1*77c27753SZelalem Aweke /* 2*77c27753SZelalem Aweke * Copyright (c) 2021, ARM Limited and Contributors. All rights reserved. 3*77c27753SZelalem Aweke * 4*77c27753SZelalem Aweke * SPDX-License-Identifier: BSD-3-Clause 5*77c27753SZelalem Aweke */ 6*77c27753SZelalem Aweke 7*77c27753SZelalem Aweke #ifndef RMMD_PRIVATE_H 8*77c27753SZelalem Aweke #define RMMD_PRIVATE_H 9*77c27753SZelalem Aweke 10*77c27753SZelalem Aweke #include <context.h> 11*77c27753SZelalem Aweke 12*77c27753SZelalem Aweke /******************************************************************************* 13*77c27753SZelalem Aweke * Constants that allow assembler code to preserve callee-saved registers of the 14*77c27753SZelalem Aweke * C runtime context while performing a security state switch. 15*77c27753SZelalem Aweke ******************************************************************************/ 16*77c27753SZelalem Aweke #define RMMD_C_RT_CTX_X19 0x0 17*77c27753SZelalem Aweke #define RMMD_C_RT_CTX_X20 0x8 18*77c27753SZelalem Aweke #define RMMD_C_RT_CTX_X21 0x10 19*77c27753SZelalem Aweke #define RMMD_C_RT_CTX_X22 0x18 20*77c27753SZelalem Aweke #define RMMD_C_RT_CTX_X23 0x20 21*77c27753SZelalem Aweke #define RMMD_C_RT_CTX_X24 0x28 22*77c27753SZelalem Aweke #define RMMD_C_RT_CTX_X25 0x30 23*77c27753SZelalem Aweke #define RMMD_C_RT_CTX_X26 0x38 24*77c27753SZelalem Aweke #define RMMD_C_RT_CTX_X27 0x40 25*77c27753SZelalem Aweke #define RMMD_C_RT_CTX_X28 0x48 26*77c27753SZelalem Aweke #define RMMD_C_RT_CTX_X29 0x50 27*77c27753SZelalem Aweke #define RMMD_C_RT_CTX_X30 0x58 28*77c27753SZelalem Aweke 29*77c27753SZelalem Aweke #define RMMD_C_RT_CTX_SIZE 0x60 30*77c27753SZelalem Aweke #define RMMD_C_RT_CTX_ENTRIES (RMMD_C_RT_CTX_SIZE >> DWORD_SHIFT) 31*77c27753SZelalem Aweke 32*77c27753SZelalem Aweke #ifndef __ASSEMBLER__ 33*77c27753SZelalem Aweke #include <stdint.h> 34*77c27753SZelalem Aweke #include <services/rmi_svc.h> 35*77c27753SZelalem Aweke 36*77c27753SZelalem Aweke typedef enum rmm_state { 37*77c27753SZelalem Aweke RMM_STATE_RESET = 0, 38*77c27753SZelalem Aweke RMM_STATE_IDLE 39*77c27753SZelalem Aweke } rmm_state_t; 40*77c27753SZelalem Aweke 41*77c27753SZelalem Aweke /* 42*77c27753SZelalem Aweke * Data structure used by the RMM dispatcher (RMMD) in EL3 to track context of 43*77c27753SZelalem Aweke * the RMM at R-EL2. 44*77c27753SZelalem Aweke */ 45*77c27753SZelalem Aweke typedef struct rmmd_rmm_context { 46*77c27753SZelalem Aweke uint64_t c_rt_ctx; 47*77c27753SZelalem Aweke cpu_context_t cpu_ctx; 48*77c27753SZelalem Aweke rmm_state_t state; 49*77c27753SZelalem Aweke } rmmd_rmm_context_t; 50*77c27753SZelalem Aweke 51*77c27753SZelalem Aweke /* Functions used to enter/exit the RMM synchronously */ 52*77c27753SZelalem Aweke uint64_t rmmd_rmm_sync_entry(rmmd_rmm_context_t *ctx); 53*77c27753SZelalem Aweke __dead2 void rmmd_rmm_sync_exit(uint64_t rc); 54*77c27753SZelalem Aweke 55*77c27753SZelalem Aweke /* Assembly helpers */ 56*77c27753SZelalem Aweke uint64_t rmmd_rmm_enter(uint64_t *c_rt_ctx); 57*77c27753SZelalem Aweke void __dead2 rmmd_rmm_exit(uint64_t c_rt_ctx, uint64_t ret); 58*77c27753SZelalem Aweke 59*77c27753SZelalem Aweke /* Reference to PM ops for the RMMD */ 60*77c27753SZelalem Aweke extern const spd_pm_ops_t rmmd_pm; 61*77c27753SZelalem Aweke 62*77c27753SZelalem Aweke #endif /* __ASSEMBLER__ */ 63*77c27753SZelalem Aweke 64*77c27753SZelalem Aweke #endif /* RMMD_PRIVATE_H */ 65