[U-Boot] ppc: How to get uboot (relocated) start address in RAM

[U-Boot] ppc: How to get uboot (relocated) start address in RAM

[Richard Retanubun]

Hi,

I a world post-ppc-relocation-patch, with gd->reloc_off removed,

I seem to have lost my way of figuring out uboot's address in RAM at run time.
Previously, I am able to use (gd->reloc_off+CONFIG_SYS_MONITOR_BASE) to get the answer.

Knowing the address is very useful for debuggging uboot using gdb.

The only spot that works now is the dest_addr variable in lib_ppc/board.c::board_init_r

debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);

But the dest_addr is not saved into a global data variable.

Is it ok if I submit a patch that copies this dest_addr to gd->relocaddr
(currently only used by CONFIG_AMIGAONEG3SE) and print it as part of bdinfo?


Or is there a better method I am missing?

Regards,

- Richard Retanubun

[U-Boot] ppc: How to get uboot (relocated) start address in RAM

[Detlev Zundel]

Hi Richard,

> I a world post-ppc-relocation-patch, with gd->reloc_off removed,
>
> I seem to have lost my way of figuring out uboot's address in RAM at run time.
> Previously, I am able to use (gd->reloc_off+CONFIG_SYS_MONITOR_BASE) to get the answer.
>
> Knowing the address is very useful for debuggging uboot using gdb.
>
> The only spot that works now is the dest_addr variable in lib_ppc/board.c::board_init_r
>
> debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
>
> But the dest_addr is not saved into a global data variable.
>
> Is it ok if I submit a patch that copies this dest_addr to gd->relocaddr
> (currently only used by CONFIG_AMIGAONEG3SE) and print it as part of bdinfo?

Actually I also realised lately that the missing reloc_off makes
debugging harder :(

> Or is there a better method I am missing?

I did not come around looking into it more closely, but your approach
seems to be a good plan.  Can you please cook up a patch so we can have
a look at it?

Thanks
  Detlev

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