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/*
* Copyright (c) 2022-2023, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef MTK_SIP_SVC_H
#define MTK_SIP_SVC_H
#include <stdint.h>
#include <lib/smccc.h>
#include <mtk_sip_def.h>
/* SMC function IDs for SiP Service queries */
#define SIP_SVC_CALL_COUNT U(0x8200ff00)
#define SIP_SVC_UID U(0x8200ff01)
/* 0x8200ff02 is reserved */
#define SIP_SVC_VERSION U(0x8200ff03)
/* MediaTek SiP Service Calls version numbers */
#define MTK_SIP_SVC_VERSION_MAJOR U(0x0)
#define MTK_SIP_SVC_VERSION_MINOR U(0x1)
/* Number of MediaTek SiP Calls implemented */
#define MTK_COMMON_SIP_NUM_CALLS U(4)
/* MediaTek SiP Service Calls function IDs */
#define MTK_SIP_SET_AUTHORIZED_SECURE_REG U(0x82000001)
#define SMC_ID_EXPAND_AS_ENUM(_smc_id, _smc_num) \
_smc_id##_AARCH32 = ((SMC_TYPE_FAST << FUNCID_TYPE_SHIFT) | \
((0) << FUNCID_CC_SHIFT) | \
(OEN_SIP_START << FUNCID_OEN_SHIFT) | \
((_smc_num) << FUNCID_NUM_SHIFT)), \
_smc_id##_AARCH64 = ((SMC_TYPE_FAST << FUNCID_TYPE_SHIFT) | \
((1) << FUNCID_CC_SHIFT) | \
(OEN_SIP_START << FUNCID_OEN_SHIFT) | \
((_smc_num) << FUNCID_NUM_SHIFT)),
#define SMC_ID_EXPAND_AS_EXTERN_SMC_INDEX(_smc_id, _smc_num) \
extern short _smc_id##_descriptor_index;
/* Bind SMC handler with SMC ID */
#define DECLARE_SMC_HANDLER(_smc_id, _smc_handler) \
const struct smc_descriptor _smc_id##_descriptor \
__used \
__aligned(sizeof(void *)) \
__section(".mtk_smc_descriptor_pool") = { \
.smc_handler = _smc_handler, \
.smc_name = #_smc_id, \
.smc_id_aarch32 = _smc_id##_AARCH32, \
.smc_id_aarch64 = _smc_id##_AARCH64, \
.smc_descriptor_index = &_smc_id##_descriptor_index \
}
MTK_SIP_SMC_FROM_BL33_TABLE(SMC_ID_EXPAND_AS_EXTERN_SMC_INDEX);
MTK_SIP_SMC_FROM_NS_EL1_TABLE(SMC_ID_EXPAND_AS_EXTERN_SMC_INDEX);
MTK_SIP_SMC_FROM_S_EL1_TABLE(SMC_ID_EXPAND_AS_EXTERN_SMC_INDEX);
/* Expand SiP SMC ID table as enum */
enum {
MTK_SIP_SMC_FROM_BL33_TABLE(SMC_ID_EXPAND_AS_ENUM)
MTK_SIP_SMC_FROM_NS_EL1_TABLE(SMC_ID_EXPAND_AS_ENUM)
MTK_SIP_SMC_FROM_S_EL1_TABLE(SMC_ID_EXPAND_AS_ENUM)
MTK_SIP_SMC_MAX_NUMBER
};
/* MediaTek SiP Calls error code */
enum {
MTK_SIP_E_SUCCESS = 0,
MTK_SIP_E_INVALID_PARAM = -1,
MTK_SIP_E_NOT_SUPPORTED = -2,
MTK_SIP_E_INVALID_RANGE = -3,
MTK_SIP_E_PERMISSION_DENY = -4,
MTK_SIP_E_LOCK_FAIL = -5,
};
struct smccc_res {
uint64_t a1;
uint64_t a2;
uint64_t a3;
};
typedef uintptr_t (*smc_handler_t)(u_register_t,
u_register_t,
u_register_t,
u_register_t,
void *,
struct smccc_res *);
struct smc_descriptor {
smc_handler_t smc_handler;
const uint32_t smc_id_aarch32;
const uint32_t smc_id_aarch64;
const char *smc_name;
short *const smc_descriptor_index;
};
/*
* This function should be implemented in MediaTek SOC directory. It fullfills
* MTK_SIP_SET_AUTHORIZED_SECURE_REG SiP call by checking the sreg with the
* predefined secure register list, if a match was found, set val to sreg.
*
* Return MTK_SIP_E_SUCCESS on success, and MTK_SIP_E_INVALID_PARAM on failure.
*/
uint64_t mt_sip_set_authorized_sreg(uint32_t sreg, uint32_t val);
#endif /* MTK_SIP_SVC_H */
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