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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
33 lines
706 B
C
33 lines
706 B
C
/*
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* Copyright (c) 2021, Arm Limited and Contributors. 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 RMMD_INITIAL_CONTEXT_H
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#define RMMD_INITIAL_CONTEXT_H
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#include <arch.h>
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/*
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* SPSR_EL2
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* M=0x9 (0b1001 EL2h)
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* M[4]=0
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* DAIF=0xF Exceptions masked on entry.
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* BTYPE=0 BTI not yet supported.
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* SSBS=0 Not yet supported.
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* IL=0 Not an illegal exception return.
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* SS=0 Not single stepping.
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* PAN=1 RMM shouldn't access realm memory.
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* UAO=0
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* DIT=0
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* TCO=0
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* NZCV=0
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*/
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#define REALM_SPSR_EL2 ( \
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SPSR_M_EL2H | \
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(0xF << SPSR_DAIF_SHIFT) | \
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SPSR_PAN_BIT \
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)
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#endif /* RMMD_INITIAL_CONTEXT_H */
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