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

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

[Jon Masters]

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- -------- Original Message --------
Subject: Re: Platform bus/ppc sys model - [Fwd: bi_recs and u-boot
ppcboot.h]
Date: Mon, 04 Apr 2005 08:28:39 +0100
From: Jon Masters <jonathan@jonmasters.org>
Organization: World Organi[sz]ation Of Broken Dreams
To: Stefan Roese <sr@denx.de>
CC: Linuxppc-Embedded <linuxppc-embedded@lists.linuxppc.org>
References: <424BEECD.8020303@jonmasters.org>
<200504040844.34428.sr@denx.de>

Hi Stefan, other folks,

Sorry I've not replied to some of the other threads - suffice it to say
I've had a busy weekend hacking on an ecos HAL. Anyway, I'll get synced
up again today or tomorrow, just in time to jump on a plane to USENIX :-)

Stefan Roese wrote:

| 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).

Oooh. I didn't know that (don't have the schematics here :P) - cheers.
I'll try doing that before I go away :-) If I can do this then I'll have
at least something vaguely sacrificial to work with here, I think the
current plan as discussed is vaguely worth persuing, even though it
might not be the optimal eventual solution. Will followup shortly.

What should happen is that OF trees get written like they do for mol and
then automagically converted in to a BLOB for use with u-boot - no, I
don't think this is the grand unified solution to everything, but I do
think it will persuade someone to find a cross platform solution.

FWIW Stefan, I am just setting up a similar power cycler setup to what
you guys have there - found a cheap supplier of wireless 13A mains
socket automation kits (<15EUR) in the local electronics store,
butchered remote control unit, sufficient for a cheapo cycler.

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

[Wolfgang Denk]

In message <4250ED79.6010304@jonmasters.org> you wrote:
>
> | 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).
> 
> Oooh. I didn't know that (don't have the schematics here :P) - cheers.

BTW: I will attach the BDI2000 to the CPCI405 tomorrow or so, so  you
can continue debugging in our virtual lab, too.

> FWIW Stefan, I am just setting up a similar power cycler setup to what
> you guys have there - found a cheap supplier of wireless 13A mains
> socket automation kits (<15EUR) in the local electronics store,
> butchered remote control unit, sufficient for a cheapo cycler.

Can you please send me some more details?

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de
There are certain things men must do to remain men.
	-- Kirk, "The Ultimate Computer", stardate 4929.4

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

[Jon Masters]

Wolfgang Denk wrote:

> In message <4250ED79.6010304@jonmasters.org> you wrote:
> 
>>| 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).
>>
>>Oooh. I didn't know that (don't have the schematics here :P) - cheers.

> BTW: I will attach the BDI2000 to the CPCI405 tomorrow or so, so  you
> can continue debugging in our virtual lab, too.

Good. I'll work with the Freescale guys to get somewhere with the OF 
stuff - I know you're not so keen on this as the final solution, and I 
agree with you, but it looks like there might be sufficient critical 
mass here to finally do something about ppc boot records.

>>FWIW Stefan, I am just setting up a similar power cycler setup to what
>>you guys have there - found a cheap supplier of wireless 13A mains
>>socket automation kits (<15EUR) in the local electronics store,
>>butchered remote control unit, sufficient for a cheapo cycler.

> Can you please send me some more details?

I bought one of these yesterday:

http://www.maplin.co.uk/Module.aspx?ModuleNo=-10523&TabID=1&source=15&WorldID=&doy=4m4

The remote control is trivially butchered and the buttons replaced with 
NPN transistors running off a PIC16F628 (well it will be by tonight). 
I've got a MAX233 doing RS232 to a PC for another project so am just 
reusing the comms to allow remote on/off control of 4-16 devices.

Jon.