enclosed is one from my fads based board; it supports 1x8, 2x8, 4x8, 1x16 and 2x16 (but 4x8 and 2x8 are untested)
i know this isn't a real patch, just an example of what we do here.
On Wed, Jan 14, 2004 at 12:09:57PM -0600, listmember@orkun.us wrote:
Hmm, interesting. I used one of the strataflash.c from one of the boards. I do not know which one right now. It did not seem to identify the flash properly. When it did not work and I took another flash.c that uses BCS, tweaked it and added flash_real_protect support myself.
I would prefer using CFI driver since it also does buffered flash writes and if manufacturer changes the flash chips in some revision it would most likely not break board support.
Which one do you recommend me to try? This is another reason why CFI drivers should be unified. When I worked with one I tought they were probably copies of the same source.
Best regards, Tolunay
That seems odd since I have it running on 2x16 in parallel and 2x16 in serial here. How did it fail in your setup?
-----Original Message----- From: listmember@orkun.us [mailto:listmember@orkun.us] Sent: Wednesday, January 14, 2004 11:40 AM To: Brad Kemp Cc: Stefan Roese; Wolfgang Denk; rune.raknerud@cargoscan.com; u-boot-users@lists.sourceforge.net Subject: RE: [U-Boot-Users] Intel Strataflash in 8-bit mode
Brad,
Unfortunately, I don't have 8 bit strataflash. I can't help there.
I looked at your driver for Cogent CSB272 board intially but it does not seem to support 2x 16-bit strataflash on a 32bit bus either.
I can help you with the driver to add such support as well. I agree a unified flash driver that is capable of handling various bus and port widths is probably a good thing. Few boards if any have odd ball configurations that need a custom driver. Most newer flash are CFI compliant.
Regards, Tolunay
All the drivers are derived from my original strataflash driver. There is a problem with 8bit wide detection in the flash_cfi_detect routine. The work around is to hardcode the port width after
flash_cfi_detect is
called. I believe I understand the problem, but I have no access to 8bit hardware. If some one is willing to help debug the problem with 8 bit wide protection, I will take on fixing the strataflash driver
and moving it
to the drivers directory. This driver does include support for 64 bit wide flash and
access to the
write once areas. Is anyone willing and able to work with me? Brad
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