Commit | Line | Data |
---|---|---|
d2d91247 YK |
1 | #Android makefile to build kernel as a part of Android Build |
2 | ||
3 | ifeq ($(KERNEL_DEFCONFIG),) | |
4 | $(error KERNEL_DEFCONFIG must be set as environment variable) | |
5 | endif | |
6 | ||
7 | ifeq ($(INSTALLED_KERNEL_TARGET),) | |
cd6d3d7e | 8 | KERNEL_OBJECTS := $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ |
d2d91247 | 9 | INSTALLED_KERNEL_TARGET := $(PRODUCT_OUT)/kernel |
5e65f8b9 | 10 | INSTALLED_DTBOIMAGE_TARGET := $(PRODUCT_OUT)/dtbo.img |
48b1217f | 11 | BOARD_PREBUILT_DTBOIMAGE := $(PRODUCT_OUT)/prebuilt_dtbo.img |
d2d91247 | 12 | INSTALLED_DTB_TARGET := $(PRODUCT_OUT)/dtb.img |
215c2e67 YK |
13 | BOARD_MKBOOTIMG_ARGS += \ |
14 | --second $(INSTALLED_DTB_TARGET) \ | |
15 | --second_offset 0 | |
d2d91247 YK |
16 | endif |
17 | ||
18 | TARGET_KERNEL_ARCH := $(strip $(TARGET_KERNEL_ARCH)) | |
19 | ifeq ($(TARGET_KERNEL_ARCH),) | |
20 | KERNEL_ARCH := arm64 | |
21 | else | |
22 | KERNEL_ARCH := $(TARGET_KERNEL_ARCH) | |
23 | endif | |
24 | ||
25 | ifeq ($(CROSS_COMPILE),) | |
26 | KERNEL_CROSS_COMPILE := aarch64-linux-android- | |
27 | else | |
28 | KERNEL_CROSS_COMPILE := $(CROSS_COMPILE) | |
29 | endif | |
30 | ||
b23ef602 YK |
31 | SOONG_GLOBAL_CONFIG := build/soong/cc/config/global.go |
32 | CLANG_VERSION := $(shell grep "ClangDefaultVersion" $(SOONG_GLOBAL_CONFIG) | grep -o "clang-[0-9][0-9]*") | |
33 | CLANG_PATH := prebuilts/clang/host/linux-x86 | |
34 | CC :=$(PWD)/$(CLANG_PATH)/$(CLANG_VERSION)/bin/clang | |
35 | ||
f0c3da58 MK |
36 | KERNEL_LTO_ON = True |
37 | ifneq ($(KERNEL_LTO_ON),) | |
38 | LLVM_AR :=$(PWD)/$(CLANG_PATH)/$(CLANG_VERSION)/bin/llvm-ar | |
39 | LLVM_DIS :=$(PWD)/$(CLANG_PATH)/$(CLANG_VERSION)/bin/llvm-dis | |
40 | LTO_LLVM_LIB_BASE = $(PWD)/$(CLANG_PATH)/$(CLANG_VERSION)/lib64/ | |
41 | LLVM_OPTIONS := LLVM_AR=$(LLVM_AR) LLVM_DIS=$(LLVM_DIS) LTO_LLVM_LIB_BASE=$(LTO_LLVM_LIB_BASE) | |
42 | else | |
43 | LLVM_OPTIONS := | |
44 | endif | |
45 | ||
d2d91247 YK |
46 | ifeq ($(CLANG_TRIPLE),) |
47 | CLANG_TRIPLE := aarch64-linux-gnu- | |
48 | else | |
49 | CLANG_TRIPLE := $(CLANG_TRIPLE) | |
50 | endif | |
51 | ||
52 | ifeq ($(TARGET_PREBUILT_KERNEL),) | |
53 | ||
cd6d3d7e YK |
54 | KERNEL_CONFIG := $(KERNEL_OBJECTS)/.config |
55 | KERNEL_BOOT := $(KERNEL_OBJECTS)/arch/$(KERNEL_ARCH)/boot | |
d2d91247 YK |
56 | KERNEL_BIN := $(KERNEL_BOOT)/Image |
57 | KERNEL_DTB_DIR := $(KERNEL_BOOT)/dts/exynos | |
f573bcc7 | 58 | KERNEL_DTB := $(KERNEL_DTB_DIR)/exynos9610.dtb |
d2d91247 YK |
59 | MKDTIMG := $(HOST_OUT_EXECUTABLES)/mkdtimg |
60 | ||
cd6d3d7e YK |
61 | TARGET_KERNEL_SOURCE := kernel/$(TARGET_KERNEL) |
62 | KERNEL_DTB_SOURCE_DIR := $(TARGET_KERNEL_SOURCE)/arch/$(KERNEL_ARCH)/boot/dts/exynos | |
63 | KERNEL_DTBO_CFG := $(KERNEL_DTB_SOURCE_DIR)/exynos9610_dtboimg.cfg | |
dcaf6363 SK |
