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review.blissroms.org / platform_vendor_bliss / 4e65ba318c22e04205f66e2fb73c601edd70a197 / . / build / tasks / kernel.mk
blob: 16e8429c25ac704d8a3e3e9075af56613d8053da [file] [log] [blame]
Michael Bestas8d6c4372016-08-26 01:12:08 +0300[diff] [blame]1# Copyright (C) 2012 The CyanogenMod Project
2#
3# Licensed under the Apache License, Version 2.0 (the "License");
4# you may not use this file except in compliance with the License.
5# You may obtain a copy of the License at
6#
7# http://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14
15
16# Android makefile to build kernel as a part of Android Build
17#
18# Configuration
19# =============
20#
21# These config vars are usually set in BoardConfig.mk:
22#
23# TARGET_KERNEL_SOURCE = Kernel source dir, optional, defaults
24# to kernel/$(TARGET_DEVICE_DIR)
25# TARGET_KERNEL_CONFIG = Kernel defconfig
26# TARGET_KERNEL_VARIANT_CONFIG = Variant defconfig, optional
27# TARGET_KERNEL_SELINUX_CONFIG = SELinux defconfig, optional
28# TARGET_KERNEL_ADDITIONAL_CONFIG = Additional defconfig, optional
29# TARGET_KERNEL_ARCH = Kernel Arch
30# TARGET_KERNEL_HEADER_ARCH = Optional Arch for kernel headers if
31# different from TARGET_KERNEL_ARCH
Michael Bestas8d6c4372016-08-26 01:12:08 +0300[diff] [blame]32# TARGET_KERNEL_CROSS_COMPILE_PREFIX = Compiler prefix (e.g. arm-eabi-)
Michael Bestas1b5a1d62016-09-28 20:16:25 +0300[diff] [blame]33# defaults to arm-linux-androidkernel- for arm
34# aarch64-linux-androidkernel- for arm64
35# x86_64-linux-androidkernel- for x86
Michael Bestas8d6c4372016-08-26 01:12:08 +0300[diff] [blame]36#
Dan Pasanen1d2cf732017-01-24 15:46:13 -0600[diff] [blame]37# BOARD_KERNEL_IMAGE_NAME = Built image name
38# for ARM use: zImage
39# for ARM64 use: Image.gz
40# for uncompressed use: Image
41# If using an appended DT, append '-dtb'
42# to the end of the image name.
43# For example, for ARM devices,
44# use zImage-dtb instead of zImage.
Michael Bestas8d6c4372016-08-26 01:12:08 +0300[diff] [blame]45#
46# KERNEL_TOOLCHAIN_PREFIX = Overrides TARGET_KERNEL_CROSS_COMPILE_PREFIX,
47# Set this var in shell to override
48# toolchain specified in BoardConfig.mk
49# KERNEL_TOOLCHAIN = Path to toolchain, if unset, assumes
50# TARGET_KERNEL_CROSS_COMPILE_PREFIX
51# is in PATH
52# USE_CCACHE = Enable ccache (global Android flag)
53#
54# NEED_KERNEL_MODULE_ROOT = Optional, if true, install kernel
55# modules in root instead of system
56
57
58TARGET_AUTO_KDIR := $(shell echo $(TARGET_DEVICE_DIR) | sed -e 's/^device/kernel/g')
59
60## Externally influenced variables
61# kernel location - optional, defaults to kernel/<vendor>/<device>
62TARGET_KERNEL_SOURCE ?= $(TARGET_AUTO_KDIR)
63KERNEL_SRC := $(TARGET_KERNEL_SOURCE)
64# kernel configuration - mandatory
65KERNEL_DEFCONFIG := $(TARGET_KERNEL_CONFIG)
66VARIANT_DEFCONFIG := $(TARGET_KERNEL_VARIANT_CONFIG)
67SELINUX_DEFCONFIG := $(TARGET_KERNEL_SELINUX_CONFIG)
