[PATCH 0/2] Add support for loading images above 4GB

[Michal Simek]

Hi Simon,

On 07. 09. 20 3:43, Simon Glass wrote:
> Hi Michal,
> 
> On Thu, 3 Sep 2020 at 06:30, Michal Simek <michal.simek at xilinx.com> wrote:
>>
>> Hi,
>>
>> On 03. 09. 20 13:16, Heinrich Schuchardt wrote:
>>> On 9/3/20 1:03 PM, Michal Simek wrote:
>>>> Hi,
>>>>
>>>> We have several use cases where customers want to partition memory by
>>>> putting NS images above 4GB. On Xilinx arm 64bit SOC 0-2GB can be used for
>>>> others CPU in the systems (like R5) or for secure sw.
>>>> Currently there is limitation in SPL to record load/entry addresses in
>>>> 64bit format because they are recorded in 32bit only.
>>>> This series add support for it.
>>>> Patches have been tested on Xilinx ZynqMP zcu102 board in SD bootmode with
>>>> images generated by binman. Because u-boot is using
>>>> CONFIG_POSITION_INDEPENDENT it can be put to others 4k aligned addresses
>>>> and there is no real need to build it to certain offset.
>>>>
>>>> Thanks,
>>>> Michal
>>>
>>> Hello Michal,
>>>
>>> does this series require changes to doc/uImage.FIT/source_file_format.txt?
>>
>> I am not changing fit format. I am just changing how SPL records
>> loadables in DT fit-images node. And also series is using FIT functions
>> for reading these properties (at least in this version).
> 
> Well I think there should be some mention of the 32/64 bit issue added
> to the FIT docs. How about adding an example with 64-bit addresses?

git grep "fit-images" doc/
and output is 0. It means we really don't have any documentation for
fit-images embed node.
It means we should create one.

/fit-images are related to loadables property that's why I think make
sense to document them together.

What about doc/uImage.FIT/howto.txt?

Thanks,
Michal

Do we have any doc which describe