[U-Boot] [PATCH 1/2] rpi: Fix fdt_high & initrd_high for 64-bit builds

[Alexander Graf]

On 24.05.18 16:57, Tuomas Tynkkynen wrote:
> Hi Alex,
> 
> On Thu, 24 May 2018 09:51:57 +0200
> Alexander Graf <agraf at suse.de> wrote:
> 
>> On 20.04.18 12:03, Tuomas Tynkkynen wrote:
>>> The magic value that disables relocation is dependent on the CPU word
>>> size, so the current 'ffffffff' is doing the wrong thing on aarch64.
>>>
>>> Signed-off-by: Tuomas Tynkkynen <tuomas at tuxera.com>  
>>
>> The BCM283x series of SOCs is limited to 32bit address space, so I don't
>> quite see why the current (int)-1 is wrong?
>>
>>
> 
> The comparison for the magic "don't relocate value" is done by parsing
> the variable as ulong and then comparing to ~0. So on 64-bit, ffffffff
> gets interpreted as literal 0xffffffff limit for the relocation (which
> I think in practice is the same as not specifying initrd_high at all
> since the end of DRAM is lower than that) instead.

Ouch, that logic is terrible. But it means your patch is correct. I'll
apply it.


Thanks,

Alex