build
Revision | 37040a1239d5d69cd90838c38a58a635248ea597 (tree) |
---|---|
Time | 2014-12-27 21:41:42 |
Author | Chih-Wei Huang <cwhuang@linu...> |
Commiter | Chih-Wei Huang |
android-x86: add kernel building rules
@@ -0,0 +1,111 @@ | ||
1 | +# | |
2 | +# Copyright (C) 2014 The Android-x86 Open Source Project | |
3 | +# | |
4 | +# Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | +# you may not use this file except in compliance with the License. | |
6 | +# You may obtain a copy of the License at | |
7 | +# | |
8 | +# http://www.apache.org/licenses/LICENSE-2.0 | |
9 | +# | |
10 | + | |
11 | +ifeq ($(KBUILD_OUTPUT),) | |
12 | +ifeq ($(TARGET_PREBUILT_KERNEL),) | |
13 | + | |
14 | +KERNEL_DIR ?= kernel | |
15 | + | |
16 | +ifneq ($(filter x86%,$(TARGET_ARCH)),) | |
17 | +TARGET_KERNEL_ARCH ?= $(TARGET_ARCH) | |
18 | +KERNEL_TARGET := bzImage | |
19 | +TARGET_KERNEL_CONFIG ?= android-$(TARGET_KERNEL_ARCH)_defconfig | |
20 | +KERNEL_CONFIG_DIR := arch/x86/configs | |
21 | +endif | |
22 | +ifeq ($(TARGET_ARCH),arm) | |
23 | +KERNEL_TARGET := zImage | |
24 | +TARGET_KERNEL_CONFIG ?= goldfish_defconfig | |
25 | +KERNEL_CONFIG_DIR := arch/arm/configs | |
26 | +endif | |
27 | + | |
28 | +KBUILD_OUTPUT := $(abspath $(TARGET_OUT_INTERMEDIATES)/kernel) | |
29 | +mk_kernel := + $(hide) $(MAKE) -C $(KERNEL_DIR) O=$(KBUILD_OUTPUT) ARCH=$(TARGET_ARCH) $(if $(SHOW_COMMANDS),V=1) | |
30 | + | |
31 | +KERNEL_CONFIG_FILE := $(if $(wildcard $(TARGET_KERNEL_CONFIG)),$(TARGET_KERNEL_CONFIG),$(KERNEL_DIR)/$(KERNEL_CONFIG_DIR)/$(TARGET_KERNEL_CONFIG)) | |
32 | + | |
33 | +MOD_ENABLED := $(shell grep ^CONFIG_MODULES=y $(KERNEL_CONFIG_FILE)) | |
34 | +FIRMWARE_ENABLED := $(shell grep ^CONFIG_FIRMWARE_IN_KERNEL=y $(KERNEL_CONFIG_FILE)) | |
35 | + | |
36 | +# I understand Android build system discourage to use submake, | |
37 | +# but I don't want to write a complex Android.mk to build kernel. | |
38 | +# This is the simplest way I can think. | |
39 | +KERNEL_DOTCONFIG_FILE := $(KBUILD_OUTPUT)/.config | |
40 | +KERNEL_ARCH_CHANGED := $(if $(filter 0,$(shell grep -s ^$(if $(filter x86,$(TARGET_KERNEL_ARCH)),\#.)CONFIG_64BIT $(KERNEL_DOTCONFIG_FILE) | wc -l)),FORCE) | |
41 | +$(KERNEL_DOTCONFIG_FILE): $(KERNEL_CONFIG_FILE) $(KERNEL_ARCH_CHANGED) | $(ACP) | |
42 | + $(copy-file-to-new-target) | |
43 | + | |
44 | +# bison is needed to build kernel and external modules from source | |
45 | +BISON := $(HOST_OUT_EXECUTABLES)/bison$(HOST_EXECUTABLE_SUFFIX) | |
46 | + | |
47 | +BUILT_KERNEL_TARGET := $(KBUILD_OUTPUT)/arch/$(TARGET_ARCH)/boot/$(KERNEL_TARGET) | |
48 | +$(INSTALLED_KERNEL_TARGET): $(KERNEL_DOTCONFIG_FILE) $(BISON) | |
49 | + $(mk_kernel) oldnoconfig | |
50 | + $(mk_kernel) $(KERNEL_TARGET) $(if $(MOD_ENABLED),modules) | |
51 | + $(hide) $(ACP) -fp $(BUILT_KERNEL_TARGET) $@ | |
52 | + $(if $(FIRMWARE_ENABLED),$(mk_kernel) INSTALL_MOD_PATH=$(abspath $(TARGET_OUT)) firmware_install) | |
53 | + | |
54 | +ifneq ($(MOD_ENABLED),) | |
55 | +KERNEL_MODULES_DEP := $(firstword $(wildcard $(TARGET_OUT)/lib/modules/*/modules.dep)) | |
