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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194/* SPDX-License-Identifier: GPL-2.0-only *//* * Copyright (C) 2023 ARM Ltd. */
#ifndef __LINUX_ARM_SMCCC_RSI_H_#define __LINUX_ARM_SMCCC_RSI_H_
#include <linux/arm-smccc.h>
/* * This file describes the Realm Services Interface (RSI) Application Binary * Interface (ABI) for SMC calls made from within the Realm to the RMM and * serviced by the RMM. */
/* * The major version number of the RSI implementation. This is increased when * the binary format or semantics of the SMC calls change. */#define RSI_ABI_VERSION_MAJOR UL(1)
/* * The minor version number of the RSI implementation. This is increased when * a bug is fixed, or a feature is added without breaking binary compatibility. */#define RSI_ABI_VERSION_MINOR UL(0)
#define RSI_ABI_VERSION ((RSI_ABI_VERSION_MAJOR << 16) | \ RSI_ABI_VERSION_MINOR)
#define RSI_ABI_VERSION_GET_MAJOR(_version) ((_version) >> 16)#define RSI_ABI_VERSION_GET_MINOR(_version) ((_version) & 0xFFFF)
#define RSI_SUCCESS UL(0)#define RSI_ERROR_INPUT UL(1)#define RSI_ERROR_STATE UL(2)#define RSI_INCOMPLETE UL(3)#define RSI_ERROR_UNKNOWN UL(4)
#define SMC_RSI_FID(n) ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ ARM_SMCCC_SMC_64, \ ARM_SMCCC_OWNER_STANDARD, \ n)
/* * Returns RSI version. * * arg1 == Requested interface revision * ret0 == Status / error * ret1 == Lower implemented interface revision * ret2 == Higher implemented interface revision */#define SMC_RSI_ABI_VERSION SMC_RSI_FID(0x190)
/* * Read feature register. * * arg1 == Feature register index * ret0 == Status / error * ret1 == Feature register value */#define SMC_RSI_FEATURES SMC_RSI_FID(0x191)
/* * Read measurement for the current Realm. * * arg1 == Index, which measurements slot to read * ret0 == Status / error * ret1 == Measurement value, bytes: 0 - 7 * ret2 == Measurement value, bytes: 8 - 15 * ret3 == Measurement value, bytes: 16 - 23 * ret4 == Measurement value, bytes: 24 - 31 * ret5 == Measurement value, bytes: 32 - 39 * ret6 == Measurement value, bytes: 40 - 47 * ret7 == Measurement value, bytes: 48 - 55 * ret8 == Measurement value, bytes: 56 - 63 */#define SMC_RSI_MEASUREMENT_READ SMC_RSI_FID(0x192)
/* * Extend Realm Extensible Measurement (REM) value. * * arg1 == Index, which measurements slot to extend * arg2 == Size of realm measurement in bytes, max 64 bytes * arg3 == Measurement value, bytes: 0 - 7 * arg4 == Measurement value, bytes: 8 - 15 * arg5 == Measurement value, bytes: 16 - 23 * arg6 == Measurement value, bytes: 24 - 31 * arg7 == Measurement value, bytes: 32 - 39 * arg8 == Measurement value, bytes: 40 - 47 * arg9 == Measurement value, bytes: 48 - 55 * arg10 == Measurement value, bytes: 56 - 63 * ret0 == Status / error */#define SMC_RSI_MEASUREMENT_EXTEND SMC_RSI_FID(0x193)
/* * Initialize the operation to retrieve an attestation token. * * arg1 == Challenge value, bytes: 0 - 7 * arg2 == Challenge value, bytes: 8 - 15 * arg3 == Challenge value, bytes: 16 - 23 * arg4 == Challenge value, bytes: 24 - 31 * arg5 == Challenge value, bytes: 32 - 39 * arg6 == Challenge value, bytes: 40 - 47 * arg7 == Challenge value, bytes: 48 - 55 * arg8 == Challenge value, bytes: 56 - 63 * ret0 == Status / error * ret1 == Upper bound of token size in bytes */#define SMC_RSI_ATTESTATION_TOKEN_INIT SMC_RSI_FID(0x194)
/* * Continue the operation to retrieve an attestation token. * * arg1 == The IPA of token buffer * arg2 == Offset within the granule of the token buffer * arg3 == Size of the granule buffer * ret0 == Status / error * ret1 == Length of token bytes copied to the granule buffer */#define SMC_RSI_ATTESTATION_TOKEN_CONTINUE SMC_RSI_FID(0x195)
#ifndef __ASSEMBLER__
struct realm_config { union { struct { unsigned long ipa_bits; /* Width of IPA in bits */ u8 hash_algo; /* Hash algorithm */ }; u8 pad[0x200]; }; union { u8 rpv[64]; /* Realm Personalization Value */ u8 pad2[0xe00]; }; /* * The RMM requires the configuration structure to be aligned to a 4k * boundary, ensure this happens by aligning this structure. */} __aligned(0x1000);
#endif /* __ASSEMBLER__ */
/* * Read configuration for the current Realm. * * arg1 == struct realm_config addr * ret0 == Status / error */#define SMC_RSI_REALM_CONFIG SMC_RSI_FID(0x196)
/* * Request RIPAS of a target IPA range to be changed to a specified value. * * arg1 == Base IPA address of target region * arg2 == Top of the region * arg3 == RIPAS value * arg4 == flags * ret0 == Status / error * ret1 == Top of modified IPA range * ret2 == Whether the Host accepted or rejected the request */#define SMC_RSI_IPA_STATE_SET SMC_RSI_FID(0x197)
#define RSI_NO_CHANGE_DESTROYED UL(0)#define RSI_CHANGE_DESTROYED UL(1)
#define RSI_ACCEPT UL(0)#define RSI_REJECT UL(1)
/* * Get RIPAS of a target IPA range. * * arg1 == Base IPA of target region * arg2 == End of target IPA region * ret0 == Status / error * ret1 == Top of IPA region which has the reported RIPAS value * ret2 == RIPAS value */#define SMC_RSI_IPA_STATE_GET SMC_RSI_FID(0x198)
/* * Make a Host call. * * arg1 == IPA of host call structure * ret0 == Status / error */#define SMC_RSI_HOST_CALL SMC_RSI_FID(0x199)
#endif /* __LINUX_ARM_SMCCC_RSI_H_ */