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RE: FW: IXDP425 SDRAM CONFIG & Linux ATAGS


 For all. (since RAM is needed for any configuration)

> -----Original Message-----
> From: Dave [mailto:dave@cc0.net] 
> Sent: Wednesday, September 14, 2005 7:24 PM
> To: ??????????? ????? ???????????; ecos-discuss@sources.redhat.com
> Subject: Re: [ECOS] FW: [ECOS] IXDP425 SDRAM CONFIG & Linux ATAGS
> 
> 
> 
> Isn't that for a RAM or ROMRAM RedBoot and not a ROM RedBoot?
> 
> 
> 
> Thanks!
> 
> 
> -Dave
> 
> 
> 
> 
> -----Original Message-----
> From: ??????????? ????? ???????????
> Sent: Wednesday, September 14, 2005 4:46 PM
> To: 'Dave'
> Subject: RE: [ECOS] IXDP425 SDRAM CONFIG & Linux ATAGS
> 
> packages\hal\arm\xscale\ixdp425\current\include\pkgconf\mlt_ar
> m_xscale_ixdp425_ram.h
> 
> #define CYGMEM_REGION_ram (0)
> #define CYGMEM_REGION_ram_SIZE (0x10000000)
> 
> > -----Original Message-----
> > From: ecos-discuss-owner@ecos.sourceware.org
> > [mailto:ecos-discuss-owner@ecos.sourceware.org] On Behalf Of Dave
> > Sent: Wednesday, September 14, 2005 9:20 AM
> > To: ecos-discuss@sources.redhat.com
> > Subject: [ECOS] IXDP425 SDRAM CONFIG & Linux ATAGS
> >
> > Hello all,
> >
> > I am working on a custom IXP425 board which is wired identical to an
> > IXDP425 except using different flash and SDRAM sizes/configs.
> >
> > I am running into an interesting problem regarding passing of ATAG 
> > values from RedBoot to a Linux kernel (2.4.27) and was 
> hoping someone 
> > might have some insight and pointers on where to look. I 
> have reviewed 
> > the several similar messages on the ecos-discuss mailing list 
> > regarding SDRAM config on IXP boards but nothing that 
> helped with my 
> > issue. I have also been googling a bit to no avail.
> >
> > One of our boards is a 64MB SDRAM board and when using RedBoot 2.01 
> > and setting SDRAM size appropriately and SDRAM_CONFIG_2x16Mx16, etc 
> > all seems well. ATAGs are passed correctly from RB to the 
> kernel, in 
> > particular ATAG_CMDLINE gets passed correctly via exec -c 
> ""...and the 
> > kernel picks it up just fine.
> >
> > A new board is a 32MB SDRAM board and using same RB 2.01 except 
> > changing SDRAM size and SDRAM_CONFIG_2x8Mx16, etc to 
> reflect the 32MB 
> > layout. This board boots fine and most all seems ok however 
> ATAGs are 
> > not being passed down to the kernel. Specifically 
> ATAG_CMDLINE is not 
> > being recognized and I would presume the others are not as well.
> >
> > I suspect I am missing something that needs to be modified 
> in RB with 
> > regard to the SDRAM changes between boards however I cannot locate 
> > anything that I may be missing. I have read that 
> hal_platform_extras.
> > needs to be fixed up for SDRAM changes however it has 
> apparently been 
> > replaced with hal_platform_setup.h and it seems it uses all macros 
> > from ixdp425.h thus leading me to believe no change is needed.
> >
> > Anyone have any ideas on what I may be missing?
> >
> >
> > Thanks!
> >
> > -Dave
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > --
> > Before posting, please read the FAQ:
> > http://ecos.sourceware.org/fom/ecos
> > and search the list archive:
> > http://ecos.sourceware.org/ml/ecos-discuss
> >
> >
> 
> --
> Before posting, please read the FAQ: 
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> 
> 
> 

--
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