Root/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
8ifeq ($(__target_inc),)
9  include $(INCLUDE_DIR)/target.mk
10endif
11
12ifeq ($(DUMP),1)
13  KERNEL?=<KERNEL>
14  BOARD?=<BOARD>
15  LINUX_VERSION?=<LINUX_VERSION>
16else
17  ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
18    export GCC_HONOUR_COPTS=s
19  endif
20
21  LINUX_KMOD_SUFFIX=ko
22
23  ifneq (,$(findstring uml,$(BOARD)))
24    KERNEL_CC?=$(HOSTCC)
25    KERNEL_CROSS?=
26  else
27    KERNEL_CC?=$(TARGET_CC)
28    KERNEL_CROSS?=$(TARGET_CROSS)
29  endif
30
31  ifeq ($(TARGET_BUILD),1)
32    PATCH_DIR ?= ./patches$(if $(wildcard ./patches-$(KERNEL_PATCHVER)),-$(KERNEL_PATCHVER))
33    FILES_DIR ?= $(foreach dir,$(wildcard ./files ./files-$(KERNEL_PATCHVER)),"$(dir)")
34  endif
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  LINUX_UNAME_VERSION:=$(if $(word 3,$(subst ., ,$(KERNEL_BASE))),$(KERNEL_BASE),$(KERNEL_BASE).0)
39  ifneq ($(findstring -rc,$(LINUX_VERSION)),)
40    LINUX_UNAME_VERSION:=$(LINUX_UNAME_VERSION)-$(strip $(lastword $(subst -, ,$(LINUX_VERSION))))
41  endif
42
43  MODULES_SUBDIR:=lib/modules/$(LINUX_UNAME_VERSION)
44  TARGET_MODULES_DIR := $(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
45
46  LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
47
48  LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.bz2
49  TESTING:=$(if $(findstring -rc,$(LINUX_VERSION)),/testing,)
50  ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE))$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),)
51    ifeq ($(word 1,$(subst ., ,$(KERNEL_BASE))),3)
52      LINUX_SITE:=@KERNEL/linux/kernel/v3.x$(TESTING)
53    else
54      LINUX_SITE:=@KERNEL/linux/kernel/v$(KERNEL)$(TESTING)
55    endif
56  endif
57
58  ifneq ($(TARGET_BUILD),1)
59    PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
60  endif
61endif
62
63ifneq (,$(findstring uml,$(BOARD)))
64  LINUX_KARCH=um
65else
66  ifeq (,$(LINUX_KARCH))
67    LINUX_KARCH=$(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))))))))))
68  endif
69endif
70
71
72define KernelPackage/Defaults
73  FILES:=
74  AUTOLOAD:=
75endef
76
77define ModuleAutoLoad
78    $(SH_FUNC) \
79    export modules=; \
80    add_module() { \
81        priority="$$$$$$$$1"; \
82        mods="$$$$$$$$2"; \
83        boot="$$$$$$$$3"; \
84        shift 3; \
85        mkdir -p $(2)/etc/modules.d; \
86        ( \
87            [ "$$$$$$$$boot" = "1" ] && { \
88                echo '# May be required for rootfs' ; \
89            } ; \
90            for mod in $$$$$$$$mods; do \
91                echo "$$$$$$$$mod"; \
92            done \
93        ) > $(2)/etc/modules.d/$$$$$$$$priority-$(1); \
94        modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$priority-$(1)"; \
95    }; \
96    $(3) \
97    if [ -n "$$$$$$$$modules" ]; then \
98        mkdir -p $(2)/etc/modules.d; \
99        mkdir -p $(2)/CONTROL; \
100        echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
101        echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
102        echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
103        echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
104        chmod 0755 $(2)/CONTROL/postinst; \
105    fi
106endef
107
108ifeq ($(DUMP)$(TARGET_BUILD),)
109  -include $(LINUX_DIR)/.config
110endif
111
112define KernelPackage/depends
113  $(STAMP_BUILT): $(LINUX_DIR)/.config
114  define KernelPackage/depends
115  endef
116endef
117
118define KernelPackage
119  NAME:=$(1)
120  $(eval $(call Package/Default))
121  $(eval $(call KernelPackage/Defaults))
122  $(eval $(call KernelPackage/$(1)))
123  $(eval $(call KernelPackage/$(1)/$(BOARD)))
124
125  define Package/kmod-$(1)
126    TITLE:=$(TITLE)
127    SECTION:=kernel
128    CATEGORY:=Kernel modules
129    DESCRIPTION:=$(DESCRIPTION)
130    EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(LINUX_RELEASE))
131    VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
132    $(call KernelPackage/$(1))
133    $(call KernelPackage/$(1)/$(BOARD))
134  endef
135
136  ifdef KernelPackage/$(1)/description
137    define Package/kmod-$(1)/description
138$(call KernelPackage/$(1)/description)
139    endef
140  endif
141
142  ifdef KernelPackage/$(1)/config
143    define Package/kmod-$(1)/config
144$(call KernelPackage/$(1)/config)
145    endef
146  endif
147
148  $(call KernelPackage/depends)
149
150  ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
151    ifneq ($(strip $(FILES)),)
152      define Package/kmod-$(1)/install
153          mkdir -p $$(1)/$(MODULES_SUBDIR)
154          $(CP) -L $$(FILES) $$(1)/$(MODULES_SUBDIR)/
155          $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
156          $(call KernelPackage/$(1)/install,$$(1))
157      endef
158    endif
159  $(if $(CONFIG_PACKAGE_kmod-$(1)),
160    else
161      compile: kmod-$(1)-unavailable
162      kmod-$(1)-unavailable:
163        @echo "WARNING: kmod-$(1) is not available in the kernel config"
164  )
165  endif
166  $$(eval $$(call BuildPackage,kmod-$(1)))
167
168  $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
169endef
170
171define AutoLoad
172  add_module "$(1)" "$(2)" "$(3)";
173endef
174
175version_field=$(if $(word $(1),$(2)),$(word $(1),$(2)),0)
176kernel_version_merge=$$(( ($(call version_field,1,$(1)) << 24) + ($(call version_field,2,$(1)) << 16) + ($(call version_field,3,$(1)) << 8) + $(call version_field,4,$(1)) ))
177
178ifdef DUMP
179  kernel_version_cmp=
180else
181  kernel_version_cmp=$(shell [ $(call kernel_version_merge,$(call split_version,$(2))) $(1) $(call kernel_version_merge,$(call split_version,$(3))) ] && echo 1 )
182endif
183
184CompareKernelPatchVer=$(if $(call kernel_version_cmp,-$(2),$(1),$(3)),1,0)
185
186kernel_patchver_gt=$(call kernel_version_cmp,-gt,$(KERNEL_PATCHVER),$(1))
187kernel_patchver_ge=$(call kernel_version_cmp,-ge,$(KERNEL_PATCHVER),$(1))
188kernel_patchver_eq=$(call kernel_version_cmp,-eq,$(KERNEL_PATCHVER),$(1))
189kernel_patchver_le=$(call kernel_version_cmp,-lt,$(KERNEL_PATCHVER),$(1))
190kernel_patchver_lt=$(call kernel_version_cmp,-le,$(KERNEL_PATCHVER),$(1))
191
192

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