68
69## Internal variables
70KERNEL_OUT := $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ
71KERNEL_CONFIG := $(KERNEL_OUT)/.config
72KERNEL_OUT_STAMP := $(KERNEL_OUT)/.mkdir_stamp
73
74TARGET_KERNEL_ARCH := $(strip $(TARGET_KERNEL_ARCH))
75ifeq ($(TARGET_KERNEL_ARCH),)
76KERNEL_ARCH := $(TARGET_ARCH)
77else
78KERNEL_ARCH := $(TARGET_KERNEL_ARCH)
79endif
80
81ifeq ($(KERNEL_ARCH),x86_64)
82KERNEL_DEFCONFIG_ARCH := x86
83else
84KERNEL_DEFCONFIG_ARCH := $(KERNEL_ARCH)
85endif
86KERNEL_DEFCONFIG_SRC := $(KERNEL_SRC)/arch/$(KERNEL_DEFCONFIG_ARCH)/configs/$(KERNEL_DEFCONFIG)
87
88TARGET_KERNEL_HEADER_ARCH := $(strip $(TARGET_KERNEL_HEADER_ARCH))
89ifeq ($(TARGET_KERNEL_HEADER_ARCH),)
90KERNEL_HEADER_ARCH := $(KERNEL_ARCH)
91else
92KERNEL_HEADER_ARCH := $(TARGET_KERNEL_HEADER_ARCH)
93endif
94
95KERNEL_HEADER_DEFCONFIG := $(strip $(KERNEL_HEADER_DEFCONFIG))
96ifeq ($(KERNEL_HEADER_DEFCONFIG),)
97KERNEL_HEADER_DEFCONFIG := $(KERNEL_DEFCONFIG)
98endif
99
Dan Pasanen1d2cf732017-01-24 15:46:13 -0600[diff] [blame]100ifeq ($(BOARD_KERNEL_IMAGE_NAME),)
101$(error BOARD_KERNEL_IMAGE_NAME not defined.)
Michael Bestas8d6c4372016-08-26 01:12:08 +0300[diff] [blame]102endif
Dan Pasanen1d2cf732017-01-24 15:46:13 -0600[diff] [blame]103ifneq ($(TARGET_USES_UNCOMPRESSED_KERNEL),)
104$(error TARGET_USES_UNCOMPRESSED_KERNEL is deprecated.)
105endif
106ifneq ($(TARGET_KERNEL_APPEND_DTB),)
107$(error TARGET_KERNEL_APPEND_DTB is deprecated.)
108endif
109TARGET_PREBUILT_INT_KERNEL := $(KERNEL_OUT)/arch/$(KERNEL_ARCH)/boot/$(BOARD_KERNEL_IMAGE_NAME)
Michael Bestas8d6c4372016-08-26 01:12:08 +0300[diff] [blame]110
111# Clear this first to prevent accidental poisoning from env
112MAKE_FLAGS :=
113
Ziyan0471ff42017-01-12 18:47:54 +0100[diff] [blame]114ifeq ($(KERNEL_ARCH),arm)
115 # Avoid "Unknown symbol _GLOBAL_OFFSET_TABLE_" errors
116 MAKE_FLAGS += CFLAGS_MODULE="-fno-pic"
117endif
118
Michael Bestas8d6c4372016-08-26 01:12:08 +0300[diff] [blame]119ifeq ($(KERNEL_ARCH),arm64)
120 # Avoid "unsupported RELA relocation: 311" errors (R_AARCH64_ADR_GOT_PAGE)
121 MAKE_FLAGS += CFLAGS_MODULE="-fno-pic"
122 ifeq ($(TARGET_ARCH),arm)
123 KERNEL_CONFIG_OVERRIDE := CONFIG_ANDROID_BINDER_IPC_32BIT=y
124 endif
125endif
126
127ifneq ($(TARGET_KERNEL_ADDITIONAL_CONFIG),)
128KERNEL_ADDITIONAL_CONFIG := $(TARGET_KERNEL_ADDITIONAL_CONFIG)
129KERNEL_ADDITIONAL_CONFIG_SRC := $(KERNEL_SRC)/arch/$(KERNEL_ARCH)/configs/$(KERNEL_ADDITIONAL_CONFIG)
130 ifeq ("$(wildcard $(KERNEL_ADDITIONAL_CONFIG_SRC))","")
131 $(warning TARGET_KERNEL_ADDITIONAL_CONFIG '$(TARGET_KERNEL_ADDITIONAL_CONFIG)' doesn't exist)
132 KERNEL_ADDITIONAL_CONFIG_SRC := /dev/null
133 endif
134else
135 KERNEL_ADDITIONAL_CONFIG_SRC := /dev/null
136endif
137
138## Do be discontinued in a future version. Notify builder about target
139## kernel format requirement
140ifeq ($(BOARD_KERNEL_IMAGE_NAME),)
141ifeq ($(BOARD_USES_UBOOT),true)
