kernel: update 4.9 to 4.9.51
[openwrt/openwrt.git] / include / kernel.mk
1 #
2 # Copyright (C) 2006-2015 OpenWrt.org
3 #
4 # This is free software, licensed under the GNU General Public License v2.
5 # See /LICENSE for more information.
6 #
7
8 ifneq ($(filter check,$(MAKECMDGOALS)),)
9 CHECK:=1
10 DUMP:=1
11 endif
12
13 ifneq ($(SOURCE_DATE_EPOCH),)
14 ifndef DUMP
15 KBUILD_BUILD_TIMESTAMP:=$(shell perl -e 'print scalar gmtime($(SOURCE_DATE_EPOCH))')
16 endif
17 endif
18
19 ifeq ($(__target_inc),)
20 ifndef CHECK
21 include $(INCLUDE_DIR)/target.mk
22 endif
23 endif
24
25 ifeq ($(DUMP),1)
26 KERNEL?=<KERNEL>
27 BOARD?=<BOARD>
28 LINUX_VERSION?=<LINUX_VERSION>
29 LINUX_VERMAGIC?=<LINUX_VERMAGIC>
30 else
31 ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
32 export GCC_HONOUR_COPTS=s
33 endif
34
35 LINUX_KMOD_SUFFIX=ko
36
37 ifneq (,$(findstring uml,$(BOARD)))
38 KERNEL_CC?=$(HOSTCC)
39 KERNEL_CROSS?=
40 else
41 KERNEL_CC?=$(TARGET_CC)
42 KERNEL_CROSS?=$(TARGET_CROSS)
43 endif
44
45 ifeq ($(TARGET_BUILD),1)
46 PATCH_DIR ?= $(CURDIR)/patches$(if $(wildcard ./patches-$(KERNEL_PATCHVER)),-$(KERNEL_PATCHVER))
47 FILES_DIR ?= $(foreach dir,$(wildcard $(CURDIR)/files $(CURDIR)/files-$(KERNEL_PATCHVER)),"$(dir)")
48 endif
49 KERNEL_BUILD_DIR ?= $(BUILD_DIR)/linux-$(BOARD)$(if $(SUBTARGET),_$(SUBTARGET))
50 LINUX_DIR ?= $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
51 LINUX_UAPI_DIR=uapi/
52 LINUX_VERMAGIC:=$(strip $(shell cat $(LINUX_DIR)/.vermagic 2>/dev/null))
53 LINUX_VERMAGIC:=$(if $(LINUX_VERMAGIC),$(LINUX_VERMAGIC),unknown)
54
55 LINUX_UNAME_VERSION:=$(if $(word 3,$(subst ., ,$(KERNEL_BASE))),$(KERNEL_BASE),$(KERNEL_BASE).0)
56 ifneq ($(findstring -rc,$(LINUX_VERSION)),)
57 LINUX_UNAME_VERSION:=$(LINUX_UNAME_VERSION)-$(strip $(lastword $(subst -, ,$(LINUX_VERSION))))
58 endif
59
60 LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
61
62 LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.xz
63 TESTING:=$(if $(findstring -rc,$(LINUX_VERSION)),/testing,)
64 ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE))$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),)
65 LINUX_SITE:=@KERNEL/linux/kernel/v$(word 1,$(subst ., ,$(KERNEL_BASE))).x$(TESTING)
66 else
67 LINUX_UNAME_VERSION:=$(strip $(shell cat $(LINUX_DIR)/include/config/kernel.release))
68 endif
69
70 MODULES_SUBDIR:=lib/modules/$(LINUX_UNAME_VERSION)
71 TARGET_MODULES_DIR:=$(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
72
73 ifneq ($(TARGET_BUILD),1)
74 PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
75 endif
76 endif
77
78 ifneq (,$(findstring uml,$(BOARD)))
79 LINUX_KARCH=um
80 else ifneq (,$(findstring $(ARCH) , aarch64 aarch64_be ))
81 LINUX_KARCH := arm64
82 else ifneq (,$(findstring $(ARCH) , arceb ))
83 LINUX_KARCH := arc
84 else ifneq (,$(findstring $(ARCH) , armeb ))
85 LINUX_KARCH := arm
86 else ifneq (,$(findstring $(ARCH) , mipsel mips64 mips64el ))
87 LINUX_KARCH := mips
88 else ifneq (,$(findstring $(ARCH) , sh2 sh3 sh4 ))
89 LINUX_KARCH := sh
90 else ifneq (,$(findstring $(ARCH) , i386 x86_64 ))
91 LINUX_KARCH := x86
92 else
93 LINUX_KARCH := $(ARCH)
94 endif
95
96 KERNEL_MAKE = $(MAKE) $(KERNEL_MAKEOPTS)
97
98 KERNEL_MAKE_FLAGS := \
99 HOSTCFLAGS="$(HOST_CFLAGS) -Wall -Wmissing-prototypes -Wstrict-prototypes" \
100 CROSS_COMPILE="$(KERNEL_CROSS)" \
