Ben Warren wrote:
Nethra,
On Fri, 2006-11-03 at 04:03 -0800, Nethra wrote:
kindly suggest the changes to be done.
- if i want do changes in u-boot-1.1.1for custom board what are all the
changes to be done.
thanks Nethra
Here are the initial steps. Once you've completed them, feel free to post follow-on questions:
- The U-boot code that you have is old. Please get the latest,
nominally version 1.1.6, which is available at git://www.denx.de/git/u-boot.git
You'll need to install and learn the 'git' source code control application. I'd explain how, but you'll learn much more if you figure it out for yourself. Google will help you here. OK, here's one link: http://www.kernel.org/pub/software/scm/git/docs/everyday.html#Individual %20Developer%20(Participant)
- Read the excellent documentation at
http://www.denx.de/wiki/DULG/Manual
- Read the README that accompanies the U-boot code. There is a section
on code porting that will be useful. There is also lots of documentation in the /doc directory, some of which may be helpful to you.
- Read and understand the source code for the 'pq2fads' board that your
custom board is based on.
regards, Ben
Do all of the above, then when you make your configuration, use the PQ2FADS-ZU_lowboot_config: $ make PQ2FADS-ZU_lowboot_config
Look at the top level Makefile to see what it is doing, it is putting some customizing stuff in the include/config.h file (make the configuration and then look in the config.h file).
You need to switch a jumper J7 to short pins 1-2 (default is 2-3) to switch from fetching the HRCW from the BCSR register to fetching the HRCW from flash.
DON'T erase the high boot version of u-boot - by switching the jumper J7 back, you can recover from loading a bad u-boot in the lowboot position by reloading a good lowboot u-boot. DAMHIKT.
gvb