tree cb74d5404bffc277920dc2e4976a8261a7578648
parent cb8c492f2016d137c6ed887f4f3eff5df98b865c
author Rohan Garg <rohan.garg@collabora.com> 1565622274 +0200
committer Kever Yang <kever.yang@rock-chips.com> 1566555331 +0800

rockchip: rk3399: derive ethaddr from cpuid

Generate a MAC address based on the cpuid available in the efuse
block: Use the first 6 byte of the cpuid's SHA256 hash and set the
locally administered bits. Also ensure that the multicast bit is
cleared.

The MAC address is only generated and set if there is no ethaddr
present in the saved environment.

This is based off of Klaus Goger's work in 8adc9d

Signed-off-by: Rohan Garg <rohan.garg@collabora.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>