[U-Boot-Users] ppc4xx relocate_code what it does????

[arun c]

Hi all,

I just want to disable relocation because i want to run the uboot from ram
and debug(BDI 2000).

I tried like this i changed the TEXT_BASE to 0x1900000 (my ram is 32 Mb)

But my u-boot code is failing to compile (I am using ELDK)

please anybody help me

Best Regards,
Arun






On 8/10/07, urwithsughosh at gmail.com <urwithsughosh at gmail.com> wrote:
>
>  Hi,
>
> >
> > After doing all the initializations (i.e) serail_init,init_baudrate
> > etc.., finally it reaches to relocate_code(addr_sp,id,addr) in the
> > board_init_f() function in the board.c file (lib_ppc\board.c) ppc4xx.
> > what it does? which part
> > of the code or data copies from flash to the ram?
>
>  The whole u-boot image is copied from the flash to the ram.This is
>  done after the board_init_f function initialises all the required
>  controllers.The relocation code is present in cpu/<your_cpu>/start.S
>
>
> > Is this required while I am running from the SDRAM? what part of the
> > code I can skip in the relocate_code function? If running from the
> > flash what should i do?
>
>  It is required to run from the SDRAM.Since the entire image
>  is copied as is, the complete code needs to be copied.Why would you
>  want to tamper with it?
>
> --
> sughosh
>