openwrt/include/kernel.mk

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#
# Copyright (C) 2006 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
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ifeq ($(DUMP),1)
KERNEL:=<KERNEL>
BOARD:=<BOARD>
LINUX_VERSION:=<LINUX_VERSION>
else
include $(TOPDIR)/.kernel.mk
include $(INCLUDE_DIR)/target.mk
# check to see if .kernel.mk matches target.mk
ifeq ($(CONFIG_BOARD)-$(CONFIG_KERNEL),$(BOARD)-$(KERNEL))
LINUX_VERSION:=$(CONFIG_LINUX_VERSION)
LINUX_RELEASE:=$(CONFIG_LINUX_RELEASE)
LINUX_KARCH:=$(CONFIG_LINUX_KARCH)
else
# oops, old .kernel.config; rebuild it (hiding the misleading errors this produces)
$(warning rebuilding .kernel.mk)
$(TOPDIR)/.kernel.mk: FORCE
@$(MAKE) -C $(TOPDIR)/target/linux/$(BOARD)-$(KERNEL) $@ &>/dev/null
endif
ifeq ($(KERNEL),2.6)
LINUX_KMOD_SUFFIX=ko
else
LINUX_KMOD_SUFFIX=o
endif
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KERNELNAME=
ifneq (,$(findstring x86,$(BOARD)))
KERNELNAME="bzImage"
endif
ifneq (,$(findstring ppc,$(BOARD)))
KERNELNAME="uImage"
endif
ifneq (,$(findstring uml,$(BOARD)))
LINUX_KARCH:=um
KERNEL_CC:=$(HOSTCC)
KERNEL_CROSS:=
else
KERNEL_CC:=$(TARGET_CC)
KERNEL_CROSS:=$(TARGET_CROSS)
endif
KERNEL_BUILD_DIR:=$(BUILD_DIR)/linux-$(KERNEL)-$(BOARD)
LINUX_DIR := $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
MODULES_SUBDIR:=lib/modules/$(LINUX_VERSION)
MODULES_DIR := $(KERNEL_BUILD_DIR)/modules/$(MODULES_SUBDIR)
TARGET_MODULES_DIR := $(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
KMOD_BUILD_DIR := $(KERNEL_BUILD_DIR)/linux-modules
LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
endif
define KernelPackage/Defaults
FILES:=
KCONFIG:=m
AUTOLOAD:=
endef
define ModuleAutoLoad
export modules=; \
add_module() { \
mkdir -p $(2)/etc/modules.d; \
( \
for mod in $$$$$$$$2; do \
getvar mod; \
done \
) > $(2)/etc/modules.d/$$$$$$$$1-$(1); \
modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$1-$(1)"; \
}; \
$(3) \
if [ -n "$$$$$$$$modules" ]; then \
mkdir -p $(2)/etc/modules.d; \
echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
chmod 0755 $(2)/CONTROL/postinst; \
fi
endef
define KernelPackage
NAME:=$(1)
$(eval $(call KernelPackage/Defaults))
$(eval $(call KernelPackage/$(1)))
$(eval $(call KernelPackage/$(1)/$(KERNEL)))
$(eval $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL)))
define Package/kmod-$(1)
TITLE:=$(TITLE)
SECTION:=kernel
CATEGORY:=Kernel modules
DEFAULT:=m
DESCRIPTION:=$(DESCRIPTION)
EXTRA_DEPENDS:='kernel (=$(PKG_VERSION)-$(PKG_RELEASE))'
$(call KernelPackage/$(1))
$(call KernelPackage/$(1)/$(KERNEL))
$(call KernelPackage/$(1)/$(BOARD)-$(KERNEL))
endef
ifeq ($(findstring m,$(KCONFIG)),m)
ifneq ($(strip $(FILES)),)
define Package/kmod-$(1)/install
mkdir -p $$(1)/lib/modules/$(LINUX_VERSION)
$(CP) $$(FILES) $$(1)/lib/modules/$(LINUX_VERSION)/
$(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
$(call KernelPackage/$(1)/install,$$(1))
endef
endif
endif
$$(eval $$(call BuildPackage,kmod-$(1)))
endef
define AutoLoad
add_module $(1) "$(2)";
endef
# FIXME: remove this crap
define KMOD_template
ifeq ($$(strip $(4)),)
KDEPEND_$(1):=m
else
KDEPEND_$(1):=$($(4))
endif
IDEPEND_$(1):=kernel ($(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE)) $(foreach pkg,$(5),", $(pkg)")
PKG_$(1) := $(PACKAGE_DIR)/kmod-$(2)_$(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE)_$(ARCH).ipk
I_$(1) := $(KMOD_BUILD_DIR)/ipkg/$(2)
ifeq ($$(KDEPEND_$(1)),m)
ifneq ($$(CONFIG_PACKAGE_KMOD_$(1)),)
TARGETS += $$(PKG_$(1))
endif
ifeq ($$(CONFIG_PACKAGE_KMOD_$(1)),y)
INSTALL_TARGETS += $$(PKG_$(1))
endif
endif
$$(PKG_$(1)): $(LINUX_DIR)/.modules_done
rm -rf $$(I_$(1))
$(SCRIPT_DIR)/make-ipkg-dir.sh $$(I_$(1)) ../control/kmod-$(2).control $(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE) $(ARCH)
echo "Depends: $$(IDEPEND_$(1))" >> $$(I_$(1))/CONTROL/control
ifneq ($(strip $(3)),)
mkdir -p $$(I_$(1))/lib/modules/$(LINUX_VERSION)
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$(CP) $(3) $$(I_$(1))/lib/modules/$(LINUX_VERSION)
endif
ifneq ($(6),)
mkdir -p $$(I_$(1))/etc/modules.d
for module in $(7); do \
echo $$$$module >> $$(I_$(1))/etc/modules.d/$(6)-$(2); \
done
echo "#!/bin/sh" >> $$(I_$(1))/CONTROL/postinst
echo "[ -z \"\$$$$IPKG_INSTROOT\" ] || exit" >> $$(I_$(1))/CONTROL/postinst
echo ". /etc/functions.sh" >> $$(I_$(1))/CONTROL/postinst
echo "load_modules /etc/modules.d/$(6)-$(2)" >> $$(I_$(1))/CONTROL/postinst
chmod 0755 $$(I_$(1))/CONTROL/postinst
endif
$(8)
$(IPKG_BUILD) $$(I_$(1)) $(PACKAGE_DIR)
endef