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   LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
  55
  56   LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.xz
  57   TESTING:=$(if $(findstring -rc,$(LINUX_VERSION)),/testing,)
  58   ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE))$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),)
  59       LINUX_SITE:=@KERNEL/linux/kernel/v$(word 1,$(subst ., ,$(KERNEL_BASE))).x$(TESTING)
  60   else
  61       LINUX_UNAME_VERSION:=$(strip $(shell cat $(LINUX_DIR)/include/config/kernel.release))
  62   endif
  63
  64   MODULES_SUBDIR:=lib/modules/$(LINUX_UNAME_VERSION)
  65   TARGET_MODULES_DIR:=$(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
  66
  67   ifneq ($(TARGET_BUILD),1)
  68     PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
  69   endif
  70 endif
  71
  72 ifneq (,$(findstring uml,$(BOARD)))
  73   LINUX_KARCH=um
  74 else ifneq (,$(findstring $(ARCH) , aarch64 aarch64_be ))
  75   LINUX_KARCH := arm64
  76 else ifneq (,$(findstring $(ARCH) , arceb ))
  77   LINUX_KARCH := arc
  78 else ifneq (,$(findstring $(ARCH) , armeb ))
  79   LINUX_KARCH := arm
  80 else ifneq (,$(findstring $(ARCH) , mipsel mips64 mips64el ))
  81   LINUX_KARCH := mips
  82 else ifneq (,$(findstring $(ARCH) , sh2 sh3 sh4 ))
  83   LINUX_KARCH := sh
  84 else ifneq (,$(findstring $(ARCH) , i386 x86_64 ))
  85   LINUX_KARCH := x86
  86 else
  87   LINUX_KARCH := $(ARCH)
  88 endif
  89
  90 KERNEL_MAKE = $(MAKE) $(KERNEL_MAKEOPTS)
  91
  92 KERNEL_MAKE_FLAGS := \
  93         HOSTCFLAGS="$(HOST_CFLAGS) -Wall -Wmissing-prototypes -Wstrict-prototypes" \
  94         CROSS_COMPILE="$(KERNEL_CROSS)" \
  95         ARCH="$(LINUX_KARCH)" \
  96         KBUILD_HAVE_NLS=no \
  97         KBUILD_BUILD_USER="$(call qstrip,$(CONFIG_KERNEL_BUILD_USER))" \
  98         KBUILD_BUILD_HOST="$(call qstrip,$(CONFIG_KERNEL_BUILD_DOMAIN))" \
  99         KBUILD_BUILD_TIMESTAMP="$(KBUILD_BUILD_TIMESTAMP)" \
 100         KBUILD_BUILD_VERSION="0" \
 101         HOST_LOADLIBES="-L$(STAGING_DIR_HOST)/lib" \
 102         CONFIG_SHELL="$(BASH)" \
 103         $(if $(findstring c,$(OPENWRT_VERBOSE)),V=1,V='') \
 104         $(if $(PKG_BUILD_ID),LDFLAGS_MODULE=--build-id=0x$(PKG_BUILD_ID)) \
 105         KERNELRELEASE=$(LINUX_VERSION) \
 106         cmd_syscalls=
 107
 108 ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE))$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),)
 109   KERNEL_MAKEOPTS += \
 110         KERNELRELEASE=$(LINUX_VERSION)
 111 endif
 112
 113 KERNEL_MAKEOPTS := -C $(LINUX_DIR) $(KERNEL_MAKE_FLAGS)
 114
 115 ifdef CONFIG_USE_SPARSE
 116   KERNEL_MAKEOPTS += C=1 CHECK=$(STAGING_DIR_HOST)/bin/sparse
 117 endif
 118
 119 define KernelPackage/Defaults
 120   FILES:=
 121   AUTOLOAD:=
 122   PKGFLAGS+=nonshared
 123 endef
 124
 125 define ModuleAutoLoad
 126         $(SH_FUNC) \
 127         export modules=; \
 128         probe_module() { \
 129                 local mods="$$$$$$$$1"; \
 130                 local boot="$$$$$$$$2"; \
 131                 local mod; \
 132                 shift 2; \
 133                 for mod in $$$$$$$$mods; do \
 134                         mkdir -p $(2)/etc/modules.d; \
 135                         echo "$$$$$$$$mod" >> $(2)/etc/modules.d/$(1); \
