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[openwrt/svn-archive/archive.git] / include / kernel.mk
1 #
2 # Copyright (C) 2006 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 ifeq ($(__target_inc),)
9 include $(INCLUDE_DIR)/target.mk
10 endif
11
12 ifeq ($(DUMP),1)
13 KERNEL?=<KERNEL>
14 BOARD?=<BOARD>
15 LINUX_VERSION?=<LINUX_VERSION>
16 else
17 export GCC_HONOUR_COPTS=s
18
19 ifeq ($(KERNEL),2.6)
20 LINUX_KMOD_SUFFIX=ko
21 else
22 LINUX_KMOD_SUFFIX=o
23 endif
24
25 ifneq (,$(findstring uml,$(BOARD)))
26 KERNEL_CC?=$(HOSTCC)
27 KERNEL_CROSS?=
28 else
29 KERNEL_CC?=$(TARGET_CC)
30 KERNEL_CROSS?=$(TARGET_CROSS)
31 endif
32
33 PATCH_DIR ?= ./patches$(if $(wildcard ./patches-$(KERNEL_PATCHVER)),-$(KERNEL_PATCHVER))
34 FILES_DIR ?= $(foreach dir,$(wildcard ./files ./files-$(KERNEL_PATCHVER)),"$(dir)")
35 KERNEL_BUILD_DIR ?= $(BUILD_DIR_BASE)/linux-$(BOARD)$(if $(SUBTARGET),_$(SUBTARGET))$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
36 LINUX_DIR ?= $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
37
38 MODULES_SUBDIR:=lib/modules/$(LINUX_VERSION)
39 TARGET_MODULES_DIR := $(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
40
41 LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
42
43 LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.bz2
44 TESTING:=$(if $(findstring -rc,$(LINUX_VERSION)),/testing,)
45 ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE)),)
46 LINUX_SITE:=@KERNEL/linux/kernel/v$(KERNEL)$(TESTING)
47 endif
48
49 ifneq ($(TARGET_BUILD),1)
50 PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
51 endif
52 endif
53
54 ifneq (,$(findstring uml,$(BOARD)))
55 LINUX_KARCH=um
56 else
57 ifeq (,$(LINUX_KARCH))
58 LINUX_KARCH=$(strip $(subst i386,x86,$(subst armeb,arm,$(subst mipsel,mips,$(subst mips64,mips,$(subst mips64el,mips,$(subst sh2,sh,$(subst sh3,sh,$(subst sh4,sh,$(ARCH))))))))))
59 endif
60 endif
61
62
63 define KernelPackage/Defaults
64 FILES:=
65 AUTOLOAD:=
66 endef
67
68 define ModuleAutoLoad
69 export modules=; \
70 add_module() { \
71 mkdir -p $(2)/etc/modules.d; \
72 ( \
73 [ "$$$$$$$$3" = "1" ] && { \
74 echo '# May be required for rootfs' ; \
75 } ; \
76 for mod in $$$$$$$$2; do \
77 getvar mod; \
78 done \
79 ) > $(2)/etc/modules.d/$$$$$$$$1-$(1); \
80 modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$1-$(1)"; \
81 }; \
82 $(3) \
83 if [ -n "$$$$$$$$modules" ]; then \
84 mkdir -p $(2)/etc/modules.d; \
85 mkdir -p $(2)/CONTROL; \
86 echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
87 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
88 echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
89 echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
90 chmod 0755 $(2)/CONTROL/postinst; \
91 fi
92 endef
93
94 ifeq ($(DUMP)$(TARGET_BUILD),)
95 -include $(LINUX_DIR)/.config
96 endif
97
98 define KernelPackage/depends
99 $(STAMP_BUILT): $(LINUX_DIR)/.config
100 define KernelPackage/depends
101 endef
102 endef
103
104 define KernelPackage
105 NAME:=$(1)
106 $(eval $(call Package/Default))
107 $(eval $(call KernelPackage/Defaults))
108 $(eval $(call KernelPackage/$(1)))
109 $(eval $(call KernelPackage/$(1)/$(KERNEL)))
110 $(eval $(call KernelPackage/$(1)/$(BOARD)))
111
112 define Package/kmod-$(1)
113 TITLE:=$(TITLE)
114 SECTION:=kernel
115 CATEGORY:=Kernel modules
116 DESCRIPTION:=$(DESCRIPTION)
117 EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(LINUX_RELEASE))
118 VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
119 $(call KernelPackage/$(1))
120 $(call KernelPackage/$(1)/$(KERNEL))
121 $(call KernelPackage/$(1)/$(BOARD))
122 endef
123
124 ifdef KernelPackage/$(1)/description
125 define Package/kmod-$(1)/description
126 $(call KernelPackage/$(1)/description)
127 endef
128 endif
129
130 ifdef KernelPackage/$(1)/config
131 define Package/kmod-$(1)/config
132 $(call KernelPackage/$(1)/config)
133 endef
134 endif
135
136 $(call KernelPackage/depends)
137
138 ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
139 ifneq ($(strip $(FILES)),)
140 define Package/kmod-$(1)/install
141 mkdir -p $$(1)/lib/modules/$(LINUX_VERSION)
142 $(CP) -L $$(FILES) $$(1)/lib/modules/$(LINUX_VERSION)/
143 $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
144 $(call KernelPackage/$(1)/install,$$(1))
145 endef
146 endif
147 $(if $(CONFIG_PACKAGE_kmod-$(1)),
148 else
149 compile: kmod-$(1)-unavailable
150 kmod-$(1)-unavailable:
151 @echo "WARNING: kmod-$(1) is not available in the kernel config"
152 )
153 endif
154 $$(eval $$(call BuildPackage,kmod-$(1)))
155
156 $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
157 endef
158
159 define AutoLoad
160 add_module $(1) "$(2)" $(3);
161 endef
162
163 ifdef DUMP
164 CompareKernelPatchVer=0
165 else
166 define CompareKernelPatchVer
167 $(shell [ $$(echo $(1) | tr . 0) -$(2) $$(echo $(3) | tr . 0) ] && echo 1 || echo 0)
168 endef
169 endif
170