NAND instead of NOR Flash-ROMs ??

[Thomas Gleixner]

On Mittwoch, 6. März 2002 19:08 , Juergen Brunk wrote:
> Hello *
>
> Could i use cheaper NAND Flash-ROMs instead of expensive NOR Flash-ROMs
> (like Intel Strato-Flash) to hold the ARM-Kernel/Applikations/Data and
> boot the System from?
You can't boot from NAND-FLASH directly. There are two ways to solve this:

1. Use a CPLD, which provides you access to the first NAND-Page, which must 
then contain a small bootstrap code. 

2. Use a small and cheap 1MB FLASH for bootload which can also contain a 
compressed kernel Image. Start from there and mount a filesystem on the 
NAND-Flash.

I suggest the second one.

-- 
Thomas
_________________________________
Thomas Gleixner <gleixner at autronix.de>
autronix automation http://www.autronix.de