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A Secure Partition is a software execution environment instantiated in S-EL0 that can be used to implement simple management and security services. Since S-EL0 is an unprivileged exception level, a Secure Partition relies on privileged firmware e.g. ARM Trusted Firmware to be granted access to system and processor resources. Essentially, it is a software sandbox that runs under the control of privileged software in the Secure World and accesses the following system resources: - Memory and device regions in the system address map. - PE system registers. - A range of asynchronous exceptions e.g. interrupts. - A range of synchronous exceptions e.g. SMC function identifiers. A Secure Partition enables privileged firmware to implement only the absolutely essential secure services in EL3 and instantiate the rest in a partition. Since the partition executes in S-EL0, its implementation cannot be overly complex. The component in ARM Trusted Firmware responsible for managing a Secure Partition is called the Secure Partition Manager (SPM). The SPM is responsible for the following: - Validating and allocating resources requested by a Secure Partition. - Implementing a well defined interface that is used for initialising a Secure Partition. - Implementing a well defined interface that is used by the normal world and other secure services for accessing the services exported by a Secure Partition. - Implementing a well defined interface that is used by a Secure Partition to fulfil service requests. - Instantiating the software execution environment required by a Secure Partition to fulfil a service request. Change-Id: I6f7862d6bba8732db5b73f54e789d717a35e802f Co-authored-by: Douglas Raillard <douglas.raillard@arm.com> Co-authored-by: Sandrine Bailleux <sandrine.bailleux@arm.com> Co-authored-by: Achin Gupta <achin.gupta@arm.com> Co-authored-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com> Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
45 lines
1.2 KiB
Makefile
45 lines
1.2 KiB
Makefile
#
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# Copyright (c) 2013-2017, 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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################################################################################
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# Include SPM Makefile
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################################################################################
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ifeq (${ENABLE_SPM},1)
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$(info Including SPM makefile)
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include services/std_svc/spm/spm.mk
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endif
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include lib/psci/psci_lib.mk
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BL31_SOURCES += bl31/bl31_main.c \
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bl31/interrupt_mgmt.c \
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bl31/aarch64/bl31_entrypoint.S \
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bl31/aarch64/runtime_exceptions.S \
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bl31/aarch64/crash_reporting.S \
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bl31/bl31_context_mgmt.c \
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common/runtime_svc.c \
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plat/common/aarch64/platform_mp_stack.S \
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services/std_svc/std_svc_setup.c \
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${PSCI_LIB_SOURCES} \
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${SPM_SOURCES} \
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ifeq (${ENABLE_PMF}, 1)
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BL31_SOURCES += lib/pmf/pmf_main.c
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endif
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BL31_LINKERFILE := bl31/bl31.ld.S
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# Flag used to indicate if Crash reporting via console should be included
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# in BL31. This defaults to being present in DEBUG builds only
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ifndef CRASH_REPORTING
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CRASH_REPORTING := $(DEBUG)
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endif
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$(eval $(call assert_boolean,CRASH_REPORTING))
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$(eval $(call add_define,CRASH_REPORTING))
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