1 /* 2 * Copyright (c) 2021-2022, Arm Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #ifndef TRP_PRIVATE_H 8 #define TRP_PRIVATE_H 9 10 /* Definitions to help the assembler access the SMC/ERET args structure */ 11 #define TRP_ARGS_SIZE TRP_ARGS_END 12 #define TRP_ARG0 0x0 13 #define TRP_ARG1 0x8 14 #define TRP_ARG2 0x10 15 #define TRP_ARG3 0x18 16 #define TRP_ARG4 0x20 17 #define TRP_ARG5 0x28 18 #define TRP_ARG6 0x30 19 #define TRP_ARG7 0x38 20 #define TRP_ARGS_END 0x40 21 22 #ifndef __ASSEMBLER__ 23 24 #include <stdint.h> 25 26 /* Data structure to hold SMC arguments */ 27 typedef struct trp_args { 28 uint64_t regs[TRP_ARGS_END >> 3]; 29 } __aligned(CACHE_WRITEBACK_GRANULE) trp_args_t; 30 31 #define write_trp_arg(args, offset, val) (((args)->regs[offset >> 3]) \ 32 = val) 33 /* RMI SMC64 FIDs handled by the TRP */ 34 #define RMI_RMM_REQ_VERSION SMC64_RMI_FID(U(0)) 35 #define RMI_RMM_GRANULE_DELEGATE SMC64_RMI_FID(U(1)) 36 #define RMI_RMM_GRANULE_UNDELEGATE SMC64_RMI_FID(U(2)) 37 38 /* Definitions for RMI VERSION */ 39 #define RMI_ABI_VERSION_MAJOR U(0x0) 40 #define RMI_ABI_VERSION_MINOR U(0x0) 41 #define RMI_ABI_VERSION ((RMI_ABI_VERSION_MAJOR << 16) | \ 42 RMI_ABI_VERSION_MINOR) 43 44 /* Helper to issue SMC calls to BL31 */ 45 uint64_t trp_smc(trp_args_t *); 46 47 /* The main function to executed only by Primary CPU */ 48 void trp_main(void); 49 50 /* Setup TRP. Executed only by Primary CPU */ 51 void trp_setup(void); 52 53 #endif /* __ASSEMBLER__ */ 54 #endif /* TRP_PRIVATE_H */ 55