include/kernel.mk

   1 #
   2 # Copyright (C) 2006-2015 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 ifneq ($(filter check,$(MAKECMDGOALS)),)
   9 CHECK:=1
  10 DUMP:=1
  11 endif
  12
  13 ifeq ($(__target_inc),)
  14   ifndef CHECK
  15     include $(INCLUDE_DIR)/target.mk
  16   endif
  17 endif
  18
  19 ifeq ($(DUMP),1)
  20   KERNEL?=<KERNEL>
  21   BOARD?=<BOARD>
  22   LINUX_VERSION?=<LINUX_VERSION>
  23   LINUX_VERMAGIC?=<LINUX_VERMAGIC>
  24 else
  25   ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
  26     export GCC_HONOUR_COPTS=s
  27   endif
  28
  29   LINUX_KMOD_SUFFIX=ko
  30
  31   ifneq (,$(findstring uml,$(BOARD)))
  32     KERNEL_CC?=$(HOSTCC)
  33     KERNEL_CROSS?=
  34   else
  35     KERNEL_CC?=$(TARGET_CC)
  36     KERNEL_CROSS?=$(TARGET_CROSS)
  37   endif
  38
  39   ifeq ($(TARGET_BUILD),1)
  40     PATCH_DIR ?= $(CURDIR)/patches$(if $(wildcard ./patches-$(KERNEL_PATCHVER)),-$(KERNEL_PATCHVER))
  41     FILES_DIR ?= $(foreach dir,$(wildcard $(CURDIR)/files $(CURDIR)/files-$(KERNEL_PATCHVER)),"$(dir)")
  42   endif
  43   KERNEL_BUILD_DIR ?= $(BUILD_DIR)/linux-$(BOARD)$(if $(SUBTARGET),_$(SUBTARGET))
  44   LINUX_DIR ?= $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
  45   LINUX_UAPI_DIR=uapi/
  46   LINUX_VERMAGIC:=$(strip $(shell cat $(LINUX_DIR)/.vermagic 2>/dev/null))
  47   LINUX_VERMAGIC:=$(if $(LINUX_VERMAGIC),$(LINUX_VERMAGIC),unknown)
  48
  49   LINUX_UNAME_VERSION:=$(if $(word 3,$(subst ., ,$(KERNEL_BASE))),$(KERNEL_BASE),$(KERNEL_BASE).0)
  50   ifneq ($(findstring -rc,$(LINUX_VERSION)),)
  51     LINUX_UNAME_VERSION:=$(LINUX_UNAME_VERSION)-$(strip $(lastword $(subst -, ,$(LINUX_VERSION))))
  52   endif
  53
  54   MODULES_SUBDIR:=lib/modules/$(LINUX_UNAME_VERSION)-gnu
  55   TARGET_MODULES_DIR := $(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
  56
  57   LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
  58
  59   LINUX_SOURCE:=linux-libre-$(LINUX_VERSION)-gnu.tar.xz
  60   TESTING:=$(if $(findstring -rc,$(LINUX_VERSION)),/testing,)
  61   ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE))$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),)
  62       LINUX_SITE:=@KERNEL_LIBRE/$(LINUX_VERSION)-gnu$(TESTING)
  63   endif
  64
  65   ifneq ($(TARGET_BUILD),1)
  66     PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
  67   endif
  68 endif
  69
  70 ifneq (,$(findstring uml,$(BOARD)))
  71   LINUX_KARCH=um
  72 else ifneq (,$(findstring $(ARCH) , aarch64 aarch64_be ))
  73   LINUX_KARCH := arm64
  74 else ifneq (,$(findstring $(ARCH) , arceb ))
  75   LINUX_KARCH := arc
  76 else ifneq (,$(findstring $(ARCH) , armeb ))
  77   LINUX_KARCH := arm
  78 else ifneq (,$(findstring $(ARCH) , mipsel mips64 mips64el ))
  79   LINUX_KARCH := mips
  80 else ifneq (,$(findstring $(ARCH) , sh2 sh3 sh4 ))
  81   LINUX_KARCH := sh
  82 else ifneq (,$(findstring $(ARCH) , i386 x86_64 ))
  83   LINUX_KARCH := x86
  84 else
  85   LINUX_KARCH := $(ARCH)
  86 endif
  87
  88 define KernelPackage/Defaults
  89   FILES:=
  90   AUTOLOAD:=
  91   PKGFLAGS+=nonshared
  92 endef
  93
  94 define ModuleAutoLoad
  95         $(SH_FUNC) \
  96         export modules=; \
  97         probe_module() { \
  98                 mods="$$$$$$$$1"; \
  99                 boot="$$$$$$$$2"; \
