[U-Boot-Users] Problem with the ST Microlectronics M29W320B flash and the CFI driver.

[Txema Lopez]

Hi all,

We have a MPC5200B based custom board with a ST Microelectronics 
M29W320B (x8/x16 flash in x8 mode) as boot flash. We are able to program 
the flash using a BDI2000 and start up U-Boot. But U-Boot is unable to 
detect the boot flash using the CFI driver. With the same hardware (but 
other board) and a flash from other vendor (Spansion S29GL32A) the CFI 
driver works properly. Has anyone tested the CFI driver for the M29W320B 
flash?

This is the BDI2000 output when we write a CFI Query command

ffc00000 : 2000 5722 FFFF FFFF FFFF FFFF FFFF FFFF   .W"............
ffc00010 : FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF  ................
ffc00020 : 5100 5200 5900 0200 0000 4000 0000 0000  Q.R.Y..... at .....
ffc00030 : 0000 0000 0000 2700 3600 b500 c500 0400  ......'.6.......
ffc00040 : 0000 0a00 0000 0400 0000 0300 0000 1600  ................
ffc00050 : 0200 0000 0000 0000 0200 0700 0000 2000  .............. .
ffc00060 : 0000 3e00 0000 0000 0100 0000 0000 8000  ..>.............
ffc00070 : 0000 3e00 0000 0000 0100 FFFF FFFF FFFF  ..>.............
ffc00080 : 5000 5200 4900 3100 3000 0000 0200 0100  P.R.I.1.0.......
ffc00090 : 0100 0400 0000 0000 0000 b500 c500 0200  ................
ffc000a0 : FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF  ................
ffc000b0 : FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF  ................
ffc000c0 : FFFF 6012 4e3b f07d 9b54 3500 2002 2003  ..`.N;.}.T5. . .
ffc000d0 : 1200 2700 3a00 0100 0000 0000 0000 0000  ..'.:...........
ffc000e0 : 0000 0f00 0700 0200 0000 0100 0100 0000  ................
ffc000f0 : 0000 0000 0000 0100 0000 0000 0000 0000  ................

AFAIK the CFI driver is waiting an output like this for a x8/x16 device 
in x8 mode:
ffc00020 : 5151 5252 5959   QQRRYY
Am I wrong?


Best regards,


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