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