diff options
| author | Usama Arif <usama.arif@arm.com> | 2019-09-26 16:07:53 +0100 |
|---|---|---|
| committer | Usama Arif <usama.arif@arm.com> | 2019-10-03 10:09:04 +0100 |
| commit | 59ffec157ca8d675165f122c901c1ff198a810bc (patch) | |
| tree | 7b98f70c616bab85b3698ebd3f1b8bb4587a83cf /plat/arm | |
| parent | ace23683beb81354d6edbc61c087ab8c384d0631 (diff) | |
a5ds: Add handler for when user tries to switch off secondary cores
a5ds only has always-on power domain and there is no power control
present. However, without the pwr_domain_off handler, the kernel
panics when the user will try to switch off secondary cores. The
a5ds_pwr_domain_off handler will prevent kernel from crashing,
i.e. the kernel will attempt but fail to shut down the secondary CPUs
if the user tries to switch them offline.
Change-Id: I3c2239a1b6f035113ddbdda063c8495000cbe30c
Signed-off-by: Usama Arif <usama.arif@arm.com>
Diffstat (limited to 'plat/arm')
| -rw-r--r-- | plat/arm/board/a5ds/a5ds_pm.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/plat/arm/board/a5ds/a5ds_pm.c b/plat/arm/board/a5ds/a5ds_pm.c index 98de77d1..cc734b00 100644 --- a/plat/arm/board/a5ds/a5ds_pm.c +++ b/plat/arm/board/a5ds/a5ds_pm.c @@ -3,6 +3,7 @@ * * SPDX-License-Identifier: BSD-3-Clause */ +#include <assert.h> #include <lib/psci/psci.h> #include <plat/arm/common/plat_arm.h> @@ -40,6 +41,18 @@ void a5ds_pwr_domain_on_finish(const psci_power_state_t *target_state) } /******************************************************************************* + * Platform handler called when a power domain is about to be turned off. The + * target_state encodes the power state that each level should transition to. + * a5ds only has always-on power domain and there is no power control present. + ******************************************************************************/ +void a5ds_pwr_domain_off(const psci_power_state_t *target_state) +{ + ERROR("CPU_OFF not supported on this platform\n"); + assert(false); + panic(); +} + +/******************************************************************************* * Export the platform handlers via a5ds_psci_pm_ops. The ARM Standard * platform layer will take care of registering the handlers with PSCI. ******************************************************************************/ @@ -47,7 +60,8 @@ plat_psci_ops_t a5ds_psci_pm_ops = { /* dummy struct */ .validate_ns_entrypoint = NULL, .pwr_domain_on = a5ds_pwr_domain_on, - .pwr_domain_on_finish = a5ds_pwr_domain_on_finish + .pwr_domain_on_finish = a5ds_pwr_domain_on_finish, + .pwr_domain_off = a5ds_pwr_domain_off }; int __init plat_setup_psci_ops(uintptr_t sec_entrypoint, |