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Re: Flash detection
The driver could not get your device to go into "identify" mode.
This can happen for many reasons:
* FLASH is write protected (the "write" signal is not allowed)
The write signal is allowed, actually the flash enters the query mode
and read ID mode succesfully. We have traced it with a logic state
analyzer. we can see all this data string : 0x00890089, 0x00180018,
0x00510051 and blah blah blah....
I can't understand why all the information is in the bus (apparently
succesfull read query and ID process) but the driver is still saying
that can't not recognise the device...
* You've configured the driver incorrectly. You say that you have
2x16 FLASH - what does that mean [to you]? Show us your
configuration lines from the driver include files.
Sorry, I didn't express it correctly... what I meant is that we have
two devices in parallel to form a 32 bit path
The configuration lines are:
in altair_strataflash.inl->
#define CYGNUM_FLASH_DEVICES (2)
#define CYGNUM_FLASH_BASE (0x00000000u)
#define CYGNUM_FLASH_BASE_MASK (0xFE000000u) // 2 * 16Mb devices
#define CYGNUM_FLASH_WIDTH (16)
#define CYGNUM_FLASH_BLANK (1)
#define FLASH_P2V(x) ((volatile flash_t *)(((unsigned)(x) < 0x1000) ? \
((unsigned)(x) | 0xa0000000) : \
(unsigned)(x)))
Note: the iPAQ flash is 2 devices organized in parallel to form a
32 bit path. It might be a good place to look for assistance.
--
Gary Thomas <gary@mlbassoc.com>
MLB Associates
On 2003.11.10 16:20, Gary Thomas wrote:
On Mon, 2003-11-10 at 07:29, M.Eugenia G.Valdecasas wrote:
> Hi, I recompiled redboot to use in our board. It has a PXA255
processor
> with 2x16 Intel 28F128J3 Flash. I use the strata flash drivers from
> intel.
> I upload redboot to the board with the JTAG tools but on starting
comes
> an error message:
>
>
> +Can't identify FLASH, sorry, man e, dev 1e, id [<Not a string:
> 0xA000CAFC>] stat 0
> A000CAEC: 0E 1E B0 AB 0E 1E C0 AB 0E 1E D0 AB 0E 1E E0 AB
> |................|
> A000CAFC: 0E 1E F0 AB 00 00 00 00 00 00 00 00 00 00 00 00
> |................|
> A000CB0C: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> |................|
> A000CB1C: 00 00 00 00
> |.... |
> FLASH: driver init failed: Unknown error
>
> I tried the possible solutions named on the mailing list, like in
> strata.c change the line "if ( (qp->manuf_code ==
FLASH_Intel_code)"
> for "if(1 ", to define CYGHWR_IO_FLASH_DEVICE_NOT_IN_RAM and to
change
> the CNT into a higher value. But I still get the same error and it
does
> not go on.
>
> Have anybody any ideas what is it happening?. I would really
appreciate
> any help. Thank you in advance,
--
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