239 lines
8.9 KiB
Makefile
239 lines
8.9 KiB
Makefile
###############################################################################
|
|
#
|
|
# Linux kernel target
|
|
#
|
|
###############################################################################
|
|
LINUX_VERSION=$(call qstrip,$(BR2_LINUX_KERNEL_VERSION))
|
|
|
|
# Compute LINUX_SOURCE and LINUX_SITE from the configuration
|
|
ifeq ($(LINUX_VERSION),custom)
|
|
LINUX_TARBALL = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION))
|
|
LINUX_SITE = $(dir $(LINUX_TARBALL))
|
|
LINUX_SOURCE = $(notdir $(LINUX_TARBALL))
|
|
else ifeq ($(BR2_LINUX_KERNEL_CUSTOM_GIT),y)
|
|
LINUX_SITE = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_GIT_REPO_URL))
|
|
LINUX_SITE_METHOD = git
|
|
else
|
|
LINUX_SOURCE = linux-$(LINUX_VERSION).tar.bz2
|
|
# In X.Y.Z, get X and Y. We replace dots and dashes by spaces in order
|
|
# to use the $(word) function. We support versions such as 3.1,
|
|
# 2.6.32, 2.6.32-rc1, 3.0-rc6, etc.
|
|
ifeq ($(findstring x2.6.,x$(LINUX_VERSION)),x2.6.)
|
|
LINUX_SITE = $(BR2_KERNEL_MIRROR)/linux/kernel/v2.6/
|
|
else
|
|
LINUX_SITE = $(BR2_KERNEL_MIRROR)/linux/kernel/v3.x/
|
|
endif
|
|
# release candidates are in testing/ subdir
|
|
ifneq ($(findstring -rc,$(LINUX_VERSION)),)
|
|
LINUX_SITE := $(LINUX_SITE)testing/
|
|
endif # -rc
|
|
endif
|
|
|
|
LINUX_PATCHES = $(call qstrip,$(BR2_LINUX_KERNEL_PATCH))
|
|
|
|
LINUX_INSTALL_IMAGES = YES
|
|
LINUX_DEPENDENCIES += host-module-init-tools
|
|
|
|
LINUX_MAKE_FLAGS = \
|
|
HOSTCC="$(HOSTCC)" \
|
|
HOSTCFLAGS="$(HOSTCFLAGS)" \
|
|
ARCH=$(KERNEL_ARCH) \
|
|
INSTALL_MOD_PATH=$(TARGET_DIR) \
|
|
CROSS_COMPILE="$(CCACHE) $(TARGET_CROSS)" \
|
|
DEPMOD=$(HOST_DIR)/usr/sbin/depmod
|
|
|
|
# Get the real Linux version, which tells us where kernel modules are
|
|
# going to be installed in the target filesystem.
|
|
LINUX_VERSION_PROBED = $(shell $(MAKE) $(LINUX_MAKE_FLAGS) -C $(LINUX_DIR) --no-print-directory -s kernelrelease)
|
|
|
|
ifeq ($(BR2_LINUX_KERNEL_IMAGE_TARGET_CUSTOM),y)
|
|
LINUX_IMAGE_NAME=$(call qstrip,$(BR2_LINUX_KERNEL_IMAGE_TARGET_NAME))
|
|
else
|
|
ifeq ($(BR2_LINUX_KERNEL_UIMAGE),y)
|
|
ifeq ($(KERNEL_ARCH),blackfin)
|
|
# a uImage, but with a different file name
|
|
LINUX_IMAGE_NAME=vmImage
|
|
else
|
|
LINUX_IMAGE_NAME=uImage
|
|
endif
|
|
LINUX_DEPENDENCIES+=host-uboot-tools
|
|
else ifeq ($(BR2_LINUX_KERNEL_BZIMAGE),y)
|
|
LINUX_IMAGE_NAME=bzImage
|
|
else ifeq ($(BR2_LINUX_KERNEL_ZIMAGE),y)
|
|
LINUX_IMAGE_NAME=zImage
|
|
else ifeq ($(BR2_LINUX_KERNEL_VMLINUX_BIN),y)
|
|
LINUX_IMAGE_NAME=vmlinux.bin
|
|
else ifeq ($(BR2_LINUX_KERNEL_VMLINUX),y)
|
|
LINUX_IMAGE_NAME=vmlinux
|
|
else ifeq ($(BR2_LINUX_KERNEL_VMLINUZ),y)
