[LinuxBIOS] Re: Linuxbios is always 421bytes larger than allowed

[Steve Magnani]

I ran into something like this not long ago. It might be that _start is
too far away from the top of memory. Try editing
src/cpu/x86/16bit/reset16.lds and change this:

_ROMTOP = (_start >= 0xffff0000) ? 0xfffffff0 : 0xffffffff8;

to this:

_ROMTOP = (_start >= 0xffff0000) ? 0xfffffff0 : 0xffffffff0;

Then re-build. If it builds successfully, that's the problem, and you'll
have to juggle your code or reduce it so that _start ends up at 0xFFFF0000
or greater.

On an editorial note, it's nice that the build system catches this
problem, but I really wish it did it in a way that made it more obvious
what the problem is.

Steve