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14c27f8293
The use of AMU counters at the highest implemented exception level can expose information about them to lower exception levels, such as specific behavior happening in the CPU (e.g.: MPMM gear shifting in TC2). In order to prevent this, read accesses to AMU counters are restricted by default, so they are RAZ (read-as-zero) from lower exception levels from now on. Change-Id: I660b0928bea3fe09436ad53b0bb43c3067523178 Signed-off-by: Juan Pablo Conde <juanpablo.conde@arm.com>
404 lines
12 KiB
Makefile
404 lines
12 KiB
Makefile
#
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# Copyright (c) 2022-2024, Arm Limited. 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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# This file lists all of the architectural features, and initializes
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# and enables them based on the configured architecture version.
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# This file follows the following format:
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# - Enable mandatory feature if not updated, as applicable to an Arch Version.
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# - By default disable any mandatory features if they have not been defined yet.
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# - Disable or enable any optional feature this would be enabled/disabled if needed by platform.
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#
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################################################################################
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# Enable Mandatory features if not updated yet, based on Arch versions.
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################################################################################
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#
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# Enable the features which are mandatory from ARCH version 8.1 and upwards.
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ifeq "8.1" "$(word 1, $(sort 8.1 $(ARM_ARCH_MAJOR).$(ARM_ARCH_MINOR)))"
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armv8-1-a-feats := ENABLE_FEAT_PAN ENABLE_FEAT_VHE
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FEAT_LIST := ${armv8-1-a-feats}
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endif
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# Enable the features which are mandatory from ARCH version 8.2 and upwards.
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ifeq "8.2" "$(word 1, $(sort 8.2 $(ARM_ARCH_MAJOR).$(ARM_ARCH_MINOR)))"
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armv8-2-a-feats := ENABLE_FEAT_RAS
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# 8.1 Compliant
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armv8-2-a-feats += ${armv8-1-a-feats}
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FEAT_LIST := ${armv8-2-a-feats}
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endif
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# Enable the features which are mandatory from ARCH version 8.3 and upwards.
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ifeq "8.3" "$(word 1, $(sort 8.3 $(ARM_ARCH_MAJOR).$(ARM_ARCH_MINOR)))"
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# 8.2 Compliant
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armv8-3-a-feats += ${armv8-2-a-feats}
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FEAT_LIST := ${armv8-3-a-feats}
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endif
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# Enable the features which are mandatory from ARCH version 8.4 and upwards.
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ifeq "8.4" "$(word 1, $(sort 8.4 $(ARM_ARCH_MAJOR).$(ARM_ARCH_MINOR)))"
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armv8-4-a-feats := ENABLE_FEAT_SEL2 ENABLE_TRF_FOR_NS ENABLE_FEAT_DIT
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# 8.3 Compliant
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armv8-4-a-feats += ${armv8-3-a-feats}
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FEAT_LIST := ${armv8-4-a-feats}
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endif
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# Enable the features which are mandatory from ARCH version 8.5 and upwards.
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ifeq "8.5" "$(word 1, $(sort 8.5 $(ARM_ARCH_MAJOR).$(ARM_ARCH_MINOR)))"
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armv8-5-a-feats := ENABLE_FEAT_RNG ENABLE_FEAT_SB
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# 8.4 Compliant
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armv8-5-a-feats += ${armv8-4-a-feats}
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FEAT_LIST := ${armv8-5-a-feats}
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# Enable Memory tagging, Branch Target Identification for aarch64 only.
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ifeq ($(ARCH), aarch64)
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mem_tag_arch_support ?= yes
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endif #(ARCH=aarch64)
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endif
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# Enable the features which are mandatory from ARCH version 8.6 and upwards.
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ifeq "8.6" "$(word 1, $(sort 8.6 $(ARM_ARCH_MAJOR).$(ARM_ARCH_MINOR)))"
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armv8-6-a-feats := ENABLE_FEAT_ECV ENABLE_FEAT_FGT
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# 8.5 Compliant
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armv8-6-a-feats += ${armv8-5-a-feats}
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FEAT_LIST := ${armv8-6-a-feats}
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endif
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# Enable the features which are mandatory from ARCH version 8.7 and upwards.
