Dear manojatl,
In message 31920053.post@talk.nabble.com you wrote:
We are in the process of porting linux to our custom board. We are using u-boot-1.1.6 as bootloader. We are able to successfully port u-boot in RAM
First, U-Boot 1.1.6 is more than 5 years old and only of interest to paleontologists - like a dinosaur. I tmakes absolutely no sense putting any efforts n such old code. Please do yourself (and us) a favour and use current code (i. e. v2011-06-rc3 or later).
to our custom board. But we want to run the u-boot from flash. We understand that u-boot is capable of relocating the code from flash to ram. But we didn't find any idea for changing the address of '_start', which is always loaded with TEXT_BASE address.
Then just change the setting of TEXT_BASE as needed.
Note that it would have been helpful if you had mentioned which architecture / CPU / board you are talking about.
Best regards,
Wolfgang Denk