pub unsafe extern "C" fn bootloader_load_image(
    part: *const esp_partition_pos_t,
    data: *mut esp_image_metadata_t,
) -> i32Expand description
@brief Verify and load an app image (available only in space of bootloader).
If encryption is enabled, data will be transparently decrypted.
@param part Partition to load the app from. @param[inout] data Pointer to the image metadata structure which is be filled in by this function. ‘start_addr’ member should be set (to the start address of the image.) Other fields will all be initialised by this function.
Image validation checks:
- Magic byte.
 - Partition smaller than 16MB.
 - All segments & image fit in partition.
 - 8 bit image checksum is valid.
 - SHA-256 of image is valid (if image has this appended).
 - (Signature) if signature verification is enabled.
 
@return
- ESP_OK if verify or load was successful
 - ESP_ERR_IMAGE_FLASH_FAIL if a SPI flash error occurs
 - ESP_ERR_IMAGE_INVALID if the image appears invalid.
 - ESP_ERR_INVALID_ARG if the partition or data pointers are invalid.