ramips: Add support for the 7Links PX-4885 wireless router.
[15.05/openwrt.git] / include / kernel.mk
1
2 # Copyright (C) 2006-2011 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   LINUX_VERMAGIC?=<LINUX_VERMAGIC>
17 else
18   ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
19     export GCC_HONOUR_COPTS=s
20   endif
21
22   LINUX_KMOD_SUFFIX=ko
23
24   ifneq (,$(findstring uml,$(BOARD)))
25     KERNEL_CC?=$(HOSTCC)
26     KERNEL_CROSS?=
27   else
28     KERNEL_CC?=$(TARGET_CC)
29     KERNEL_CROSS?=$(TARGET_CROSS)
30   endif
31
32   ifeq ($(TARGET_BUILD),1)
33     PATCH_DIR ?= ./patches$(if $(wildcard ./patches-$(KERNEL_PATCHVER)),-$(KERNEL_PATCHVER))
34     FILES_DIR ?= $(foreach dir,$(wildcard ./files ./files-$(KERNEL_PATCHVER)),"$(dir)")
35   endif
36   KERNEL_BUILD_DIR ?= $(BUILD_DIR)/linux-$(BOARD)$(if $(SUBTARGET),_$(SUBTARGET))
37   LINUX_DIR ?= $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
38   ifeq ($(strip $(call CompareKernelPatchVer,$(KERNEL_PATCHVER),ge,3.7.0)),1)
39     LINUX_UAPI_DIR=uapi/
40   endif
41   LINUX_VERMAGIC:=$(strip $(shell cat $(LINUX_DIR)/.vermagic 2>/dev/null))
42   LINUX_VERMAGIC:=$(if $(LINUX_VERMAGIC),$(LINUX_VERMAGIC),unknown)
43
44   LINUX_UNAME_VERSION:=$(if $(word 3,$(subst ., ,$(KERNEL_BASE))),$(KERNEL_BASE),$(KERNEL_BASE).0)
45   ifneq ($(findstring -rc,$(LINUX_VERSION)),)
46     LINUX_UNAME_VERSION:=$(LINUX_UNAME_VERSION)-$(strip $(lastword $(subst -, ,$(LINUX_VERSION))))
47   endif
48
49   MODULES_SUBDIR:=lib/modules/$(LINUX_UNAME_VERSION)
50   TARGET_MODULES_DIR := $(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
51
52   LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
53
54   LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.xz
55   TESTING:=$(if $(findstring -rc,$(LINUX_VERSION)),/testing,)
56   ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE))$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),)
57       LINUX_SITE:=@KERNEL/linux/kernel/v3.x$(TESTING)
58   endif
59
60   ifneq ($(TARGET_BUILD),1)
61     PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
62   endif
63 endif
64
65 ifneq (,$(findstring uml,$(BOARD)))
66   LINUX_KARCH=um
67 else
68   ifeq (,$(LINUX_KARCH))
69     LINUX_KARCH=$(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))))))))))
70   endif
71 endif
72
73
74 define KernelPackage/Defaults
75   FILES:=
76   AUTOLOAD:=
77 endef
78
79 define ModuleAutoLoad
80         $(SH_FUNC) \
81         export modules=; \
82         probe_module() { \
83                 mods="$$$$$$$$1"; \
84                 boot="$$$$$$$$2"; \
85                 shift 2; \
86                 for mod in $$$$$$$$mods; do \
87                         if [ -e $(2)/$(MODULES_SUBDIR)/$$$$$$$$mod.ko ]; then \
88                                 mkdir -p $(2)/etc/modules.d; \
89                                 echo "$$$$$$$$mod" >> $(2)/etc/modules.d/$(1); \
90                         fi; \
91                 done; \
92                 if [ -e $(2)/etc/modules.d/$(1) ]; then \
93                         if [ "$$$$$$$$boot" = "1" ]; then \
94                                 mkdir -p $(2)/etc/modules-boot.d; \
95                                 ln -s ../modules.d/$(1) $(2)/etc/modules-boot.d/; \
96                         fi; \
97                         modules="$$$$$$$${modules:+$$$$$$$$modules}"; \
98                 fi; \
99         }; \
100         add_module() { \
101                 priority="$$$$$$$$1"; \
102                 mods="$$$$$$$$2"; \
103                 boot="$$$$$$$$3"; \
104                 shift 3; \
105                 for mod in $$$$$$$$mods; do \
106                         if [ -e $(2)/$(MODULES_SUBDIR)/$$$$$$$$mod.ko ]; then \
107                                 mkdir -p $(2)/etc/modules.d; \
108                                 echo "$$$$$$$$mod" >> $(2)/etc/modules.d/$$$$$$$$priority-$(1); \
109                         fi; \
110                 done; \
111                 if [ -e $(2)/etc/modules.d/$$$$$$$$priority-$(1) ]; then \
112                         if [ "$$$$$$$$boot" = "1" ]; then \
113                                 mkdir -p $(2)/etc/modules-boot.d; \
114                                 ln -s ../modules.d/$$$$$$$$priority-$(1) $(2)/etc/modules-boot.d/; \
115                         fi; \
116                         modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$priority-$(1)"; \
117                 fi; \
118         }; \
119         $(3) \
120         if [ -n "$$$$$$$$modules" ]; then \