64 | KERNEL_MERGE_CONFIG := $(TARGET_KERNEL_SOURCE)/scripts/kconfig/merge_config.sh |
65 | KERNEL_CONFIG_BASE := $(TARGET_KERNEL_SOURCE)/arch/$(KERNEL_ARCH)/configs | |
66 | KERNEL_DEFCONFIG_PATH := $(KERNEL_CONFIG_BASE)/$(KERNEL_DEFCONFIG) | |
67 | ||
d2d91247 YK |
68 | ifeq ($(KERNEL_DEFCONFIG),) |
69 | $(error Kernel configuration not defined, cannot build kernel) | |
70 | else | |
71 | ||
dcaf6363 | 72 | ifeq ($(TARGET_BUILD_VARIANT),eng) |
cd6d3d7e | 73 | MAKE_CONFIG_CMD := $(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(PWD)/$(KERNEL_OBJECTS) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(KERNEL_DEFCONFIG) |
dcaf6363 SK |
74 | else |
75 | ifeq ($(TARGET_BUILD_VARIANT),userdebug) | |
76 | KERNEL_USER_CFG := $(KERNEL_CONFIG_BASE)/$(TARGET_SOC)_userdebug.cfg | |
77 | else | |
78 | KERNEL_USER_CFG := $(KERNEL_CONFIG_BASE)/$(TARGET_SOC)_user.cfg | |
79 | endif | |
80 | MAKE_CONFIG_CMD := ARCH=$(KERNEL_ARCH) $(KERNEL_MERGE_CONFIG) -m -O $(TARGET_KERNEL_SOURCE) $(KERNEL_DEFCONFIG_PATH) $(KERNEL_USER_CFG); | |
cd6d3d7e YK |
81 | MAKE_CONFIG_CMD += $(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(PWD)/$(KERNEL_OBJECTS) ARCH=$(KERNEL_ARCH) KCONFIG_ALLCONFIG=.config alldefconfig; |
82 | MAKE_CONFIG_CMD += $(MAKE) -C $(TARGET_KERNEL_SOURCE) distclean | |
dcaf6363 SK |
83 | endif |
84 | ||
d2d91247 YK |
85 | ifeq ($(N_KERNEL_BUILD_THREAD),) |
86 | N_KERNEL_BUILD_THREAD := 1 | |
87 | endif | |
88 | ||
89 | TARGET_PREBUILT_KERNEL := $(KERNEL_BIN) | |
90 | ||
a948ffd0 | 91 | .PHONY: phony-rebuild |
d2d91247 YK |
92 | |
93 | .PHONY: kernel | |
94 | kernel: $(KERNEL_BIN) | |
95 | ||
96 | .PHONY: kernel-distclean | |
97 | kernel-distclean: | |
98 | $(MAKE) -C $(TARGET_KERNEL_SOURCE) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) distclean | |
99 | ||
a948ffd0 | 100 | $(KERNEL_CONFIG): phony-rebuild |
d2d91247 | 101 | $(hide) echo "make $(KERNEL_DEFCONFIG)" |
dcaf6363 | 102 | $(MAKE_CONFIG_CMD) |
d2d91247 YK |
103 | |
104 | $(KERNEL_BIN): $(KERNEL_CONFIG) | |
105 | $(hide) echo "Building kernel..." | |
f0c3da58 | 106 | $(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(PWD)/$(KERNEL_OBJECTS) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) CLANG_TRIPLE=$(CLANG_TRIPLE) CC=$(CC) $(LLVM_OPTIONS) -j$(N_KERNEL_BUILD_THREAD) |
d2d91247 | 107 | |
48b1217f | 108 | $(INSTALLED_KERNEL_TARGET): $(INSTALLED_DTBOIMAGE_TARGET) |
d2d91247 YK |
109 | cp $(KERNEL_BIN) $(INSTALLED_KERNEL_TARGET) |
110 | cp $(KERNEL_DTB) $(INSTALLED_DTB_TARGET) | |
48b1217f TA |
111 | |
112 | $(BOARD_PREBUILT_DTBOIMAGE): $(MKDTIMG) $(KERNEL_DTBO_CFG) $(KERNEL_BIN) | |
5e65f8b9 | 113 | $(hide) echo "Building DTBOIMAGE..." |
cd6d3d7e | 114 | $(MKDTIMG) cfg_create $@ $(KERNEL_DTBO_CFG) -d $(KERNEL_OBJECTS) |
d2d91247 YK |
115 | |
116 | endif #TARGET_PREBUILT_KERNEL | |
117 | endif #KERNEL_DEFCONFIG |