| /* |
| * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #ifndef SPM_PRIVATE_H |
| #define SPM_PRIVATE_H |
| |
| #include <context.h> |
| |
| /******************************************************************************* |
| * Constants that allow assembler code to preserve callee-saved registers of the |
| * C runtime context while performing a security state switch. |
| ******************************************************************************/ |
| #define SP_C_RT_CTX_X19 0x0 |
| #define SP_C_RT_CTX_X20 0x8 |
| #define SP_C_RT_CTX_X21 0x10 |
| #define SP_C_RT_CTX_X22 0x18 |
| #define SP_C_RT_CTX_X23 0x20 |
| #define SP_C_RT_CTX_X24 0x28 |
| #define SP_C_RT_CTX_X25 0x30 |
| #define SP_C_RT_CTX_X26 0x38 |
| #define SP_C_RT_CTX_X27 0x40 |
| #define SP_C_RT_CTX_X28 0x48 |
| #define SP_C_RT_CTX_X29 0x50 |
| #define SP_C_RT_CTX_X30 0x58 |
| |
| #define SP_C_RT_CTX_SIZE 0x60 |
| #define SP_C_RT_CTX_ENTRIES (SP_C_RT_CTX_SIZE >> DWORD_SHIFT) |
| |
| #ifndef __ASSEMBLY__ |
| |
| #include <spinlock.h> |
| #include <sp_res_desc.h> |
| #include <stdint.h> |
| #include <xlat_tables_v2.h> |
| |
| typedef enum sp_state { |
| SP_STATE_RESET = 0, |
| SP_STATE_IDLE, |
| SP_STATE_BUSY |
| } sp_state_t; |
| |
| typedef struct sp_context { |
| /* 1 if the partition is present, 0 otherwise */ |
| int is_present; |
| |
| /* Location of the image in physical memory */ |
| unsigned long long image_base; |
| size_t image_size; |
| |
| uint64_t c_rt_ctx; |
| cpu_context_t cpu_ctx; |
| xlat_ctx_t *xlat_ctx_handle; |
| struct sp_res_desc rd; |
| |
| sp_state_t state; |
| spinlock_t state_lock; |
| |
| /* Base and size of the shared SPM<->SP buffer */ |
| uintptr_t spm_sp_buffer_base; |
| size_t spm_sp_buffer_size; |
| } sp_context_t; |
| |
| /* Assembly helpers */ |
| uint64_t spm_secure_partition_enter(uint64_t *c_rt_ctx); |
| void __dead2 spm_secure_partition_exit(uint64_t c_rt_ctx, uint64_t ret); |
| |
| /* Secure Partition setup */ |
| void spm_sp_setup(sp_context_t *sp_ctx); |
| |
| /* Functions related to the translation tables management */ |
| xlat_ctx_t *spm_sp_xlat_context_alloc(void); |
| void sp_map_memory_regions(sp_context_t *sp_ctx); |
| |
| int32_t spm_memory_attributes_get_smc_handler(sp_context_t *sp_ctx, |
| uintptr_t base_va); |
| int spm_memory_attributes_set_smc_handler(sp_context_t *sp_ctx, |
| u_register_t page_address, |
| u_register_t pages_count, |
| u_register_t smc_attributes); |
| |
| /* Functions to handle Secure Partition contexts */ |
| void spm_cpu_set_sp_ctx(unsigned int linear_id, sp_context_t *sp_ctx); |
| sp_context_t *spm_cpu_get_sp_ctx(unsigned int linear_id); |
| sp_context_t *spm_sp_get_by_uuid(const uint32_t (*svc_uuid)[4]); |
| |
| #endif /* __ASSEMBLY__ */ |
| |
| #endif /* SPM_PRIVATE_H */ |