/* * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ #ifndef PSCI_H #define PSCI_H #include #include #include /* for PLAT_NUM_PWR_DOMAINS */ #include /* To maintain compatibility for SPDs */ #include /******************************************************************************* * Number of power domains whose state this PSCI implementation can track ******************************************************************************/ #ifdef PLAT_NUM_PWR_DOMAINS #define PSCI_NUM_PWR_DOMAINS PLAT_NUM_PWR_DOMAINS #else #define PSCI_NUM_PWR_DOMAINS (2 * PLATFORM_CORE_COUNT) #endif #define PSCI_NUM_NON_CPU_PWR_DOMAINS (PSCI_NUM_PWR_DOMAINS - \ PLATFORM_CORE_COUNT) /* This is the power level corresponding to a CPU */ #define PSCI_CPU_PWR_LVL U(0) /* * The maximum power level supported by PSCI. Since PSCI CPU_SUSPEND * uses the old power_state parameter format which has 2 bits to specify the * power level, this constant is defined to be 3. */ #define PSCI_MAX_PWR_LVL U(3) /******************************************************************************* * Defines for runtime services function ids ******************************************************************************/ #define PSCI_VERSION U(0x84000000) #define PSCI_CPU_SUSPEND_AARCH32 U(0x84000001) #define PSCI_CPU_SUSPEND_AARCH64 U(0xc4000001) #define PSCI_CPU_OFF U(0x84000002) #define PSCI_CPU_ON_AARCH32 U(0x84000003) #define PSCI_CPU_ON_AARCH64 U(0xc4000003) #define PSCI_AFFINITY_INFO_AARCH32 U(0x84000004) #define PSCI_AFFINITY_INFO_AARCH64 U(0xc4000004) #define PSCI_MIG_AARCH32 U(0x84000005) #define PSCI_MIG_AARCH64 U(0xc4000005) #define PSCI_MIG_INFO_TYPE U(0x84000006) #define PSCI_MIG_INFO_UP_CPU_AARCH32 U(0x84000007) #define PSCI_MIG_INFO_UP_CPU_AARCH64 U(0xc4000007) #define PSCI_SYSTEM_OFF U(0x84000008) #define PSCI_SYSTEM_RESET U(0x84000009) #define PSCI_FEATURES U(0x8400000A) #define PSCI_NODE_HW_STATE_AARCH32 U(0x8400000d) #define PSCI_NODE_HW_STATE_AARCH64 U(0xc400000d) #define PSCI_SYSTEM_SUSPEND_AARCH32 U(0x8400000E) #define PSCI_SYSTEM_SUSPEND_AARCH64 U(0xc400000E) #define PSCI_STAT_RESIDENCY_AARCH32 U(0x84000010) #define PSCI_STAT_RESIDENCY_AARCH64 U(0xc4000010) #define PSCI_STAT_COUNT_AARCH32 U(0x84000011) #define PSCI_STAT_COUNT_AARCH64 U(0xc4000011) #define PSCI_SYSTEM_RESET2_AARCH32 U(0x84000012) #define PSCI_SYSTEM_RESET2_AARCH64 U(0xc4000012) #define PSCI_MEM_PROTECT U(0x84000013) #define PSCI_MEM_CHK_RANGE_AARCH32 U(0x84000014) #define PSCI_MEM_CHK_RANGE_AARCH64 U(0xc4000014) /* * Number of PSCI calls (above) implemented */ #if ENABLE_PSCI_STAT #define PSCI_NUM_CALLS U(22) #else #define PSCI_NUM_CALLS U(18) #endif /* The macros below are used to identify PSCI calls from the SMC function ID */ #define PSCI_FID_MASK U(0xffe0) #define PSCI_FID_VALUE U(0) #define is_psci_fid(_fid) \ (((_fid) & PSCI_FID_MASK) == PSCI_FID_VALUE) /******************************************************************************* * 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 U(0) #if PSCI_EXTENDED_STATE_ID #define PSTATE_VALID_MASK U(0xB0000000) #define PSTATE_TYPE_SHIFT U(30) #define PSTATE_ID_MASK U(0xfffffff) #else #define PSTATE_VALID_MASK U(0xFCFE0000) #define PSTATE_TYPE_SHIFT U(16) #define PSTATE_PWR_LVL_SHIFT U(24) #define PSTATE_ID_MASK U(0xffff) #define PSTATE_PWR_LVL_MASK U(0x3) #define psci_get_pstate_pwrlvl(pstate) (((pstate) >> PSTATE_PWR_LVL_SHIFT) & \ PSTATE_PWR_LVL_MASK) #define psci_make_powerstate(state_id, type, pwrlvl) \ (((state_id) & PSTATE_ID_MASK) << PSTATE_ID_SHIFT) |\ (((type) & PSTATE_TYPE_MASK) << PSTATE_TYPE_SHIFT) |\ (((pwrlvl) & PSTATE_PWR_LVL_MASK) << PSTATE_PWR_LVL_SHIFT) #endif /* __PSCI_EXTENDED_STATE_ID__ */ #define PSTATE_TYPE_STANDBY U(0x0) #define PSTATE_TYPE_POWERDOWN U(0x1) #define PSTATE_TYPE_MASK U(0x1) /******************************************************************************* * PSCI CPU_FEATURES feature flag specific defines ******************************************************************************/ /* Features flags for CPU SUSPEND power state parameter format. Bits [1:1] */ #define FF_PSTATE_SHIFT U(1) #define FF_PSTATE_ORIG U(0) #define FF_PSTATE_EXTENDED U(1) #if PSCI_EXTENDED_STATE_ID #define FF_PSTATE FF_PSTATE_EXTENDED #else #define FF_PSTATE FF_PSTATE_ORIG #endif /* Features flags for CPU SUSPEND OS Initiated mode support. Bits [0:0] */ #define FF_MODE_SUPPORT_SHIFT U(0) #define FF_SUPPORTS_OS_INIT_MODE U(1) /******************************************************************************* * PSCI version ******************************************************************************/ #define PSCI_MAJOR_VER (U(1) << 16) #define PSCI_MINOR_VER U(0x1) /******************************************************************************* * 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 #define PSCI_E_INVALID_ADDRESS -9 #define PSCI_INVALID_MPIDR ~((u_register_t)0) /* * SYSTEM_RESET2 macros */ #define PSCI_RESET2_TYPE_VENDOR_SHIFT U(31) #define PSCI_RESET2_TYPE_VENDOR (U(1) << PSCI_RESET2_TYPE_VENDOR_SHIFT) #define PSCI_RESET2_TYPE_ARCH (U(0) << PSCI_RESET2_TYPE_VENDOR_SHIFT) #define PSCI_RESET2_SYSTEM_WARM_RESET (PSCI_RESET2_TYPE_ARCH | U(0)) #ifndef __ASSEMBLY__ #include /* Function to help build the psci capabilities bitfield */ static inline unsigned int define_psci_cap(unsigned int x) { return U(1) << (x & U(0x1f)); } /* Power state helper functions */ static inline unsigned int psci_get_pstate_id(unsigned int power_state) { return ((power_state) >> PSTATE_ID_SHIFT) & PSTATE_ID_MASK; } static inline unsigned int psci_get_pstate_type(unsigned int power_state) { return ((power_state) >> PSTATE_TYPE_SHIFT) & PSTATE_TYPE_MASK; } static inline unsigned int psci_check_power_state(unsigned int power_state) { return ((power_state) & PSTATE_VALID_MASK); } /* * These are the states reported by the PSCI_AFFINITY_INFO API for the specified * CPU. The definitions of these states can be found in Section 5.7.1 in the * PSCI specification (ARM DEN 0022C). */ typedef enum { AFF_STATE_ON = U(0), AFF_STATE_OFF = U(1), AFF_STATE_ON_PENDING = U(2) } aff_info_state_t; /* * These are the power states reported by PSCI_NODE_HW_STATE API for the * specified CPU. The definitions of these states can be found in Section 5.15.3 * of PSCI specification (ARM DEN 0022C). */ #define HW_ON 0 #define HW_OFF 1 #define HW_STANDBY 2 /* * Macro to represent invalid affinity level within PSCI. */ #define PSCI_INVALID_PWR_LVL (PLAT_MAX_PWR_LVL + U(1)) /* * Type for representing the local power state at a particular level. */ typedef uint8_t plat_local_state_t; /* The local state macro used to represent RUN state. */ #define PSCI_LOCAL_STATE_RUN U(0) /* * Function to test whether the plat_local_state is RUN state */ static inline int is_local_state_run(unsigned int plat_local_state) { return (plat_local_state == PSCI_LOCAL_STATE_RUN) ? 1 : 0; } /* * Function to test whether the plat_local_state is RETENTION state */ static inline int is_local_state_retn(unsigned int plat_local_state) { return ((plat_local_state > PSCI_LOCAL_STATE_RUN) && (plat_local_state <= PLAT_MAX_RET_STATE)) ? 1 : 0; } /* * Function to test whether the plat_local_state is OFF state */ static inline int is_local_state_off(unsigned int plat_local_state) { return ((plat_local_state > PLAT_MAX_RET_STATE) && (plat_local_state <= PLAT_MAX_OFF_STATE)) ? 