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 define KernelPackage/Defaults
  91   FILES:=
  92   AUTOLOAD:=
  93   PKGFLAGS+=nonshared
  94 endef
  95
  96 define ModuleAutoLoad
  97         $(SH_FUNC) \
  98         export modules=; \
  99         probe_module() { \
 100                 local mods="$$$$$$$$1"; \
 101                 local boot="$$$$$$$$2"; \
 102                 local mod; \
 103                 shift 2; \
 104                 for mod in $$$$$$$$mods; do \
 105                         mkdir -p $(2)/etc/modules.d; \
 106                         echo "$$$$$$$$mod" >> $(2)/etc/modules.d/$(1); \
 107                 done; \
 108                 if [ -e $(2)/etc/modules.d/$(1) ]; then \
 109                         if [ "$$$$$$$$boot" = "1" -a ! -e $(2)/etc/modules-boot.d/$(1) ]; then \
 110                                 mkdir -p $(2)/etc/modules-boot.d; \
 111                                 ln -s ../modules.d/$(1) $(2)/etc/modules-boot.d/; \
 112                         fi; \
 113                         modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$mods"; \
 114                 fi; \
 115         }; \
 116         add_module() { \
 117                 local priority="$$$$$$$$1"; \
 118                 local mods="$$$$$$$$2"; \
 119                 local boot="$$$$$$$$3"; \
 120                 local mod; \
 121                 shift 3; \
 122                 for mod in $$$$$$$$mods; do \
 123                         mkdir -p $(2)/etc/modules.d; \
 124                         echo "$$$$$$$$mod" >> $(2)/etc/modules.d/$$$$$$$$priority-$(1); \
 125                 done; \
 126                 if [ -e $(2)/etc/modules.d/$$$$$$$$priority-$(1) ]; then \
 127                         if [ "$$$$$$$$boot" = "1" -a ! -e $(2)/etc/modules-boot.d/$$$$$$$$priority-$(1) ]; then \
 128                                 mkdir -p $(2)/etc/modules-boot.d; \
 129                                 ln -s ../modules.d/$$$$$$$$priority-$(1) $(2)/etc/modules-boot.d/; \
 130                         fi; \
 131                         modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$priority-$(1)"; \
 132                 fi; \
 133         }; \
 134         $(3) \
 135         if [ -n "$$$$$$$$modules" ]; then \
 136                 modules="$$$$$$$$(echo "$$$$$$$$modules" | tr ' ' '\n' | sort | uniq | paste -s -d' ' -)"; \
 137                 mkdir -p $(2)/etc/modules.d; \
 138                 mkdir -p $(2)/CONTROL; \
 139                 echo "#!/bin/sh" > $(2)/CONTROL/postinst-pkg; \
 140                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst-pkg; \
 141                 echo ". /lib/functions.sh" >> $(2)/CONTROL/postinst-pkg; \
 142                 echo "insert_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst-pkg; \
 143                 chmod 0755 $(2)/CONTROL/postinst-pkg; \
 144         fi
 145 endef
 146
 147 ifeq ($(DUMP)$(TARGET_BUILD),)
 148   -include $(LINUX_DIR)/.config
 149 endif
 150
 151 define KernelPackage/depends
 152   $(STAMP_BUILT): $(LINUX_DIR)/.config
 153   define KernelPackage/depends
 154   endef
 155 endef
 156
 157 define KernelPackage
 158   NAME:=$(1)
 159   $(eval $(call Package/Default))
 160   $(eval $(call KernelPackage/Defaults))
 161   $(eval $(call KernelPackage/$(1)))
 162   $(eval $(call KernelPackage/$(1)/$(BOARD)))
 163   $(eval $(call KernelPackage/$(1)/$(BOARD)/$(if $(SUBTARGET),$(SUBTARGET),generic)))
 164
 165   define Package/kmod-$(1)
 166     TITLE:=$(TITLE)
 167     SECTION:=kernel
 168     CATEGORY:=Kernel modules
 169     DESCRIPTION:=$(DESCRIPTION)