 136                 done; \
 137                 if [ -e $(2)/etc/modules.d/$(1) ]; then \
 138                         if [ "$$$$$$$$boot" = "1" -a ! -e $(2)/etc/modules-boot.d/$(1) ]; then \
 139                                 mkdir -p $(2)/etc/modules-boot.d; \
 140                                 ln -s ../modules.d/$(1) $(2)/etc/modules-boot.d/; \
 141                         fi; \
 142                         modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$mods"; \
 143                 fi; \
 144         }; \
 145         add_module() { \
 146                 local priority="$$$$$$$$1"; \
 147                 local mods="$$$$$$$$2"; \
 148                 local boot="$$$$$$$$3"; \
 149                 local mod; \
 150                 shift 3; \
 151                 for mod in $$$$$$$$mods; do \
 152                         mkdir -p $(2)/etc/modules.d; \
 153                         echo "$$$$$$$$mod" >> $(2)/etc/modules.d/$$$$$$$$priority-$(1); \
 154                 done; \
 155                 if [ -e $(2)/etc/modules.d/$$$$$$$$priority-$(1) ]; then \
 156                         if [ "$$$$$$$$boot" = "1" -a ! -e $(2)/etc/modules-boot.d/$$$$$$$$priority-$(1) ]; then \
 157                                 mkdir -p $(2)/etc/modules-boot.d; \
 158                                 ln -s ../modules.d/$$$$$$$$priority-$(1) $(2)/etc/modules-boot.d/; \
 159                         fi; \
 160                         modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$priority-$(1)"; \
 161                 fi; \
 162         }; \
 163         $(3) \
 164         if [ -n "$$$$$$$$modules" ]; then \
 165                 modules="$$$$$$$$(echo "$$$$$$$$modules" | tr ' ' '\n' | sort | uniq | paste -s -d' ' -)"; \
 166                 mkdir -p $(2)/etc/modules.d; \
 167                 mkdir -p $(2)/CONTROL; \
 168                 echo "#!/bin/sh" > $(2)/CONTROL/postinst-pkg; \
 169                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst-pkg; \
 170                 echo ". /lib/functions.sh" >> $(2)/CONTROL/postinst-pkg; \
 171                 echo "insert_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst-pkg; \
 172                 chmod 0755 $(2)/CONTROL/postinst-pkg; \
 173         fi
 174 endef
 175
 176 ifeq ($(DUMP)$(TARGET_BUILD),)
 177   -include $(LINUX_DIR)/.config
 178 endif
 179
 180 define KernelPackage/depends
 181   $(STAMP_BUILT): $(LINUX_DIR)/.config
 182   define KernelPackage/depends
 183   endef
 184 endef
 185
 186 define KernelPackage
 187   NAME:=$(1)
 188   $(eval $(call Package/Default))
 189   $(eval $(call KernelPackage/Defaults))
 190   $(eval $(call KernelPackage/$(1)))
 191   $(eval $(call KernelPackage/$(1)/$(BOARD)))
 192   $(eval $(call KernelPackage/$(1)/$(BOARD)/$(if $(SUBTARGET),$(SUBTARGET),generic)))
 193
 194   define Package/kmod-$(1)
 195     TITLE:=$(TITLE)
 196     SECTION:=kernel
 197     CATEGORY:=Kernel modules
 198     DESCRIPTION:=$(DESCRIPTION)
 199     EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(LINUX_RELEASE)-$(LINUX_VERMAGIC))
 200     VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
 201     PKGFLAGS:=$(PKGFLAGS)
 202     $(call KernelPackage/$(1))
 203     $(call KernelPackage/$(1)/$(BOARD))
 204     $(call KernelPackage/$(1)/$(BOARD)/$(if $(SUBTARGET),$(SUBTARGET),generic))
