major target cleanup. it is now possible to have subtargets that can override many...
[openwrt.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$(shell [ -d "./patches-$(KERNEL_PATCHVER)" ] && printf -- "-$(KERNEL_PATCHVER)" || true )
34   KERNEL_BUILD_DIR ?= $(BUILD_DIR_BASE)/linux-$(BOARD)$(if $(SUBTARGET),_$(SUBTARGET))$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
35   LINUX_DIR ?= $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
36
37   MODULES_SUBDIR:=lib/modules/$(LINUX_VERSION)
38   TARGET_MODULES_DIR := $(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
39
40   LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
41
42   LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.bz2
43   TESTING:=$(if $(findstring -rc,$(LINUX_VERSION)),/testing,)
44   LINUX_SITE:=@KERNEL/linux/kernel/v$(KERNEL)$(TESTING) \
45
46   PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
47 endif
48
49 ifneq (,$(findstring uml,$(BOARD)))
50   LINUX_KARCH:=um
51 else
52   LINUX_KARCH:=$(shell echo $(ARCH) | sed -e 's/i[3-9]86/i386/' \
53         -e 's/mipsel/mips/' \
54         -e 's/mipseb/mips/' \
55         -e 's/powerpc/ppc/' \
56         -e 's/sh[234]/sh/' \
57         -e 's/armeb/arm/' \
58   )
59 endif
60
61
62 define KernelPackage/Defaults
63   FILES:=
64   AUTOLOAD:=
65 endef
66
67 define ModuleAutoLoad
68         export modules=; \
69         add_module() { \
70                 mkdir -p $(2)/etc/modules.d; \
71                 ( \
72                         for mod in $$$$$$$$2; do \
73                                 getvar mod; \
74                         done \
75                 ) > $(2)/etc/modules.d/$$$$$$$$1-$(1); \
76                 modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$1-$(1)"; \
77         }; \
78         $(3) \
79         if [ -n "$$$$$$$$modules" ]; then \
80                 mkdir -p $(2)/etc/modules.d; \
81                 echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
82                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
83                 echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
84                 echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
85                 chmod 0755 $(2)/CONTROL/postinst; \
86         fi
87 endef
88  
89
90 define KernelPackage
91   NAME:=$(1)
92   $(eval $(call Package/Default))
93   $(eval $(call KernelPackage/Defaults))
94   $(eval $(call KernelPackage/$(1)))
95   $(eval $(call KernelPackage/$(1)/$(KERNEL)))
96   $(eval $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL)))
97
98   define Package/kmod-$(1)
99     TITLE:=$(TITLE)
100     SECTION:=kernel
101     CATEGORY:=Kernel modules
102     DESCRIPTION:=$(DESCRIPTION)
103     EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE))
104     VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(BOARD)-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
105     $(call KernelPackage/$(1))
106     $(call KernelPackage/$(1)/$(KERNEL))
107     $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL))
108   endef
109
110   ifdef KernelPackage/$(1)/description
111     define Package/kmod-$(1)/description
112 $(call KernelPackage/$(1)/description)
113     endef
114   endif
115
116   # check that all CONFIG_* symbols in $(KCONFIG) are set to 'm'
117   ifeq ($(filter-out m,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$(if $($(c)),$($(c)),n))),)
118     ifneq ($(strip $(FILES)),)
119       define Package/kmod-$(1)/install
120                   mkdir -p $$(1)/lib/modules/$(LINUX_VERSION)
121                   $(CP) -L $$(FILES) $$(1)/lib/modules/$(LINUX_VERSION)/
122                   $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
123                   $(call KernelPackage/$(1)/install,$$(1))
124       endef
125     endif
126   endif
127   $$(eval $$(call BuildPackage,kmod-$(1)))
128
129   $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
130 endef
131
132 define AutoLoad
133   add_module $(1) "$(2)";
134 endef
135