Eric Seppanen <[EMAIL PROTECTED]> writes: > On Mon, Mar 04, 2002 at 07:41:41PM -0500, Jeff Garzik wrote: > > Eric Seppanen wrote: > > > > > > On Mon, Mar 04, 2002 at 07:20:49PM -0500, Jeff Garzik wrote: > > > > "Richard A. Smith" wrote: > > > > > > > > > > What would be the possibility of writeing linux bios so that it shows > > > > > up as a bios extension that never returns. > > > > > > > > > > Bios extensions are called very early in the init sequence. > > > > > > > > What the heck are you talking about? linuxbios --is-- the init > > > > sequence. > > > > > > Picture an add-in card that contains linuxbios and can basically hijack > > > the computer from the (possibly soldered-down) factory bios. > > > > > > Do I win a prize? > > > > That is so far from what linuxbios is trying to do now... if you want > > to code all that effort for a corner case nobody cares about, go ahead > > :) > > I'm not sure if you understand what I mean. A recurring issue on this > list is the trouble caused by motherboards with non-DIP BIOS flash > devices, motherboards without high address lines connected to the flash > socket, and motherboards that have soldered down the flash part. > > There's also the issue of people doing amateur development at home > ending up with motherboards that are now doorstops; they have corrupted > their only flash device and can no longer boot the board. > > Both of these are real problems that could be solved if you could do > linuxbios by plugging it into a system as an "extension rom" that > hijacks the system, never returning. > > But you may be right about nobody caring: I don't. I work on embedded > boards, so when I want 4MB of flash, I get it :)
Basically you get that functionallity with stock etherboot. You can not do useful debugging of LinuxBIOS without actually running the code. The only other way you could set things up is to use a simulator, and for the most part that is much more work than actually implementing LinuxBIOS. The prize will be for find a cheap source of ROM emulators that you can plug into a ROM socket, and reprogram from another machine. Tyson had one of those. Eric
