Hi Scott Yes thats the exact problem im going to face. But the function is a must. Could you help me understand what all are the things i will have to keep in mind if I have to write the nand write function.. i have made a list of instructions which i would have to follow from the datasheet: 1. Serial data input command - 0x80 2. 5 cycle address input 3. Serial Data loading 4 Page program confirm command - 0x10 5. read status register command - 0x70

my function just has to write over the environment variable part at 0x60000 address could you tell me wat all things i shud take care of.? Regards, Deepak Gopalakrishnan

Scott Wood scottwood@freescale.com 05/21/2009 10:21 PM

To Deepak Gopalakrishnan Deepak.Gopalakrishnan@Lntemsys.com cc u-boot@lists.denx.de Subject Re: [U-Boot] bootstrap nand write function

On Thu, May 21, 2009 at 01:56:37PM +0530, Deepak Gopalakrishnan wrote:

Hi i want to write a function using which i will be able to add a new env variable from the bootstrap. cud you help me with the sequence i should follow when im writing this function... thanks and regards, Deepak Gopalakrishnan

If by "bootstrap" you mean a 4K or so bit of code that loads the main u-boot into RAM, then there's probably not enough room to do that (at least not without hacking something together that is very special-purpose and doesn't use much of the existing environment or NAND infrastructure).

-Scott