[U-Boot] [MPC8272ADS/BDI2000]Can not program my u-boot into Flash

Jean-Michel Hautbois
2009-01-19T19:29:31Z

2009/1/19 Jerry Van Baren <gerald.vanbaren@ge.com>:
> Jean-Michel Hautbois wrote:
>
> [snip]
>
>> The error in programming tells that it couldn't write the second byte
>> of the u-boot file. Indeed, I have displayed the memory before and
>> after the prog command, and the first byte is correctly written.
>> I can't understand where my problem is.
>>
>> Thx and Regards,
>> JM
>
> Hi JM,

Hi Jerry, thx for answering

> After you erase the sector/chip, is it all 0xFF (especially the second
> location)? (I expect it is, but it is good to start with the fundamentals.)

No, it is not. I would say, the first byte is OK (I don't have the
board with me right now).

> If so, I would speculate your flash chip configuration isn't right. You
> need to know how your hardware is wired:
> * How many chips in parallel on the bus?
> * Bus width on each chip?
> * Bus width into the processor?

The Flash chip is a SIMM with 4 LH28F016SCT chips.
When I try to use a 32 bits wide bus, it does not work.

JM