1 /* 2 * Copyright (c) 2017-2019, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #ifndef SPM_MM_PRIVATE_H 8 #define SPM_MM_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 SP_C_RT_CTX_X19 0x0 17 #define SP_C_RT_CTX_X20 0x8 18 #define SP_C_RT_CTX_X21 0x10 19 #define SP_C_RT_CTX_X22 0x18 20 #define SP_C_RT_CTX_X23 0x20 21 #define SP_C_RT_CTX_X24 0x28 22 #define SP_C_RT_CTX_X25 0x30 23 #define SP_C_RT_CTX_X26 0x38 24 #define SP_C_RT_CTX_X27 0x40 25 #define SP_C_RT_CTX_X28 0x48 26 #define SP_C_RT_CTX_X29 0x50 27 #define SP_C_RT_CTX_X30 0x58 28 29 #define SP_C_RT_CTX_SIZE 0x60 30 #define SP_C_RT_CTX_ENTRIES (SP_C_RT_CTX_SIZE >> DWORD_SHIFT) 31 32 #ifndef __ASSEMBLER__ 33 34 #include <stdint.h> 35 36 #include <lib/spinlock.h> 37 #include <lib/xlat_tables/xlat_tables_v2.h> 38 39 typedef enum sp_state { 40 SP_STATE_RESET = 0, 41 SP_STATE_IDLE, 42 SP_STATE_BUSY 43 } sp_state_t; 44 45 typedef struct sp_context { 46 uint64_t c_rt_ctx; 47 cpu_context_t cpu_ctx; 48 xlat_ctx_t *xlat_ctx_handle; 49 50 sp_state_t state; 51 spinlock_t state_lock; 52 } sp_context_t; 53 54 /* Assembly helpers */ 55 uint64_t spm_secure_partition_enter(uint64_t *c_rt_ctx); 56 void __dead2 spm_secure_partition_exit(uint64_t c_rt_ctx, uint64_t ret); 57 58 void spm_sp_setup(sp_context_t *sp_ctx); 59 60 xlat_ctx_t *spm_get_sp_xlat_context(void); 61 62 int32_t spm_memory_attributes_get_smc_handler(sp_context_t *sp_ctx, 63 uintptr_t base_va); 64 int spm_memory_attributes_set_smc_handler(sp_context_t *sp_ctx, 65 u_register_t page_address, 66 u_register_t pages_count, 67 u_register_t smc_attributes); 68 69 #endif /* __ASSEMBLER__ */ 70 71 #endif /* SPM_MM_PRIVATE_H */ 72