Platform bus/ppc sys model - [Fwd: bi_recs and u-boot ppcboot.h]

Platform bus/ppc sys model - [Fwd: bi_recs and u-boot ppcboot.h]

[Jon Masters]

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Hi all,

I hope Wolfgang doesn't mind me forwarding this :-) This is what I have
some limited time for at the moment - but work takes priority!

Cheers,

Jon.

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Subject: bi_recs and u-boot ppcboot.h
Date: Fri, 11 Mar 2005 03:00:18 +0000
From: Jon Masters <jonathan@jonmasters.org>
Organization: World Organi[sz]ation Of Broken Dreams
To: Wolfgang Denk <wd@denx.de>

Hi Wolfgang,

I'm looking at this bi_recs replacement again. Do you have any
particular objection to me extending bd_info (at the end, only if
CONFIG_FAKEOFTREE is selected) to add a pointer to a BLOB of fake OF
device tree?

Assuming not, I'm going to try to figure out how to do this in u-boot.
Do you have a ppc405 board online at the moment with a BDI2000 OOI? I
can't see one on pollux or xpert at the moment - if you've got one spare
that can be made available at some point, please let me know.

( basically, I've got ppcboot on an old CPCI405 here but it's not
trivial to fix if I break it and I don't know much about whether u-boot
supports chaining in to a new u-boot loaded from within itself...but it
probably does, I guess. Bah, it's late, I'm rambling...).

Cheers,

Jon.
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Re: Platform bus/ppc sys model - [Fwd: bi_recs and u-boot ppcboot.h]

[Stefan Roese]

Hi Jon,

On Thursday 31 March 2005 14:36, Jon Masters wrote:

> ( basically, I've got ppcboot on an old CPCI405 here but it's not
> trivial to fix if I break it

The CPCI405 supports switching the boot-cs between its 2 flash chips with the
DIP-switch 4. You could copy the current ppcboot version into the 2nd flash
chip as a fallback (please test it once).

Please make sure to use the "CPCI405" U-Boot make-target and _not_ CPCI4052
for a revision 1.x board. To be sure what version of the board you have,
please take a look at the FPGA. If it's a Spartan 05 then it's a revision 1.x
board, if it's a Spartan 2 15 it's a revision 2.x board.

> and I don't know much about whether u-boot
> supports chaining in to a new u-boot loaded from within itself...but it
> probably does, I guess. Bah, it's late, I'm rambling...).

I am pretty sure that the current versions of U-Boot work without problems on
the CPCI405 boards (even revision 1.x).

Best regards,
Stefan