[U-Boot-Users] memory probe

Wolfgang Denk
2005-05-11T18:44:01Z

In message <aa56107905050919099b9b06b@mail.gmail.com> you wrote:
>
> We are planning to use uboot on our system and wanted to know if
> u-boot can probe the memory installed on the system automatically and
> pass the correct mem size to linux kernel ?

Yes, it can. Actually this is the default behaviour.

Ummm... why didn't you have a look at the mailing list arcive instead
of posting?

> Way I could understand it was that the mem size and offset had to be
> compile time #define'ed ..

Wrong.

> what if we want same image to work on 2 different memory configuration
> hardware ?

Just do it. It is up to you how you implement support for your board.

> how does the memory probe work on PC etc ? bootloaders use BIOS Calls ?

BIOS? That's a different world. Wrong list.

> how can I do this on my ixdp425 plattform ?

Have a look at common/memsize.c and how it's used on other boards.

Best regards,

Wolfgang Denk

--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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