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diff --git a/bl31/bl31.mk b/bl31/bl31.mk
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+#
+# Copyright (c) 2013-2022, ARM Limited and Contributors. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+################################################################################
+# Include Makefile for the SPM-MM implementation
+################################################################################
+ifeq (${SUPPORT_UNKNOWN_MPID},1)
+ ifeq (${DEBUG},0)
+ $(warning WARNING: SUPPORT_UNKNOWN_MPID enabled)
+ endif
+endif
+
+ifeq (${SPM_MM},1)
+ ifeq (${EL3_EXCEPTION_HANDLING},0)
+ $(error EL3_EXCEPTION_HANDLING must be 1 for SPM-MM support)
+ else
+ $(info Including SPM Management Mode (MM) makefile)
+ include services/std_svc/spm/common/spm.mk
+ include services/std_svc/spm/spm_mm/spm_mm.mk
+ endif
+endif
+
+include lib/extensions/amu/amu.mk
+include lib/mpmm/mpmm.mk
+
+ifeq (${SPMC_AT_EL3},1)
+ $(warning "EL3 SPMC is an experimental feature")
+ $(info Including EL3 SPMC makefile)
+ include services/std_svc/spm/common/spm.mk
+ include services/std_svc/spm/el3_spmc/spmc.mk
+endif
+
+include lib/psci/psci_lib.mk
+
+BL31_SOURCES += bl31/bl31_main.c \
+ bl31/interrupt_mgmt.c \
+ bl31/aarch64/bl31_entrypoint.S \
+ bl31/aarch64/crash_reporting.S \
+ bl31/aarch64/ea_delegate.S \
+ bl31/aarch64/runtime_exceptions.S \
+ bl31/bl31_context_mgmt.c \
+ common/runtime_svc.c \
+ lib/cpus/aarch64/dsu_helpers.S \
+ plat/common/aarch64/platform_mp_stack.S \
+ services/arm_arch_svc/arm_arch_svc_setup.c \
+ services/std_svc/std_svc_setup.c \
+ ${PSCI_LIB_SOURCES} \
+ ${SPMD_SOURCES} \
+ ${SPM_MM_SOURCES} \
+ ${SPMC_SOURCES} \
+ ${SPM_SOURCES}
+
+ifeq (${DISABLE_MTPMU},1)
+BL31_SOURCES += lib/extensions/mtpmu/aarch64/mtpmu.S
+endif
+
+ifeq (${ENABLE_PMF}, 1)
+BL31_SOURCES += lib/pmf/pmf_main.c
+endif
+
+include lib/debugfs/debugfs.mk
+ifeq (${USE_DEBUGFS},1)
+ BL31_SOURCES += $(DEBUGFS_SRCS)
+endif
+
+ifeq (${EL3_EXCEPTION_HANDLING},1)
+BL31_SOURCES += bl31/ehf.c
+endif
+
+ifeq (${SDEI_SUPPORT},1)
+ifeq (${EL3_EXCEPTION_HANDLING},0)
+ $(error EL3_EXCEPTION_HANDLING must be 1 for SDEI support)
+endif
+BL31_SOURCES += services/std_svc/sdei/sdei_dispatch.S \
+ services/std_svc/sdei/sdei_event.c \
+ services/std_svc/sdei/sdei_intr_mgmt.c \
+ services/std_svc/sdei/sdei_main.c \
+ services/std_svc/sdei/sdei_state.c
+endif
+
+ifeq (${TRNG_SUPPORT},1)
+BL31_SOURCES += services/std_svc/trng/trng_main.c \
+ services/std_svc/trng/trng_entropy_pool.c
+endif
+
+ifeq (${ENABLE_SPE_FOR_LOWER_ELS},1)
+BL31_SOURCES += lib/extensions/spe/spe.c
+endif
+
+ifeq (${ENABLE_AMU},1)
+BL31_SOURCES += ${AMU_SOURCES}
+endif
+
+ifeq (${ENABLE_MPMM},1)
+BL31_SOURCES += ${MPMM_SOURCES}
+endif
+
+ifeq (${ENABLE_SME_FOR_NS},1)
+BL31_SOURCES += lib/extensions/sme/sme.c
+BL31_SOURCES += lib/extensions/sve/sve.c
+else
+ifeq (${ENABLE_SVE_FOR_NS},1)
+BL31_SOURCES += lib/extensions/sve/sve.c
+endif
+endif
+
+ifeq (${ENABLE_MPAM_FOR_LOWER_ELS},1)
+BL31_SOURCES += lib/extensions/mpam/mpam.c
+endif
+
+ifeq (${ENABLE_TRBE_FOR_NS},1)
+BL31_SOURCES += lib/extensions/trbe/trbe.c
+endif
+
+ifeq (${ENABLE_BRBE_FOR_NS},1)
+BL31_SOURCES += lib/extensions/brbe/brbe.c
+endif
+
+ifeq (${ENABLE_SYS_REG_TRACE_FOR_NS},1)
+BL31_SOURCES += lib/extensions/sys_reg_trace/aarch64/sys_reg_trace.c
+endif
+
+ifeq (${ENABLE_TRF_FOR_NS},1)
+BL31_SOURCES += lib/extensions/trf/aarch64/trf.c
+endif
+
+ifeq (${WORKAROUND_CVE_2017_5715},1)
+BL31_SOURCES += lib/cpus/aarch64/wa_cve_2017_5715_bpiall.S \
+ lib/cpus/aarch64/wa_cve_2017_5715_mmu.S
+endif
+
+ifeq ($(SMC_PCI_SUPPORT),1)
+BL31_SOURCES += services/std_svc/pci_svc.c
+endif
+
+ifeq (${ENABLE_RME},1)
+include lib/gpt_rme/gpt_rme.mk
+
+BL31_SOURCES += ${GPT_LIB_SRCS} \
+ ${RMMD_SOURCES}
+endif
+
+ifeq ($(FEATURE_DETECTION),1)
+BL31_SOURCES += common/feat_detect.c
+endif
+
+ifeq (${DRTM_SUPPORT},1)
+BL31_SOURCES += services/std_svc/drtm/drtm_main.c \
+ services/std_svc/drtm/drtm_dma_prot.c \
+ services/std_svc/drtm/drtm_res_address_map.c \
+ services/std_svc/drtm/drtm_measurements.c \
+ services/std_svc/drtm/drtm_remediation.c \
+ ${MBEDTLS_SOURCES}
+endif
+
+BL31_LINKERFILE := bl31/bl31.ld.S
+
+# Flag used to indicate if Crash reporting via console should be included
+# in BL31. This defaults to being present in DEBUG builds only
+ifndef CRASH_REPORTING
+CRASH_REPORTING := $(DEBUG)
+endif
+
+$(eval $(call assert_booleans,\
+ $(sort \
+ CRASH_REPORTING \
+ EL3_EXCEPTION_HANDLING \
+ SDEI_SUPPORT \
+)))
+
+$(eval $(call add_defines,\
+ $(sort \
+ CRASH_REPORTING \
+ EL3_EXCEPTION_HANDLING \
+ SDEI_SUPPORT \
+)))