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aosp_optee.mk
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##########################################################
## Common mk file used for Android to compile and ##
## integrate OP-TEE related components ##
## Following flags need to be defined in optee*.mk ##
## OPTEE_OS_DIR ##
## OPTEE_TA_TARGETS ##
## OPTEE_CFG_ARM64_CORE ##
## OPTEE_PLATFORM ##
## OPTEE_PLATFORM_FLAVOR ##
## OPTEE_EXTRA_FLAGS (optional) ##
## OPTEE_EXTRA_TA_FLAGS (optional) ##
## And BUILD_OPTEE_MK needs to be defined in optee*.mk ##
## to point to this file ##
## ##
## local_module needs to be defined before including ##
## this file to build TAs ##
## ##
##########################################################
##########################################################
## define common variables, like TA_DEV_KIT_DIR ##
##########################################################
TOP_ROOT_ABS := $(realpath $(TOP))
PREBUILT_MAKE ?= prebuilts/build-tools/linux-x86/bin/make
# we need this check because the Pie build does not have
# this prebuilt make tool
ifneq (,$(wildcard $(PREBUILT_MAKE)))
# for master and versions which has prebuilt make
HOST_MAKE := $(PREBUILT_MAKE)
# The AOSP build tool is not the regular make,
# that it adds -jN to $(MAKE), and that we should preserve
# the flag or we would lose parallel build
# The MAKE is redefined here in AOSP ckati:
# https://android.googlesource.com/platform/build/kati/+/master/main.cc#100
ifneq (,$(filter -j%, $(MAKE)))
HOST_MAKE += $(filter -j%, $(MAKE))
endif
else
# For P and old versions which does not have prebuilt make,
# let's use MAKE as what we did before
HOST_MAKE := $(MAKE)
endif
# OPTEE_OUT_DIR could be exported explicitly
# if PRODUCT_OUT is not the default out directory in aosp workspace
OPTEE_OUT_DIR ?= $(PRODUCT_OUT)/optee
ABS_OPTEE_OUT_DIR ?= $(realpath $(PRODUCT_OUT))/optee
OPTEE_TA_OUT_DIR ?= $(OPTEE_OUT_DIR)/ta
ABS_OPTEE_TA_OUT_DIR ?= $(ABS_OPTEE_OUT_DIR)/ta
# Set so that OP-TEE clients can find the installed dev-kit, which
# depends on platform and its OP-TEE word-size.
OPTEE_OS_OUT_DIR ?= $(OPTEE_OUT_DIR)/arm-plat-$(OPTEE_PLATFORM)
ABS_OPTEE_OS_OUT_DIR := $(ABS_OPTEE_OUT_DIR)/arm-plat-$(OPTEE_PLATFORM)
TA_DEV_KIT_DIR := $(ABS_OPTEE_OS_OUT_DIR)/export-${OPTEE_TA_TARGETS}
CROSS_COMPILE64 ?= $(TOP_ROOT_ABS)/$(TARGET_TOOLS_PREFIX)
CROSS_COMPILE_LINE := CROSS_COMPILE64="$(CROSS_COMPILE64)"
ifneq ($(strip $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)),)
CROSS_COMPILE32 ?= $(TOP_ROOT_ABS)/$($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)
CROSS_COMPILE_LINE += CROSS_COMPILE32="$(CROSS_COMPILE32)"
endif
OPTEE_BIN := $(OPTEE_OS_OUT_DIR)/core/tee.bin
$(OPTEE_BIN) : $(sort $(shell find -L $(OPTEE_OS_DIR)))
###########################################################
## define making rules for $(OPTEE_BIN) target, and add ##
## condition check to make it only be defined once ##
## even though this mk file might be included multiple ##
## times. The process to generate $(OPTEE_BIN) file will ##
## generate the header files under ##
## $(TA_DEV_KIT_DIR)/host_include too. ##
## And the $(OPTEE_BIN) will be used as dependency for ##
## other projects ##
###########################################################
ifneq (true,$(BUILD_OPTEE_OS_DEFINED))
BUILD_OPTEE_OS_DEFINED := true
$(OPTEE_BIN):
@echo "Start building optee_os..."
+$(HOST_MAKE) -C $(TOP_ROOT_ABS)/$(OPTEE_OS_DIR) \
O=$(ABS_OPTEE_OS_OUT_DIR) \
CFG_USER_TA_TARGETS=$(OPTEE_TA_TARGETS) \
CFG_ARM64_core=$(OPTEE_CFG_ARM64_CORE) \
PLATFORM=$(OPTEE_PLATFORM) \
PLATFORM_FLAVOR=$(OPTEE_PLATFORM_FLAVOR) \
$(CROSS_COMPILE_LINE) \
$(OPTEE_EXTRA_FLAGS)
@echo "Finished building optee_os..."
endif
##########################################################
## Lines for building TAs automatically ##
## will only be included in Android.mk for TAs ##
## local_module: ##
## need to be defined before include for this ##
##########################################################
ifneq (false,$(INCLUDE_FOR_BUILD_TA))
include $(CLEAR_VARS)
LOCAL_MODULE := $(local_module)
LOCAL_PREBUILT_MODULE_FILE := $(OPTEE_TA_OUT_DIR)/$(LOCAL_MODULE)
LOCAL_MODULE_PATH := $(TARGET_OUT_VENDOR)/lib/optee_armtz
LOCAL_MODULE_CLASS := EXECUTABLES
LOCAL_MODULE_TAGS := optional
TA_TMP_DIR := $(subst /,_,$(LOCAL_PATH))
TA_TMP_FILE := $(OPTEE_TA_OUT_DIR)/$(TA_TMP_DIR)/$(LOCAL_MODULE)
$(LOCAL_PREBUILT_MODULE_FILE): $(TA_TMP_FILE)
@mkdir -p $(dir $@)
cp -vf $< $@
TA_TMP_FILE_DEPS :=
ifneq ($(local_module_deps), )
$(foreach dep,$(local_module_deps), $(eval TA_TMP_FILE_DEPS += $(TARGET_OUT_VENDOR)/lib/optee_armtz/$(dep)))
endif
$(TA_TMP_FILE): $(TA_TMP_FILE_DEPS)
$(TA_TMP_FILE): PRIVATE_TA_SRC_DIR := $(LOCAL_PATH)
$(TA_TMP_FILE): PRIVATE_TA_TMP_FILE := $(TA_TMP_FILE)
$(TA_TMP_FILE): PRIVATE_TA_TMP_DIR := $(TA_TMP_DIR)
$(TA_TMP_FILE): $(OPTEE_BIN)
@echo "Start building TA for $(PRIVATE_TA_SRC_DIR) $(PRIVATE_TA_TMP_FILE)..."
+$(HOST_MAKE) -C $(TOP_ROOT_ABS)/$(PRIVATE_TA_SRC_DIR) O=$(ABS_OPTEE_TA_OUT_DIR)/$(PRIVATE_TA_TMP_DIR) \
TA_DEV_KIT_DIR=$(TA_DEV_KIT_DIR) \
$(CROSS_COMPILE_LINE) \
$(OPTEE_EXTRA_TA_FLAGS)
@echo "Finished building TA for $(PRIVATE_TA_SRC_DIR) $(PRIVATE_TA_TMP_FILE)..."
include $(BUILD_PREBUILT)
local_module_deps :=
endif