Merge pull request #988 from Leo-Yan/fix_cpu_off_v1 ...

plat: Hikey960: fix the CPU hotplug

hikey960: migrate to use A53 specific defines ...

The patch fb7d32e migrated the CPU
libraries to have unique defines, prefixing them with the CPU name.

This patch migrates the hikey960 platform port to use the A53 specific
defines.

Change-Id: Id76f544b0b236bbd4974ab5ffa1203f073c20021
Signed-off-by: David Cunado <david.cunado@arm.com>

plat: Hikey960: fix the CPU hotplug ...

In CPU off callback function, the old code uses the function
hisi_test_pwrdn_allcores() to check if all CPUs in cluster have been
powered off and if it's valid then power off the whole cluster. But the
function hisi_test_pwrdn_allcores() only maintains the different power
states only for CPU suspend/resume flow, so it cannot return correct
states for CPU on/off flow.

This patch is to change use hisi_test_cpu_down() to check if all CPUs
have been powered off, so that can power off the whole cluster properly
when all CPUs in cluster have been hotplugged off.

Signed-off-by: Tao Wang <kevin.wangtao@hisilicon.com>
Signed-off-by: Leo Yan <leo.yan@linaro.org>

hikey960: remove mailbox driver ...

Since this mailbox driver is abandoned, remove it.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>

hikey960: fix the calculation in boardid ...

Since the type of ADC value is always unsigned int, don't
need to check the value with negative value.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>

hikey960: support BL31 ...

Support BL31 on HiKey960 platform. Implement PSCI.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>

hikey960: support BL2 ...

BL2 loads MCU firmware & BL31 on hikey960 platform. The MCU firmware
is used to implement low power feature.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>

hikey960: support BL1 on hikey960 platform ...

Support BL1 on HiKey960 platform. When recovery mode is detected,
BL1 loads NS BL1U that flushs images into UFS. When normal boot
mode is detected, BL1 loads BL2.

Fix for https://github.com/ARM-software/tf-issues/issues/486

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>