FIH_CALL(boot_go, fih_rc, &rsp);
+
+ if (fih_not_eq(fih_rc, FIH_SUCCESS))
+ {
+ fprintf(stderr, "Unable to find bootable image\n");
+ FIH_PANIC;
+ }
+
+ do_boot(&rsp);
+
+ while (1);
+}