[U-Boot] [PATCH] ARMv8/sec_firmware : Update chosen/kaslr-seed

[Peter Robinson]

>> -----Original Message-----
>> From: Peter Robinson [mailto:pbrobinson at gmail.com]
>> Sent: Monday, May 15, 2017 6:18 PM
>> To: Ruchika Gupta <ruchika.gupta at nxp.com>
>> Cc: u-boot at lists.denx.de; sun.york at nxp.com; Prabhakar Kushwaha
>> <prabhakar.kushwaha at nxp.com>
>> Subject: Re: [U-Boot] [PATCH] ARMv8/sec_firmware : Update chosen/kaslr-
>> seed
>>
>> On Sat, May 13, 2017 at 1:07 AM, Ruchika Gupta <ruchika.gupta at nxp.com>
>> wrote:
>> > kASLR support in kernel requires a random number to be passed via
>> > chosen/kaslr-seed propert. sec_firmware generates this random seed
>> > which can then be passed in the device tree node
>>
>> Is that functionality generic that it can be consumed by other devices?
> Sec firmware is proprietary firmware which provides this random seed using HW engine on NXP devices.
> Other devices would need to generate their own random seed to be passed as this property.

yes, my point was more shouldn't there be a generic framework for this
as the functionality isn't unique to the HW engine on the NXP devices,
even if the HW is, and kASLR is a pretty generic requirement.

I know Tom, Alexander, myself and others discussed such a thing at ELC
in Portland in February and if memory serves providing that seed via
the uefi boot services (I may have that terminology wrong) for ARMv8.
Tom/Alexander do you remember the details of that conversation, know
if anyone was working on it?

Peter