[U-Boot] [RFC PATCH] dm: Add support for all targets which requires MANUAL_RELOC

[Michal Simek]

Hi Simon,

On 02/06/2015 06:45 AM, Simon Glass wrote:
> On 4 February 2015 at 23:31, Michal Simek <michal.simek at xilinx.com> wrote:
>> Hi,
>>
>> On 02/05/2015 04:07 AM, Simon Glass wrote:
>>> Hi Michal,
>>>
>>> On 3 February 2015 at 17:40, Simon Glass <sjg at chromium.org> wrote:
>>>> Hi Michal,
>>>>
>>>> On 3 February 2015 at 02:11, Michal Simek <michal.simek at xilinx.com> wrote:
>>>>> Hi Simon,
>>>>>
>>>>> On 02/03/2015 03:02 AM, Masahiro Yamada wrote:
>>>>>> Hi.
>>>>>>
>>>>>>
>>>>>> On Mon, 2 Feb 2015 16:57:15 -0700
>>>>>> Simon Glass <sjg at chromium.org> wrote:
>>>>>>
>>>>>>> Hi Michal,
>>>>>>>
>>>>>>> On 2 February 2015 at 08:31, Michal Simek <michal.simek at xilinx.com> wrote:
>>>>>>>> Targets with CONFIG_NEEDS_MANUAL_RELOC do not use REL/RELA
>>>>>>>> relocation (mostly only GOT) where functions aray are not
>>>>>>>> updated. This patch is fixing function pointers for DM core
>>>>>>>> and serial-uclass to ensure that relocated functions are called.
>>>>>>>>
>>>>>>>> Signed-off-by: Michal Simek <michal.simek at xilinx.com>
>>>>>>>> ---
>>>>>>>>
>>>>>>>>  drivers/core/root.c            | 64 ++++++++++++++++++++++++++++++++++++++++++
>>>>>>>>  drivers/serial/serial-uclass.c | 16 +++++++++++
>>>>>>>>  2 files changed, 80 insertions(+)
>>>>>>>
>>>>>>> How long will we have to carry this patch? It seems that if we add any
>>>>>>> new driver we will have to add more code like this?
>>>>>>
>>>>>>
>>>>>>
>>>>>> This patch is unfortunate.
>>>>>> Can we discontinue CONFIG_NEEDS_MANUAL_RELOC some day?
>>>>>
>>>>> This patch (or similar one) has to be alive when we have platform
>>>>> which requires CONFIG_NEEDS_MANUAL_RELOC for full u-boot.
>>>>> There is an option to move to REL/RELA but the question is if
>>>>> all platforms have it/support it. Unfortunately I think that
>>>>> it will be in the tree for a long time.
>>>>>
>>>>>>
>>>>>> If we use SPL, we do not have to relocate code, I think.
>>>>>
>>>>> SPL doesn't have relocation that's why this code is not used there.
>>>>
>>>> Maybe I asked this before, but when can we remove
>>>> CONFIG_NEEDS_MANUAL_RELOC? What platforms need it?
>>>
>>> Sorry if you answered these questions but can you please resend if so
>>> as I missed it.
>>
>> Graeme has answered it + my response here.
>> http://lists.denx.de/pipermail/u-boot/2015-February/203911.html
>>
>> removing: When all platforms are moved to REL/RELA we can remove this
>> manual reloc option.
> 
> With a heavy heart:
> 
> Acked-by: Simon Glass <sjg at chromium.org>
> 

Are you going to take this patch to your DM tree?

Thanks,
Michal