diff options
Diffstat (limited to 'include/linux/trusty/smcall.h')
| -rw-r--r-- | include/linux/trusty/smcall.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/include/linux/trusty/smcall.h b/include/linux/trusty/smcall.h new file mode 100644 index 0000000..2f69eb3 --- /dev/null +++ b/include/linux/trusty/smcall.h @@ -0,0 +1,109 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright (c) 2013-2014 Google Inc. All rights reserved + * + * Trusty and TF-A also have a copy of this header. + * Please keep the copies in sync. + */ +#ifndef __LINUX_TRUSTY_SMCALL_H +#define __LINUX_TRUSTY_SMCALL_H + +#define SMC_NUM_ENTITIES 64 +#define SMC_NUM_ARGS 4 +#define SMC_NUM_PARAMS (SMC_NUM_ARGS - 1) + +#define SMC_IS_FASTCALL(smc_nr) ((smc_nr) & 0x80000000) +#define SMC_IS_SMC64(smc_nr) ((smc_nr) & 0x40000000) +#define SMC_ENTITY(smc_nr) (((smc_nr) & 0x3F000000) >> 24) +#define SMC_FUNCTION(smc_nr) ((smc_nr) & 0x0000FFFF) + +#define SMC_NR(entity, fn, fastcall, smc64) ((((fastcall) & 0x1U) << 31) | \ + (((smc64) & 0x1U) << 30) | \ + (((entity) & 0x3FU) << 24) | \ + ((fn) & 0xFFFFU) \ + ) + +#define SMC_FASTCALL_NR(entity, fn) SMC_NR((entity), (fn), 1, 0) +#define SMC_STDCALL_NR(entity, fn) SMC_NR((entity), (fn), 0, 0) +#define SMC_FASTCALL64_NR(entity, fn) SMC_NR((entity), (fn), 1, 1) +#define SMC_STDCALL64_NR(entity, fn) SMC_NR((entity), (fn), 0, 1) + +#define SMC_ENTITY_ARCH 0 /* ARM Architecture calls */ +#define SMC_ENTITY_CPU 1 /* CPU Service calls */ +#define SMC_ENTITY_SIP 2 /* SIP Service calls */ +#define SMC_ENTITY_OEM 3 /* OEM Service calls */ +#define SMC_ENTITY_STD 4 /* Standard Service calls */ +#define SMC_ENTITY_RESERVED 5 /* Reserved for future use */ +#define SMC_ENTITY_TRUSTED_APP 48 /* Trusted Application calls */ +#define SMC_ENTITY_TRUSTED_OS 50 /* Trusted OS calls */ +#define SMC_ENTITY_SECURE_MONITOR 60 /* Trusted OS calls internal to secure monitor */ + +/* FC = Fast call, SC = Standard call */ +#define SMC_SC_RESTART_LAST SMC_STDCALL_NR(SMC_ENTITY_SECURE_MONITOR, 0) +#define SMC_SC_LOCKED_NOP SMC_STDCALL_NR(SMC_ENTITY_SECURE_MONITOR, 1) + +/** + * SMC_SC_RESTART_FIQ - Re-enter trusty after it was interrupted by an fiq + * + * No arguments, no return value. + * + * Re-enter trusty after returning to ns to process an fiq. Must be called iff + * trusty returns SM_ERR_FIQ_INTERRUPTED. + * + * Enable by selecting api version TRUSTY_API_VERSION_RESTART_FIQ (1) or later. + */ +#define SMC_SC_RESTART_FIQ SMC_STDCALL_NR(SMC_ENTITY_SECURE_MONITOR, 2) + +/** + * SMC_SC_NOP - Enter trusty to run pending work. + * + * No arguments. + * + * Returns SM_ERR_NOP_INTERRUPTED or SM_ERR_NOP_DONE. + * If SM_ERR_NOP_INTERRUPTED is returned, the call must be repeated. + * + * Enable by selecting api version TRUSTY_API_VERSION_SMP (2) or later. + */ +#define SMC_SC_NOP SMC_STDCALL_NR(SMC_ENTITY_SECURE_MONITOR, 3) + +/* + * Return from secure os to non-secure os with return value in r1 + */ +#define SMC_SC_NS_RETURN SMC_STDCALL_NR(SMC_ENTITY_SECURE_MONITOR, 0) + +#define SMC_FC_RESERVED SMC_FASTCALL_NR(SMC_ENTITY_SECURE_MONITOR, 0) +#define SMC_FC_FIQ_EXIT SMC_FASTCALL_NR(SMC_ENTITY_SECURE_MONITOR, 1) +#define SMC_FC_REQUEST_FIQ SMC_FASTCALL_NR(SMC_ENTITY_SECURE_MONITOR, 2) +#define SMC_FC_GET_NEXT_IRQ SMC_FASTCALL_NR(SMC_ENTITY_SECURE_MONITOR, 3) + +#define SMC_FC_CPU_SUSPEND SMC_FASTCALL_NR(SMC_ENTITY_SECURE_MONITOR, 7) +#define SMC_FC_CPU_RESUME SMC_FASTCALL_NR(SMC_ENTITY_SECURE_MONITOR, 8) + +#define SMC_FC_AARCH_SWITCH SMC_FASTCALL_NR(SMC_ENTITY_SECURE_MONITOR, 9) +#define SMC_FC_GET_VERSION_STR SMC_FASTCALL_NR(SMC_ENTITY_SECURE_MONITOR, 10) + +/** + * SMC_FC_API_VERSION - Find and select supported API version. + * + * @r1: Version supported by client. + * + * Returns version supported by trusty. + * + * If multiple versions are supported, the client should start by calling + * SMC_FC_API_VERSION with the largest version it supports. Trusty will then + * return a version it supports. If the client does not support the version + * returned by trusty and the version returned is less than the version + * requested, repeat the call with the largest supported version less than the + * last returned version. + * + * This call must be made before any calls that are affected by the api version. + */ +#define TRUSTY_API_VERSION_RESTART_FIQ (1) +#define TRUSTY_API_VERSION_SMP (2) +#define TRUSTY_API_VERSION_SMP_NOP (3) +#define TRUSTY_API_VERSION_PHYS_MEM_OBJ (4) +#define TRUSTY_API_VERSION_MEM_OBJ (5) +#define TRUSTY_API_VERSION_CURRENT (5) +#define SMC_FC_API_VERSION SMC_FASTCALL_NR(SMC_ENTITY_SECURE_MONITOR, 11) + +#endif /* __LINUX_TRUSTY_SMCALL_H */ |