tree 33c404b8b2af247e8c6883d43dbbba2df03082a6
parent e141aa0357fd4977ba874f4f86874e2cadc73498
author Soby Mathew <soby.mathew@arm.com> 1461764788 +0100
committer Soby Mathew <soby.mathew@arm.com> 1464181200 +0100

PSCI: Add pwr_domain_pwr_down_wfi() hook in plat_psci_ops

This patch adds a new optional platform hook `pwr_domain_pwr_down_wfi()` in
the plat_psci_ops structure. This hook allows the platform to perform platform
specific actions including the wfi invocation to enter powerdown. This hook
is invoked by both psci_do_cpu_off() and psci_cpu_suspend_start() functions.
The porting-guide.md is also updated for the same.

This patch also modifies the `psci_power_down_wfi()` function to invoke
`plat_panic_handler` incase of panic instead of the busy while loop.

Fixes ARM-Software/tf-issues#375

Change-Id: Iba104469a1445ee8d59fb3a6fdd0a98e7f24dfa3