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

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