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Re: ppc

From: Marco Gerards
Subject: Re: ppc
Date: 07 Oct 2003 20:00:37 +0200
User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2

Yoshinori Okuji <address@hidden> writes:


> How to extend it to PowerPC? That is a difficult question but quite
> interesting.

Absolutely.  I think it won't even be hard to port PUPA to the
New world apples for example.
> There was an idea that could make the specification more extensible. 
> Currently,
> it defines a big table which points to external memory regions, and uses
> bitfields to identify which members are valid. That's not good. Everytime you
> want to add new features, you would have to find a unused field and define new
> members, etc.

This sounds really interesting.


> One question is that the current specification is widely used, so people might
> not want to migrate to a new version.

Isn't it possible to claim just one bit to add a new member in which
these items are stored?  This way PUPA implement this new
specification (after it is written) and also the old one.  Perhaps the
last will be only possible when using a backwards compatibility
configure switch (--enable-old-multiboot, something like that).

Because I'm quite new to GRUB I don't know the consequences of such


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