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306551362c
This patch disables trapping to EL3 when the FEAT_D128 specific registers are accessed by setting the SCR_EL3.D128En bit. If FEAT_D128 is implemented, then FEAT_SYSREG128 is implemented. With FEAT_SYSREG128 certain system registers are treated as 128-bit, so we should be context saving and restoring 128-bits instead of 64-bit when FEAT_D128 is enabled. FEAT_SYSREG128 adds support for MRRS and MSRR instruction which helps us to read write to 128-bit system register. Refer to Arm Architecture Manual for further details. Change the FVP platform to default to handling this as a dynamic option so the right decision can be made by the code at runtime. Change-Id: I1a53db5eac29e56c8fbdcd4961ede3abfcb2411a Signed-off-by: Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com> Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
16 lines
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391 B
Makefile
16 lines
No EOL
391 B
Makefile
#
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# Copyright (c) 2024, 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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ifeq (${ERROR_DEPRECATED},0)
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SPD_INCLUDES := -Iinclude/bl32/payloads
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endif
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ifeq (${ENABLE_FEAT_D128}, 0)
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SPD_SOURCES := services/spd/tlkd/tlkd_common.c \
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services/spd/tlkd/tlkd_helpers.S \
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services/spd/tlkd/tlkd_main.c \
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services/spd/tlkd/tlkd_pm.c
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endif |