7effca3832d66b82680cb4e652399ec7c3ceaf59
[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 ifeq ($(__target_inc),)
14 ifndef CHECK
15 include $(INCLUDE_DIR)/target.mk
16 endif
17 endif
18
19 ifeq ($(DUMP),1)
20 KERNEL?=<KERNEL>
21 BOARD?=<BOARD>
22 LINUX_VERSION?=<LINUX_VERSION>
23 LINUX_VERMAGIC?=<LINUX_VERMAGIC>
24 else
25 ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
26 export GCC_HONOUR_COPTS=s
27 endif
28
29 LINUX_KMOD_SUFFIX=ko
30
31 ifneq (,$(findstring uml,$(BOARD)))
32 KERNEL_CC?=$(HOSTCC)
33 KERNEL_CROSS?=
34 else
35 KERNEL_CC?=$(TARGET_CC)
36 KERNEL_CROSS?=$(TARGET_CROSS)
37 endif
38
39 ifeq ($(TARGET_BUILD),1)
40 PATCH_DIR ?= $(CURDIR)/patches$(if $(wildcard ./patches-$(KERNEL_PATCHVER)),-$(KERNEL_PATCHVER))
41 FILES_DIR ?= $(foreach dir,$(wildcard $(CURDIR)/files $(CURDIR)/files-$(KERNEL_PATCHVER)),"$(dir)")
42 endif
43 KERNEL_BUILD_DIR ?= $(BUILD_DIR)/linux-$(BOARD)$(if $(SUBTARGET),_$(SUBTARGET))
44 LINUX_DIR ?= $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
45 LINUX_UAPI_DIR=uapi/
46 LINUX_VERMAGIC:=$(strip $(shell cat $(LINUX_DIR)/.vermagic 2>/dev/null))
47 LINUX_VERMAGIC:=$(if $(LINUX_VERMAGIC),$(LINUX_VERMAGIC),unknown)
48
49 LINUX_UNAME_VERSION:=$(if $(word 3,$(subst ., ,$(KERNEL_BASE))),$(KERNEL_BASE),$(KERNEL_BASE).0)
50 ifneq ($(findstring -rc,$(LINUX_VERSION)),)
51 LINUX_UNAME_VERSION:=$(LINUX_UNAME_VERSION)-$(strip $(lastword $(subst -, ,$(LINUX_VERSION))))
52 endif
53
54 LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
55
56 LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.xz
57 TESTING:=$(if $(findstring -rc,$(LINUX_VERSION)),/testing,)
58 ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE))$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),)
59 LINUX_SITE:=@KERNEL/linux/kernel/v$(word 1,$(subst ., ,$(KERNEL_BASE))).x$(TESTING)
60 else
61 LINUX_UNAME_VERSION:=$(strip $(shell cat $(LINUX_DIR)/include/config/kernel.release))
62 endif
63
64 MODULES_SUBDIR:=lib/modules/$(LINUX_UNAME_VERSION)
65 TARGET_MODULES_DIR:=$(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
66
67 ifneq ($(TARGET_BUILD),1)
68 PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
69 endif
70 endif
71
72 ifneq (,$(findstring uml,$(BOARD)))
73 LINUX_KARCH=um
74 else ifneq (,$(findstring $(ARCH) , aarch64 aarch64_be ))
75 LINUX_KARCH := arm64
76 else ifneq (,$(findstring $(ARCH) , arceb ))
77 LINUX_KARCH := arc
78 else ifneq (,$(findstring $(ARCH) , armeb ))
79 LINUX_KARCH := arm
80 else ifneq (,$(findstring $(ARCH) , mipsel mips64 mips64el ))
81 LINUX_KARCH := mips
82 else ifneq (,$(findstring $(ARCH) , sh2 sh3 sh4 ))
83 LINUX_KARCH := sh
84 else ifneq (,$(findstring $(ARCH) , i386 x86_64 ))
85 LINUX_KARCH := x86
86 else
87 LINUX_KARCH := $(ARCH)
88 endif
89
90 define KernelPackage/Defaults
91 FILES:=
92 AUTOLOAD:=
93 PKGFLAGS+=nonshared
94 endef
95
96 define ModuleAutoLoad
97 $(SH_FUNC) \
98 export modules=; \
99 probe_module() { \
100 mods="$$$$$$$$1"; \
101 boot="$$$$$$$$2"; \
102 shift 2; \
103 for mod in $(sort $$$$$$$$mods); do \
104 mkdir -p $(2)/etc/modules.d; \
105 echo "$$$$$$$$mod" >> $(2)/etc/modules.d/$(1); \
106 done; \
107 if [ -e $(2)/etc/modules.d/$(1) ]; then \
108 if [ "$$$$$$$$boot" = "1" ]; then \
109 mkdir -p $(2)/etc/modules-boot.d; \
110 ln -s ../modules.d/$(1) $(2)/etc/modules-boot.d/; \
111 fi; \
112 modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$mods"; \
113 fi; \
114 }; \
115 add_module() { \
116 priority="$$$$$$$$1"; \
117 mods="$$$$$$$$2"; \
118 boot="$$$$$$$$3"; \
119 shift 3; \
120 for mod in $(sort $$$$$$$$mods); do \
121 mkdir -p $(2)/etc/modules.d; \
122 echo "$$$$$$$$mod" >> $(2)/etc/modules.d/$$$$$$$$priority-$(1); \
123 done; \
124 if [ -e $(2)/etc/modules.d/$$$$$$$$priority-$(1) ]; then \
125 if [ "$$$$$$$$boot" = "1" ]; then \
126 mkdir -p $(2)/etc/modules-boot.d; \
127 ln -s ../modules.d/$$$$$$$$priority-$(1) $(2)/etc/modules-boot.d/; \
128 fi; \
129 modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$priority-$(1)"; \
130 fi; \
131 }; \
132 $(3) \
133 if [ -n "$$$$$$$$modules" ]; then \
134 mkdir -p $(2)/etc/modules.d; \
