[U-Boot] [AT91] Questions about AT91 architecture in u-boot

[U-Boot] [AT91] Questions about AT91 architecture in u-boot

[Sergey Lapin]

Hi, all!

I have 2 questions about AT91 architecture in u-boot.
1. In file include/dataflash.h there is setting
#define NB_DATAFLASH_AREA              5
What is its real meaning? What if I need to change number of DataFlash
partitions? Probably it should be made board-specific?

2. What is current state with hardware ECC for NAND on at91 CPUs?
And, is there some ideas on how could I make such an image using
mtd-tools' mkfs.jffs2? When I flashed normal image and used hardware ECC
in kernel I have got lots of ECC errors and kernel not mounting rootfs.
BTW, will hardware ECC help me with big NAND (1GB) and lots of system logging
to speed-up stuff?

Thanks a lot,
S.

[U-Boot] [AT91] Questions about AT91 architecture in u-boot

[Jean-Christophe PLAGNIOL-VILLARD]

On 15:40 Mon 11 Aug     , Sergey Lapin wrote:
> Hi, all!
> 
> I have 2 questions about AT91 architecture in u-boot.
> 1. In file include/dataflash.h there is setting
> #define NB_DATAFLASH_AREA              5
> What is its real meaning? What if I need to change number of DataFlash
> partitions? Probably it should be made board-specific?
> 
Yes you update the code to allow a board to overwrite the default value.

Best Regards,
J.