From mboxrd@z Thu Jan  1 00:00:00 1970
From: lanmanck <lanmanck@163.com>
Date: Fri, 29 May 2009 12:49:52 +0800 (CST)
Subject: [U-Boot] hi,guys,about the nand flash driver
Message-ID: <8741663.90171243572592561.JavaMail.coremail@bj163app88.163.com>
List-Id: <u-boot.lists.denx.de>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: u-boot@lists.denx.de

hi:
 i am going to port uboot1.1.6 nand flash driver to my arm926ejs board.use /drivers/nand/nand.c. not nand_legacy.c .
out cpu chip has a nand flash controller,the program flow is as below:
1?set address to controller's register
2?set command to controller's register
3?write controller's special register,so that the 2 steps above can execute.
4?wait for the steps above to be completed ,through another register.
5?now program the data.
the problem is;
i don't konw how to set struct nand_chip's func point because of the nand controller:
xxx_hwcontrol(): the ale,cle cannot be controlled by program.
IO_ADDRW:what's it?
 now i think i just need to write the fllowing functions:
wirtebyte,readbyte,writebuf,readbuf,
can anyone tell me if i am right? or give me some advise?
thank you.