1##########################################################
2## Common mk file used for Android to compile and       ##
3## integrate OP-TEE related components                  ##
4## Following flags need to be defined in optee*.mk      ##
5##    OPTEE_OS_DIR                                      ##
6##    OPTEE_TA_TARGETS                                  ##
7##    OPTEE_CFG_ARM64_CORE                              ##
8##    OPTEE_PLATFORM                                    ##
9##    OPTEE_PLATFORM_FLAVOR                             ##
10##    OPTEE_EXTRA_FLAGS (optional)                      ##
11## And BUILD_OPTEE_MK needs to be defined in optee*.mk  ##
12## to point to this file                                ##
13##                                                      ##
14## local_module needs to be defined before including    ##
15## this file to build TAs                               ##
16##                                                      ##
17##########################################################
18
19##########################################################
20## define common variables, like TA_DEV_KIT_DIR         ##
21##########################################################
22TOP_ROOT_ABS := $(realpath $(TOP))
23
24PREBUILT_MAKE ?= prebuilts/build-tools/linux-x86/bin/make
25# we need this check because the Pie build does not have
26# this prebuilt make tool
27ifneq (,$(wildcard $(PREBUILT_MAKE)))
28# for master and versions which has prebuilt make
29HOST_MAKE := $(PREBUILT_MAKE)
30
31# The AOSP build tool is not the regular make,
32# that it adds -jN to $(MAKE), and that we should preserve
33# the flag or we would lose parallel build
34# The MAKE is redefined here in AOSP ckati:
35#   https://android.googlesource.com/platform/build/kati/+/master/main.cc#100
36ifneq (,$(filter -j%, $(MAKE)))
37HOST_MAKE += $(filter -j%, $(MAKE))
38endif
39
40else
41# For P and old versions which does not have prebuilt make,
42# let's use MAKE as what we did before
43HOST_MAKE := $(MAKE)
44endif
45
46
47# OPTEE_OUT_DIR could be exported explicitly
48# if PRODUCT_OUT is not the default out directory in aosp workspace
49OPTEE_OUT_DIR ?= $(PRODUCT_OUT)/optee
50ABS_OPTEE_OUT_DIR ?= $(realpath $(PRODUCT_OUT))/optee
51OPTEE_TA_OUT_DIR ?= $(OPTEE_OUT_DIR)/ta
52ABS_OPTEE_TA_OUT_DIR ?= $(ABS_OPTEE_OUT_DIR)/ta
53# Set so that OP-TEE clients can find the installed dev-kit, which
54# depends on platform and its OP-TEE word-size.
55OPTEE_OS_OUT_DIR ?= $(OPTEE_OUT_DIR)/arm-plat-$(OPTEE_PLATFORM)
56ABS_OPTEE_OS_OUT_DIR := $(ABS_OPTEE_OUT_DIR)/arm-plat-$(OPTEE_PLATFORM)
57TA_DEV_KIT_DIR := $(ABS_OPTEE_OS_OUT_DIR)/export-${OPTEE_TA_TARGETS}
58
59CROSS_COMPILE64 := $(TOP_ROOT_ABS)/$(TARGET_TOOLS_PREFIX)
60CROSS_COMPILE_LINE := CROSS_COMPILE64="$(CROSS_COMPILE64)"
61ifneq ($(strip $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)),)
62CROSS_COMPILE32 := $(TOP_ROOT_ABS)/$($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)
63CROSS_COMPILE_LINE += CROSS_COMPILE32="$(CROSS_COMPILE32)"
64endif
65
66OPTEE_BIN := $(OPTEE_OS_OUT_DIR)/core/tee.bin
67
68$(OPTEE_BIN) : $(sort $(shell find -L $(OPTEE_OS_DIR)))
69
70###########################################################
71## define making rules for $(OPTEE_BIN) target, and add  ##
72## condition check to make it only be defined once       ##
73## even though this mk file might be included multiple   ##
74## times. The process to generate $(OPTEE_BIN) file will ##
75## generate the header files under                       ##
76## $(TA_DEV_KIT_DIR)/host_include too.                   ##
77## And the $(OPTEE_BIN) will be used as dependency for   ##
78## other projects                                        ##
79###########################################################
80ifneq (true,$(BUILD_OPTEE_OS_DEFINED))
81BUILD_OPTEE_OS_DEFINED := true
82$(OPTEE_BIN):
83	@echo "Start building optee_os..."
