Re: [ECOS] [Redboot] SDRAM size and ixp425

[Andrew Lunn <andrew at lunn dot ch>]

On Thu, Mar 03, 2005 at 06:37:50PM +0800, David Lu wrote:
> Thank your for your reply.
> 
> But in the ixdp425.h Line 80: #define IXP425_SDRAM_CONFIG_INIT 
> (SDRAM_CONFIG_CAS_3 | SDRAM_CONFIG_2x8Mx16)
> 
> in Hal_ixp425.h
> // SDRAM_CONFIG bits
> #define SDRAM_CONFIG_2x8Mx16       0
> #define SDRAM_CONFIG_4x8Mx16       1
> #define SDRAM_CONFIG_2x16Mx16      2
> #define SDRAM_CONFIG_4x16Mx16      3
> #define SDRAM_CONFIG_2x32Mx16      4
> #define SDRAM_CONFIG_4x32Mx16      5
> 
> It seems that it does not support 1x4Mx32. But in the h/w design in the 
> Intel's document, the 1x4Mx32 can be supported.

I presume the manual also tells you what values you need to write to
the registers? If so then i suggest you simply add the needed
definitions and then change IXP425_SDRAM_CONFIG_INIT to use the new
ones.

        Andrew

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