blob: ec3f48ea28f55098212cf537ff3096a86239c1ed [file] [log] [blame]
/*
* 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 <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 {
uint64_t c_rt_ctx;
cpu_context_t cpu_ctx;
xlat_ctx_t *xlat_ctx_handle;
sp_state_t state;
spinlock_t state_lock;
} 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);
void spm_sp_setup(sp_context_t *sp_ctx);
xlat_ctx_t *spm_get_sp_xlat_context(void);
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);
#endif /* __ASSEMBLY__ */
#endif /* SPM_PRIVATE_H */