84	+$(HOST_MAKE) -C $(TOP_ROOT_ABS)/$(OPTEE_OS_DIR) \
85		O=$(ABS_OPTEE_OS_OUT_DIR) \
86		CFG_USER_TA_TARGETS=$(OPTEE_TA_TARGETS) \
87		CFG_ARM64_core=$(OPTEE_CFG_ARM64_CORE) \
88		PLATFORM=$(OPTEE_PLATFORM) \
89		PLATFORM_FLAVOR=$(OPTEE_PLATFORM_FLAVOR) \
90		$(CROSS_COMPILE_LINE) \
91		$(OPTEE_EXTRA_FLAGS)
92	@echo "Finished building optee_os..."
93
94endif
95
96##########################################################
97## Lines for building TAs automatically                 ##
98## will only be included in Android.mk for TAs          ##
99## local_module:                                        ##
100##     need to be defined before include for this       ##
101##########################################################
102ifneq (false,$(INCLUDE_FOR_BUILD_TA))
103include $(CLEAR_VARS)
104
105LOCAL_MODULE := $(local_module)
106LOCAL_PREBUILT_MODULE_FILE := $(OPTEE_TA_OUT_DIR)/$(LOCAL_MODULE)
107LOCAL_MODULE_PATH := $(TARGET_OUT_VENDOR)/lib/optee_armtz
108LOCAL_MODULE_CLASS := EXECUTABLES
109LOCAL_MODULE_TAGS := optional
110
111TA_TMP_DIR := $(subst /,_,$(LOCAL_PATH))
112TA_TMP_FILE := $(OPTEE_TA_OUT_DIR)/$(TA_TMP_DIR)/$(LOCAL_MODULE)
113$(LOCAL_PREBUILT_MODULE_FILE): $(TA_TMP_FILE)
114	@mkdir -p $(dir $@)
115	cp -vf $< $@
116
117TA_TMP_FILE_DEPS :=
118ifneq ($(local_module_deps), )
119$(foreach dep,$(local_module_deps), $(eval TA_TMP_FILE_DEPS += $(TARGET_OUT_VENDOR)/lib/optee_armtz/$(dep)))
120endif
121$(TA_TMP_FILE): $(TA_TMP_FILE_DEPS)
122$(TA_TMP_FILE): PRIVATE_TA_SRC_DIR := $(LOCAL_PATH)
123$(TA_TMP_FILE): PRIVATE_TA_TMP_FILE := $(TA_TMP_FILE)
124$(TA_TMP_FILE): PRIVATE_TA_TMP_DIR := $(TA_TMP_DIR)
125$(TA_TMP_FILE): $(OPTEE_BIN)
126	@echo "Start building TA for $(PRIVATE_TA_SRC_DIR) $(PRIVATE_TA_TMP_FILE)..."
127	+$(HOST_MAKE) -C $(TOP_ROOT_ABS)/$(PRIVATE_TA_SRC_DIR) O=$(ABS_OPTEE_TA_OUT_DIR)/$(PRIVATE_TA_TMP_DIR) \
128		TA_DEV_KIT_DIR=$(TA_DEV_KIT_DIR) \
129		$(CROSS_COMPILE_LINE)
130	@echo "Finished building TA for $(PRIVATE_TA_SRC_DIR) $(PRIVATE_TA_TMP_FILE)..."
131
132include $(BUILD_PREBUILT)
133local_module_deps :=
134endif
135