142 $(error "Please set BOARD_KERNEL_IMAGE_NAME to uImage")
143else ifeq ($(BOARD_USES_UNCOMPRESSED_BOOT),true)
144 $(error "Please set BOARD_KERNEL_IMAGE_NAME to Image")
145endif
146endif
147
148ifeq "$(wildcard $(KERNEL_SRC) )" ""
149 ifneq ($(TARGET_PREBUILT_KERNEL),)
150 HAS_PREBUILT_KERNEL := true
151 NEEDS_KERNEL_COPY := true
152 else
153 $(foreach cf,$(PRODUCT_COPY_FILES), \
154 $(eval _src := $(call word-colon,1,$(cf))) \
155 $(eval _dest := $(call word-colon,2,$(cf))) \
156 $(ifeq kernel,$(_dest), \
157 $(eval HAS_PREBUILT_KERNEL := true)))
158 endif
159
160 ifneq ($(HAS_PREBUILT_KERNEL),)
161 $(warning ***************************************************************)
162 $(warning * Using prebuilt kernel binary instead of source *)
163 $(warning * THIS IS DEPRECATED, AND WILL BE DISCONTINUED *)
164 $(warning * Please configure your device to download the kernel *)
165 $(warning * source repository to $(KERNEL_SRC))
166 $(warning * See http://wiki.cyanogenmod.org/w/Doc:_integrated_kernel_building)
167 $(warning * for more information *)
168 $(warning ***************************************************************)
169 FULL_KERNEL_BUILD := false
170 KERNEL_BIN := $(TARGET_PREBUILT_KERNEL)
171 else
172 $(warning ***************************************************************)
173 $(warning * *)
174 $(warning * No kernel source found, and no fallback prebuilt defined. *)
175 $(warning * Please make sure your device is properly configured to *)
176 $(warning * download the kernel repository to $(KERNEL_SRC))
177 $(warning * and add the TARGET_KERNEL_CONFIG variable to BoardConfig.mk *)
178 $(warning * *)
179 $(warning * As an alternative, define the TARGET_PREBUILT_KERNEL *)
180 $(warning * variable with the path to the prebuilt binary kernel image *)
181 $(warning * in your BoardConfig.mk file *)
182 $(warning * *)
183 $(warning ***************************************************************)
184 $(error "NO KERNEL")
185 endif
186else
187 NEEDS_KERNEL_COPY := true
188 ifeq ($(TARGET_KERNEL_CONFIG),)
189 $(warning **********************************************************)
190 $(warning * Kernel source found, but no configuration was defined *)
191 $(warning * Please add the TARGET_KERNEL_CONFIG variable to your *)
192 $(warning * BoardConfig.mk file *)
193 $(warning **********************************************************)
194 # $(error "NO KERNEL CONFIG")
195 else
196 #$(info Kernel source found, building it)
197 FULL_KERNEL_BUILD := true
198 KERNEL_BIN := $(TARGET_PREBUILT_INT_KERNEL)
199 endif
200endif
201
202ifeq ($(FULL_KERNEL_BUILD),true)
203
204KERNEL_HEADERS_INSTALL := $(KERNEL_OUT)/usr
205KERNEL_HEADERS_INSTALL_STAMP := $(KERNEL_OUT)/.headers_install_stamp
206
207ifeq ($(NEED_KERNEL_MODULE_ROOT),true)
208KERNEL_MODULES_INSTALL := root
209KERNEL_MODULES_OUT := $(TARGET_ROOT_OUT)/lib/modules
210else
211KERNEL_MODULES_INSTALL := system
212KERNEL_MODULES_OUT := $(TARGET_OUT)/lib/modules
