[U-Boot] [PATCH] arm: Add option to disable code relocation

[Aneesh V]

On Monday 06 February 2012 08:19 PM, Tom Rini wrote:
> On Mon, Feb 6, 2012 at 1:43 AM, Graeme Russ<graeme.russ at gmail.com>  wrote:
>> Hi Wolfgang,
>>
>> On 02/06/2012 06:51 PM, Wolfgang Denk wrote:
>>> Dear Graeme Russ,
>>>
>>> In message<CALButC+==qGs5EaAHtQqU4zEjqvg-3187eWaqU-fv3dWp5QQ7w at mail.gmail.com>  you wrote:
>>>>
>>>> I think the immediate focus should be on centralising the init sequence
>>>> processing into /common/init.c and then bringing the new'initcall'
>>>> architecture online
>>>
>>> Agreed.
>>>
>>>> Once these have been done, any board can just specific:
>>>>
>>>> SKIP_INIT(RELOC)
>>>
>>> I will probably object to his, too - for the same reasons.
>>
>> Considering this is a 'free' artefact of how the init sequence functions,
>> and that it is board specific and totally non-invasive for anyone else
>> (i.e. no ugly ifdef's anywhere else in the code) I'm surprised you would
>> object...
>
> To pick up Wolfgang's argument, but why do we want to skip relocation?
>   You can debug through it, it's documented (official wiki has GDB,
> over in TI-land, the wiki page for CCS has the bits for doing it in
> that Eclipse-based env, other debuggers I'm sure have a similar "now
> add symbols at this offset from link" option) and the end result makes
> it very easy for end-users to break their world (default kernel load
> addrs being where U-Boot would be).

Why do all that circus if it's not adding any value for a given
platform. Also, in the previous thread on this I had pointed out a
specific case where this was hurting us. On a slow FPGA platform the
delay due to the relocation was getting magnified and un-necessarily
wasting our time.

best regards,
Aneesh