Originally the cpuid var the value gets read into was defined as
u8 cpuid[RK3399_CPUID_LEN];
hence the sizeof(cpuid) would return the correct the correct number
of array elements.
With the move to a separate function cpuid becomes a pointer and
sizeof(cpuid) hence returns the pointer size - 8 in the arm64 case.
We do have the actual id length available as function param so use
it for actual amount of bytes to read.
Fixes: 0482538499 ("rockchip: rk3399: derive ethaddr from cpuid")
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Kever Yang<kever.yang@rock-chips.com>
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>
