On Thu, 2006-10-05 at 14:03 -0700, bilahari akkiraju wrote:

Hi Ben,

Stuff works fine using U-boot's cfi. I can protect and erase using appropriate commands (protect and erase ) provided by the u-boot. I do not know if there is a u-boot command to write to flash.

My flinfo command shows this :

bank # 1: CFI conformant FLASH (32 x 16) Size: 16 MB in 128 Sectors Erase timeout 16384 ms, write timeout 0 ms, buffer write timeout 4096 ms, buffe2 Sector Start Addresses:

FF000000      FF020000      FF040000      FF060000
 FF080000             
FF0A0000      FF0C0000      FF0E0000      FF100000
 FF120000             

This is odd. The GL064 is either 32x8 or 16x16, and has either 128x64kB or 127x64kB + 8x8kB sector layout. Yours appears to have 128 uniform sectors of 128kB each. Either you're not using the part you think you are or my documentation is out of date.

I am trying low level access because I am writing my own flash utilities which are independent of U-boot and hence have to directly deal with right command sequences.

If your utilities are independent of U-boot then your request is off-topic. Since the CFI driver is working, you're missing something in the sequence of commands being written to flash. I've done it before manually via BDI-2000, and although the Spansion documentation is cryptic, it's technically correct. Sorry I can't help more right now but work beckons...

Also, please copy the U-boot mailing list when corresponding.

regards, Ben