Hi Sascha,
> >
> > The Nand port to imx27ads is booting when I use a Samsung device (128MiB,
> 3.3V, 8-bit, 512page).
>
> Great! Care to send patches? That would help answering further questions
> as well..
Sorry, I know its a basic question but how do I make a patch file? Else I can
send you the file I modified.
> > Now my requirement is to boot from a Micron device (256MiB, 3.3V, 8-bit, 2k
> page). Part num: MT29F2G08AAD
> >
> > I modified the line in imx27ads.c to
> >
> > imx_nand_load_image((void *)TEXT_BASE, 256 * 1024, 2048, (2048 * 64));
> //256MB, 2K
>
> I don't know your NAND chip, so I can't say anything about the block
> size, but otherwiese it looks correct.
Thanks. I have verified that the block size is correct.
> Can you access the NAND device? Before trying to boot from the device
> should make sure that it works using normal U-Boot commands.
The only command related to the nand flash when I type help is "nand". Could
you please tell me some commands to read and write the nand that would work
from the uboot prompt? Where could I find more info on this?
> > But once I program the uboot image to the micron flash, nothing seems to
> appear on the UART. I am using the Ronetix PEEDI JTAG programmer.
> >
> > 1. Is there anything/anywhere else I should modify the uboot code for the
> micron nand flash to boot?
>
> I think not, but then again, it would work, right?
I went through the code and could find only this to be modified. I am worried
weather there are any timing related differences between the samsung and the
micron.
>
> > 2. How can I reduce the frequency of operation through uboot?
>
> No.
You mean the frequency cannot be reduced?
> > 3. If I do single stepping, it seems that the first 2k data is being copied
> successfully from the SRAM to the DDR. But if I execute/give a "go" nothing
> appears on the UART, but PC=0x00000004.
>
> Place a breakpoint after the first 2k are copied and single step
> further.
It looks if I single step all the 2K bytes are copied to DDR. But if I just
execute, in the 2K everything copies except the first 512bytes.
Regards,
Tiju
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