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From: Stefan Roese <sr@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] u-boot for SPEAr1310
Date: Thu, 23 Feb 2012 16:22:27 +0100	[thread overview]
Message-ID: <201202231622.28128.sr@denx.de> (raw)
In-Reply-To: <201202231549.02184.marek.vasut@gmail.com>

On Thursday 23 February 2012 15:49:02 Marek Vasut wrote:
> > My experience is mostly SPEAr600 only right now. Not sure if there are
> > bigger differences between those SoC's in the BootROM.
> 
> I believe the spear600 is totally different from 1300. But, simple:
> 
> reset halt ; load ... ; go ...
> 
> combo should work I believe. In case you're loading some U-Boot SPL, it's
> very good idea to put an "asm volatile("x : b x");" line into the SPL to
> make the CPU loop instead of try loading uboot. Since if the CPU is
> looping, you can break it with BDI, if it isn't looping and jumps to some
> garbage, it usually ends in undefined state and bootrom might further
> tamper with the CPU configuration.

Yes, good point. But a "STARTUP RESET ;no code is executed after reset" seems 
to solve this problem as well. At least for me on SPEAr600. I know. Since I 
broke my SPL from time to time. ;)
 
Best regards,
Stefan

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  reply	other threads:[~2012-02-23 15:22 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-02-23 14:17 [U-Boot] u-boot for SPEAr1310 Pavel Machek
2012-02-23 14:42 ` Stefan Roese
2012-02-23 14:49   ` Marek Vasut
2012-02-23 15:22     ` Stefan Roese [this message]
2012-02-23 15:24       ` Marek Vasut
2012-02-24 18:16     ` Pavel Machek
2012-02-24 18:36       ` Stefan Roese
2012-02-27  2:34         ` Vipin Kumar
2012-02-24 18:37       ` Marek Vasut
2012-02-24 18:46         ` Stefan Roese
2012-03-15 11:46           ` Pavel Machek
2012-02-24  2:11   ` Vipin Kumar

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