 100                 shift 2; \
 101                 for mod in $(sort $$$$$$$$mods); do \
 102                         mkdir -p $(2)/etc/modules.d; \
 103                         echo "$$$$$$$$mod" >> $(2)/etc/modules.d/$(1); \
 104                 done; \
 105                 if [ -e $(2)/etc/modules.d/$(1) ]; then \
 106                         if [ "$$$$$$$$boot" = "1" ]; then \
 107                                 mkdir -p $(2)/etc/modules-boot.d; \
 108                                 ln -s ../modules.d/$(1) $(2)/etc/modules-boot.d/; \
 109                         fi; \
 110                         modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$mods"; \
 111                 fi; \
 112         }; \
 113         add_module() { \
 114                 priority="$$$$$$$$1"; \
 115                 mods="$$$$$$$$2"; \
 116                 boot="$$$$$$$$3"; \
 117                 shift 3; \
 118                 for mod in $(sort $$$$$$$$mods); do \
 119                         mkdir -p $(2)/etc/modules.d; \
 120                         echo "$$$$$$$$mod" >> $(2)/etc/modules.d/$$$$$$$$priority-$(1); \
 121                 done; \
 122                 if [ -e $(2)/etc/modules.d/$$$$$$$$priority-$(1) ]; then \
 123                         if [ "$$$$$$$$boot" = "1" ]; then \
 124                                 mkdir -p $(2)/etc/modules-boot.d; \
 125                                 ln -s ../modules.d/$$$$$$$$priority-$(1) $(2)/etc/modules-boot.d/; \
 126                         fi; \
 127                         modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$priority-$(1)"; \
 128                 fi; \
 129         }; \
 130         $(3) \
 131         if [ -n "$$$$$$$$modules" ]; then \
 132                 mkdir -p $(2)/etc/modules.d; \
 133                 mkdir -p $(2)/CONTROL; \
 134                 echo "#!/bin/sh" > $(2)/CONTROL/postinst-pkg; \
 135                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst-pkg; \
 136                 echo ". /lib/functions.sh" >> $(2)/CONTROL/postinst-pkg; \
 137                 echo "insert_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst-pkg; \
 138                 chmod 0755 $(2)/CONTROL/postinst-pkg; \
 139         fi
 140 endef
 141
 142 ifeq ($(DUMP)$(TARGET_BUILD),)
 143   -include $(LINUX_DIR)/.config
 144 endif
 145
 146 define KernelPackage/depends
 147   $(STAMP_BUILT): $(LINUX_DIR)/.config
 148   define KernelPackage/depends
 149   endef
 150 endef
 151
 152 define KernelPackage
 153   NAME:=$(1)
 154   $(eval $(call Package/Default))
 155   $(eval $(call KernelPackage/Defaults))
 156   $(eval $(call KernelPackage/$(1)))
 157   $(eval $(call KernelPackage/$(1)/$(BOARD)))
 158   $(eval $(call KernelPackage/$(1)/$(BOARD)/$(if $(SUBTARGET),$(SUBTARGET),generic)))
 159
 160   define Package/kmod-$(1)
 161     TITLE:=$(TITLE)
 162     SECTION:=kernel
 163     CATEGORY:=Kernel modules
 164     DESCRIPTION:=$(DESCRIPTION)
 165     EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(LINUX_RELEASE)-$(LINUX_VERMAGIC))
 166     VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
 167     PKGFLAGS:=$(PKGFLAGS)
 168     $(call KernelPackage/$(1))
 169     $(call KernelPackage/$(1)/$(BOARD))
 170     $(call KernelPackage/$(1)/$(BOARD)/$(if $(SUBTARGET),$(SUBTARGET),generic))
