[J-core] Instruction Request: Dedicated CPUID Function

[D. Jeff Dionne]

On Oct 24, 2017, at 08:03, Cedric BAIL <cedric.bail at free.fr> wrote:

Hi Cedric,

Agree that linux kernel proper provides that information to the driver and application layers... the issue is the on chip storage for the .dtb contents.   One quickly finds out that if you put the .dtb in off chip storage (SDcard or SPI flash) that what happens is the wrong one ends up on your device and the world breaks.

My point is there is n bytes of storage practically available on chip for that, where 128 <= n <= 2k.  At 2k, it's already 1/4 of a nice, practical on chip 1st stage bootloader...

>> OTOH, if the tree is some kb in size, that is not attractive.
> 
> The tree is processed by the kernel in all case and valuable information to user space like this can be exposed via existing Linux