Where do I find the source code for the preloader?

Boot
1

I need to build the preloader, but I don’t know where to get the source files. Anyone know?

2

The Preloader source code is created automatically by the Preloader Generator, in the folder specified in the options. See instructions on how to build the Preloader here: Generating and Compiling Preloader for Cyclone V GSRD 14.1 as an example.

Also take a look at the SoC EDS User Guide for reference information for Preloader and Preloader Generator.