|
|
LINUX_IMAGE_NAME=vmlinuz
|
|
endif
|
|
endif
|
|
|
|
# Compute the arch path, since i386 and x86_64 are in arch/x86 and not
|
|
# in arch/$(KERNEL_ARCH). Even if the kernel creates symbolic links
|
|
# for bzImage, arch/i386 and arch/x86_64 do not exist when copying the
|
|
# defconfig file.
|
|
ifeq ($(KERNEL_ARCH),i386)
|
|
KERNEL_ARCH_PATH=$(LINUX_DIR)/arch/x86
|
|
else ifeq ($(KERNEL_ARCH),x86_64)
|
|
KERNEL_ARCH_PATH=$(LINUX_DIR)/arch/x86
|
|
else
|
|
KERNEL_ARCH_PATH=$(LINUX_DIR)/arch/$(KERNEL_ARCH)
|
|
endif
|
|
|
|
ifeq ($(BR2_LINUX_KERNEL_VMLINUX),y)
|
|
LINUX_IMAGE_PATH=$(LINUX_DIR)/$(LINUX_IMAGE_NAME)
|
|
else ifeq ($(BR2_LINUX_KERNEL_VMLINUZ),y)
|
|
LINUX_IMAGE_PATH=$(LINUX_DIR)/$(LINUX_IMAGE_NAME)
|
|
else
|
|
ifeq ($(KERNEL_ARCH),avr32)
|
|
LINUX_IMAGE_PATH=$(KERNEL_ARCH_PATH)/boot/images/$(LINUX_IMAGE_NAME)
|
|
else
|
|
LINUX_IMAGE_PATH=$(KERNEL_ARCH_PATH)/boot/$(LINUX_IMAGE_NAME)
|
|
endif
|
|
endif # BR2_LINUX_KERNEL_VMLINUX
|
|
|
|
define LINUX_DOWNLOAD_PATCHES
|
|
$(if $(LINUX_PATCHES),
|
|
@$(call MESSAGE,"Download additional patches"))
|
|
$(foreach patch,$(filter ftp://% http://%,$(LINUX_PATCHES)),\
|
|
$(call DOWNLOAD,$(dir $(patch)),$(notdir $(patch)))$(sep))
|
|
endef
|
|
|
|
LINUX_POST_DOWNLOAD_HOOKS += LINUX_DOWNLOAD_PATCHES
|
|
|
|
define LINUX_APPLY_PATCHES
|
|
for p in $(LINUX_PATCHES) ; do \
|
|
if echo $$p | grep -q -E "^ftp://|^http://" ; then \
|
|
support/scripts/apply-patches.sh $(@D) $(DL_DIR) `basename $$p` ; \
|
|
elif test -d $$p ; then \
|
|
support/scripts/apply-patches.sh $(@D) $$p linux-\*.patch ; \
|
|
else \
|
|
support/scripts/apply-patches.sh $(@D) `dirname $$p` `basename $$p` ; \
|
|
fi \
|
|
done
|
|
endef
|
|
|
|
LINUX_POST_PATCH_HOOKS += LINUX_APPLY_PATCHES
|
|
|
|
|
|
ifeq ($(BR2_LINUX_KERNEL_USE_DEFCONFIG),y)
|
|
KERNEL_SOURCE_CONFIG = $(KERNEL_ARCH_PATH)/configs/$(call qstrip,$(BR2_LINUX_KERNEL_DEFCONFIG))_defconfig
|
|
else ifeq ($(BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG),y)
|
|
KERNEL_SOURCE_CONFIG = $(BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE)
|
|
endif
|
|
|
|
define LINUX_CONFIGURE_CMDS
|
|
cp $(KERNEL_SOURCE_CONFIG) $(KERNEL_ARCH_PATH)/configs/buildroot_defconfig
|
|
$(TARGET_MAKE_ENV) $(MAKE1) $(LINUX_MAKE_FLAGS) -C $(@D) buildroot_defconfig
|
|
rm $(KERNEL_ARCH_PATH)/configs/buildroot_defconfig
|
|
$(if $(BR2_ARM_EABI),
|
|
$(call KCONFIG_ENABLE_OPT,CONFIG_AEABI,$(@D)/.config),
|
|
$(call KCONFIG_DISABLE_OPT,CONFIG_AEABI,$(@D)/.config))
