arm-smccc.h

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/*
 * Copyright 2020 Carlo Caione <[email protected]>
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_ARCH_ARM64_SMCCC_H_
#define ZEPHYR_INCLUDE_ARCH_ARM64_SMCCC_H_
 
/*
 * Result from SMC/HVC call
 * @a0-a7 result values from registers 0 to 7
 */
struct arm_smccc_res {
        unsigned long a0;
        unsigned long a1;
        unsigned long a2;
        unsigned long a3;
        unsigned long a4;
        unsigned long a5;
        unsigned long a6;
        unsigned long a7;
};
 
typedef struct arm_smccc_res arm_smccc_res_t;
 
enum arm_smccc_conduit {
        SMCCC_CONDUIT_NONE,
        SMCCC_CONDUIT_SMC,
        SMCCC_CONDUIT_HVC,
};
 
/*
 * @brief Make HVC calls
 *
 * @param a0 function identifier
 * @param a1-a7 parameters registers
 * @param res results
 */
void arm_smccc_hvc(unsigned long a0, unsigned long a1,
                   unsigned long a2, unsigned long a3,
                   unsigned long a4, unsigned long a5,
                   unsigned long a6, unsigned long a7,
                   struct arm_smccc_res *res);
 
/*
 * @brief Make SMC calls
 *
 * @param a0 function identifier
 * @param a1-a7 parameters registers
 * @param res results
 */
void arm_smccc_smc(unsigned long a0, unsigned long a1,
                   unsigned long a2, unsigned long a3,
                   unsigned long a4, unsigned long a5,
                   unsigned long a6, unsigned long a7,
                   struct arm_smccc_res *res);
 
#endif /* ZEPHYR_INCLUDE_ARCH_ARM64_SMCCC_H_ */