1 : 0; } /***************************************************************************** * This data structure defines the representation of the power state parameter * for its exchange between the generic PSCI code and the platform port. For * example, it is used by the platform port to specify the requested power * states during a power management operation. It is used by the generic code to * inform the platform about the target power states that each level should * enter. ****************************************************************************/ typedef struct psci_power_state { /* * The pwr_domain_state[] stores the local power state at each level * for the CPU. */ plat_local_state_t pwr_domain_state[PLAT_MAX_PWR_LVL + U(1)]; } psci_power_state_t; /******************************************************************************* * 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 { /* State as seen by PSCI Affinity Info API */ aff_info_state_t aff_info_state; /* * Highest power level which takes part in a power management * operation. */ unsigned int target_pwrlvl; /* The local power state of this CPU */ plat_local_state_t local_state; } psci_cpu_data_t; /******************************************************************************* * Structure populated by platform specific code to export routines which * perform common low level power management functions ******************************************************************************/ typedef struct plat_psci_ops { void (*cpu_standby)(plat_local_state_t cpu_state); int (*pwr_domain_on)(u_register_t mpidr); void (*pwr_domain_off)(const psci_power_state_t *target_state); void (*pwr_domain_suspend_pwrdown_early)( const psci_power_state_t *target_state); void (*pwr_domain_suspend)(const psci_power_state_t *target_state); 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, psci_power_state_t *req_state); int (*validate_ns_entrypoint)(uintptr_t ns_entrypoint); void (*get_sys_suspend_power_state)( psci_power_state_t *req_state); int (*get_pwr_lvl_state_idx)(plat_local_state_t pwr_domain_state, int pwrlvl); int (*translate_power_state_by_mpidr)(u_register_t mpidr, unsigned int power_state, psci_power_state_t *output_state); int (*get_node_hw_state)(u_register_t mpidr, unsigned int power_level); int (*mem_protect_chk)(uintptr_t base, u_register_t length); int (*read_mem_protect)(int *val); int (*write_mem_protect)(int val); int (*system_reset2)(int is_vendor, int reset_type, u_register_t cookie); } plat_psci_ops_t; /******************************************************************************* * Function & Data prototypes ******************************************************************************/ unsigned int psci_version(void); int psci_cpu_on(u_register_t target_cpu, uintptr_t entrypoint, u_register_t context_id); int psci_cpu_suspend(unsigned int power_state, uintptr_t entrypoint, u_register_t context_id); int psci_system_suspend(uintptr_t entrypoint, u_register_t context_id); int psci_cpu_off(void); int psci_affinity_info(u_register_t target_affinity, unsigned int lowest_affinity_level); int psci_migrate(u_register_t target_cpu); int psci_migrate_info_type(void); u_register_t psci_migrate_info_up_cpu(void); int psci_node_hw_state(u_register_t target_cpu, unsigned int power_level); int psci_features(unsigned int psci_fid); void __dead2 psci_power_down_wfi(void); void psci_arch_setup(void); /* * The below API is deprecated. This is now replaced by bl31_warmboot_entry in * AArch64. */ void psci_entrypoint(void) __deprecated; #endif /*__ASSEMBLY__*/ #endif /* PSCI_H */