Line data    Source code

       1            0 : /*
       2              :  * Copyright 2020 Carlo Caione <ccaione@baylibre.com>
       3              :  *
       4              :  * SPDX-License-Identifier: Apache-2.0
       5              :  */
       6              : 
       7              : #ifndef ZEPHYR_INCLUDE_ARCH_ARM64_SMCCC_H_
       8              : #define ZEPHYR_INCLUDE_ARCH_ARM64_SMCCC_H_
       9              : 
      10              : /*
      11              :  * Result from SMC/HVC call
      12              :  * @a0-a7 result values from registers 0 to 7
      13              :  */
      14            0 : struct arm_smccc_res {
      15            0 :         unsigned long a0;
      16            0 :         unsigned long a1;
      17            0 :         unsigned long a2;
      18            0 :         unsigned long a3;
      19            0 :         unsigned long a4;
      20            0 :         unsigned long a5;
      21            0 :         unsigned long a6;
      22            0 :         unsigned long a7;
      23              : };
      24              : 
      25            0 : typedef struct arm_smccc_res arm_smccc_res_t;
      26              : 
      27            0 : enum arm_smccc_conduit {
      28              :         SMCCC_CONDUIT_NONE,
      29              :         SMCCC_CONDUIT_SMC,
      30              :         SMCCC_CONDUIT_HVC,
      31              : };
      32              : 
      33              : /*
      34              :  * @brief Make HVC calls
      35              :  *
      36              :  * @param a0 function identifier
      37              :  * @param a1-a7 parameters registers
      38              :  * @param res results
      39              :  */
      40            0 : void arm_smccc_hvc(unsigned long a0, unsigned long a1,
      41              :                    unsigned long a2, unsigned long a3,
      42              :                    unsigned long a4, unsigned long a5,
      43              :                    unsigned long a6, unsigned long a7,
      44              :                    struct arm_smccc_res *res);
      45              : 
      46              : /*
      47              :  * @brief Make SMC calls
      48              :  *
      49              :  * @param a0 function identifier
      50              :  * @param a1-a7 parameters registers
      51              :  * @param res results
      52              :  */
      53            0 : void arm_smccc_smc(unsigned long a0, unsigned long a1,
      54              :                    unsigned long a2, unsigned long a3,
      55              :                    unsigned long a4, unsigned long a5,
      56              :                    unsigned long a6, unsigned long a7,
      57              :                    struct arm_smccc_res *res);
      58              : 
      59              : #endif /* ZEPHYR_INCLUDE_ARCH_ARM64_SMCCC_H_ */