213endif
214
215TARGET_KERNEL_CROSS_COMPILE_PREFIX := $(strip $(TARGET_KERNEL_CROSS_COMPILE_PREFIX))
216ifneq ($(TARGET_KERNEL_CROSS_COMPILE_PREFIX),)
217KERNEL_TOOLCHAIN_PREFIX ?= $(TARGET_KERNEL_CROSS_COMPILE_PREFIX)
Zhao Wei Liew9a175032016-11-10 20:02:58 +0800[diff] [blame]218else ifeq ($(KERNEL_ARCH),arm64)
Michael Bestas1b5a1d62016-09-28 20:16:25 +0300[diff] [blame]219KERNEL_TOOLCHAIN_PREFIX ?= aarch64-linux-androidkernel-
Zhao Wei Liew9a175032016-11-10 20:02:58 +0800[diff] [blame]220else ifeq ($(KERNEL_ARCH),arm)
Michael Bestas1b5a1d62016-09-28 20:16:25 +0300[diff] [blame]221KERNEL_TOOLCHAIN_PREFIX ?= arm-linux-androidkernel-
Zhao Wei Liew9a175032016-11-10 20:02:58 +0800[diff] [blame]222else ifeq ($(KERNEL_ARCH),x86)
Michael Bestas1b5a1d62016-09-28 20:16:25 +0300[diff] [blame]223KERNEL_TOOLCHAIN_PREFIX ?= x86_64-linux-androidkernel-
Michael Bestas8d6c4372016-08-26 01:12:08 +0300[diff] [blame]224endif
225
226ifeq ($(KERNEL_TOOLCHAIN),)
227KERNEL_TOOLCHAIN_PATH := $(KERNEL_TOOLCHAIN_PREFIX)
228else
229ifneq ($(KERNEL_TOOLCHAIN_PREFIX),)
230KERNEL_TOOLCHAIN_PATH := $(KERNEL_TOOLCHAIN)/$(KERNEL_TOOLCHAIN_PREFIX)
231endif
232endif
233
234ifneq ($(USE_CCACHE),)
235 # Detect if the system already has ccache installed to use instead of the prebuilt
236 ccache := $(shell which ccache)
237
238 ifeq ($(ccache),)
239 ccache := $(ANDROID_BUILD_TOP)/prebuilts/misc/$(HOST_PREBUILT_TAG)/ccache/ccache
240 # Check that the executable is here.
241 ccache := $(strip $(wildcard $(ccache)))
242 endif
243endif
244
245KERNEL_CROSS_COMPILE := CROSS_COMPILE="$(ccache) $(KERNEL_TOOLCHAIN_PATH)"
246ccache =
247
248define mv-modules
249 mdpath=`find $(KERNEL_MODULES_OUT) -type f -name modules.order`;\
250 if [ "$$mdpath" != "" ];then\
251 mpath=`dirname $$mdpath`;\
252 ko=`find $$mpath/kernel -type f -name *.ko`;\
253 for i in $$ko; do $(KERNEL_TOOLCHAIN_PATH)strip --strip-unneeded $$i;\
254 mv $$i $(KERNEL_MODULES_OUT)/; done;\
255 fi
256endef
257
258define clean-module-folder
259 mdpath=`find $(KERNEL_MODULES_OUT) -type f -name modules.order`;\
260 if [ "$$mdpath" != "" ];then\
261 mpath=`dirname $$mdpath`; rm -rf $$mpath;\
262 fi
263endef
264
265ifeq ($(HOST_OS),darwin)
Christopher N. Hessee9f77f62017-04-12 00:57:44 +0200[diff] [blame]266 MAKE_FLAGS += C_INCLUDE_PATH=$(ANDROID_BUILD_TOP)/external/elfutils/libelf:/usr/local/opt/openssl/include
Rashed Abdel-Tawab0d40c222017-03-16 14:37:07 -0400[diff] [blame]267 MAKE_FLAGS += LIBRARY_PATH=/usr/local/opt/openssl/lib
Michael Bestas8d6c4372016-08-26 01:12:08 +0300[diff] [blame]268endif
269
270ifeq ($(TARGET_KERNEL_MODULES),)
271 TARGET_KERNEL_MODULES := no-external-modules
272endif
273
274$(KERNEL_OUT_STAMP):
275 $(hide) mkdir -p $(KERNEL_OUT)
276 $(hide) rm -rf $(KERNEL_MODULES_OUT)
277 $(hide) mkdir -p $(KERNEL_MODULES_OUT)
278 $(hide) touch $@
279
280KERNEL_ADDITIONAL_CONFIG_OUT := $(KERNEL_OUT)/.additional_config
281
282.PHONY: force_additional_config