101 ARCH="$(LINUX_KARCH)" \
102 KBUILD_HAVE_NLS=no \
103 KBUILD_BUILD_USER="$(call qstrip,$(CONFIG_KERNEL_BUILD_USER))" \
104 KBUILD_BUILD_HOST="$(call qstrip,$(CONFIG_KERNEL_BUILD_DOMAIN))" \
105 KBUILD_BUILD_TIMESTAMP="$(KBUILD_BUILD_TIMESTAMP)" \
106 KBUILD_BUILD_VERSION="0" \
107 HOST_LOADLIBES="-L$(STAGING_DIR_HOST)/lib" \
108 CONFIG_SHELL="$(BASH)" \
109 $(if $(findstring c,$(OPENWRT_VERBOSE)),V=1,V='') \
110 $(if $(PKG_BUILD_ID),LDFLAGS_MODULE=--build-id=0x$(PKG_BUILD_ID)) \
111 cmd_syscalls=
112
113 ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE))$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),)
114 KERNEL_MAKE_FLAGS += \
115 KERNELRELEASE=$(LINUX_VERSION)
116 endif
117
118 KERNEL_MAKEOPTS := -C $(LINUX_DIR) $(KERNEL_MAKE_FLAGS)
119
120 ifdef CONFIG_USE_SPARSE
121 KERNEL_MAKEOPTS += C=1 CHECK=$(STAGING_DIR_HOST)/bin/sparse
122 endif
123
124 define KernelPackage/Defaults
125 FILES:=
126 AUTOLOAD:=
127 PKGFLAGS+=nonshared
128 endef
129
130 define ModuleAutoLoad
131 $(SH_FUNC) \
132 export modules=; \
133 probe_module() { \
134 local mods="$$$$$$$$1"; \
135 local boot="$$$$$$$$2"; \
136 local mod; \
137 shift 2; \
138 for mod in $$$$$$$$mods; do \
139 mkdir -p $(2)/etc/modules.d; \
140 echo "$$$$$$$$mod" >> $(2)/etc/modules.d/$(1); \
141 done; \
142 if [ -e $(2)/etc/modules.d/$(1) ]; then \
143 if [ "$$$$$$$$boot" = "1" -a ! -e $(2)/etc/modules-boot.d/$(1) ]; then \
144 mkdir -p $(2)/etc/modules-boot.d; \
145 ln -s ../modules.d/$(1) $(2)/etc/modules-boot.d/; \
146 fi; \
147 modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$mods"; \
148 fi; \
149 }; \
150 add_module() { \
151 local priority="$$$$$$$$1"; \
152 local mods="$$$$$$$$2"; \
153 local boot="$$$$$$$$3"; \
154 local mod; \
155 shift 3; \
156 for mod in $$$$$$$$mods; do \
157 mkdir -p $(2)/etc/modules.d; \
158 echo "$$$$$$$$mod" >> $(2)/etc/modules.d/$$$$$$$$priority-$(1); \
159 done; \
160 if [ -e $(2)/etc/modules.d/$$$$$$$$priority-$(1) ]; then \
161 if [ "$$$$$$$$boot" = "1" -a ! -e $(2)/etc/modules-boot.d/$$$$$$$$priority-$(1) ]; then \
162 mkdir -p $(2)/etc/modules-boot.d; \
163 ln -s ../modules.d/$$$$$$$$priority-$(1) $(2)/etc/modules-boot.d/; \
164 fi; \
165 modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$priority-$(1)"; \
166 fi; \
167 }; \
168 $(3) \
169 if [ -n "$$$$$$$$modules" ]; then \
170 modules="$$$$$$$$(echo "$$$$$$$$modules" | tr ' ' '\n' | sort | uniq | paste -s -d' ' -)"; \
171 mkdir -p $(2)/etc/modules.d; \
172 mkdir -p $(2)/CONTROL; \
173 echo "#!/bin/sh" > $(2)/CONTROL/postinst-pkg; \
174 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst-pkg; \
175 echo ". /lib/functions.sh" >> $(2)/CONTROL/postinst-pkg; \
176 echo "insert_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst-pkg; \
177 chmod 0755 $(2)/CONTROL/postinst-pkg; \
178 fi
179 endef
180
181 ifeq ($(DUMP)$(TARGET_BUILD),)
182 -include $(LINUX_DIR)/.config
183 endif
184
185 define KernelPackage/depends
186 $(STAMP_BUILT): $(LINUX_DIR)/.config
187 define KernelPackage/depends
188 endef
189 endef
190
191 define KernelPackage
192 NAME:=$(1)
193 $(eval $(call Package/Default))
194 $(eval $(call KernelPackage/Defaults))
195 $(eval $(call KernelPackage/$(1)))
196 $(eval $(call KernelPackage/$(1)/$(BOARD)))
197 $(eval $(call KernelPackage/$(1)/$(BOARD)/$(if $(SUBTARGET),$(SUBTARGET),generic)))
198