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ifeq "8.7" "$(word 1, $(sort 8.7 $(ARM_ARCH_MAJOR).$(ARM_ARCH_MINOR)))"
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armv8-7-a-feats := ENABLE_FEAT_HCX
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# 8.6 Compliant
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armv8-7-a-feats += ${armv8-6-a-feats}
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FEAT_LIST := ${armv8-7-a-feats}
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endif
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# Enable the features which are mandatory from ARCH version 8.8 and upwards.
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ifeq "8.8" "$(word 1, $(sort 8.8 $(ARM_ARCH_MAJOR).$(ARM_ARCH_MINOR)))"
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# 8.7 Compliant
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armv8-7-a-feats += ${armv8-7-a-feats}
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FEAT_LIST := ${armv8-8-a-feats}
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endif
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# Enable the features which are mandatory from ARCH version 8.9 and upwards.
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ifeq "8.9" "$(word 1, $(sort 8.9 $(ARM_ARCH_MAJOR).$(ARM_ARCH_MINOR)))"
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armv8-9-a-feats := ENABLE_FEAT_TCR2
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# 8.8 Compliant
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armv8-9-a-feats += ${armv8-8-a-feats}
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FEAT_LIST := ${armv8-9-a-feats}
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endif
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# Enable the features which are mandatory from ARCH version 9.0 and upwards.
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ifeq "9.0" "$(word 1, $(sort 9.0 $(ARM_ARCH_MAJOR).$(ARM_ARCH_MINOR)))"
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# 8.5 Compliant
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armv9-0-a-feats += ${armv8-5-a-feats}
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FEAT_LIST := ${armv9-0-a-feats}
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endif
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# Enable the features which are mandatory from ARCH version 9.1 and upwards.
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ifeq "9.1" "$(word 1, $(sort 9.1 $(ARM_ARCH_MAJOR).$(ARM_ARCH_MINOR)))"
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# 8.6 and 9.0 Compliant
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armv9-1-a-feats += ${armv8-6-a-feats} ${armv9-0-a-feats}
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FEAT_LIST := ${armv9-1-a-feats}
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endif
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# Enable the features which are mandatory from ARCH version 9.2 and upwards.
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ifeq "9.2" "$(word 1, $(sort 9.2 $(ARM_ARCH_MAJOR).$(ARM_ARCH_MINOR)))"
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# 8.7 and 9.1 Compliant
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armv9-2-a-feats += ${armv8-7-a-feats} ${armv9-1-a-feats}
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FEAT_LIST := ${armv9-2-a-feats}
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endif
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# Enable the features which are mandatory from ARCH version 9.3 and upwards.
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ifeq "9.3" "$(word 1, $(sort 9.3 $(ARM_ARCH_MAJOR).$(ARM_ARCH_MINOR)))"
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# 8.8 and 9.2 Compliant
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armv9-3-a-feats += ${armv8-8-a-feats} ${armv9-2-a-feats}
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FEAT_LIST := ${armv9-3-a-feats}
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endif
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# Set all FEAT_* in FEAT_LIST to '1' if they are not yet defined or set
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# from build commandline options or platform makefile.
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$(eval $(call default_ones, ${sort ${FEAT_LIST}}))
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#
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################################################################################
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# Set mandatory features by default to zero, if they are not already updated.
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################################################################################
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#
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#----
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# 8.1
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#----
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# Flag to enable access to Privileged Access Never bit of PSTATE.
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ENABLE_FEAT_PAN ?= 0
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# Flag to enable Virtualization Host Extensions.
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ENABLE_FEAT_VHE ?= 0
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#----
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# 8.2
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#----
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# Enable RAS Support.
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ENABLE_FEAT_RAS ?= 0
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#----
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# 8.3
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#----
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# Flag to enable Pointer Authentication. Internal flag not meant for
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# direct setting. Use BRANCH_PROTECTION to enable PAUTH.
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ENABLE_PAUTH ?= 0
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# Include pointer authentication (ARMv8.3-PAuth) registers in cpu context. This
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# must be set to 1 if the platform wants to use this feature in the Secure
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# world. It is not necessary for use in the Non-secure world.
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CTX_INCLUDE_PAUTH_REGS ?= 0
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#----
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# 8.4
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#----
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# Flag to enable Secure EL-2 feature.
