/* * Copyright (c) 2013-2014, 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 __PSCI_H__ #define __PSCI_H__ #include #include /* for PLATFORM_NUM_AFFS */ /******************************************************************************* * Number of affinity instances whose state this psci imp. can track ******************************************************************************/ #ifdef PLATFORM_NUM_AFFS #define PSCI_NUM_AFFS PLATFORM_NUM_AFFS #else #define PSCI_NUM_AFFS (2 * PLATFORM_CORE_COUNT) #endif /******************************************************************************* * Defines for runtime services func ids ******************************************************************************/ #define PSCI_VERSION 0x84000000 #define PSCI_CPU_SUSPEND_AARCH32 0x84000001 #define PSCI_CPU_SUSPEND_AARCH64 0xc4000001 #define PSCI_CPU_OFF 0x84000002 #define PSCI_CPU_ON_AARCH32 0x84000003 #define PSCI_CPU_ON_AARCH64 0xc4000003 #define PSCI_AFFINITY_INFO_AARCH32 0x84000004 #define PSCI_AFFINITY_INFO_AARCH64 0xc4000004 #define PSCI_MIG_AARCH32 0x84000005 #define PSCI_MIG_AARCH64 0xc4000005 #define PSCI_MIG_INFO_TYPE 0x84000006 #define PSCI_MIG_INFO_UP_CPU_AARCH32 0x84000007 #define PSCI_MIG_INFO_UP_CPU_AARCH64 0xc4000007 #define PSCI_SYSTEM_OFF 0x84000008 #define PSCI_SYSTEM_RESET 0x84000009 #define PSCI_FEATURES 0x8400000A #define PSCI_SYSTEM_SUSPEND_AARCH32 0x8400000E #define PSCI_SYSTEM_SUSPEND_AARCH64 0xc400000E /* Macro to help build the psci capabilities bitfield */ #define define_psci_cap(x) (1 << (x & 0x1f)) /* * Number of PSCI calls (above) implemented */ #define PSCI_NUM_CALLS 18 /******************************************************************************* * PSCI Migrate and friends ******************************************************************************/ #define PSCI_TOS_UP_MIG_CAP 0 #define PSCI_TOS_NOT_UP_MIG_CAP 1 #define PSCI_TOS_NOT_PRESENT_MP 2 /******************************************************************************* * PSCI CPU_SUSPEND 'power_state' parameter specific defines ******************************************************************************/ #define PSTATE_ID_SHIFT 0 #define PSTATE_TYPE_SHIFT 16 #define PSTATE_AFF_LVL_SHIFT 24 #define PSTATE_ID_MASK 0xffff #define PSTATE_TYPE_MASK 0x1 #define PSTATE_AFF_LVL_MASK 0x3 #define PSTATE_VALID_MASK 0xFCFE0000 #define PSTATE_TYPE_STANDBY 0x0 #define PSTATE_TYPE_POWERDOWN 0x1 #define psci_get_pstate_id(pstate) (((pstate) >> PSTATE_ID_SHIFT) & \ PSTATE_ID_MASK) #define psci_get_pstate_type(pstate) (((pstate) >> PSTATE_TYPE_SHIFT) & \ PSTATE_TYPE_MASK) #define psci_get_pstate_afflvl(pstate) (((pstate) >> PSTATE_AFF_LVL_SHIFT) & \ PSTATE_AFF_LVL_MASK) #define psci_make_powerstate(state_id, type, afflvl) \ (((state_id) & PSTATE_ID_MASK) << PSTATE_ID_SHIFT) |\ (((type) & PSTATE_TYPE_MASK) << PSTATE_TYPE_SHIFT) |\ (((afflvl) & PSTATE_AFF_LVL_MASK) << PSTATE_AFF_LVL_SHIFT) /******************************************************************************* * PSCI CPU_FEATURES feature flag specific defines ******************************************************************************/ /* Features flags for CPU SUSPEND power state parameter format. Bits [1:1] */ #define FF_PSTATE_SHIFT 1 #define FF_PSTATE_ORIG 0 #define FF_PSTATE_EXTENDED 1 /* Features flags for CPU SUSPEND OS Initiated mode support. Bits [0:0] */ #define FF_MODE_SUPPORT_SHIFT 0 #define FF_SUPPORTS_OS_INIT_MODE 1 /******************************************************************************* * PSCI version ******************************************************************************/ #define PSCI_MAJOR_VER (1 << 16) #define PSCI_MINOR_VER 0x0 /******************************************************************************* * PSCI error codes ******************************************************************************/ #define PSCI_E_SUCCESS 0 #define PSCI_E_NOT_SUPPORTED -1 #define PSCI_E_INVALID_PARAMS -2 #define PSCI_E_DENIED -3 #define PSCI_E_ALREADY_ON -4 #define PSCI_E_ON_PENDING -5 #define PSCI_E_INTERN_FAIL -6 #define PSCI_E_NOT_PRESENT -7 #define PSCI_E_DISABLED -8 /******************************************************************************* * PSCI affinity state related constants. An affinity instance could be present * or absent physically to cater for asymmetric topologies. If present then it * could in one of the 4 further defined states. ******************************************************************************/ #define PSCI_STATE_SHIFT 1 #define PSCI_STATE_MASK 0xff #define PSCI_AFF_ABSENT 0x0 #define PSCI_AFF_PRESENT 0x1 #define PSCI_STATE_ON 0x0 #define PSCI_STATE_OFF 0x1 #define PSCI_STATE_ON_PENDING 0x2 #define PSCI_STATE_SUSPEND 0x3 #define PSCI_INVALID_DATA -1 #define get_phys_state(x) (x != PSCI_STATE_ON ? \ PSCI_STATE_OFF : PSCI_STATE_ON) #define psci_validate_power_state(pstate) (pstate & PSTATE_VALID_MASK) #ifndef __ASSEMBLY__ #include /******************************************************************************* * Structure used to store per-cpu information relevant to the PSCI service. * It is populated in the per-cpu data array. In return we get a guarantee that * this information will not reside on a cache line shared with another cpu. ******************************************************************************/ typedef struct psci_cpu_data { uint32_t power_state; #if !USE_COHERENT_MEM bakery_info_t pcpu_bakery_info[PSCI_NUM_AFFS]; #endif } psci_cpu_data_t; /******************************************************************************* * Structure populated by platform specific code to export routines which * perform common low level pm functions ******************************************************************************/ typedef struct plat_pm_ops { void (*affinst_standby)(unsigned int power_state); int (*affinst_on)(unsigned long mpidr, unsigned long sec_entrypoint, unsigned int afflvl); void (*affinst_off)(unsigned int afflvl); void (*affinst_suspend)(unsigned long sec_entrypoint, unsigned int afflvl); void (*affinst_on_finish)(unsigned int afflvl); void (*affinst_suspend_finish)(unsigned int afflvl); void (*system_off)(void) __dead2; void (*system_reset)(void) __dead2; int (*validate_power_state)(unsigned int power_state); int (*validate_ns_entrypoint)(unsigned long ns_entrypoint); unsigned int (*get_sys_suspend_power_state)(void); } plat_pm_ops_t; /******************************************************************************* * Optional structure populated by the Secure Payload Dispatcher to be given a * chance to perform any bookkeeping before PSCI executes a power mgmt. * operation. It also allows PSCI to determine certain properties of the SP e.g. * migrate capability etc. ******************************************************************************/ typedef struct spd_pm_ops { void (*svc_on)(uint64_t target_cpu); int32_t (*svc_off)(uint64_t __unused); void (*svc_suspend)(uint64_t __unused); void (*svc_on_finish)(uint64_t __unused); void (*svc_suspend_finish)(uint64_t suspend_level); int32_t (*svc_migrate)(uint64_t from_cpu, uint64_t to_cpu); int32_t (*svc_migrate_info)(uint64_t *resident_cpu); void (*svc_system_off)(void); void (*svc_system_reset)(void); } spd_pm_ops_t; /******************************************************************************* * Function & Data prototypes ******************************************************************************/ unsigned int psci_version(void); int psci_affinity_info(unsigned long, unsigned int); int psci_migrate(unsigned long); int psci_migrate_info_type(void); long psci_migrate_info_up_cpu(void); int psci_cpu_on(unsigned long, unsigned long, unsigned long); void __dead2 psci_power_down_wfi(void); void psci_aff_on_finish_entry(void); void psci_aff_suspend_finish_entry(void); void psci_register_spd_pm_hook(const spd_pm_ops_t *); int psci_get_suspend_stateid_by_mpidr(unsigned long); int psci_get_suspend_stateid(void); int psci_get_suspend_afflvl(void); uint64_t psci_smc_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3, uint64_t x4, void *cookie, void *handle, uint64_t flags); /* PSCI setup function */ int32_t psci_setup(void); #endif /*__ASSEMBLY__*/ #endif /* __PSCI_H__ */