From ac1cc8eb76c39bca445478c2dffa9cd18829cff4 Mon Sep 17 00:00:00 2001 From: Soby Mathew Date: Wed, 27 Apr 2016 14:46:28 +0100 Subject: 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 --- include/bl31/services/psci.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/bl31/services/psci.h b/include/bl31/services/psci.h index acf07869..95e77809 100644 --- a/include/bl31/services/psci.h +++ b/include/bl31/services/psci.h @@ -265,6 +265,8 @@ typedef struct plat_psci_ops { void (*pwr_domain_on_finish)(const psci_power_state_t *target_state); void (*pwr_domain_suspend_finish)( const psci_power_state_t *target_state); + void (*pwr_domain_pwr_down_wfi)( + const psci_power_state_t *target_state) __dead2; void (*system_off)(void) __dead2; void (*system_reset)(void) __dead2; int (*validate_power_state)(unsigned int power_state, -- cgit