Christian:
It looks like you have your memory controller (BRx/ORx) configured for 32 bits but your actual memory width is 16 bits so the processor is reading 32 bits on every bus cycle, half of which are garbage.
gvb
-----Original Message----- From: u-boot-users-admin@lists.sourceforge.net [mailto:u-boot-users-admin@lists.sourceforge.net]On Behalf Of CG Sent: Thursday, May 27, 2004 2:46 PM To: Wolfgang Denk Cc: u-boot-users@lists.sourceforge.net Subject: Re: [U-Boot-Users] flash erase
I use only one 16-bit flash device. Also, I wrote some data in different flash area and it works partially.
I can execute these command : cp.b 2000000 10000000 2 => It copies 2 byte (data = 0x0006) at 0x10000000 it seems to work cp.b 2000000 10000002 2 => It copies 2 byte at 0x10000002 cp.b 2000000 10000004 2 => It copies 2 byte at 0x10000004, I got problem sometimes... it writes only 0x0002 instead of 0x0006
If I type this command: cp.b 2000000 10000000 4 => I got problem as I said in my previous e-mail
Copy to Flash... not erased at 10000002 (0)
You can see the memory content: 10000000: ffff0006 ffffff10 ffff0430 fffffd30
The only problem that I can see now is the home-made PCB that I use to test the memory flash with the dev. board. In fact, I use 56 long wires to connect each IO from the "flash pcb" to the dev. board. It's maybe why the communication is unstable. But I hope that it's the only problem.
Regards
Christian
----- Original Message ----- From: "Wolfgang Denk" wd@denx.de To: "CG" christian@mcdi.com Cc: "Stephan Linz" linz@mazet.de; u-boot-users@lists.sourceforge.net Sent: Thursday, May 27, 2004 2:10 PM Subject: Re: [U-Boot-Users] flash erase
In message 052401c443f1$218d1550$6b01a8c0@cc you wrote:
Do you have an example to know how to erase the flash
28F128J3 from INTEL?
This has little to do with which chip is being used, but
more with
how your board is organized, i. e. bus width and how many
chips are
used to form a bank. I think you use 2 chips in 16 bit mode
to form a
32 bit wide bank. This must be implemented in the driver.
I use 16-bit data width, CS0. I would like to use this
flash in order to
store u-boot and applications (linux and ramdisk).
Are you really sure? To me it looks more as if there ware 2
x 16 bit
devices on a 32 bit wide bus.
Best regards,
Wolfgang Denk
-- Software Engineering: Embedded and Realtime Systems,
Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email:
wd@denx.de
Sorry, but my karma just ran over your dogma.
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I don't tkink that the AT91RM9200 supports 32-bits data width. The SMC interface supports only 8 or 16-bit data width.It's what I read from the data sheet.
I hope to find the real problem soon.
Thanks a lot
Christian
----- Original Message ----- From: "VanBaren, Gerald (AGRE)" Gerald.VanBaren@smiths-aerospace.com To: u-boot-users@lists.sourceforge.net Sent: Thursday, May 27, 2004 3:13 PM Subject: RE: [U-Boot-Users] flash erase
Christian:
It looks like you have your memory controller (BRx/ORx) configured for 32
bits but your actual memory width is 16 bits so the processor is reading 32 bits on every bus cycle, half of which are garbage.
gvb
-----Original Message----- From: u-boot-users-admin@lists.sourceforge.net [mailto:u-boot-users-admin@lists.sourceforge.net]On Behalf Of CG Sent: Thursday, May 27, 2004 2:46 PM To: Wolfgang Denk Cc: u-boot-users@lists.sourceforge.net Subject: Re: [U-Boot-Users] flash erase
I use only one 16-bit flash device. Also, I wrote some data in different flash area and it works partially.
I can execute these command : cp.b 2000000 10000000 2 => It copies 2 byte (data = 0x0006) at 0x10000000 it seems to work cp.b 2000000 10000002 2 => It copies 2 byte at 0x10000002 cp.b 2000000 10000004 2 => It copies 2 byte at 0x10000004, I got problem sometimes... it writes only 0x0002 instead of 0x0006
If I type this command: cp.b 2000000 10000000 4 => I got problem as I said in my previous e-mail
Copy to Flash... not erased at 10000002 (0)
You can see the memory content: 10000000: ffff0006 ffffff10 ffff0430 fffffd30
The only problem that I can see now is the home-made PCB that I use to test the memory flash with the dev. board. In fact, I use 56 long wires to connect each IO from the "flash pcb" to the dev. board. It's maybe why the communication is unstable. But I hope that it's the only problem.
Regards
Christian
----- Original Message ----- From: "Wolfgang Denk" wd@denx.de To: "CG" christian@mcdi.com Cc: "Stephan Linz" linz@mazet.de; u-boot-users@lists.sourceforge.net Sent: Thursday, May 27, 2004 2:10 PM Subject: Re: [U-Boot-Users] flash erase
In message 052401c443f1$218d1550$6b01a8c0@cc you wrote:
Do you have an example to know how to erase the flash
28F128J3 from INTEL?
This has little to do with which chip is being used, but
more with
how your board is organized, i. e. bus width and how many
chips are
used to form a bank. I think you use 2 chips in 16 bit mode
to form a
32 bit wide bank. This must be implemented in the driver.
I use 16-bit data width, CS0. I would like to use this
flash in order to
store u-boot and applications (linux and ramdisk).
Are you really sure? To me it looks more as if there ware 2
x 16 bit
devices on a 32 bit wide bus.
Best regards,
Wolfgang Denk
-- Software Engineering: Embedded and Realtime Systems,
Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email:
wd@denx.de
Sorry, but my karma just ran over your dogma.
This SF.Net email is sponsored by: Oracle 10g Get certified on the hottest thing ever to hit the market... Oracle 10g. Take an Oracle 10g class now, and we'll give you the exam FREE. http://ads.osdn.com/?ad_id=3149&alloc_id=8166&op=click _______________________________________________ U-Boot-Users mailing list U-Boot-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/u-boot-users
The information contained in, or attached to, this e-mail, may contain
confidential information and is intended solely for the use of the individual or entity to whom they are addressed and may be subject to legal privilege. If you have received this e-mail in error you should notify the sender immediately by reply e-mail, delete the message from your system and notify your system manager. Please do not copy it for any purpose, or disclose its contents to any other person. The views or opinions presented in this e-mail are solely those of the author and do not necessarily represent those of the company. The recipient should check this e-mail and any attachments for the presence of viruses. The company accepts no liability for any damage caused, directly or indirectly, by any virus transmitted in this email.
This SF.Net email is sponsored by: Oracle 10g Get certified on the hottest thing ever to hit the market... Oracle 10g. Take an Oracle 10g class now, and we'll give you the exam FREE. http://ads.osdn.com/?ad_id149&alloc_id%C2%8166&op%C3%8Ck _______________________________________________ U-Boot-Users mailing list U-Boot-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/u-boot-users
participants (2)
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CG -
VanBaren, Gerald (AGRE)