 205   endef
 206
 207   ifdef KernelPackage/$(1)/conffiles
 208     define Package/kmod-$(1)/conffiles
 209 $(call KernelPackage/$(1)/conffiles)
 210     endef
 211   endif
 212
 213   ifdef KernelPackage/$(1)/description
 214     define Package/kmod-$(1)/description
 215 $(call KernelPackage/$(1)/description)
 216     endef
 217   endif
 218
 219   ifdef KernelPackage/$(1)/config
 220     define Package/kmod-$(1)/config
 221 $(call KernelPackage/$(1)/config)
 222     endef
 223   endif
 224
 225   $(call KernelPackage/depends)
 226
 227   ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m y,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
 228     ifneq ($(strip $(FILES)),)
 229       define Package/kmod-$(1)/install
 230                   @for mod in $$(call version_filter,$$(FILES)); do \
 231                         if grep -q "$$$$$$$${mod##$(LINUX_DIR)/}" "$(LINUX_DIR)/modules.builtin"; then \
 232                                 echo "NOTICE: module '$$$$$$$$mod' is built-in."; \
 233                         elif [ -e $$$$$$$$mod ]; then \
 234                                 mkdir -p $$(1)/$(MODULES_SUBDIR) ; \
 235                                 $(CP) -L $$$$$$$$mod $$(1)/$(MODULES_SUBDIR)/ ; \
 236                         else \
 237                                 echo "ERROR: module '$$$$$$$$mod' is missing." >&2; \
 238                                 exit 1; \
 239                         fi; \
 240                   done;
 241                   $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
 242                   $(call KernelPackage/$(1)/install,$$(1))
 243       endef
 244     endif
 245   $(if $(CONFIG_PACKAGE_kmod-$(1)),
 246     else
 247       compile: $(1)-disabled
 248       $(1)-disabled:
 249                 @echo "WARNING: kmod-$(1) is not available in the kernel config - generating empty package" >&2
 250
 251       define Package/kmod-$(1)/install
 252                 true
 253       endef
 254   )
 255   endif
 256   $$(eval $$(call BuildPackage,kmod-$(1)))
 257
 258   $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
 259 endef
 260
 261 version_filter=$(if $(findstring @,$(1)),$(shell $(SCRIPT_DIR)/package-metadata.pl version_filter $(KERNEL_PATCHVER) $(1)),$(1))
 262
 263 define AutoLoad
 264   add_module "$(1)" "$(call version_filter,$(2))" "$(3)";
 265 endef
 266
 267 define AutoProbe
 268   probe_module "$(call version_filter,$(1))" "$(2)";
 269 endef
 270
 271 version_field=$(if $(word $(1),$(2)),$(word $(1),$(2)),0)
 272 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)) ))
 273
 274 ifdef DUMP
 275   kernel_version_cmp=
 276 else
 277   kernel_version_cmp=$(shell [ $(call kernel_version_merge,$(call split_version,$(2))) $(1) $(call kernel_version_merge,$(call split_version,$(3))) ] && echo 1 )
 278 endif
 279
 280 CompareKernelPatchVer=$(if $(call kernel_version_cmp,-$(2),$(1),$(3)),1,0)
 281
 282 kernel_patchver_gt=$(call kernel_version_cmp,-gt,$(KERNEL_PATCHVER),$(1))
 283 kernel_patchver_ge=$(call kernel_version_cmp,-ge,$(KERNEL_PATCHVER),$(1))
 284 kernel_patchver_eq=$(call kernel_version_cmp,-eq,$(KERNEL_PATCHVER),$(1))
 285 kernel_patchver_le=$(call kernel_version_cmp,-le,$(KERNEL_PATCHVER),$(1))
 286 kernel_patchver_lt=$(call kernel_version_cmp,-lt,$(KERNEL_PATCHVER),$(1))
 287