amd64 native boot loader?
bruce at cran.org.uk
Sat Dec 22 01:33:10 PST 2007
> i've FBSD/amd64 62Rp9 installed. kernel & world are my own builds
> from latest cvsup.
> on boot I see:
> "FreeBSD/i386 bootstrap loader"
> odd. i'd expect a native loader ...
> checking in,
> /usr/src/sys/boot > ls
> Makefile alpha/ arm/ efi/ forth/ ia64/ pc98/
> README arc/ common/ ficl/ i386/ ofw/ powerpc/
> other arches seem to be there ... just not amd64.
> where's the src for the amd64?
AMD64 CPUs are backwards compatible with i386; they boot in 16-bit real
mode and only get switched into 64-bit 'long mode' by the kernel later
on. Since both i386 and amd64 start booting in the same way, there's no
need for separate bootloaders.
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