1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 #ifndef _ASMRISCV_SBI_H_ 3 #define _ASMRISCV_SBI_H_ 4 5 #define SBI_SUCCESS 0 6 #define SBI_ERR_FAILURE -1 7 #define SBI_ERR_NOT_SUPPORTED -2 8 #define SBI_ERR_INVALID_PARAM -3 9 #define SBI_ERR_DENIED -4 10 #define SBI_ERR_INVALID_ADDRESS -5 11 #define SBI_ERR_ALREADY_AVAILABLE -6 12 #define SBI_ERR_ALREADY_STARTED -7 13 #define SBI_ERR_ALREADY_STOPPED -8 14 #define SBI_ERR_NO_SHMEM -9 15 #define SBI_ERR_INVALID_STATE -10 16 #define SBI_ERR_BAD_RANGE -11 17 #define SBI_ERR_TIMEOUT -12 18 #define SBI_ERR_IO -13 19 #define SBI_ERR_DENIED_LOCKED -14 20 21 /* SBI spec version fields */ 22 #define SBI_SPEC_VERSION_MAJOR_SHIFT 24 23 #define SBI_SPEC_VERSION_MAJOR_MASK 0x7f 24 #define SBI_SPEC_VERSION_MINOR_MASK 0xffffff 25 #define SBI_SPEC_VERSION_MASK ((SBI_SPEC_VERSION_MAJOR_MASK << SBI_SPEC_VERSION_MAJOR_SHIFT) | \ 26 SBI_SPEC_VERSION_MINOR_MASK) 27 28 #ifndef __ASSEMBLER__ 29 #include <cpumask.h> 30 31 enum sbi_ext_id { 32 SBI_EXT_BASE = 0x10, 33 SBI_EXT_TIME = 0x54494d45, 34 SBI_EXT_IPI = 0x735049, 35 SBI_EXT_HSM = 0x48534d, 36 SBI_EXT_SRST = 0x53525354, 37 SBI_EXT_DBCN = 0x4442434E, 38 SBI_EXT_SUSP = 0x53555350, 39 SBI_EXT_FWFT = 0x46574654, 40 }; 41 42 enum sbi_ext_base_fid { 43 SBI_EXT_BASE_GET_SPEC_VERSION = 0, 44 SBI_EXT_BASE_GET_IMP_ID, 45 SBI_EXT_BASE_GET_IMP_VERSION, 46 SBI_EXT_BASE_PROBE_EXT, 47 SBI_EXT_BASE_GET_MVENDORID, 48 SBI_EXT_BASE_GET_MARCHID, 49 SBI_EXT_BASE_GET_MIMPID, 50 }; 51 52 enum sbi_ext_hsm_fid { 53 SBI_EXT_HSM_HART_START = 0, 54 SBI_EXT_HSM_HART_STOP, 55 SBI_EXT_HSM_HART_STATUS, 56 SBI_EXT_HSM_HART_SUSPEND, 57 }; 58 59 enum sbi_ext_time_fid { 60 SBI_EXT_TIME_SET_TIMER = 0, 61 }; 62 63 enum sbi_ext_ipi_fid { 64 SBI_EXT_IPI_SEND_IPI = 0, 65 }; 66 67 enum sbi_ext_hsm_sid { 68 SBI_EXT_HSM_STARTED = 0, 69 SBI_EXT_HSM_STOPPED, 70 SBI_EXT_HSM_START_PENDING, 71 SBI_EXT_HSM_STOP_PENDING, 72 SBI_EXT_HSM_SUSPENDED, 73 SBI_EXT_HSM_SUSPEND_PENDING, 74 SBI_EXT_HSM_RESUME_PENDING, 75 }; 76 77 enum sbi_ext_hsm_hart_suspend_type { 78 SBI_EXT_HSM_HART_SUSPEND_RETENTIVE = 0, 79 SBI_EXT_HSM_HART_SUSPEND_NON_RETENTIVE = 0x80000000, 80 }; 81 82 enum sbi_ext_dbcn_fid { 83 SBI_EXT_DBCN_CONSOLE_WRITE = 0, 84 SBI_EXT_DBCN_CONSOLE_READ, 85 SBI_EXT_DBCN_CONSOLE_WRITE_BYTE, 86 }; 87 88 89 enum sbi_ext_fwft_fid { 90 SBI_EXT_FWFT_SET = 0, 91 SBI_EXT_FWFT_GET, 92 }; 93 94 #define SBI_FWFT_MISALIGNED_EXC_DELEG 0x0 95 #define SBI_FWFT_LANDING_PAD 0x1 96 #define SBI_FWFT_SHADOW_STACK 0x2 97 #define SBI_FWFT_DOUBLE_TRAP 0x3 98 #define SBI_FWFT_PTE_AD_HW_UPDATING 0x4 99 #define SBI_FWFT_POINTER_MASKING_PMLEN 0x5 100 #define SBI_FWFT_LOCAL_RESERVED_START 0x6 101 #define SBI_FWFT_LOCAL_RESERVED_END 0x3fffffff 102 #define SBI_FWFT_LOCAL_PLATFORM_START 0x40000000 103 #define SBI_FWFT_LOCAL_PLATFORM_END 0x7fffffff 104 105 #define SBI_FWFT_GLOBAL_RESERVED_START 0x80000000 106 #define SBI_FWFT_GLOBAL_RESERVED_END 0xbfffffff 107 #define SBI_FWFT_GLOBAL_PLATFORM_START 0xc0000000 108 #define SBI_FWFT_GLOBAL_PLATFORM_END 0xffffffff 109 110 #define SBI_FWFT_PLATFORM_FEATURE_BIT BIT(30) 111 #define SBI_FWFT_GLOBAL_FEATURE_BIT BIT(31) 112 113 #define SBI_FWFT_SET_FLAG_LOCK BIT(0) 114 115 struct sbiret { 116 long error; 117 long value; 118 }; 119 120 static inline unsigned long sbi_mk_version(unsigned long major, unsigned long minor) 121 { 122 return ((major & SBI_SPEC_VERSION_MAJOR_MASK) << SBI_SPEC_VERSION_MAJOR_SHIFT) 123 | (minor & SBI_SPEC_VERSION_MINOR_MASK); 124 } 125 126 struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0, 127 unsigned long arg1, unsigned long arg2, 128 unsigned long arg3, unsigned long arg4, 129 unsigned long arg5); 130 131 void sbi_shutdown(void); 132 struct sbiret sbi_hart_start(unsigned long hartid, unsigned long entry, unsigned long sp); 133 struct sbiret sbi_hart_stop(void); 134 struct sbiret sbi_hart_get_status(unsigned long hartid); 135 struct sbiret sbi_send_ipi(unsigned long hart_mask, unsigned long hart_mask_base); 136 struct sbiret sbi_send_ipi_cpu(int cpu); 137 struct sbiret sbi_send_ipi_cpumask(const cpumask_t *mask); 138 struct sbiret sbi_send_ipi_broadcast(void); 139 struct sbiret sbi_set_timer(unsigned long stime_value); 140 struct sbiret sbi_get_spec_version(void); 141 long sbi_probe(int ext); 142 143 #endif /* !__ASSEMBLER__ */ 144 #endif /* _ASMRISCV_SBI_H_ */ 145