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Re: what is FLYCNFG on XScale?
- From: Andrew Lunn <andrew dot lunn at ascom dot ch>
- To: Holger Schurig <h dot schurig at mn-logistik dot de>
- Cc: ecos-discuss at sources dot redhat dot com
- Date: Fri, 11 Oct 2002 13:29:51 +0200
- Subject: Re: [ECOS] what is FLYCNFG on XScale?
- References: <200210111228.16430.h.schurig@mn-logistik.de>
www.google.de found two hits: The second one gives a little more
information:
http://www.google.de/search?q=cache:KXurMyuUqBUC:www.intel.com/design/pca/applicationsprocessors/manuals/27850701.pdf+FLYCNFG&hl=de&ie=UTF-8
FLYCNFG: Fly by DMA DVAL assert and deassert times.
Page 47
Andrew
On Fri, Oct 11, 2002 at 12:28:16PM +0200, Holger Schurig wrote:
> Hi everybody !
>
> Does anybody know what FLYCNFG is?
>
> In the "Intel PXA250 and PXA210 Application Processor Operating System
> Developer's Guide" from February 2002 it says in Chapter 10, Point 2.
>
> a. Write MSC0, MSC1, MSC2
>
> b. Write MECR, MCMEM0...
>
> c. Write FLYCNFG
>
> But the "Intel PXA250 and PXA210 Application Processor Developer's Manual"
> from February 2000 does not contain the string FLYCNFG.
>
> The only reference that I found was in eCos (Redboot), in
> hal/arm/xscale/lubbock/current/include/hal_platform_setup.h
>
> #define FLYCNFG_OFFSET 0x20
>
> and boards/cradle/memsetup.S
>
> @ Step 2c
> @ fly-by-dma is defeatured on this part
> @ write flycnfg
> @ldr r2, =CFG_FLYCNFG_VAL
> @str r2, [r1, #FLYCNFG_OFFSET]
>
> ...
> .set FLYCNFG_VAL , 0x01FE01FE @ Fly-by-DMA config. reg - NOT
> USED
>
>
>
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