Hi all

We have designed a board with AT91SAM9XE512-ek chip with Micron 16 bit nandflash (MT29F2G16ABA) for which the nandID is 0x2cca.


1. When I read the nandflash Id thru latest ATBootstrap code, the nand id is
read as 0x2c01.

2. when I use nandflash applet in isp-projects and when I give Enable nandflash
option in SAM-BA the nandflash id is read correctly as 0x2cca.
erase option and write file option is also working correctly

Why the bootstrap is reading 0x2c01 instead of 0x2cca ?
and Iam wondering how the nandflash applet is reading correctly


Can Somebody shed some light on this issue..

I guess you'd need to look at how the nand detection code is switching between the 8 and 16-bit modes, and how the data is being masked.

nandflash_hw_init()
nandflash_cfg_16bits_dbw_init()
nandflash_cfg_8bits_dbw_init()

You'd also need to look at the nand_ids.h to make sure the ID is found.

Add instrumentation to AT91BootStrap if you need to pin down the problem.