[U-Boot-Users] U-Boot on LH7A400

[U-Boot-Users] U-Boot on LH7A400

[Devraj Mukherjee]

Hi there,

Is anyone out there using a Sharp LH7A400 (http://logicpd.com) and
UBoot. We are new to getting Linux working on this board and are
wonderng which boot loader to use.

UBoot seems to be the choice :-) if anyone of you are using UBoot on
these boards, can you please send us an image of the bootloader so we
can give it a shot.

Any other resources are welcome, thanks for your time

Devraj


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[U-Boot-Users] U-Boot on LH7A400

[Wolfgang Denk]

In message <1084503350.13053.63.camel@localhost> you wrote:
> 
> Is anyone out there using a Sharp LH7A400 (http://logicpd.com) and
> UBoot. We are new to getting Linux working on this board and are
> wonderng which boot loader to use.

Patches were posted to the list 3 days ago. Search the archives.


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
Boykottiert Microsoft - Kauft Eure Fenster bei OBI!

[U-Boot-Users] A question about sdram_init

[Stefan Roese]

Hello Frank!

> Sorry, wrong function name. I've corrected in the second 
> post. The problem 
> happens in cpu/ppc4xx/sdram.c -> sdram_init().

OK. I wrote this code, so here a few comments.

We are using this code on a least 10 different PPC405 boards without any
problems (even with 4 Mbytes of SDRAM).

When you stripped the code to 3 lines only you probably missed those
lines:

	...
	mtsdram0(mem_sdtr1, sdtr1);
	mtsdram0(mem_rtr, rtr);

Some of the sdram regs don't get initialized at all with your code! This
could cause serious problems!

Some further questions:

Why did you change the code in the first place? 

You speak of 8MBytes of SDRAM. Do you have 2 banks each 4MByte? This
code only supports the first bank.

Best regards,
Stefan Roese