On Thu, Jul 2, 2009 at 6:10 AM, E Robertsone.robertson.svg@gmail.com wrote:
Hi All, Has anyone used the JTAG like the BDI2000 to load u-boot onto a at91sam9263? I've done it on other boards but some some reason the code will not execute from on board SDRAM. To avoid initializing the external memory via jtag, I use the bootstrap code to do the setup then load u-boot and run it. For reason(s) I haven't figured out yet, the code will not external memory. Has anyone done this before and can provide some help? Thanks.
How come you want to execute it from RAM? Is the board without flash? Could you instead replace the "bootstrap" loader with U-Boot?
It the SDRAM controller is already setup, I guess you must recode U-Boot and tell it not to touch/re-initialize the memory controller...
Btw, look at http://www.denx.de/wiki/view/DULG/CanUBootBeConfiguredSuchThatItCanBeStarted...
- Frank