121                 mkdir -p $(2)/etc/modules.d; \
122                 mkdir -p $(2)/CONTROL; \
123                 echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
124                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
125                 echo ". /lib/functions.sh" >> $(2)/CONTROL/postinst; \
126                 echo "insert_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
127                 chmod 0755 $(2)/CONTROL/postinst; \
128         fi
129 endef
130
131 ifeq ($(DUMP)$(TARGET_BUILD),)
132   -include $(LINUX_DIR)/.config
133 endif
134
135 define KernelPackage/depends
136   $(STAMP_BUILT): $(LINUX_DIR)/.config
137   define KernelPackage/depends
138   endef
139 endef
140
141 define KernelPackage
142   NAME:=$(1)
143   $(eval $(call Package/Default))
144   $(eval $(call KernelPackage/Defaults))
145   $(eval $(call KernelPackage/$(1)))
146   $(eval $(call KernelPackage/$(1)/$(BOARD)))
147
148   define Package/kmod-$(1)
149     TITLE:=$(TITLE)
150     SECTION:=kernel
151     CATEGORY:=Kernel modules
152     DESCRIPTION:=$(DESCRIPTION)
153     EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(LINUX_RELEASE)-$(LINUX_VERMAGIC))
154     VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
155     $(call KernelPackage/$(1))
156     $(call KernelPackage/$(1)/$(BOARD))
157   endef
158
159   ifdef KernelPackage/$(1)/description
160     define Package/kmod-$(1)/description
161 $(call KernelPackage/$(1)/description)
162     endef
163   endif
164
165   ifdef KernelPackage/$(1)/config
166     define Package/kmod-$(1)/config
167 $(call KernelPackage/$(1)/config)
168     endef
169   endif
170
171   $(call KernelPackage/depends)
172
173   ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m y,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
174     ifneq ($(strip $(FILES)),)
175       define Package/kmod-$(1)/install
176                   @for mod in $$(FILES); do \
177                         if [ -e $$$$$$$$mod ]; then \
178                                 mkdir -p $$(1)/$(MODULES_SUBDIR) ; \
179                                 $(CP) -L $$$$$$$$mod $$(1)/$(MODULES_SUBDIR)/ ; \
180                         elif [ -e "$(LINUX_DIR)/modules.builtin" ]; then \
181                                 if grep -q "$$$$$$$${mod##$(LINUX_DIR)/}" "$(LINUX_DIR)/modules.builtin"; then \
182                                         echo "NOTICE: module '$$$$$$$$mod' is built-in."; \
183                                 else \
184                                         echo "ERROR: module '$$$$$$$$mod' is missing." >&2; \
185                                         exit 1; \
186                                 fi; \
187                         else \
188                                 echo "WARNING: module '$$$$$$$$mod' missing and modules.builtin not available, assuming built-in." >&2; \
189                         fi; \
190                   done;
191                   $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
192                   $(call KernelPackage/$(1)/install,$$(1))
193       endef
194     endif
195   $(if $(CONFIG_PACKAGE_kmod-$(1)),
196     else
197       compile: $(1)-disabled
198       $(1)-disabled:
199                 @echo "WARNING: kmod-$(1) is not available in the kernel config - generating empty package" >&2
200
201       define Package/kmod-$(1)/install
202                 true
203       endef
204   )
205   endif
206   $$(eval $$(call BuildPackage,kmod-$(1)))
207
208   $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
209 endef
210
211 define AutoLoad
212   add_module "$(1)" "$(2)" "$(3)";
213 endef
214
215 define AutoProbe
216   probe_module "$(1)" "$(2)";
217 endef
218
219 version_field=$(if $(word $(1),$(2)),$(word $(1),$(2)),0)
220 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)) ))
221
222 ifdef DUMP
223   kernel_version_cmp=
224 else
225   kernel_version_cmp=$(shell [ $(call kernel_version_merge,$(call split_version,$(2))) $(1) $(call kernel_version_merge,$(call split_version,$(3))) ] && echo 1 )
226 endif
227
228 CompareKernelPatchVer=$(if $(call kernel_version_cmp,-$(2),$(1),$(3)),1,0)
229
230 kernel_patchver_gt=$(call kernel_version_cmp,-gt,$(KERNEL_PATCHVER),$(1))
231 kernel_patchver_ge=$(call kernel_version_cmp,-ge,$(KERNEL_PATCHVER),$(1))
232 kernel_patchver_eq=$(call kernel_version_cmp,-eq,$(KERNEL_PATCHVER),$(1))
233 kernel_patchver_le=$(call kernel_version_cmp,-le,$(KERNEL_PATCHVER),$(1))
234 kernel_patchver_lt=$(call kernel_version_cmp,-lt,$(KERNEL_PATCHVER),$(1))
235