Re: [PATCH 0/5] Zynq support for barebox

From: Steffen Trumtrar <s.trumtrar@pengutronix.de>
To: Josh Cartwright <joshc@eso.teric.us>
Cc: barebox@lists.infradead.org, Michal Simek <monstr@monstr.eu>
Subject: Re: [PATCH 0/5] Zynq support for barebox
Date: Wed, 6 Mar 2013 18:28:50 +0100	[thread overview]
Message-ID: <20130306172850.GA30452@pengutronix.de> (raw)
In-Reply-To: <20130305170929.GD16050@kryptos>

On Tue, Mar 05, 2013 at 11:09:29AM -0600, Josh Cartwright wrote:
> On Sun, Mar 03, 2013 at 03:58:10PM +0100, Steffen Trumtrar wrote:
> > Hi!
> > 
> > On Sat, Mar 02, 2013 at 07:20:12PM -0600, Josh Cartwright wrote:
> > > In San Francisco a couple weeks ago (ELC2013), Thomas Petazzoni
> > > informally mentioned barebox in passing, so I decided to toy with it a
> > > bit...
> > > 
> > > This patchset adds basic support for the Zynq SoC to barebox.  So far,
> > > it's only been tested as a 'secondary' bootloader (after u-boot).  Also
> > > added is support for the zc702 development board.
> > > 
> > 
> > I have some patches laying around, that have support for booting first stage
> > from a SD-Card on a ZedBoard. I didn't send them as of yet, because I'm not
> > completely satisfied with them in one or two places. (The clocksource seems to
> > be inverse to what barebox expects, which would be a quick fix, and barebox boots
> > uuultra slow, if I do everything according to the TRM)
> > At the moment, I do not have access to the board though. But I hope I can get a
> > hand on it in the next days.
> 
> If you have a chance to send out what you have, I'd be curious to see
> it.  Fortunately I have several Zynq boards to play with.
> 

Hi!

Have a look at
http://git.pengutronix.de/?p=str/barebox.git;a=summary

I "stole" your clk driver and added it to my patch stack :-)
Current state for ZedBoard:
	- boot first stage from SD-Card
		- barebox.bin needs to be processed with
		./scripts/zynq_checksum barebox.bin BOOT.bin
		to have the checksum in the BootROM header
	- clocksource is arm_smp_tmd at seems accurate
	- the BootROM needs about 4-5 seconds to copy barebox from
	  SD to the OCM. I guess, I need to mess with the SD setup
	  in the BootROM somehow
	- just enough clkdev to use the timer
	- all pinctrl, clk setup etc happens in the lowlevel init

Regards,
Steffen

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