[coreboot] usbrom progress

Kevin O'Connor kevin at koconnor.net
Sun Aug 16 18:26:40 CEST 2009

On Mon, Aug 17, 2009 at 12:06:04AM +0800, Jason Wang wrote:
>  hi all,
>    here is my usbrom latest progress.
> 1) usbrom can hook int13
> 2) usbrom can support int13 lba mode which including int13,ah=02,42,41
> 3) usbrom can be used to boot grub from usb disk. Grub can step into
> stage1.5


> but there still some problems which should be considered
> 1) how to make usbrom only respond to requests which used for usb not hard
> disk. ( in my eyes, diff these requests by drive number?)
> 2) how do assign the drive number for usb disk? just followed by 80? anyone
> can give me an details about that?

This is covered in the bios boot specification (bbs) document.


> -- 
> Jason Wang
> Peking University

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