[U-Boot-Users] Re: A question of tftpboot

Wolfgang Denk wd at denx.de
Wed Jul 7 23:33:05 CEST 2004

In message <BAY2-F1Ifd4nI8aOwxu000027d2 at hotmail.com> you wrote:
> I am using tftpboot to download the uImage. But I found if I use
> tftpboot 10000 uImage
> The image can be downloaded with no problem. But if I use
> tftpboot 1000 uImage
> Then it shows me execeptions as below:

This is only to be expected. U-Boot follows UNIX design rules:

"UNIX was not designed to stop you from doing stupid things,  because
that would also stop you from doing clever things."       - Doug Gwyn

> I checked the document but nothing mentioned about the load address of 
> tftpboot. My question is, why I can download the image to 10000 while 
> downloading to 1000 doesn't work?

Read the documentation again. See for example section "Memory Manage-
ment" in the README which explains pretty clear why  overwriting  the
memory  between  0x0000...0x2000  is  NOT a good idea while U-Boot is

Best regards,

Wolfgang Denk

Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at denx.de
Earth -- mother of the most beautiful women in the universe.
	-- Apollo, "Who Mourns for Adonais?" stardate 3468.1

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