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feat(spmc): prevent read only xlat tables with the EL3 SPMC

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If using the EL3 SPMC ensure that we don't mark the translation
tables as read only. The SPMC requires the ability to map and
unmap a partitions RX/TX buffers at runtime.

Signed-off-by: Sayanta Pattanayak <sayanta.pattanayak@arm.com>
Signed-off-by: Marc Bonnici <marc.bonnici@arm.com>
Change-Id: Ibb78a6a2e3847ce4ec74ce81a9bb61ce34fec24c
This commit is contained in:
Sayanta Pattanayak 2021-03-06 11:43:06 +05:30 • committed by Marc Bonnici
parent 1d63ae4d0d
commit 70d986ddbb
1 changed files with 5 additions and 1 deletions
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6
lib/xlat_tables_v2/ro_xlat_tables.mk
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@ -1,5 +1,5 @@
#
# Copyright (c) 2020, ARM Limited. All rights reserved.
# Copyright (c) 2020-2022, ARM Limited. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
@ -34,4 +34,8 @@ else # if AArch64
attributes, which is not possible once the translation tables \
have been made read-only.")
endif
ifeq (${SPMC_AT_EL3},1)
$(error "EL3 SPMC requires functionality from the dynamic translation \
library and is incompatible with ALLOW_RO_XLAT_TABLES.")
endif
endif