boot_serial: Allow direct image upload
The commit provides support for "image" parameter in mcumgr image
update frame, that is used to select image number to be updated;
for the purpose, the option MCUBOOT_SERIAL_DIRECT_IMAGE_UPLOAD
that enables the feature.
Platform that enables the feature needs, to provide an implementation
of the flash_area_id_from_direct_image function that will match
the image number to flash area to upload to.
Signed-off-by: Dominik Ermel <dominik.ermel@nordicsemi.no>
diff --git a/boot/boot_serial/src/boot_serial.c b/boot/boot_serial/src/boot_serial.c
index baff764..8168d93 100644
--- a/boot/boot_serial/src/boot_serial.c
+++ b/boot/boot_serial/src/boot_serial.c
@@ -288,7 +288,11 @@
goto out_invalid_data;
}
+#if !defined(MCUBOOT_SERIAL_DIRECT_IMAGE_UPLOAD)
rc = flash_area_open(flash_area_id_from_multi_image_slot(img_num, 0), &fap);
+#else
+ rc = flash_area_open(flash_area_id_from_direct_image(img_num), &fap);
+#endif
if (rc) {
rc = MGMT_ERR_EINVAL;
goto out;