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77c2775323
This patch introduces the RMM dispatcher into BL31. This will be the mechanism that will enable communication to take place between the Realm and non-secure world. Currently gives the capability for granules to be transitioned from non-secure type to realm and vice versa. Signed-off-by: Zelalem Aweke <zelalem.aweke@arm.com> Signed-off-by: Subhasish Ghosh <subhasish.ghosh@arm.com> Change-Id: I1fdc99a4bdd42bc14911aa0c6954b131de309511
40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
/*
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* Copyright (c) 2021, Arm Limited. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef GTSI_SVC_H
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#define GTSI_SVC_H
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/* GTSI error codes. */
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#define GTSI_SUCCESS 0
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#define GTSI_ERROR_NOT_SUPPORTED -1
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#define GTSI_ERROR_INVALID_ADDRESS -2
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#define GTSI_ERROR_INVALID_PAS -3
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/* The macros below are used to identify GTSI calls from the SMC function ID */
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#define GTSI_FNUM_MIN_VALUE U(0x100)
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#define GTSI_FNUM_MAX_VALUE U(0x101)
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#define is_gtsi_fid(fid) __extension__ ({ \
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__typeof__(fid) _fid = (fid); \
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((GET_SMC_NUM(_fid) >= GTSI_FNUM_MIN_VALUE) && \
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(GET_SMC_NUM(_fid) <= GTSI_FNUM_MAX_VALUE)); })
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/* Get GTSI fastcall std FID from function number */
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#define GTSI_FID(smc_cc, func_num) \
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((SMC_TYPE_FAST << FUNCID_TYPE_SHIFT) | \
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((smc_cc) << FUNCID_CC_SHIFT) | \
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(OEN_STD_START << FUNCID_OEN_SHIFT) | \
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((func_num) << FUNCID_NUM_SHIFT))
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#define GRAN_TRANS_TO_REALM_FNUM U(0x100)
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#define GRAN_TRANS_TO_NS_FNUM U(0x101)
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#define SMC_ASC_MARK_REALM GTSI_FID(SMC_64, GRAN_TRANS_TO_REALM_FNUM)
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#define SMC_ASC_MARK_NONSECURE GTSI_FID(SMC_64, GRAN_TRANS_TO_NS_FNUM)
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#define GRAN_TRANS_RET_BAD_ADDR -2
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#define GRAN_TRANS_RET_BAD_PAS -3
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#endif /* GTSI_SVC_H */
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