|
|
# As the kernel gets compiled before root filesystems are
|
|
# built, we create a fake cpio file. It'll be
|
|
# replaced later by the real cpio archive, and the kernel will be
|
|
# rebuilt using the linux26-rebuild-with-initramfs target.
|
|
$(if $(BR2_TARGET_ROOTFS_INITRAMFS),
|
|
touch $(BINARIES_DIR)/rootfs.cpio
|
|
$(call KCONFIG_ENABLE_OPT,CONFIG_BLK_DEV_INITRD,$(@D)/.config)
|
|
$(call KCONFIG_SET_OPT,CONFIG_INITRAMFS_SOURCE,\"$(BINARIES_DIR)/rootfs.cpio\",$(@D)/.config)
|
|
$(call KCONFIG_SET_OPT,CONFIG_INITRAMFS_ROOT_UID,0,$(@D)/.config)
|
|
$(call KCONFIG_SET_OPT,CONFIG_INITRAMFS_ROOT_GID,0,$(@D)/.config)
|
|
$(call KCONFIG_DISABLE_OPT,CONFIG_INITRAMFS_COMPRESSION_NONE,$(@D)/.config)
|
|
$(call KCONFIG_ENABLE_OPT,CONFIG_INITRAMFS_COMPRESSION_GZIP,$(@D)/.config))
|
|
$(if $(BR2_ROOTFS_DEVICE_CREATION_STATIC),,
|
|
$(call KCONFIG_ENABLE_OPT,CONFIG_DEVTMPFS,$(@D)/.config)
|
|
$(call KCONFIG_ENABLE_OPT,CONFIG_DEVTMPFS_MOUNT,$(@D)/.config))
|
|
$(if $(BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_MDEV),
|
|
$(call KCONFIG_SET_OPT,CONFIG_UEVENT_HELPER_PATH,\"/sbin/mdev\",$(@D)/.config))
|
|
yes '' | $(TARGET_MAKE_ENV) $(MAKE1) $(LINUX_MAKE_FLAGS) -C $(@D) oldconfig
|
|
endef
|
|
|
|
# Compilation. We make sure the kernel gets rebuilt when the
|
|
# configuration has changed.
|
|
define LINUX_BUILD_CMDS
|
|
$(TARGET_MAKE_ENV) $(MAKE) $(LINUX_MAKE_FLAGS) -C $(@D) $(LINUX_IMAGE_NAME)
|
|
@if grep -q "CONFIG_MODULES=y" $(@D)/.config; then \
|
|
$(TARGET_MAKE_ENV) $(MAKE) $(LINUX_MAKE_FLAGS) -C $(@D) modules ; \
|
|
fi
|
|
endef
|
|
|
|
|
|
ifeq ($(BR2_LINUX_KERNEL_INSTALL_TARGET),y)
|
|
define LINUX_INSTALL_KERNEL_IMAGE_TO_TARGET
|
|
install -m 0644 -D $(LINUX_IMAGE_PATH) $(TARGET_DIR)/boot/$(LINUX_IMAGE_NAME)
|
|
endef
|
|
endif
|
|
|
|
define LINUX_INSTALL_IMAGES_CMDS
|
|
cp $(LINUX_IMAGE_PATH) $(BINARIES_DIR)
|
|
endef
|
|
|
|
define LINUX_INSTALL_TARGET_CMDS
|
|
$(LINUX_INSTALL_KERNEL_IMAGE_TO_TARGET)
|
|
# Install modules and remove symbolic links pointing to build
|
|
# directories, not relevant on the target
|
|
@if grep -q "CONFIG_MODULES=y" $(@D)/.config; then \
|
|
$(TARGET_MAKE_ENV) $(MAKE1) $(LINUX_MAKE_FLAGS) -C $(@D) \
|
|
DEPMOD="$(HOST_DIR)/usr/sbin/depmod" modules_install ; \
|
|
rm -f $(TARGET_DIR)/lib/modules/$(LINUX_VERSION_PROBED)/build ; \
|
|
rm -f $(TARGET_DIR)/lib/modules/$(LINUX_VERSION_PROBED)/source ; \
|
|
fi
|
|
endef
|
|
|
|
include linux/linux-ext-*.mk
|
|
|
|
$(eval $(call GENTARGETS))
