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 else
  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
  61 endif
  62
  63 ifneq (,$(findstring uml,$(BOARD)))
  64   LINUX_KARCH=um
  65 else
  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
  69 endif
  70
  71
  72 define KernelPackage/Defaults
  73   FILES:=
  74   AUTOLOAD:=
  75 endef
  76
  77 define ModuleAutoLoad
  78         $(SH_FUNC) \
  79         export modules=; \
  80         add_module() { \
  81                 priority="$$$$$$$$1"; \
  82                 mods="$$$$$$$$2"; \
  83                 boot="$$$$$$$$3"; \
  84                 shift 3; \
  85                 for mod in $$$$$$$$mods; do \
  86                         if [ -e $(2)/$(MODULES_SUBDIR)/$$$$$$$$mod.ko ]; then \
  87                                 mkdir -p $(2)/etc/modules.d; \
  88                                 echo "$$$$$$$$mod" >> $(2)/etc/modules.d/$$$$$$$$priority-$(1); \
  89                         fi; \
  90                 done; \
  91                 if [ -e $(2)/etc/modules.d/$$$$$$$$priority-$(1) ]; then \
  92                         if [ "$$$$$$$$boot" = "1" ]; then \
  93                                 echo '# May be required for rootfs' >> $(2)/etc/modules.d/$$$$$$$$priority-$(1); \
  94                         fi; \
  95                         modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$priority-$(1)"; \
  96                 fi; \
  97         }; \
  98         $(3) \
  99         if [ -n "$$$$$$$$modules" ]; then \
 100                 mkdir -p $(2)/etc/modules.d; \
 101                 mkdir -p $(2)/CONTROL; \
 102                 echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
 103                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
 104                 echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
 105                 echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
 106                 chmod 0755 $(2)/CONTROL/postinst; \
 107         fi
 108 endef
 109
 110 ifeq ($(DUMP)$(TARGET_BUILD),)
 111   -include $(LINUX_DIR)/.config
 112 endif
 113
 114 define KernelPackage/depends
 115   $(STAMP_BUILT): $(LINUX_DIR)/.config
 116   define KernelPackage/depends
 117   endef
 118 endef
 119
 120 define KernelPackage
 121   NAME:=$(1)
 122   $(eval $(call Package/Default))
 123   $(eval $(call KernelPackage/Defaults))
 124   $(eval $(call KernelPackage/$(1)))
 125   $(eval $(call KernelPackage/$(1)/$(BOARD)))
 126
 127   define Package/kmod-$(1)
 128     TITLE:=$(TITLE)
 129     SECTION:=kernel
 130     CATEGORY:=Kernel modules
 131     DESCRIPTION:=$(DESCRIPTION)
 132     EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(LINUX_RELEASE))
 133     VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
 134     $(call KernelPackage/$(1))
 135     $(call KernelPackage/$(1)/$(BOARD))
 136   endef
 137
 138   ifdef KernelPackage/$(1)/description
 139     define Package/kmod-$(1)/description
 140 $(call KernelPackage/$(1)/description)
 141     endef
 142   endif
 143
 144   ifdef KernelPackage/$(1)/config
 145     define Package/kmod-$(1)/config
 146 $(call KernelPackage/$(1)/config)
 147     endef
 148   endif
 149
 150   $(call KernelPackage/depends)
 151
 152   ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m y,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
 153     ifneq ($(strip $(FILES)),)
 154       define Package/kmod-$(1)/install
 155                   @for mod in $$(FILES); do \
 156                         if [ -e $$$$$$$$mod ]; then \
 157                                 mkdir -p $$(1)/$(MODULES_SUBDIR) ; \
 158                                 $(CP) -L $$$$$$$$mod $$(1)/$(MODULES_SUBDIR)/ ; \
 159                         else \
 160                                 echo "WARNING: module '$$$$$$$$mod' does not exist, is it built-in?" ; \
 161                         fi; \
 162                   done;
 163                   $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
 164                   $(call KernelPackage/$(1)/install,$$(1))
 165       endef
 166     endif
 167   $(if $(CONFIG_PACKAGE_kmod-$(1)),
 168     else
 169       compile: kmod-$(1)-unavailable
 170       kmod-$(1)-unavailable:
 171                 @echo "WARNING: kmod-$(1) is not available in the kernel config"
 172   )
 173   endif
 174   $$(eval $$(call BuildPackage,kmod-$(1)))
 175
 176   $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
 177 endef
 178
 179 define AutoLoad
 180   add_module "$(1)" "$(2)" "$(3)";
 181 endef
 182
 183 version_field=$(if $(word $(1),$(2)),$(word $(1),$(2)),0)
 184 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)) ))
 185
 186 ifdef DUMP
 187   kernel_version_cmp=
 188 else
 189   kernel_version_cmp=$(shell [ $(call kernel_version_merge,$(call split_version,$(2))) $(1) $(call kernel_version_merge,$(call split_version,$(3))) ] && echo 1 )
 190 endif
 191
 192 CompareKernelPatchVer=$(if $(call kernel_version_cmp,-$(2),$(1),$(3)),1,0)
 193
 194 kernel_patchver_gt=$(call kernel_version_cmp,-gt,$(KERNEL_PATCHVER),$(1))
 195 kernel_patchver_ge=$(call kernel_version_cmp,-ge,$(KERNEL_PATCHVER),$(1))
 196 kernel_patchver_eq=$(call kernel_version_cmp,-eq,$(KERNEL_PATCHVER),$(1))
 197 kernel_patchver_le=$(call kernel_version_cmp,-le,$(KERNEL_PATCHVER),$(1))
 198 kernel_patchver_lt=$(call kernel_version_cmp,-lt,$(KERNEL_PATCHVER),$(1))
 199