[U-Boot-Users] cfi_flash.c

[U-Boot-Users] cfi_flash.c

[Tolunay Orkun]

We are using this driver with CSB272 and CSB472 (both PPC405 
based boards).

The driver works OK on CSB272 where flash is setup as 2 side-by-
side chips each x16 and accessed via a 32 bit CS.

However, on CSB472 we have some apparently minor issue 
somewhere. The flash is setup as 1 chip of x16 and accessed via a 
16 bit chip select. The protect on/off, erase commands work well. cp 
command also work OK but after the flash write is completed it 
leaves the flash array in command mode instead of returning to 
read mode.

The workaround for now is to reset the board after programming or 
issue a protect on/off command.

The flash chip is an Intel 28F640 and I've sync to U-Boot CVS last 
monday.

Has anyone seen this problem, made a patch? I've posted about 
this before a few months ago but there was more pressing issues to 
deal with. If someone has solved this problem and a patch is in 
pipeline, I would like to try it otherwise I need to get my hands dirty 
to find out why the array is left in command mode.

Best regards,
Tolunay

[U-Boot-Users] cfi_flash.c

[claudio123]

I am looking for a flash driver that would work with both the new flash part
(J3D)supported by cfi_flash.c and the old flash (28F256J3C), or better yet a
driver that would support the flash parts supported by new cfi_flash .c  as
well as the old parts supported by flash.c and flash64.c
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[U-Boot-Users] cfi_flash.c

[Wolfgang Denk]

In message <3176526.post@talk.nabble.com> you wrote:
> 
> I am looking for a flash driver that would work with both the new flash part
> (J3D)supported by cfi_flash.c and the old flash (28F256J3C), or better yet a
> driver that would support the flash parts supported by new cfi_flash .c  as
> well as the old parts supported by flash.c and flash64.c

You should be a bit more specific. Which "flash.c"? There are  nearly
200 files by that name in the U-Boot tree!

In general, you should use the CFI driver and fix any problems /  add
any code that might be missing there.

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
They weren't that important. They were merely at the top. The  people
who  really  run organizations are usually found several levels down,
where it's still possible to get things done.
                                      - Terry Pratchett, _Small Gods_

[U-Boot-Users] cfi_flash.c

[Spinelli, Claudio]

 Hi Wolfgang,

Yes, I should have been more specific. 
How do you find out if a flash is compatible with CFI interface? 
I have:
 AMD AM29F040
 28F256J3C

Do you know if the above flashes are compatible with CFI?
Thanks

Claudio

-----Original Message-----
From: wd@denx.de
To: claudio123
Cc: u-boot-users at lists.sourceforge.net
Sent: 3/1/06 2:54 AM
Subject: Re: [U-Boot-Users] cfi_flash.c 

In message <3176526.post@talk.nabble.com> you wrote:
> 
> I am looking for a flash driver that would work with both the new
flash part
> (J3D)supported by cfi_flash.c and the old flash (28F256J3C), or better
yet a
> driver that would support the flash parts supported by new cfi_flash
.c  as
> well as the old parts supported by flash.c and flash64.c

You should be a bit more specific. Which "flash.c"? There are  nearly
200 files by that name in the U-Boot tree!

In general, you should use the CFI driver and fix any problems /  add
any code that might be missing there.

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
They weren't that important. They were merely at the top. The  people
who  really  run organizations are usually found several levels down,
where it's still possible to get things done.
                                      - Terry Pratchett, _Small Gods_

[U-Boot-Users] cfi_flash.c

[Wolfgang Denk]

In message <E4BB443436F22D4AB9E84B06AB7C4CE013C75E81@nj7460exch004u.ho.lucent.com> you wrote:
> 
> How do you find out if a flash is compatible with CFI interface? 

Look it up in the data sheet.

> Do you know if the above flashes are compatible with CFI?

Yes.

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
You don't have to worry about me. I might have been born yesterday...
but I stayed up all night.

[U-Boot-Users] cfi_flash.c

[Yuli Barcohen]

>>>>> Claudio Spinelli writes:

    Claudio> Yes, I should have been more specific. How do you find out
    Claudio> if a flash is compatible with CFI interface?

By reading the data sheets which are available for free at the
manufacturers' sites.

    Claudio> I have:

    Claudio> AMD AM29F040

Old AMD, not CFI-compatible.

    Claudio> 28F256J3C

Intel StrataFlash, CFI-compatible.

    Claudio> Do you know if the above flashes are compatible with CFI?

-- 
========================================================================
 Yuli Barcohen       | Phone +972-9-765-1788 |  Software Project Leader
 yuli at arabellasw.com | Fax   +972-9-765-7494 | Arabella Software, Israel
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