Re: [Qemu-devel] [PATCH 0/2] extboot reloaded.

[Anthony Liguori]

Gerd Hoffmann wrote:
>   Hi,
>
> How about this one?  extboot rom and interface are unmodified.
>
> The windup in qemu is very different though.  It is now implemented as
> isa bus device (which is what extboot actually is).  It is properly
> integrated into qdev.  It is much less invasive than the previous
> version.  The patch just drops a hw/extboot.c file into the tree and
> adds it to Makefile.target.  No code changes anywhere else in qemu.
>
> The magic words to activate extboot are '-device extboot,drive=<name>'.
>   

If we were going to introduce a light weight block protocol like this, 
I'd rather it be implemented in SeaBIOS as a block driver.  Then we 
reuse all of the int13 code, it gets registered as a BCV device allowing 
selection in the boot menu, and requires no special options on the 
command line.

It would require a mechanism to do enumeration and identification though.

Regards,

Anthony Liguori

> cheers,
>   Gerd
>
>
>
>