1bdd2596dSAchin Gupta /* 2bdd2596dSAchin Gupta * Copyright (c) 2019-2020, ARM Limited and Contributors. All rights reserved. 3bdd2596dSAchin Gupta * 4bdd2596dSAchin Gupta * SPDX-License-Identifier: BSD-3-Clause 5bdd2596dSAchin Gupta */ 6bdd2596dSAchin Gupta 7bdd2596dSAchin Gupta #ifndef SPMD_PRIVATE_H 8bdd2596dSAchin Gupta #define SPMD_PRIVATE_H 9bdd2596dSAchin Gupta 10bdd2596dSAchin Gupta #include <context.h> 11bdd2596dSAchin Gupta 12bdd2596dSAchin Gupta /******************************************************************************* 13bdd2596dSAchin Gupta * Constants that allow assembler code to preserve callee-saved registers of the 14bdd2596dSAchin Gupta * C runtime context while performing a security state switch. 15bdd2596dSAchin Gupta ******************************************************************************/ 16bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X19 0x0 17bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X20 0x8 18bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X21 0x10 19bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X22 0x18 20bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X23 0x20 21bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X24 0x28 22bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X25 0x30 23bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X26 0x38 24bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X27 0x40 25bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X28 0x48 26bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X29 0x50 27bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X30 0x58 28bdd2596dSAchin Gupta 29bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_SIZE 0x60 30bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_ENTRIES (SPMD_C_RT_CTX_SIZE >> DWORD_SHIFT) 31bdd2596dSAchin Gupta 32bdd2596dSAchin Gupta #ifndef __ASSEMBLER__ 33662af36dSJ-Alves #include <services/ffa_svc.h> 34bdd2596dSAchin Gupta #include <stdint.h> 35bdd2596dSAchin Gupta 36bdd2596dSAchin Gupta typedef enum spmc_state { 37bdd2596dSAchin Gupta SPMC_STATE_RESET = 0, 38*9dcf63ddSOlivier Deprez SPMC_STATE_OFF, 39*9dcf63ddSOlivier Deprez SPMC_STATE_ON_PENDING, 40*9dcf63ddSOlivier Deprez SPMC_STATE_ON 41bdd2596dSAchin Gupta } spmc_state_t; 42bdd2596dSAchin Gupta 43bdd2596dSAchin Gupta /* 44bdd2596dSAchin Gupta * Data structure used by the SPM dispatcher (SPMD) in EL3 to track context of 45bdd2596dSAchin Gupta * the SPM core (SPMC) at the next lower EL. 46bdd2596dSAchin Gupta */ 47bdd2596dSAchin Gupta typedef struct spmd_spm_core_context { 48bdd2596dSAchin Gupta uint64_t c_rt_ctx; 49bdd2596dSAchin Gupta cpu_context_t cpu_ctx; 50bdd2596dSAchin Gupta spmc_state_t state; 51bdd2596dSAchin Gupta } spmd_spm_core_context_t; 52bdd2596dSAchin Gupta 53bdd2596dSAchin Gupta /* 54662af36dSJ-Alves * Reserve ID for NS physical FFA Endpoint. 55ac03ac5eSMax Shvetsov */ 56662af36dSJ-Alves #define FFA_NS_ENDPOINT_ID U(0) 57ac03ac5eSMax Shvetsov 58662af36dSJ-Alves /* Mask and shift to check valid secure FFA Endpoint ID. */ 5952696946SOlivier Deprez #define SPMC_SECURE_ID_MASK U(1) 6052696946SOlivier Deprez #define SPMC_SECURE_ID_SHIFT U(15) 61ac03ac5eSMax Shvetsov 6252696946SOlivier Deprez /* Functions used to enter/exit SPMC synchronously */ 63bdd2596dSAchin Gupta uint64_t spmd_spm_core_sync_entry(spmd_spm_core_context_t *ctx); 64bdd2596dSAchin Gupta __dead2 void spmd_spm_core_sync_exit(uint64_t rc); 65bdd2596dSAchin Gupta 66bdd2596dSAchin Gupta /* Assembly helpers */ 67bdd2596dSAchin Gupta uint64_t spmd_spm_core_enter(uint64_t *c_rt_ctx); 68bdd2596dSAchin Gupta void __dead2 spmd_spm_core_exit(uint64_t c_rt_ctx, uint64_t ret); 69bdd2596dSAchin Gupta 70c0267cc9SOlivier Deprez /* SPMC entry point information helper */ 71c0267cc9SOlivier Deprez entry_point_info_t *spmd_spmc_ep_info_get(void); 72c0267cc9SOlivier Deprez 7352696946SOlivier Deprez /* SPMC context on current CPU get helper */ 7452696946SOlivier Deprez spmd_spm_core_context_t *spmd_get_context(void); 7552696946SOlivier Deprez 76bdd2596dSAchin Gupta #endif /* __ASSEMBLER__ */ 77bdd2596dSAchin Gupta 78bdd2596dSAchin Gupta #endif /* SPMD_PRIVATE_H */ 79