[U-Boot-Users] SDRAM

[U-Boot-Users] SDRAM

[Måns Brorsson]

Hi!
I'm trying to port u-boot to an APEX board from ALTERA, i'm have been
looking in to Alteras Cyclone board which is a newer and bigger board. My
problem is that i dont have any SDRAM as the cyclone board has. And in
theier .h files they say that you have to have a SDRAM. But this should be
possible to come around, is it not?

Thanks/M?ns

--
M?ns Brorsson
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[U-Boot-Users] SDRAM

[Wolfgang Denk]

In message <9e45f2180601310508xda30d92t4113bcb73d836d25@mail.gmail.com> you wrote:
>
> I'm trying to port u-boot to an APEX board from ALTERA, i'm have been
> looking in to Alteras Cyclone board which is a newer and bigger board. My
> problem is that i dont have any SDRAM as the cyclone board has. And in

But you do have some RAM memory on your board, right? Which type, and
how much is this?

> Content-Type: text/html; charset=ISO-8859-1
> Content-Transfer-Encoding: quoted-printable
> Content-Disposition: inline

Never post HTML here! Never!

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
Applying computer technology is simply finding the  right  wrench  to
pound in the correct screw.

[U-Boot-Users] SDRAM

[Måns Brorsson]

Ok i hope i turned the irritating HTML of, now!

The thing i missed is which cfg_ the U-Boot has to have. Should i put
my sram address as CFG_SDRAM_BASE and underline CFG_SRAM_BASE?

--
M?ns Brorsson

[U-Boot-Users] SDRAM

[Wolfgang Denk]

In message <9e45f2180601310654x4c786877ma82c04368e2002af@mail.gmail.com> you wrote:
> Ok i hope i turned the irritating HTML of, now!

Yes, thanks!

> The thing i missed is which cfg_ the U-Boot has to have. Should i put
> my sram address as CFG_SDRAM_BASE and underline CFG_SRAM_BASE?

CFG_SRAM_BASE is not really used anywhere in U-Boot; it's just passed
to the Linux kernel on some boards.

CFG_SDRAM_BASE is more important.

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
Research is what I'm doing when I don't know what I'm doing.
                                                 -- Wernher von Braun

[U-Boot-Users] SDRAM

[Scott McNutt]

Hi Mans,

> The thing i missed is which cfg_ the U-Boot has to have. Should i put
> my sram address as CFG_SDRAM_BASE and underline CFG_SRAM_BASE?

I'm assuming you're using Nios II ... in which case the code doesn't
really care about SDRAM ... since the SDRAM controller is configured
when you create the Nios II system module, not a run time. So yes,
you can set CFG_SDRAM_BASE to point to your SRAM base address. And
just set CFG_SRAM_BASE/SIZE to zero.

Also, there are several patches for the Nios II code that haven't
made it into the source tree yet -- if you run into problems, just
let me know & I'll send you the patches directly.

Regards,
--Scott