1 /* 2 * Copyright (c) 2019-2022, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #ifndef SPMD_PRIVATE_H 8 #define SPMD_PRIVATE_H 9 10 #include <context.h> 11 12 /******************************************************************************* 13 * Constants that allow assembler code to preserve callee-saved registers of the 14 * C runtime context while performing a security state switch. 15 ******************************************************************************/ 16 #define SPMD_C_RT_CTX_X19 0x0 17 #define SPMD_C_RT_CTX_X20 0x8 18 #define SPMD_C_RT_CTX_X21 0x10 19 #define SPMD_C_RT_CTX_X22 0x18 20 #define SPMD_C_RT_CTX_X23 0x20 21 #define SPMD_C_RT_CTX_X24 0x28 22 #define SPMD_C_RT_CTX_X25 0x30 23 #define SPMD_C_RT_CTX_X26 0x38 24 #define SPMD_C_RT_CTX_X27 0x40 25 #define SPMD_C_RT_CTX_X28 0x48 26 #define SPMD_C_RT_CTX_X29 0x50 27 #define SPMD_C_RT_CTX_X30 0x58 28 29 #define SPMD_C_RT_CTX_SIZE 0x60 30 #define SPMD_C_RT_CTX_ENTRIES (SPMD_C_RT_CTX_SIZE >> DWORD_SHIFT) 31 32 #ifndef __ASSEMBLER__ 33 #include <stdint.h> 34 #include <lib/psci/psci_lib.h> 35 #include <plat/common/platform.h> 36 #include <services/ffa_svc.h> 37 38 typedef enum spmc_state { 39 SPMC_STATE_RESET = 0, 40 SPMC_STATE_OFF, 41 SPMC_STATE_ON_PENDING, 42 SPMC_STATE_ON 43 } spmc_state_t; 44 45 /* 46 * Data structure used by the SPM dispatcher (SPMD) in EL3 to track context of 47 * the SPM core (SPMC) at the next lower EL. 48 */ 49 typedef struct spmd_spm_core_context { 50 uint64_t c_rt_ctx; 51 cpu_context_t cpu_ctx; 52 spmc_state_t state; 53 bool secure_interrupt_ongoing; 54 } spmd_spm_core_context_t; 55 56 /* 57 * Reserve ID for NS physical FFA Endpoint. 58 */ 59 #define FFA_NS_ENDPOINT_ID U(0) 60 61 /* Define SPMD target function IDs for framework messages to the SPMC */ 62 #define SPMD_FWK_MSG_FFA_VERSION_REQ U(0x8) 63 #define SPMD_FWK_MSG_FFA_VERSION_RESP U(0x9) 64 65 /* Function to build SPMD to SPMC message */ 66 void spmd_build_spmc_message(gp_regs_t *gpregs, uint8_t target, 67 unsigned long long message); 68 69 /* Functions used to enter/exit SPMC synchronously */ 70 uint64_t spmd_spm_core_sync_entry(spmd_spm_core_context_t *ctx); 71 __dead2 void spmd_spm_core_sync_exit(uint64_t rc); 72 73 /* Assembly helpers */ 74 uint64_t spmd_spm_core_enter(uint64_t *c_rt_ctx); 75 void __dead2 spmd_spm_core_exit(uint64_t c_rt_ctx, uint64_t ret); 76 77 /* SPMD SPD power management handlers */ 78 extern const spd_pm_ops_t spmd_pm; 79 80 /* SPMC entry point information helper */ 81 entry_point_info_t *spmd_spmc_ep_info_get(void); 82 83 /* SPMC ID getter */ 84 uint16_t spmd_spmc_id_get(void); 85 86 /* SPMC context on CPU based on mpidr */ 87 spmd_spm_core_context_t *spmd_get_context_by_mpidr(uint64_t mpidr); 88 89 /* SPMC context on current CPU get helper */ 90 spmd_spm_core_context_t *spmd_get_context(void); 91 92 int spmd_pm_secondary_ep_register(uintptr_t entry_point); 93 bool spmd_check_address_in_binary_image(uint64_t address); 94 95 #endif /* __ASSEMBLER__ */ 96 97 #endif /* SPMD_PRIVATE_H */ 98
