[U-Boot-Users] Spansion flash not detected by CFI driver

[Shiju <shiju.mathew@amd.com>]

On Thu, 2007-19-04 at 12:51 -0400, Shiju wrote:
> On Thu, 2007-19-04 at 11:46 -0400, Shiju wrote:
> 
> > > > #define CFG_MAX_FLASH_BANKS 1
> > > > #define CFG_MAX_FLASH_SECT 128
> > > This is not correct for your chip. You should have this set not less 
> > > than the total number of ease units (blocks) on your chip.
> > > 
> > > For what I could find on the net this chip seems to have the following 
> > > interesting geometry:
> > > 
> > > 4 x 32kB
> > > 254 x 128kB
> > > 4 x 32kB
> > > 
> > > So, the total should be at least 4 + 254 + 4 = 262
> > > 
> > > Please fix this and provide the logs again...
> > Thanks Tolunay,
> > I could fix the flash detection after changing the total no: of sector
> > to 262. But the flash unprotect sector always times out.The first 4
> > sectors are protected when uboot comes up. I am not able to update uboot
> > from within uboot since unprotect sectors  always fails on these(all)
> > sector. Should I need to change any timeout values.The log is as below.
> > 
> 
> > ### main_loop: bootcmd="run bootcmd_net"
> > Hit any key to stop autoboot:  0
> > uboot>
> > uboot> protect off a0000000 +100000
> > Flash unprotect timeout at address a0000000 data c68686c6
> > .Flash unprotect timeout at address a0008000 data c68686c6
> > .Flash unprotect timeout at address a0010000 data c68686c6
> > .Flash unprotect timeout at address a0018000 data c68686c6
> > .Flash unprotect timeout at address a0020000 data c68686c6
> > .Flash unprotect timeout at address a0040000 data c68686c6
> > .Flash unprotect timeout at address a0060000 data c68686c6
> > .Flash unprotect timeout at address a0080000 data c68686c6
> > .Flash unprotect timeout at address a00a0000 data c68686c6
> > .Flash unprotect timeout at address a00c0000 data c68686c6
> > .Flash unprotect timeout at address a00e0000 data c68686c6
> > . done
> > Un-Protected 11 sectors
> > uboot>
> I have another update. THe protect/unprotect failure was happening only
> when I was using h/w protect enable. I disabled h/w protect to see
> whether everything else goes well. But timeout happens on write as well.
> Below is the log message. 
> 
> uboot> cp.b 0x80000000 0xa0000000 $(filesize)
> Copy to Flash... Flash buffer write timeout at address a0000000 data
> c68686c6
> Timeout writing to Flash
> uboot>
After  disabling the buffered writes, write timeout doesn't happen. ALso
protect/unprotect works well when h/w protect is enabled. Is there a
way to use buffered writes on this flash device.

Thanks,
Shiju
> 
> 
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