RE: [ECOS] about porting ecos in S3C4510B development board

["Hu Ying" <ying_hu at alliedtelesyn dot com>]

Hi Jonathan,

   Thanks for your help.Now Redboot is working.

    I followed the example on provided in the book "Embedded software
development with eCos", by Anthony J.Massa, P.300

But when I tried to load file using Redboot, I got the following error
message:

 Copyright (C) 2000, 2001, 2002, Red Hat, Inc.

RAM: 0x00000000-0x02000000, 0x00024628-0x02000000 available
RedBoot> load -v -m ymodem
*** Abort! Attempt to load S-record to address: 0x00020000, which is not in
RAM
xyzModem - CRC mode, 1(SOH)/1(STX)/0(CAN) packets, 3 retries

what does cause this problem?

Thanks

Hu Ying


-----Original Message-----
From: Jonathan Larmour [mailto:jifl@eCosCentric.com]
Sent: Thursday, February 12, 2004 9:55 AM
To: ying_hu@alliedtelesyn.com
Subject: Re: [ECOS] about porting ecos in S3C4510B development board


Hu Ying wrote:
> Hi Jonathan,
>
>     I understand what you mean by "Worry about the flash only when you've
> got the basic board port brought up. "
> But the board I am using is not the original SNDS100 board, and it just
> contains the FLASH. No other ROM.

Oh sorry, it's socketed flash with no BDM etc. to set up the SDRAM for
loading to RAM? I see what you mean.

> I put the redboot.bin file to the FLASH, starting from 0x0.
>
>     So I think even the Redboot should contain the driver for the FLASH,
am
> I right?

RedBoot doesn't need the driver for flash unless you want it to be able to
reprogram the flash itself. That's what I meant by worrying about the flash
later. It will obviously need to set up any bus configuration etc. to
_access_ the flash. But a flash driver for reprogramming can be done
slightly later.

Jifl

> -----Original Message-----
> From: ecos-discuss-owner@ecos.sourceware.org
> [mailto:ecos-discuss-owner@ecos.sourceware.org]On Behalf Of Jonathan
Larmour
> Sent: Wednesday, February 11, 2004 9:49 PM
> To: ying_hu@alliedtelesyn.com
> Cc: ecos-discuss@sources.redhat.com
> Subject: Re: [ECOS] about porting ecos in S3C4510B development board
>
>
> Hu Ying wrote:
> [snip]>
>
>>After these I build the Redboot using eCos configuration tool.
>>
>>Forgot to tell you that the data-bus width for the FLASH and SDRAM are all
>>16-bit wide. I think this is different from the SNDS board, where could I
>>change the data-bus width? in the hal_platform_setup.h?
>
>
> Almost certainly. hal_platform_setup.h contains most of the board-specific
> parts of an ARM port so you should go through every single line of that
> file. Certainly it has a comment:
>          /* Flash is 16 bit, everything else 32 bit */
>
>
>
>>How could I make the Redboot support AM29LV160 FLASH? Does it support
>
> SDRAM?
>
> Worry about the flash only when you've got the basic board port brought
up.
> SDRAM should be set up in hal_platform_setup.h depending on what's needed.
> You can have a look at other ports depending on what you need to do e.g.
if
> you have to configure the SDRAM from the SPD data, or you may have fixed
> SDRAM and no SPD.
>
> Jifl
> --
> eCosCentric    http://www.eCosCentric.com/    The eCos and RedBoot experts
> Visit us at Embedded World 2004, Nürnberg, Germany, 17-19 Feb, Stand
12-449
> --["No sense being pessimistic, it wouldn't work anyway"]-- Opinions==mine
>
>
> --
> Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
> and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss


--
eCosCentric    http://www.eCosCentric.com/    The eCos and RedBoot experts
Visit us at Embedded World 2004, Nürnberg, Germany, 17-19 Feb, Stand 12-449
--["No sense being pessimistic, it wouldn't work anyway"]-- Opinions==mine


-- 
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss