[PATCH 2/2] spl: fdt: Record load/entry fit-images entries in 64bit format
Michal Simek
michal.simek at xilinx.com
Mon Sep 7 10:29:09 CEST 2020
On 07. 09. 20 3:43, Simon Glass wrote:
> Hi Michal,
>
> On Thu, 3 Sep 2020 at 05:03, Michal Simek <michal.simek at xilinx.com> wrote:
>>
>> The commit 9f45aeb93727 ("spl: fit: implement fdt_record_loadable") which
>> introduced fdt_record_loadable() state there spl_fit.c is not 64bit safe.
>> Based on my tests on Xilinx ZynqMP zcu102 platform there shouldn't be a
>> problem to record these addresses in 64bit format.
>> The patch adds support for systems which need to load images above 4GB.
>
> But what about 32-bit systems who read this as a 32-bit number?
> Perhaps we should write 32-bit if !CONFIG_PHYS_64BIT?
The code for reading doesn't really care if value is 32bit or 64bit.
The fit_image_get_entry() and fit_image_get_load() read number of cells
used and based on that read 32 or 64 bit values.
Thanks,
Michal
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