199 define Package/kmod-$(1)
200 TITLE:=$(TITLE)
201 SECTION:=kernel
202 CATEGORY:=Kernel modules
203 DESCRIPTION:=$(DESCRIPTION)
204 EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(LINUX_RELEASE)-$(LINUX_VERMAGIC))
205 VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
206 PKGFLAGS:=$(PKGFLAGS)
207 $(call KernelPackage/$(1))
208 $(call KernelPackage/$(1)/$(BOARD))
209 $(call KernelPackage/$(1)/$(BOARD)/$(if $(SUBTARGET),$(SUBTARGET),generic))
210 endef
211
212 ifdef KernelPackage/$(1)/conffiles
213 define Package/kmod-$(1)/conffiles
214 $(call KernelPackage/$(1)/conffiles)
215 endef
216 endif
217
218 ifdef KernelPackage/$(1)/description
219 define Package/kmod-$(1)/description
220 $(call KernelPackage/$(1)/description)
221 endef
222 endif
223
224 ifdef KernelPackage/$(1)/config
225 define Package/kmod-$(1)/config
226 $(call KernelPackage/$(1)/config)
227 endef
228 endif
229
230 $(call KernelPackage/depends)
231
232 ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m y,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
233 ifneq ($(strip $(FILES)),)
234 define Package/kmod-$(1)/install
235 @for mod in $$(call version_filter,$$(FILES)); do \
236 if grep -q "$$$$$$$${mod##$(LINUX_DIR)/}" "$(LINUX_DIR)/modules.builtin"; then \
237 echo "NOTICE: module '$$$$$$$$mod' is built-in."; \
238 elif [ -e $$$$$$$$mod ]; then \
239 mkdir -p $$(1)/$(MODULES_SUBDIR) ; \
240 $(CP) -L $$$$$$$$mod $$(1)/$(MODULES_SUBDIR)/ ; \
241 else \
242 echo "ERROR: module '$$$$$$$$mod' is missing." >&2; \
243 exit 1; \
244 fi; \
245 done;
246 $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
247 $(call KernelPackage/$(1)/install,$$(1))
248 endef
249 endif
250 $(if $(CONFIG_PACKAGE_kmod-$(1)),
251 else
252 compile: $(1)-disabled
253 $(1)-disabled:
254 @echo "WARNING: kmod-$(1) is not available in the kernel config - generating empty package" >&2
255
256 define Package/kmod-$(1)/install
257 true
258 endef
259 )
260 endif
261 $$(eval $$(call BuildPackage,kmod-$(1)))
262
263 $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
264 endef
265
266 version_filter=$(if $(findstring @,$(1)),$(shell $(SCRIPT_DIR)/package-metadata.pl version_filter $(KERNEL_PATCHVER) $(1)),$(1))
267
268 define AutoLoad
269 add_module "$(1)" "$(call version_filter,$(2))" "$(3)";
270 endef
271
272 define AutoProbe
273 probe_module "$(call version_filter,$(1))" "$(2)";
274 endef
275
276 version_field=$(if $(word $(1),$(2)),$(word $(1),$(2)),0)
277 kernel_version_merge=$$(( ($(call version_field,1,$(1)) << 24) + ($(call version_field,2,$(1)) << 16) + ($(call version_field,3,$(1)) << 8) + $(call version_field,4,$(1)) ))
278
279 ifdef DUMP
280 kernel_version_cmp=
281 else
282 kernel_version_cmp=$(shell [ $(call kernel_version_merge,$(call split_version,$(2))) $(1) $(call kernel_version_merge,$(call split_version,$(3))) ] && echo 1 )
283 endif
284
285 CompareKernelPatchVer=$(if $(call kernel_version_cmp,-$(2),$(1),$(3)),1,0)
286
287 kernel_patchver_gt=$(call kernel_version_cmp,-gt,$(KERNEL_PATCHVER),$(1))
288 kernel_patchver_ge=$(call kernel_version_cmp,-ge,$(KERNEL_PATCHVER),$(1))
289 kernel_patchver_eq=$(call kernel_version_cmp,-eq,$(KERNEL_PATCHVER),$(1))
290 kernel_patchver_le=$(call kernel_version_cmp,-le,$(KERNEL_PATCHVER),$(1))
291 kernel_patchver_lt=$(call kernel_version_cmp,-lt,$(KERNEL_PATCHVER),$(1))
292