56 | +KERNEL_MODULES_DEP := $(if $(KERNEL_MODULES_DEP),$(KERNEL_MODULES_DEP),$(TARGET_OUT)/lib/modules) | |
57 | + | |
58 | +$(TARGET_OUT_INTERMEDIATES)/%.kmodule: $(INSTALLED_KERNEL_TARGET) | |
59 | + $(hide) cp -an $(EXTRA_KERNEL_MODULE_PATH_$*) $(TARGET_OUT_INTERMEDIATES)/$*.kmodule | |
60 | + @echo Building additional kernel module $* | |
61 | + $(mk_kernel) M=$(abspath $@) modules | |
62 | + | |
63 | +$(KERNEL_MODULES_DEP): $(INSTALLED_KERNEL_TARGET) $(patsubst %,$(TARGET_OUT_INTERMEDIATES)/%.kmodule,$(TARGET_EXTRA_KERNEL_MODULES)) | |
64 | + $(hide) rm -rf $(TARGET_OUT)/lib/modules | |
65 | + $(mk_kernel) INSTALL_MOD_PATH=$(abspath $(TARGET_OUT)) modules_install | |
66 | + + $(hide) for kmod in $(TARGET_EXTRA_KERNEL_MODULES) ; do \ | |
67 | + echo Installing additional kernel module $${kmod} ; \ | |
68 | + $(subst +,,$(subst $(hide),,$(mk_kernel))) INSTALL_MOD_PATH=$(abspath $(TARGET_OUT)) M=$(abspath $(TARGET_OUT_INTERMEDIATES))/$${kmod}.kmodule modules_install ; \ | |
69 | + done | |
70 | + $(hide) rm -f $(TARGET_OUT)/lib/modules/*/{build,source} | |
71 | +endif | |
72 | + | |
73 | +$(BUILT_SYSTEMIMAGE): $(KERNEL_MODULES_DEP) | |
74 | + | |
75 | +# rules to get source of Broadcom 802.11a/b/g/n hybrid device driver | |
76 | +# based on broadcomsetup.sh of Kyle Evans | |
77 | +WL_PATH := $(KERNEL_DIR)/drivers/net/wireless/wl | |
78 | +WL_ENABLED := $(if $(wildcard $(WL_PATH)),$(shell grep ^CONFIG_WL=[my] $(KERNEL_CONFIG_FILE))) | |
79 | +WL_ARCH_CHANGED := $(if $(shell file $(WL_PATH)/lib/wlc_hybrid.o_shipped | grep -s $(if $(filter x86,$(TARGET_KERNEL_ARCH)),80386,x86-64)),,FORCE) | |
80 | +ifeq ($(filter x86,$(TARGET_KERNEL_ARCH)),) | |
81 | +WL_SRC := $(WL_PATH)/hybrid-v35_64-nodebug-pcoem-6_30_223_141.tar.gz | |
82 | +else | |
83 | +WL_SRC := $(WL_PATH)/hybrid-v35-nodebug-pcoem-6_30_223_141.tar.gz | |
84 | +endif | |
85 | +$(WL_SRC): | |
86 | + @echo Downloading $(@F)... | |
87 | + $(hide) curl http://www.broadcom.com/docs/linux_sta/$(@F) > $@ | |
88 | +$(WL_PATH)/Makefile : $(WL_SRC) $(wildcard $(WL_PATH)/*.patch) $(WL_ARCH_CHANGED) $(KERNEL_ARCH_CHANGED) | |
89 | + $(hide) tar zxf $< -C $(@D) --overwrite && \ | |
90 | + patch -p5 -d $(@D) -i wl.patch && \ | |
91 | + patch -p1 -d $(@D) -i linux-recent.patch | |
92 | +$(INSTALLED_KERNEL_TARGET): $(if $(WL_ENABLED),$(WL_PATH)/Makefile) | |
93 | + | |
94 | +installclean: FILES += $(KBUILD_OUTPUT) $(INSTALLED_KERNEL_TARGET) | |
95 | + | |
96 | +TARGET_PREBUILT_KERNEL := $(INSTALLED_KERNEL_TARGET) | |
97 | + | |
98 | +.PHONY: kernel | |
99 | +kernel: $(TARGET_PREBUILT_KERNEL) | |
100 | + | |
101 | +else | |
102 | + | |
103 | +$(INSTALLED_KERNEL_TARGET): $(TARGET_PREBUILT_KERNEL) | $(ACP) | |
104 | + $(copy-file-to-new-target) | |
105 | +ifdef TARGET_PREBUILT_MODULES | |
106 | + mkdir -p $(TARGET_OUT)/lib | |
107 | + $(hide) cp -r $(TARGET_PREBUILT_MODULES) $(TARGET_OUT)/lib | |
108 | +endif | |
109 | + | |
110 | +endif # TARGET_PREBUILT_KERNEL | |
111 | +endif # KBUILD_OUTPUT |