blob: 61b479a8bcc6d3a1269f424cf5a866fd9ace766f [file] [log] [blame]
/*
* Copyright (c) 2019-2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef SPMD_PRIVATE_H
#define SPMD_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 SPMD_C_RT_CTX_X19 0x0
#define SPMD_C_RT_CTX_X20 0x8
#define SPMD_C_RT_CTX_X21 0x10
#define SPMD_C_RT_CTX_X22 0x18
#define SPMD_C_RT_CTX_X23 0x20
#define SPMD_C_RT_CTX_X24 0x28
#define SPMD_C_RT_CTX_X25 0x30
#define SPMD_C_RT_CTX_X26 0x38
#define SPMD_C_RT_CTX_X27 0x40
#define SPMD_C_RT_CTX_X28 0x48
#define SPMD_C_RT_CTX_X29 0x50
#define SPMD_C_RT_CTX_X30 0x58
#define SPMD_C_RT_CTX_SIZE 0x60
#define SPMD_C_RT_CTX_ENTRIES (SPMD_C_RT_CTX_SIZE >> DWORD_SHIFT)
#ifndef __ASSEMBLER__
#include <services/spci_svc.h>
#include <stdint.h>
/*
* Convert a function no. in a FID to a bit position. All function nos. are
* between 0 and 0x1f
*/
#define SPCI_FNO_TO_BIT_POS(_fid) (1 << ((_fid) & U(0x1f)))
typedef enum spmc_state {
SPMC_STATE_RESET = 0,
SPMC_STATE_IDLE
} spmc_state_t;
/*
* Data structure used by the SPM dispatcher (SPMD) in EL3 to track context of
* the SPM core (SPMC) at the next lower EL.
*/
typedef struct spmd_spm_core_context {
uint64_t c_rt_ctx;
cpu_context_t cpu_ctx;
spmc_state_t state;
} spmd_spm_core_context_t;
/*
* Data structure used by the SPM dispatcher (SPMD) in EL3 to track sequence of
* SPCI calls from lower ELs.
*
* next_smc_bit_map: Per-cpu bit map of SMCs from each world that are expected
* next.
*/
typedef struct spmd_spci_context {
uint32_t next_smc_bit_map[2];
} spmd_spci_context_t;
/* Functions used to enter/exit a Secure Partition synchronously */
uint64_t spmd_spm_core_sync_entry(spmd_spm_core_context_t *ctx);
__dead2 void spmd_spm_core_sync_exit(uint64_t rc);
/* Assembly helpers */
uint64_t spmd_spm_core_enter(uint64_t *c_rt_ctx);
void __dead2 spmd_spm_core_exit(uint64_t c_rt_ctx, uint64_t ret);
#endif /* __ASSEMBLER__ */
#endif /* SPMD_PRIVATE_H */