Move the assembly code for cluster cache enabling and resuming
into an assembly file instead of having it directly in C code.

Remove the CFLAGS because we are using the ARM directive "arch"
instead.
Signed-off-by: NMylène Josserand <mylene.josserand@bootlin.com>
Acked-by: NMaxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: NMaxime Ripard <maxime.ripard@bootlin.com>

The A80 is a big.LITTLE SoC with 1 cluster of 4 Cortex-A7s and
1 cluster of 4 Cortex-A15s.

This patch adds support to bring up the second cluster and thus all
cores using custom platform SMP code. Core/cluster power down has not
been implemented, thus CPU hotplugging is not supported.

Parts of the trampoline and re-entry code for the boot cpu was adapted
from the MCPM framework.
Signed-off-by: NChen-Yu Tsai <wens@csie.org>

Building an SMP kernel for the sunxi platform with THUMB2 instructions
fails with this error at the moment:

headsmp.S:7: Error: Thumb encoding does not support an immediate here -- `msr cpsr_fsxc,#0xd3'

Since the generic secondary_startup function already does
the same thing in a safe way, we can just drop the private
sunxi implementation and jump straight to secondary_startup.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>

The A31 is a quad Cortex-A7. Add the logic to use the IPs used to
control the CPU configuration and the CPU power so that we can bring up
secondary CPUs at boot.
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>

Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: NStefan Roese <sr@denx.de>