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ENABLE_FEAT_SEL2 ?= 0
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# By default, disable trace filter control register access to lower non-secure
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# exception levels, i.e. NS-EL2, or NS-EL1 if NS-EL2 is implemented, but
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# trace filter control register access is unused if FEAT_TRF is implemented.
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ENABLE_TRF_FOR_NS ?= 0
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# Flag to enable Data Independent Timing instructions.
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ENABLE_FEAT_DIT ?= 0
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#----
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# 8.5
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#----
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# Flag to enable Branch Target Identification.
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# Internal flag not meant for direct setting.
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# Use BRANCH_PROTECTION to enable BTI.
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ENABLE_BTI ?= 0
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# Flag to enable access to the Random Number Generator registers.
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ENABLE_FEAT_RNG ?= 0
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# Flag to enable Speculation Barrier Instruction.
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ENABLE_FEAT_SB ?= 0
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#----
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# 8.6
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#----
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# Flag to enable access to the CNTPOFF_EL2 register.
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ENABLE_FEAT_ECV ?= 0
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# Flag to enable access to the HDFGRTR_EL2 register.
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ENABLE_FEAT_FGT ?= 0
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#----
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# 8.7
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#----
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# Flag to enable access to the HCRX_EL2 register by setting SCR_EL3.HXEn.
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ENABLE_FEAT_HCX ?= 0
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#----
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# 8.9
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#----
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# Flag to enable access to TCR2 (FEAT_TCR2).
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ENABLE_FEAT_TCR2 ?= 0
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#
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################################################################################
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# Optional Features defaulted to 0 or 2, if they are not enabled from
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# build option. Can also be disabled or enabled by platform if needed.
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################################################################################
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#
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#----
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# 8.0
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#----
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# Flag to enable CSV2_2 extension.
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ENABLE_FEAT_CSV2_2 ?= 0
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# Flag to enable CSV2_3 extension. FEAT_CSV2_3 enables access to the
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# SCXTNUM_ELx register.
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ENABLE_FEAT_CSV2_3 ?= 0
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# By default, disable access of trace system registers from NS lower
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# ELs i.e. NS-EL2, or NS-EL1 if NS-EL2 implemented but unused if
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# system register trace is implemented. This feature is available if
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# trace unit such as ETMv4.x, This feature is OPTIONAL and is only
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# permitted in Armv8 implementations.
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ENABLE_SYS_REG_TRACE_FOR_NS ?= 0
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#----
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# 8.2
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#----
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# Build option to enable/disable the Statistical Profiling Extension,
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# keep it enabled by default for AArch64.
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ifeq (${ARCH},aarch64)
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ENABLE_SPE_FOR_NS ?= 2
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else ifeq (${ARCH},aarch32)
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ifneq ($(or $(ENABLE_SPE_FOR_NS),0),0)
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$(error ENABLE_SPE_FOR_NS is not supported for AArch32)
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else
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ENABLE_SPE_FOR_NS := 0
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endif
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endif
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# Enable SVE for non-secure world by default.
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ifeq (${ARCH},aarch64)
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ENABLE_SVE_FOR_NS ?= 2
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# SVE is only supported on AArch64 so disable it on AArch32.
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else ifeq (${ARCH},aarch32)
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ifneq ($(or $(ENABLE_SVE_FOR_NS),0),0)
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$(error ENABLE_SVE_FOR_NS is not supported for AArch32)
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else
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ENABLE_SVE_FOR_NS := 0
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endif
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endif
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#----
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# 8.4
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#----
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# Feature flags for supporting Activity monitor extensions.
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ENABLE_FEAT_AMU ?= 0
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ENABLE_AMU_AUXILIARY_COUNTERS ?= 0
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ENABLE_AMU_FCONF ?= 0
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AMU_RESTRICT_COUNTERS ?= 1
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# Build option to enable MPAM for lower ELs.
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# Enabling it by default
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ifeq (${ARCH},aarch64)
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ENABLE_FEAT_MPAM ?= 2
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else ifeq (${ARCH},aarch32)
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ifneq ($(or $(ENABLE_FEAT_MPAM),0),0)
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$(error ENABLE_FEAT_MPAM is not supported for AArch32)
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else
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ENABLE_FEAT_MPAM := 0
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endif
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endif
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# Include nested virtualization control (Armv8.4-NV) registers in cpu context.
