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refactor(build): allow mandatory feats disabling

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Currently any arch FEAT_* can be enabled from:
 - command line build options
 - platform makefile
 - from arch_features.mk

These are in order. However, mandatory features are enforced from
arch_features.mk and platform makefile can't override them.

Allow command line options or platforms makefile to disable any
mandatory features.

Change-Id: I6fdca1a3d0b405a88cd7a20309e0c1eecd57a650
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
This commit is contained in:
Govindraj Raja 2024-01-11 13:56:40 -06:00
parent 6c74b55637
commit 6c1ae07504
1 changed files with 13 additions and 13 deletions
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26
make_helpers/arch_features.mk
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@ -20,48 +20,48 @@
# Enable the features which are mandatory from ARCH version 8.1 and upwards.
ifeq "8.1" "$(word 1, $(sort 8.1 $(ARM_ARCH_MAJOR).$(ARM_ARCH_MINOR)))"
ENABLE_FEAT_PAN := 1
ENABLE_FEAT_VHE := 1
ENABLE_FEAT_PAN ?= 1
ENABLE_FEAT_VHE ?= 1
endif
# Enable the features which are mandatory from ARCH version 8.2 and upwards.
ifeq "8.2" "$(word 1, $(sort 8.2 $(ARM_ARCH_MAJOR).$(ARM_ARCH_MINOR)))"
ENABLE_FEAT_RAS := 1
ENABLE_FEAT_RAS ?= 1
endif
# Enable the features which are mandatory from ARCH version 8.4 and upwards.
ifeq "8.4" "$(word 1, $(sort 8.4 $(ARM_ARCH_MAJOR).$(ARM_ARCH_MINOR)))"
ENABLE_FEAT_SEL2 := 1
ENABLE_TRF_FOR_NS := 1
ENABLE_FEAT_DIT := 1
ENABLE_FEAT_SEL2 ?= 1
ENABLE_TRF_FOR_NS ?= 1
ENABLE_FEAT_DIT ?= 1
endif
# Enable the features which are mandatory from ARCH version 8.5 and upwards.
ifeq "8.5" "$(word 1, $(sort 8.5 $(ARM_ARCH_MAJOR).$(ARM_ARCH_MINOR)))"
ENABLE_FEAT_RNG := 1
ENABLE_FEAT_SB := 1
ENABLE_FEAT_RNG ?= 1
ENABLE_FEAT_SB ?= 1
# Enable Memory tagging, Branch Target Identification for aarch64 only.
ifeq ($(ARCH), aarch64)
mem_tag_arch_support := yes
mem_tag_arch_support ?= yes
endif #(ARCH=aarch64)
endif
# Enable the features which are mandatory from ARCH version 8.6 and upwards.
ifeq "8.6" "$(word 1, $(sort 8.6 $(ARM_ARCH_MAJOR).$(ARM_ARCH_MINOR)))"
ENABLE_FEAT_ECV := 1
ENABLE_FEAT_FGT := 1
ENABLE_FEAT_ECV ?= 1
ENABLE_FEAT_FGT ?= 1
endif
# Enable the features which are mandatory from ARCH version 8.7 and upwards.
ifeq "8.7" "$(word 1, $(sort 8.7 $(ARM_ARCH_MAJOR).$(ARM_ARCH_MINOR)))"
ENABLE_FEAT_HCX := 1
ENABLE_FEAT_HCX ?= 1
endif
# Enable the features which are mandatory from ARCH version 8.9 and upwards.
ifeq "8.9" "$(word 1, $(sort 8.9 $(ARM_ARCH_MAJOR).$(ARM_ARCH_MINOR)))"
ENABLE_FEAT_TCR2 := 1
ENABLE_FEAT_TCR2 ?= 1
endif
#