283$(KERNEL_ADDITIONAL_CONFIG_OUT): force_additional_config
284 $(hide) cmp -s $(KERNEL_ADDITIONAL_CONFIG_SRC) $@ || cp $(KERNEL_ADDITIONAL_CONFIG_SRC) $@;
285
286$(KERNEL_CONFIG): $(KERNEL_OUT_STAMP) $(KERNEL_DEFCONFIG_SRC) $(KERNEL_ADDITIONAL_CONFIG_OUT)
287 @echo "Building Kernel Config"
288 $(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) VARIANT_DEFCONFIG=$(VARIANT_DEFCONFIG) SELINUX_DEFCONFIG=$(SELINUX_DEFCONFIG) $(KERNEL_DEFCONFIG)
289 $(hide) if [ ! -z "$(KERNEL_CONFIG_OVERRIDE)" ]; then \
290 echo "Overriding kernel config with '$(KERNEL_CONFIG_OVERRIDE)'"; \
291 echo $(KERNEL_CONFIG_OVERRIDE) >> $(KERNEL_OUT)/.config; \
292 $(MAKE) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) oldconfig; fi
Sam Mortimer72e91752016-10-01 09:56:52 -0700[diff] [blame]293 # Create defconfig build artifact
294 $(hide) $(MAKE) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) savedefconfig
Michael Bestas8d6c4372016-08-26 01:12:08 +0300[diff] [blame]295 $(hide) if [ ! -z "$(KERNEL_ADDITIONAL_CONFIG)" ]; then \
296 echo "Using additional config '$(KERNEL_ADDITIONAL_CONFIG)'"; \
297 $(KERNEL_SRC)/scripts/kconfig/merge_config.sh -m -O $(KERNEL_OUT) $(KERNEL_OUT)/.config $(KERNEL_SRC)/arch/$(KERNEL_ARCH)/configs/$(KERNEL_ADDITIONAL_CONFIG); \
298 $(MAKE) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) KCONFIG_ALLCONFIG=$(KERNEL_OUT)/.config alldefconfig; fi
299
300TARGET_KERNEL_BINARIES: $(KERNEL_OUT_STAMP) $(KERNEL_CONFIG) $(KERNEL_HEADERS_INSTALL_STAMP)
301 @echo "Building Kernel"
Dan Pasanen1d2cf732017-01-24 15:46:13 -0600[diff] [blame]302 $(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(BOARD_KERNEL_IMAGE_NAME)
Michael Bestas8d6c4372016-08-26 01:12:08 +0300[diff] [blame]303 $(hide) if grep -q 'CONFIG_OF=y' $(KERNEL_CONFIG) ; \
304 then \
305 echo "Building DTBs" ; \
306 $(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) dtbs ; \
307 else \
308 echo "DTBs not enabled" ; \
309 fi ;
310 $(hide) if grep -q 'CONFIG_MODULES=y' $(KERNEL_CONFIG) ; \
311 then \
312 echo "Building Kernel Modules" ; \
313 $(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) modules && \
314 $(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) INSTALL_MOD_PATH=../../$(KERNEL_MODULES_INSTALL) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) modules_install && \
315 $(mv-modules) && \
316 $(clean-module-folder) ; \
317 else \
318 echo "Kernel Modules not enabled" ; \
319 fi ;
320
321
322$(TARGET_KERNEL_MODULES): TARGET_KERNEL_BINARIES
323
324$(TARGET_PREBUILT_INT_KERNEL): $(TARGET_KERNEL_MODULES)
Michael Bestas8d6c4372016-08-26 01:12:08 +0300[diff] [blame]325
326$(KERNEL_HEADERS_INSTALL_STAMP): $(KERNEL_OUT_STAMP) $(KERNEL_CONFIG)
327 @echo "Building Kernel Headers"
328 $(hide) if [ ! -z "$(KERNEL_HEADER_DEFCONFIG)" ]; then \
329 rm -f ../$(KERNEL_CONFIG); \
330 $(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_HEADER_ARCH) $(KERNEL_CROSS_COMPILE) VARIANT_DEFCONFIG=$(VARIANT_DEFCONFIG) SELINUX_DEFCONFIG=$(SELINUX_DEFCONFIG) $(KERNEL_HEADER_DEFCONFIG); \
