incbin <file>[,<offset>[,<length>]]Inserts the binary contents of <file> into the object code at this position.
When <offset> is specified, then the given number of bytes will be skipped at the beginning of the file. The optional <length> argument specifies the maximum number of bytes to be read from that file. The file will be searched first in the current directory, then in all paths defined by -I or incdir in the order of occurrence.