1*50a3056aSZelalem Aweke /* 2*50a3056aSZelalem Aweke * Copyright (c) 2021, Arm Limited and Contributors. All rights reserved. 3*50a3056aSZelalem Aweke * 4*50a3056aSZelalem Aweke * SPDX-License-Identifier: BSD-3-Clause 5*50a3056aSZelalem Aweke */ 6*50a3056aSZelalem Aweke 7*50a3056aSZelalem Aweke #ifndef TRP_PRIVATE_H 8*50a3056aSZelalem Aweke #define TRP_PRIVATE_H 9*50a3056aSZelalem Aweke 10*50a3056aSZelalem Aweke /* Definitions to help the assembler access the SMC/ERET args structure */ 11*50a3056aSZelalem Aweke #define TRP_ARGS_SIZE TRP_ARGS_END 12*50a3056aSZelalem Aweke #define TRP_ARG0 0x0 13*50a3056aSZelalem Aweke #define TRP_ARG1 0x8 14*50a3056aSZelalem Aweke #define TRP_ARG2 0x10 15*50a3056aSZelalem Aweke #define TRP_ARG3 0x18 16*50a3056aSZelalem Aweke #define TRP_ARG4 0x20 17*50a3056aSZelalem Aweke #define TRP_ARG5 0x28 18*50a3056aSZelalem Aweke #define TRP_ARG6 0x30 19*50a3056aSZelalem Aweke #define TRP_ARG7 0x38 20*50a3056aSZelalem Aweke #define TRP_ARGS_END 0x40 21*50a3056aSZelalem Aweke 22*50a3056aSZelalem Aweke #ifndef __ASSEMBLER__ 23*50a3056aSZelalem Aweke 24*50a3056aSZelalem Aweke #include <stdint.h> 25*50a3056aSZelalem Aweke 26*50a3056aSZelalem Aweke /* Data structure to hold SMC arguments */ 27*50a3056aSZelalem Aweke typedef struct trp_args { 28*50a3056aSZelalem Aweke uint64_t regs[TRP_ARGS_END >> 3]; 29*50a3056aSZelalem Aweke } __aligned(CACHE_WRITEBACK_GRANULE) trp_args_t; 30*50a3056aSZelalem Aweke 31*50a3056aSZelalem Aweke #define write_trp_arg(args, offset, val) (((args)->regs[offset >> 3]) \ 32*50a3056aSZelalem Aweke = val) 33*50a3056aSZelalem Aweke 34*50a3056aSZelalem Aweke /* Definitions for RMI VERSION */ 35*50a3056aSZelalem Aweke #define RMI_ABI_VERSION_MAJOR U(0x0) 36*50a3056aSZelalem Aweke #define RMI_ABI_VERSION_MINOR U(0x0) 37*50a3056aSZelalem Aweke #define RMI_ABI_VERSION ((RMI_ABI_VERSION_MAJOR << 16) | \ 38*50a3056aSZelalem Aweke RMI_ABI_VERSION_MINOR) 39*50a3056aSZelalem Aweke 40*50a3056aSZelalem Aweke /* Helper to issue SMC calls to BL31 */ 41*50a3056aSZelalem Aweke uint64_t trp_smc(trp_args_t *); 42*50a3056aSZelalem Aweke 43*50a3056aSZelalem Aweke /* The main function to executed only by Primary CPU */ 44*50a3056aSZelalem Aweke void trp_main(void); 45*50a3056aSZelalem Aweke 46*50a3056aSZelalem Aweke /* Setup TRP. Executed only by Primary CPU */ 47*50a3056aSZelalem Aweke void trp_setup(void); 48*50a3056aSZelalem Aweke 49*50a3056aSZelalem Aweke #endif /* __ASSEMBLER__ */ 50*50a3056aSZelalem Aweke #endif /* TRP_PRIVATE_H */ 51