331 $(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_HEADER_ARCH) $(KERNEL_CROSS_COMPILE) headers_install; fi
332 $(hide) if [ "$(KERNEL_HEADER_DEFCONFIG)" != "$(KERNEL_DEFCONFIG)" ]; then \
333 echo "Used a different defconfig for header generation"; \
334 rm -f ../$(KERNEL_CONFIG); \
335 $(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) VARIANT_DEFCONFIG=$(VARIANT_DEFCONFIG) SELINUX_DEFCONFIG=$(SELINUX_DEFCONFIG) $(KERNEL_DEFCONFIG); fi
336 $(hide) if [ ! -z "$(KERNEL_CONFIG_OVERRIDE)" ]; then \
337 echo "Overriding kernel config with '$(KERNEL_CONFIG_OVERRIDE)'"; \
338 echo $(KERNEL_CONFIG_OVERRIDE) >> $(KERNEL_OUT)/.config; \
339 $(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) oldconfig; fi
340 $(hide) if [ ! -z "$(KERNEL_ADDITIONAL_CONFIG)" ]; then \
341 echo "Using additional config '$(KERNEL_ADDITIONAL_CONFIG)'"; \
342 $(KERNEL_SRC)/scripts/kconfig/merge_config.sh -m -O $(KERNEL_OUT) $(KERNEL_OUT)/.config $(KERNEL_SRC)/arch/$(KERNEL_ARCH)/configs/$(KERNEL_ADDITIONAL_CONFIG); \
343 $(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) KCONFIG_ALLCONFIG=$(KERNEL_OUT)/.config alldefconfig; fi
344 $(hide) touch $@
345
346# provide this rule because there are dependencies on this throughout the repo
347$(KERNEL_HEADERS_INSTALL): $(KERNEL_HEADERS_INSTALL_STAMP)
348
349kerneltags: $(KERNEL_OUT_STAMP) $(KERNEL_CONFIG)
350 $(MAKE) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) tags
351
352kernelconfig: KERNELCONFIG_MODE := menuconfig
353kernelxconfig: KERNELCONFIG_MODE := xconfig
354kernelxconfig kernelconfig: $(KERNEL_OUT_STAMP)
355 $(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_DEFCONFIG)
356 env KCONFIG_NOTIMESTAMP=true \
357 $(MAKE) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNELCONFIG_MODE)
358 env KCONFIG_NOTIMESTAMP=true \
359 $(MAKE) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) savedefconfig
360 cp $(KERNEL_OUT)/defconfig $(KERNEL_DEFCONFIG_SRC)
361
Michael Bestasd8237432017-07-12 20:56:35 +0300[diff] [blame]362kernelsavedefconfig: $(KERNEL_OUT_STAMP)
363 $(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_DEFCONFIG)
364 env KCONFIG_NOTIMESTAMP=true \
365 $(MAKE) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) savedefconfig
366 cp $(KERNEL_OUT)/defconfig $(KERNEL_DEFCONFIG_SRC)
367
Michael Bestas8d6c4372016-08-26 01:12:08 +0300[diff] [blame]368alldefconfig: $(KERNEL_OUT_STAMP)
369 env KCONFIG_NOTIMESTAMP=true \
370 $(MAKE) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) alldefconfig
371
372endif # FULL_KERNEL_BUILD
373
374## Install it
375
376ifeq ($(NEEDS_KERNEL_COPY),true)
377file := $(INSTALLED_KERNEL_TARGET)
378ALL_PREBUILT += $(file)
379$(file) : $(KERNEL_BIN) | $(ACP)
380 $(transform-prebuilt-to-target)
381
382ALL_PREBUILT += $(INSTALLED_KERNEL_TARGET)
383endif
384
385.PHONY: kernel
386kernel: $(INSTALLED_KERNEL_TARGET)