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Re: [Redboot] SDRAM size and ixp425
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.
How can redboot support it?
----- Original Message -----
From: "Andrew Lunn" <andrew@lunn.ch>
To: "David Lu" <davidlu.david@gmail.com>
Cc: <ecos-discuss@sources.redhat.com>
Sent: Thursday, March 03, 2005 4:14 PM
Subject: Re: [ECOS] [Redboot] SDRAM size and ixp425
On Thu, Mar 03, 2005 at 11:52:14AM +0800, David Lu wrote:
Hello everyone,
I'm using the redboot as the bootloader for ixp425 and one-chip
16MB(4Mx32)
SDRAM on the board. But when I wanted to download the redboot to the
board,
I found that it seemed the redboot may not support the SDRAM.
Does anyone have the idea about this item? How to modify the source codes
to support this?
You probably need to modify the MMU setup for your board and the
linker scripts. Take a look at the _misc.c for your HAL and the
mlt_*.{ldi|h} files.
Andrew
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