 170     EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(LINUX_RELEASE)-$(LINUX_VERMAGIC))
 171     VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
 172     PKGFLAGS:=$(PKGFLAGS)
 173     $(call KernelPackage/$(1))
 174     $(call KernelPackage/$(1)/$(BOARD))
 175     $(call KernelPackage/$(1)/$(BOARD)/$(if $(SUBTARGET),$(SUBTARGET),generic))
 176   endef
 177
 178   ifdef KernelPackage/$(1)/conffiles
 179     define Package/kmod-$(1)/conffiles
 180 $(call KernelPackage/$(1)/conffiles)
 181     endef
 182   endif
 183
 184   ifdef KernelPackage/$(1)/description
 185     define Package/kmod-$(1)/description
 186 $(call KernelPackage/$(1)/description)
 187     endef
 188   endif
 189
 190   ifdef KernelPackage/$(1)/config
 191     define Package/kmod-$(1)/config
 192 $(call KernelPackage/$(1)/config)
 193     endef
 194   endif
 195
 196   $(call KernelPackage/depends)
 197
 198   ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m y,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
 199     ifneq ($(strip $(FILES)),)
 200       define Package/kmod-$(1)/install
 201                   @for mod in $$(call version_filter,$$(FILES)); do \
 202                         if grep -q "$$$$$$$${mod##$(LINUX_DIR)/}" "$(LINUX_DIR)/modules.builtin"; then \
 203                                 echo "NOTICE: module '$$$$$$$$mod' is built-in."; \
 204                         elif [ -e $$$$$$$$mod ]; then \
 205                                 mkdir -p $$(1)/$(MODULES_SUBDIR) ; \
 206                                 $(CP) -L $$$$$$$$mod $$(1)/$(MODULES_SUBDIR)/ ; \
 207                         else \
 208                                 echo "ERROR: module '$$$$$$$$mod' is missing." >&2; \
 209                                 exit 1; \
 210                         fi; \
 211                   done;
 212                   $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
 213                   $(call KernelPackage/$(1)/install,$$(1))
 214       endef
 215     endif
 216   $(if $(CONFIG_PACKAGE_kmod-$(1)),
 217     else
 218       compile: $(1)-disabled
 219       $(1)-disabled:
 220                 @echo "WARNING: kmod-$(1) is not available in the kernel config - generating empty package" >&2
 221
 222       define Package/kmod-$(1)/install
 223                 true
 224       endef
 225   )
 226   endif
 227   $$(eval $$(call BuildPackage,kmod-$(1)))
 228
 229   $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
 230 endef
 231
 232 version_filter=$(if $(findstring @,$(1)),$(shell $(SCRIPT_DIR)/package-metadata.pl version_filter $(KERNEL_PATCHVER) $(1)),$(1))
 233
 234 define AutoLoad
 235   add_module "$(1)" "$(call version_filter,$(2))" "$(3)";
 236 endef
 237
 238 define AutoProbe
 239   probe_module "$(call version_filter,$(1))" "$(2)";
 240 endef
 241
 242 version_field=$(if $(word $(1),$(2)),$(word $(1),$(2)),0)
 243 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)) ))
 244
 245 ifdef DUMP
 246   kernel_version_cmp=
 247 else
 248   kernel_version_cmp=$(shell [ $(call kernel_version_merge,$(call split_version,$(2))) $(1) $(call kernel_version_merge,$(call split_version,$(3))) ] && echo 1 )
 249 endif
 250
 251 CompareKernelPatchVer=$(if $(call kernel_version_cmp,-$(2),$(1),$(3)),1,0)
 252
 253 kernel_patchver_gt=$(call kernel_version_cmp,-gt,$(KERNEL_PATCHVER),$(1))
 254 kernel_patchver_ge=$(call kernel_version_cmp,-ge,$(KERNEL_PATCHVER),$(1))
 255 kernel_patchver_eq=$(call kernel_version_cmp,-eq,$(KERNEL_PATCHVER),$(1))
 256 kernel_patchver_le=$(call kernel_version_cmp,-le,$(KERNEL_PATCHVER),$(1))
 257 kernel_patchver_lt=$(call kernel_version_cmp,-lt,$(KERNEL_PATCHVER),$(1))
 258