 171   endef
 172
 173   ifdef KernelPackage/$(1)/conffiles
 174     define Package/kmod-$(1)/conffiles
 175 $(call KernelPackage/$(1)/conffiles)
 176     endef
 177   endif
 178
 179   ifdef KernelPackage/$(1)/description
 180     define Package/kmod-$(1)/description
 181 $(call KernelPackage/$(1)/description)
 182     endef
 183   endif
 184
 185   ifdef KernelPackage/$(1)/config
 186     define Package/kmod-$(1)/config
 187 $(call KernelPackage/$(1)/config)
 188     endef
 189   endif
 190
 191   $(call KernelPackage/depends)
 192
 193   ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m y,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
 194     ifneq ($(strip $(FILES)),)
 195       define Package/kmod-$(1)/install
 196                   @for mod in $$(call version_filter,$$(FILES)); do \
 197                         if grep -q "$$$$$$$${mod##$(LINUX_DIR)/}" "$(LINUX_DIR)/modules.builtin"; then \
 198                                 echo "NOTICE: module '$$$$$$$$mod' is built-in."; \
 199                         elif [ -e $$$$$$$$mod ]; then \
 200                                 mkdir -p $$(1)/$(MODULES_SUBDIR) ; \
 201                                 $(CP) -L $$$$$$$$mod $$(1)/$(MODULES_SUBDIR)/ ; \
 202                         else \
 203                                 echo "ERROR: module '$$$$$$$$mod' is missing." >&2; \
 204                                 exit 1; \
 205                         fi; \
 206                   done;
 207                   $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
 208                   $(call KernelPackage/$(1)/install,$$(1))
 209       endef
 210     endif
 211   $(if $(CONFIG_PACKAGE_kmod-$(1)),
 212     else
 213       compile: $(1)-disabled
 214       $(1)-disabled:
 215                 @echo "WARNING: kmod-$(1) is not available in the kernel config - generating empty package" >&2
 216
 217       define Package/kmod-$(1)/install
 218                 true
 219       endef
 220   )
 221   endif
 222   $$(eval $$(call BuildPackage,kmod-$(1)))
 223
 224   $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
 225 endef
 226
 227 version_filter=$(if $(findstring @,$(1)),$(shell $(SCRIPT_DIR)/package-metadata.pl version_filter $(KERNEL_PATCHVER) $(1)),$(1))
 228
 229 define AutoLoad
 230   add_module "$(1)" "$(call version_filter,$(2))" "$(3)";
 231 endef
 232
 233 define AutoProbe
 234   probe_module "$(call version_filter,$(1))" "$(2)";
 235 endef
 236
 237 version_field=$(if $(word $(1),$(2)),$(word $(1),$(2)),0)
 238 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)) ))
 239
 240 ifdef DUMP
 241   kernel_version_cmp=
 242 else
 243   kernel_version_cmp=$(shell [ $(call kernel_version_merge,$(call split_version,$(2))) $(1) $(call kernel_version_merge,$(call split_version,$(3))) ] && echo 1 )
 244 endif
 245
 246 CompareKernelPatchVer=$(if $(call kernel_version_cmp,-$(2),$(1),$(3)),1,0)
 247
 248 kernel_patchver_gt=$(call kernel_version_cmp,-gt,$(KERNEL_PATCHVER),$(1))
 249 kernel_patchver_ge=$(call kernel_version_cmp,-ge,$(KERNEL_PATCHVER),$(1))
 250 kernel_patchver_eq=$(call kernel_version_cmp,-eq,$(KERNEL_PATCHVER),$(1))
 251 kernel_patchver_le=$(call kernel_version_cmp,-le,$(KERNEL_PATCHVER),$(1))
 252 kernel_patchver_lt=$(call kernel_version_cmp,-lt,$(KERNEL_PATCHVER),$(1))
 253