Hi Stefan,
On Wed, Feb 20, 2013 at 7:27 PM, Stefan Roese sr@denx.de wrote:
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 phdm@macqel.be 2010-08-10 16:54:52 Committer: Stefan Roese sr@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: 0x881BSo please update to the latest version and try again.
Sorry for not intimating the version I used, actually I am using the latest u-boot version 2013.01.01 Below link the head commit for cfi_flash.c http://git.denx.de/?p=u-boot.git;a=commit;h=d2af028db3f75390f56f018e16c0f269...
I am not sure whats wrong with code for detecting the m/c ID.
Please let me know your inputs.
Thanks, Jagan.