From: Jens Gehrlein <sew_s@tqs.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] ppc: using d-cache for C stack and as cache at thesame time?
Date: Wed, 01 Apr 2009 17:03:31 +0200 [thread overview]
Message-ID: <49D38243.8090000@tqs.de> (raw)
In-Reply-To: <1238597311.25101.13.camel@localhost.localdomain>
Peter Tyser schrieb:
> You should be able to use the 85xx DMA engine to generate the bursts too
> (I'd assume the same for 83xx, but never tried it). See
> cpu/mpc85xx/cpu.c dma_*(). The default values of the satr0 and datr0
> don't allow the processor to snoop transactions, so you'd have to use
> cache operations or change datr0/satr0 to something like 0x50000 for
> your tests.
>
> We've added a very basic DMA test to the mtest command which is used for
> board testing here. Let me know if you'd like me to send it - its not
> cleaned up but could give you a starting point.
Although, I will not start before next month with burst testing, it
would be very nice, if could send it. Thank you very much.
Kind regards,
Jens
next prev parent reply other threads:[~2009-04-01 15:03 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-01 8:20 [U-Boot] ppc: using d-cache for C stack and as cache at the same time? Jens Gehrlein
2009-04-01 9:14 ` Wolfgang Denk
2009-04-01 9:29 ` [U-Boot] ppc: using d-cache for C stack and as cache at thesame time? Liu Dave-R63238
2009-04-01 9:47 ` Jens Gehrlein
2009-04-01 14:48 ` Peter Tyser
2009-04-01 15:03 ` Jens Gehrlein [this message]
2009-04-01 9:42 ` [U-Boot] ppc: using d-cache for C stack and as cache at the same time? Jens Gehrlein
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