Hello Bo Shen, On Mon, 2013-02-18 at 11:06 +0800, Bo Shen wrote:

Hi John,

On 02/16/2013 12:45 AM, John Stile wrote:

...

I am trying to move from uboot-1.3.6 to uboot 2013.01, where the old works, the new prints this before freezing:

     U-Boot 2013.01 (Feb 14 2013 - 16:24:13)

     CPU: AT91SAM9G20
     Crystal frequency:   18.432 MHz
     CPU clock        :  396.288 MHz
     Master clock     :  132.096 MHz

My board is the at91sam9g20ek_2mmc. at91bootstrap-1.1.6 loads uboot.

Please update the at91bootstrap to new version. You can get the it from: git://github.com/linux4sam/at91bootstrap.git using tag: v3.5.2 or master branch

For new bootstrap, the memory map for NAND flash has changed. More information: http://www.at91.com/linux4sam/bin/view/Linux4SAM/GettingStarted#Linux4SAM_Na...

So, you need flash u-boot to 0x40000 address, and change u-boot env as the memory map (I will send patches for this later).

Best Regards, Bo Shen

...

I am trying both nandflash and dataflash versions, using include/configs/at91sam9260ek.h

Messing with settings I have got it back to a state of not printing anything.

I was wrong. it isn't a timing issue. In at91boostrap, I specified the wrong IMG_SIZE, and specifying the correct size solved the problem. I had only copied part of the binary to SDRAM, which lead to the program sometimes showing the initial banner before crashing.

In my situation, I use buildroot-2011.11, which downloads at91boostrap from: ftp://www.at91.com/pub/at91bootstrap/ version AT91Bootstrap1.16.zip, and though updates are the available I have modified my st91boostrap and uboot, so upgrades are not so simple.