as host based utilities to create and manage the ROM. The master header
will be located somewhere within the bootblock (last 20k of the ROM). A
pointer to the location of the header will be located at offset
--12 from the end of the ROM. This translates to address 0xFFFFFFF4 on a
+-4 from the end of the ROM. This translates to address 0xFFFFFFFC on a
normal x86 system. The pointer will be to physical memory somewhere
between - 0xFFFFB000 and 0xFFFFFFF0. This makes it easier for coreboot
to locate the header at run time. Build time utilities will