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# This must be set to 1 if architecture implements Nested Virtualization
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# Extension and platform wants to use this feature in the Secure world.
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CTX_INCLUDE_NEVE_REGS ?= 0
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#----
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# 8.5
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#----
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# Flag to enable support for EL3 trapping of reads of the RNDR and RNDRRS
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# registers, by setting SCR_EL3.TRNDR.
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ENABLE_FEAT_RNG_TRAP ?= 0
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ifeq ($(CTX_INCLUDE_MTE_REGS),1)
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$(warning CTX_INCLUDE_MTE_REGS option is deprecated, Check ENABLE_FEAT_MTE2 usage)
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endif
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ifeq ($(ENABLE_FEAT_MTE),1)
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$(warning ENABLE_FEAT_MTE option is deprecated, Check ENABLE_FEAT_MTE2 usage)
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endif
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# Enable FEAT_MTE2. This must be set to 1 if the platform wants
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# to use this feature and is enabled at ELX.
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ENABLE_FEAT_MTE2 ?= 0
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#----
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# 8.6
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#----
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# Flag to enable AMUv1p1 extension.
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ENABLE_FEAT_AMUv1p1 ?= 0
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# Flag to enable delayed trapping of WFE instruction (FEAT_TWED).
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ENABLE_FEAT_TWED ?= 0
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# In v8.6+ platforms with delayed trapping of WFE being supported
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# via FEAT_TWED, this flag takes the delay value to be set in the
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# SCR_EL3.TWEDEL(4bit) field, when FEAT_TWED is implemented.
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# By default it takes 0, and need to be updated by the platforms.
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TWED_DELAY ?= 0
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# Disable MTPMU if FEAT_MTPMU is supported.
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DISABLE_MTPMU ?= 0
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#----
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# 8.9
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#----
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# Flag to enable access to Stage 2 Permission Indirection (FEAT_S2PIE).
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ENABLE_FEAT_S2PIE ?= 0
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# Flag to enable access to Stage 1 Permission Indirection (FEAT_S1PIE).
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ENABLE_FEAT_S1PIE ?= 0
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# Flag to enable access to Stage 2 Permission Overlay (FEAT_S2POE).
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ENABLE_FEAT_S2POE ?= 0
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# Flag to enable access to Stage 1 Permission Overlay (FEAT_S1POE).
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ENABLE_FEAT_S1POE ?= 0
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#----
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# 9.0
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#----
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# Scalable Matrix Extension for non-secure world.
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ENABLE_SME_FOR_NS ?= 0
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# Scalable Vector Extension for secure world.
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ENABLE_SVE_FOR_SWD ?= 0
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# By default, disable access of trace buffer control registers from NS
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# lower ELs i.e. NS-EL2, or NS-EL1 if NS-EL2 implemented but unused
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# if FEAT_TRBE is implemented.
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# Note FEAT_TRBE is only supported on AArch64 - therefore do not enable in
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# AArch32.
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ifeq (${ARCH},aarch64)
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ENABLE_TRBE_FOR_NS ?= 0
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else ifeq (${ARCH},aarch32)
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ifneq ($(or $(ENABLE_TRBE_FOR_NS),0),0)
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$(error ENABLE_TRBE_FOR_NS is not supported for AArch32)
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else
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ENABLE_TRBE_FOR_NS := 0
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endif
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endif
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#----
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# 9.2
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#----
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# Flag to enable Realm Management Extension (FEAT_RME).
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ENABLE_RME ?= 0
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# Scalable Matrix Extension version 2 for non-secure world.
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ENABLE_SME2_FOR_NS ?= 0
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# Scalable Matrix Extension for secure world.
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ENABLE_SME_FOR_SWD ?= 0
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# By default, disable access to branch record buffer control registers from NS
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# lower ELs i.e. NS-EL2, or NS-EL1 if NS-EL2 implemented but unused
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# if FEAT_BRBE is implemented.
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ENABLE_BRBE_FOR_NS ?= 0
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#----
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#9.4
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#----
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# Flag to enable access to Guarded Control Stack (FEAT_GCS).
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ENABLE_FEAT_GCS ?= 0
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