On Thu, 05 Oct 2006 09:29:42 -0600 [EMAIL PROTECTED] (Eric W. Biederman) wrote:
> > In the lazy programmer school of fixes. > > I haven't really tested this in any configuration. > But reading video.S it does use variable in the bootsector. > It does seem to initialize the variables before use. > But obviously something is missed. > > By zeroing the uninteresting parts of the bootsector just after we > have determined we are loaded ok. We should ensure we are > always in a known state the entire time. > > Andrew if I am right about the cause of your video not working > when you set an enhanced video mode this should fix your boot > problem. > > Singed-off-by: Eric Biederman <[EMAIL PROTECTED]> > > diff --git a/arch/i386/boot/setup.S b/arch/i386/boot/setup.S > index 53903a4..246ac88 100644 > --- a/arch/i386/boot/setup.S > +++ b/arch/i386/boot/setup.S > @@ -287,6 +287,13 @@ # Check if an old loader tries to load a > loader_panic_mess: .string "Wrong loader, giving up..." > > loader_ok: > +# Zero initialize the variables we keep in the bootsector > + xorw %di, %di > + xorb %al, %al > + movw $497, %cx > + rep > + stosb > + > # Get memory size (extended mem, kB) > > xorl %eax, %eax That fixed the vga=0x263 crash. _______________________________________________ fastboot mailing list [email protected] https://lists.osdl.org/mailman/listinfo/fastboot
