On 18.02.2013 10:57, Jagan Teki wrote:
> I have a 16MB, M29EW flash on target boards.
>
> I got the below info, while probing the flash.
>
> Bank # 1: CFI conformant flash (8 x 8) Size: 64 MB in 512 Sectors
> AMD Standard command set, Manufacturer ID: 0xFF, Device ID: 0xFF
> Erase timeout: 4096 ms, write timeout: 2 ms
> Buffer write timeout: 5 ms, buffer size: 1024 bytes
>
> Since the Manu.ID of this flash is 0x89, it got detected as 0xFF.
>
> Does u-boot code have a support for M29EW flash..?
I'm pretty sure, yes. Which U-Boot version are you using? Most likely
its an older version. Your problem reminds me about this commit:
Author: Philippe De Muyter <p...@macqel.be> 2010-08-10 16:54:52
Committer: Stefan Roese <s...@denx.de> 2010-08-18 09:09:00
Parent: 2e97394a6d07a36dfc139b7b98b12e452b5bd8dc (cfi_flash: flinfo:
allow user interrupt in flash print info fn)
Child: 70084df7125a0b67de707b999982ec67adfdc35c (cfi_flash: Cleanup
flash_print_info())
Branches: many (98)
Follows: v2010.06
Precedes: v2010.09-rc1
Fix printing & reading of 16-bit CFI device identifiers
Fix reading and printing of CFI flashes 16-bit devices identifiers
Nowadays CFI flashes have a 16-bit device identifier. U-boot still
print them and read them as if they were only 8-bit wide. Fix that.
Before:
Intel Extended command set, Manufacturer ID: 0x89, Device ID: 0x1B
After:
Intel Extended command set, Manufacturer ID: 0x89, Device ID: 0x881B
So please update to the latest version and try again.
Best regards,
Stefan
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