[U-Boot-Users] Re: Help: Device protect error

[U-Boot-Users] Re: Help: Device protect error

[王 振]

hi wd,

  I think I hadn't explained my situation clearly in my last post. 
  I did copy board/pleb2/flash.c as my board's flash.c because this file 
provided flash driver for Intel 28F320C3B flash memory and created a 
configuration header file for my board. I don't know whether this could be 
called 'adapt the flash driver' but in the end I could see u-boot's output 
in minicom and the flash memory was correctly recognized. Now the problem 
is that 'erase' command doesn't work, I do need some precious hints about 
how to solve it. 
  Besides, I wonder if cfi_flash.c can drive Intel 28F320C3B on my board 
because there is no CFI on my board.

Best regard,

Zhen Wang

>From: Wolfgang Denk <wd@denx.de>
>To: ? ? <mailtojarod@hotmail.com>
>CC: u-boot-users at lists.sourceforge.net
>Subject: Re: [U-Boot-Users] Help: Device protect error 
>Date: Tue, 08 Nov 2005 09:04:11 +0100
>
>In message <BAY24-F56A5E51FFD0614E46EED4AF640@phx.gbl> you wrote:
> >
> > I checked the last 8KB with "md 003FE000" and I found former data 
remained
> > other than FFFFs. Erasing just didn't work correctly. I wonder what's 
the
> > problem and shall I revise the flash.c in my board's folder.
>
>You seem to be using  a  board-specific  flash  driver.  Is  there  a
>special reason for not using the cfi_flash driver?
>
>And do you think the error will go away if you do not adapt the flash
>driver to your hardware?
>
>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
>Be careful what you wish for. You never know who will be listening.
>                                       - Terry Pratchett, _Soul Music_

_________________________________________________________________
???? MSN Explorer:   http://explorer.msn.com/lccn  

[U-Boot-Users] Re: Help: Device protect error

[Wolfgang Denk]

In message <BAY24-F25B0A140CC305D95B57396AF640@phx.gbl> you wrote:
> 
>   I did copy board/pleb2/flash.c as my board's flash.c because this file 
> provided flash driver for Intel 28F320C3B flash memory and created a 
> configuration header file for my board. I don't know whether this could be 
> called 'adapt the flash driver' but in the end I could see u-boot's output 

No, this is usually not sufficient. For example, are  you  absolutely
sure that your hardware uses the same bus width?

> in minicom and the flash memory was correctly recognized. Now the problem 
> is that 'erase' command doesn't work, I do need some precious hints about 
> how to solve it. 

debug the flash driver. If you decide to use a special driver  it  is
your responsibility to make it work on your hardware.

>   Besides, I wonder if cfi_flash.c can drive Intel 28F320C3B on my board 
> because there is no CFI on my board.

??

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
Systems programmers are the high priests of a low cult.
                                                       -- R.S. Barton

[U-Boot-Users] Re: Help: Device protect error

[Tolunay Orkun]

Wolfgang,

Wolfgang Denk wrote:
>>  Besides, I wonder if cfi_flash.c can drive Intel 28F320C3B on my board 
>>because there is no CFI on my board.
> 
> 
> ??

I think he thinks 'CFI' is a brand like Intel, AMD etc. :)

However, using the CFI flash driver might not solve the problem alone 
without proposed patches are done and applied to deal with flash chips 
that come all sectors locked on power on.

According to the product briefing, this flash comes up with all sectors 
locked up initially so this is also probably why his custom flash driver 
is also failing the erase attempts (provided that everything else is 
correct).

http://www.intel.com/design/flcomp/prodbref/pdfs/298188.pdf

Best regards,
Tolunay

Note: Insert usual reminder for pending patches to cfi_flash.c :)

[U-Boot-Users] Re: Help: Device protect error

[Wang Zhen]

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[U-Boot-Users] RE: Help: Device protect error

[Zhen Wang]

Hi wd,

 I wrote in my last post:
 I found that I misunderstood the abbreviation 'cfi' as 'Compact Flash 
Interface' after I checked out cfi_flash.c. I will try to drive my flash 
memory with it tonight. Thanks a lot.
 And sorry for sent it to the list in HTML format, so I decide to use 
this gmail email account instead.
 Now I can erase the 28F320C3B correctly with cfi_flash.c included. 
Thank you very much.
 I meant to boot a compressed uClinux zImage with u-boot. And I saw 
someone else had succeeded in booting zImage by configuring bootcmd as 
'tftpboot\; go 0x0c480000', but I wonder how to configure the tftp 
download file name i.e. zImage and tftp download address i.e. 
0x0c480000(SDRAM address).
  Any hints would be appreciated.

Best regards,
Zhen Wang

[U-Boot-Users] RE: Help: Device protect error

[Wolfgang Denk]

In message <43728BD5.8040306@gmail.com> you wrote:
> 
> 'tftpboot\; go 0x0c480000', but I wonder how to configure the tftp 
> download file name i.e. zImage and tftp download address i.e. 
> 0x0c480000(SDRAM address).
>   Any hints would be appreciated.

I suggest you start reading the manual?

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
In any group of employed individuals the only naturally  early  riser
is  _always_  the office manager, who will _always_ leave reproachful
little notes ... on the desks of their subordinates.
                                - Terry Pratchett, _Lords and Ladies_