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/*
* Copyright (c) 2021-2022, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef RMMD_PRIVATE_H
#define RMMD_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 RMMD_C_RT_CTX_X19 0x0
#define RMMD_C_RT_CTX_X20 0x8
#define RMMD_C_RT_CTX_X21 0x10
#define RMMD_C_RT_CTX_X22 0x18
#define RMMD_C_RT_CTX_X23 0x20
#define RMMD_C_RT_CTX_X24 0x28
#define RMMD_C_RT_CTX_X25 0x30
#define RMMD_C_RT_CTX_X26 0x38
#define RMMD_C_RT_CTX_X27 0x40
#define RMMD_C_RT_CTX_X28 0x48
#define RMMD_C_RT_CTX_X29 0x50
#define RMMD_C_RT_CTX_X30 0x58
#define RMMD_C_RT_CTX_SIZE 0x60
#define RMMD_C_RT_CTX_ENTRIES (RMMD_C_RT_CTX_SIZE >> DWORD_SHIFT)
#ifndef __ASSEMBLER__
#include <stdint.h>
/*
* Data structure used by the RMM dispatcher (RMMD) in EL3 to track context of
* the RMM at R-EL2.
*/
typedef struct rmmd_rmm_context {
uint64_t c_rt_ctx;
cpu_context_t cpu_ctx;
} rmmd_rmm_context_t;
/* Functions used to enter/exit the RMM synchronously */
uint64_t rmmd_rmm_sync_entry(rmmd_rmm_context_t *ctx);
__dead2 void rmmd_rmm_sync_exit(uint64_t rc);
/* Functions implementing attestation utilities for RMM */
int rmmd_attest_get_platform_token(uint64_t buf_pa, uint64_t *buf_size,
uint64_t c_size);
int rmmd_attest_get_signing_key(uint64_t buf_pa, uint64_t *buf_size,
uint64_t ecc_curve);
/* Assembly helpers */
uint64_t rmmd_rmm_enter(uint64_t *c_rt_ctx);
void __dead2 rmmd_rmm_exit(uint64_t c_rt_ctx, uint64_t ret);
/* Reference to PM ops for the RMMD */
extern const spd_pm_ops_t rmmd_pm;
#endif /* __ASSEMBLER__ */
#endif /* RMMD_PRIVATE_H */
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