From 785fb92b8a021369348da2316b99b7e143c2806f Mon Sep 17 00:00:00 2001 From: Soby Mathew Date: Tue, 29 Sep 2015 15:47:16 +0100 Subject: Reorganise PSCI PM handler setup on ARM Standard platforms This patch does the following reorganization to psci power management (PM) handler setup for ARM standard platform ports : 1. The mailbox programming required during `plat_setup_psci_ops()` is identical for all ARM platforms. Hence the implementation of this API is now moved to the common `arm_pm.c` file. Each ARM platform now must define the PLAT_ARM_TRUSTED_MAILBOX_BASE macro, which in current platforms is the same as ARM_SHARED_RAM_BASE. 2. The PSCI PM handler callback structure, `plat_psci_ops`, must now be exported via `plat_arm_psci_pm_ops`. This allows the common implementation of `plat_setup_psci_ops()` to return a platform specific `plat_psci_ops`. In the case of CSS platforms, a default weak implementation of the same is provided in `css_pm.c` which can be overridden by each CSS platform. 3. For CSS platforms, the PSCI PM handlers defined in `css_pm.c` are now made library functions and a new header file `css_pm.h` is added to export these generic PM handlers. This allows the platform to reuse the adequate CSS PM handlers and redefine others which need to be customized when overriding the default `plat_arm_psci_pm_ops` in `css_pm.c`. Change-Id: I277910f609e023ee5d5ff0129a80ecfce4356ede --- include/plat/arm/css/common/css_pm.h | 48 ++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 include/plat/arm/css/common/css_pm.h (limited to 'include/plat/arm/css/common/css_pm.h') diff --git a/include/plat/arm/css/common/css_pm.h b/include/plat/arm/css/common/css_pm.h new file mode 100644 index 00000000..c19df92b --- /dev/null +++ b/include/plat/arm/css/common/css_pm.h @@ -0,0 +1,48 @@ +/* + * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of ARM nor the names of its contributors may be used + * to endorse or promote products derived from this software without specific + * prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __CSS_PM_H__ +#define __CSS_PM_H__ + +#include +#include +#include + +int css_pwr_domain_on(u_register_t mpidr); +void css_pwr_domain_on_finish(const psci_power_state_t *target_state); +void css_pwr_domain_off(const psci_power_state_t *target_state); +void css_pwr_domain_suspend(const psci_power_state_t *target_state); +void css_pwr_domain_suspend_finish( + const psci_power_state_t *target_state); +void __dead2 css_system_off(void); +void __dead2 css_system_reset(void); +void css_cpu_standby(plat_local_state_t cpu_state); + +#endif /* __CSS_PM_H__ */ -- cgit v1.2.3