135 mkdir -p $(2)/CONTROL; \
136 echo "#!/bin/sh" > $(2)/CONTROL/postinst-pkg; \
137 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst-pkg; \
138 echo ". /lib/functions.sh" >> $(2)/CONTROL/postinst-pkg; \
139 echo "insert_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst-pkg; \
140 chmod 0755 $(2)/CONTROL/postinst-pkg; \
141 fi
142 endef
143
144 ifeq ($(DUMP)$(TARGET_BUILD),)
145 -include $(LINUX_DIR)/.config
146 endif
147
148 define KernelPackage/depends
149 $(STAMP_BUILT): $(LINUX_DIR)/.config
150 define KernelPackage/depends
151 endef
152 endef
153
154 define KernelPackage
155 NAME:=$(1)
156 $(eval $(call Package/Default))
157 $(eval $(call KernelPackage/Defaults))
158 $(eval $(call KernelPackage/$(1)))
159 $(eval $(call KernelPackage/$(1)/$(BOARD)))
160 $(eval $(call KernelPackage/$(1)/$(BOARD)/$(if $(SUBTARGET),$(SUBTARGET),generic)))
161
162 define Package/kmod-$(1)
163 TITLE:=$(TITLE)
164 SECTION:=kernel
165 CATEGORY:=Kernel modules
166 DESCRIPTION:=$(DESCRIPTION)
167 EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(LINUX_RELEASE)-$(LINUX_VERMAGIC))
168 VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
169 PKGFLAGS:=$(PKGFLAGS)
170 $(call KernelPackage/$(1))
171 $(call KernelPackage/$(1)/$(BOARD))
172 $(call KernelPackage/$(1)/$(BOARD)/$(if $(SUBTARGET),$(SUBTARGET),generic))
173 endef
174
175 ifdef KernelPackage/$(1)/conffiles
176 define Package/kmod-$(1)/conffiles
177 $(call KernelPackage/$(1)/conffiles)
178 endef
179 endif
180
181 ifdef KernelPackage/$(1)/description
182 define Package/kmod-$(1)/description
183 $(call KernelPackage/$(1)/description)
184 endef
185 endif
186
187 ifdef KernelPackage/$(1)/config
188 define Package/kmod-$(1)/config
189 $(call KernelPackage/$(1)/config)
190 endef
191 endif
192
193 $(call KernelPackage/depends)
194
195 ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m y,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
196 ifneq ($(strip $(FILES)),)
197 define Package/kmod-$(1)/install
198 @for mod in $$(call version_filter,$$(FILES)); do \
199 if grep -q "$$$$$$$${mod##$(LINUX_DIR)/}" "$(LINUX_DIR)/modules.builtin"; then \
200 echo "NOTICE: module '$$$$$$$$mod' is built-in."; \
201 elif [ -e $$$$$$$$mod ]; then \
202 mkdir -p $$(1)/$(MODULES_SUBDIR) ; \
203 $(CP) -L $$$$$$$$mod $$(1)/$(MODULES_SUBDIR)/ ; \
204 else \
205 echo "ERROR: module '$$$$$$$$mod' is missing." >&2; \
206 exit 1; \
207 fi; \
208 done;
209 $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
210 $(call KernelPackage/$(1)/install,$$(1))
211 endef
212 endif
213 $(if $(CONFIG_PACKAGE_kmod-$(1)),
214 else
215 compile: $(1)-disabled
216 $(1)-disabled:
217 @echo "WARNING: kmod-$(1) is not available in the kernel config - generating empty package" >&2
218
219 define Package/kmod-$(1)/install
220 true
221 endef
222 )
223 endif
224 $$(eval $$(call BuildPackage,kmod-$(1)))
225
226 $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
227 endef
228
229 version_filter=$(if $(findstring @,$(1)),$(shell $(SCRIPT_DIR)/package-metadata.pl version_filter $(KERNEL_PATCHVER) $(1)),$(1))
230
231 define AutoLoad
232 add_module "$(1)" "$(call version_filter,$(2))" "$(3)";
233 endef
234
235 define AutoProbe
236 probe_module "$(call version_filter,$(1))" "$(2)";
237 endef
238
239 version_field=$(if $(word $(1),$(2)),$(word $(1),$(2)),0)
240 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)) ))
241
242 ifdef DUMP
243 kernel_version_cmp=
244 else
245 kernel_version_cmp=$(shell [ $(call kernel_version_merge,$(call split_version,$(2))) $(1) $(call kernel_version_merge,$(call split_version,$(3))) ] && echo 1 )
246 endif
247
248 CompareKernelPatchVer=$(if $(call kernel_version_cmp,-$(2),$(1),$(3)),1,0)
249
250 kernel_patchver_gt=$(call kernel_version_cmp,-gt,$(KERNEL_PATCHVER),$(1))
251 kernel_patchver_ge=$(call kernel_version_cmp,-ge,$(KERNEL_PATCHVER),$(1))
252 kernel_patchver_eq=$(call kernel_version_cmp,-eq,$(KERNEL_PATCHVER),$(1))
253 kernel_patchver_le=$(call kernel_version_cmp,-le,$(KERNEL_PATCHVER),$(1))
254 kernel_patchver_lt=$(call kernel_version_cmp,-lt,$(KERNEL_PATCHVER),$(1))
255