|
|
|
|
linux-menuconfig linux-xconfig linux-gconfig linux-nconfig linux26-menuconfig linux26-xconfig linux26-gconfig linux26-nconfig: dirs $(LINUX_DIR)/.stamp_configured
|
|
$(MAKE) $(LINUX_MAKE_FLAGS) -C $(LINUX_DIR) \
|
|
$(subst linux-,,$(subst linux26-,,$@))
|
|
rm -f $(LINUX_DIR)/.stamp_{built,target_installed,images_installed}
|
|
|
|
linux-savedefconfig linux26-savedefconfig: dirs $(LINUX_DIR)/.stamp_configured
|
|
$(MAKE) $(LINUX_MAKE_FLAGS) -C $(LINUX_DIR) \
|
|
$(subst linux-,,$(subst linux26-,,$@))
|
|
|
|
ifeq ($(BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG),y)
|
|
linux-update-config linux26-update-config: $(LINUX_DIR)/.config
|
|
cp -f $(LINUX_DIR)/.config $(BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE)
|
|
|
|
linux-update-defconfig linux26-update-defconfig: linux-savedefconfig
|
|
cp -f $(LINUX_DIR)/defconfig $(BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE)
|
|
else
|
|
linux-update-config linux26-update-config: ;
|
|
linux-update-defconfig linux26-update-defconfig: ;
|
|
endif
|
|
|
|
# Support for rebuilding the kernel after the cpio archive has
|
|
# been generated in $(BINARIES_DIR)/rootfs.cpio.
|
|
$(LINUX_DIR)/.stamp_initramfs_rebuilt: $(LINUX_DIR)/.stamp_target_installed $(LINUX_DIR)/.stamp_images_installed $(BINARIES_DIR)/rootfs.cpio
|
|
@$(call MESSAGE,"Rebuilding kernel with initramfs")
|
|
# Build the kernel.
|
|
$(TARGET_MAKE_ENV) $(MAKE) $(LINUX_MAKE_FLAGS) -C $(@D) $(LINUX_IMAGE_NAME)
|
|
# Copy the kernel image to its final destination
|
|
cp $(LINUX_IMAGE_PATH) $(BINARIES_DIR)
|
|
$(Q)touch $@
|
|
|
|
# The initramfs building code must make sure this target gets called
|
|
# after it generated the initramfs list of files.
|
|
linux-rebuild-with-initramfs linux26-rebuild-with-initramfs: $(LINUX_DIR)/.stamp_initramfs_rebuilt
|
|
|
|
# Checks to give errors that the user can understand
|
|
ifeq ($(filter source,$(MAKECMDGOALS)),)
|
|
ifeq ($(BR2_LINUX_KERNEL_USE_DEFCONFIG),y)
|
|
ifeq ($(call qstrip,$(BR2_LINUX_KERNEL_DEFCONFIG)),)
|
|
$(error No kernel defconfig name specified, check your BR2_LINUX_KERNEL_DEFCONFIG setting)
|
|
endif
|
|
endif
|
|
|
|
ifeq ($(BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG),y)
|
|
ifeq ($(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE)),)
|
|
$(error No kernel configuration file specified, check your BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE setting)
|
|
endif
|
|
endif
|
|
|
|
endif
|