diff --git a/include/spi_flash.h b/include/spi_flash.h
index 1a11286..2db53c7 100644
--- a/include/spi_flash.h
+++ b/include/spi_flash.h
@@ -158,5 +158,6 @@
 }
 
 void spi_boot(void) __noreturn;
+void spi_spl_load_image(uint32_t offs, unsigned int size, void *vdst);
 
 #endif /* _SPI_FLASH_H_ */