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# -*-makefile-*-
#
# Copyright (C) 2002-2009 by Pengutronix e.K., Hildesheim, Germany
# 2010 by Marc Kleine-Budde <mkl@pengutronix.de>
#
# See CREDITS for details about who has contributed to this project.
#
# For further information about the PTXdist project and license conditions
# see the README file.
#
#
# We provide this package
#
PACKAGES-$(PTXCONF_KERNEL) += kernel
#
# when using a production release,
# we use the precompiled kernel from /opt
#
ifdef PTXCONF_PROJECT_USE_PRODUCTION
KERNEL_BDIR := $(PTXDIST_BASE_PLATFORMDIR)/build-target
else
KERNEL_BDIR := $(BUILDDIR)
endif
#
# Paths and names
#
KERNEL := linux-$(KERNEL_VERSION)
KERNEL_MD5 := $(call remove_quotes,$(PTXCONF_KERNEL_MD5))
KERNEL_SUFFIX := tar.bz2
KERNEL_DIR := $(KERNEL_BDIR)/$(KERNEL)
KERNEL_CONFIG := $(call remove_quotes, $(PTXDIST_PLATFORMCONFIGDIR)/$(PTXCONF_KERNEL_CONFIG))
KERNEL_LICENSE := GPLv2
KERNEL_URL := $(call kernel-url, KERNEL)
KERNEL_SOURCE := $(SRCDIR)/$(KERNEL).$(KERNEL_SUFFIX)
# ----------------------------------------------------------------------------
# Prepare
# ----------------------------------------------------------------------------
KERNEL_PATH := PATH=$(CROSS_PATH)
KERNEL_ENV := KCONFIG_NOTIMESTAMP=1
KERNEL_MAKEVARS := \
$(PARALLELMFLAGS) \
HOSTCC=$(HOSTCC) \
ARCH=$(PTXCONF_KERNEL_ARCH_STRING) \
CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) \
\
INSTALL_MOD_PATH=$(KERNEL_PKGDIR) \
PTX_KERNEL_DIR=$(KERNEL_DIR) \
$(call remove_quotes,$(PTXCONF_KERNEL_EXTRA_MAKEVARS))
ifdef PTXCONF_KERNEL_MODULES_INSTALL
KERNEL_MAKEVARS += \
DEPMOD=$(PTXCONF_SYSROOT_CROSS)/sbin/$(PTXCONF_GNU_TARGET)-depmod
endif
#
# support the different kernel image formats
#
KERNEL_IMAGE := $(call remove_quotes, $(PTXCONF_KERNEL_IMAGE))
# these are sane default
KERNEL_IMAGE_PATH_y := $(KERNEL_DIR)/arch/$(PTXCONF_KERNEL_ARCH_STRING)/boot/$(KERNEL_IMAGE)
# vmlinux is special
KERNEL_IMAGE_PATH_$(PTXCONF_KERNEL_IMAGE_VMLINUX) := $(KERNEL_DIR)/vmlinux
# avr32 is also special
KERNEL_IMAGE_PATH_$(PTXCONF_ARCH_AVR32) := $(KERNEL_DIR)/arch/$(PTXCONF_KERNEL_ARCH_STRING)/boot/images/$(KERNEL_IMAGE)
ifndef PTXCONF_PROJECT_USE_PRODUCTION
ifdef PTXCONF_KERNEL
$(KERNEL_CONFIG):
@echo
@echo "*************************************************************************"
@echo "**** Please generate a kernelconfig with 'ptxdist menuconfig kernel' ****"
@echo "*************************************************************************"
@echo
@echo
@exit 1
endif
#
# when compiling the rootfs into the kernel, we just include an empty
# file for now. the rootfs isn't build yet.
#
KERNEL_INITRAMFS_SOURCE_$(PTXCONF_IMAGE_KERNEL_INITRAMFS) += $(STATEDIR)/empty.cpio
KERNEL_INITRAMFS_SOURCE_$(PTXCONF_KLIBC) += $(INITRAMFS_CONTROL)
$(STATEDIR)/kernel.prepare: $(KERNEL_CONFIG)
@$(call targetinfo)
@echo "Using kernel config file: $(<)"
@install -m 644 "$(<)" "$(KERNEL_DIR)/.config"
ifdef PTXCONF_KERNEL_IMAGE_SIMPLE
cp $(PTXCONF_KERNEL_IMAGE_SIMPLE_DTS) \
$(KERNEL_DIR)/arch/$(PTXCONF_KERNEL_ARCH_STRING)/boot/dts/$(PTXCONF_KERNEL_IMAGE_SIMPLE_TARGET).dts
endif
ifdef KERNEL_INITRAMFS_SOURCE_y
@touch "$(KERNEL_INITRAMFS_SOURCE_y)"
@sed -i -e 's,^CONFIG_INITRAMFS_SOURCE.*$$,CONFIG_INITRAMFS_SOURCE=\"$(KERNEL_INITRAMFS_SOURCE_y)\",g' \
"$(KERNEL_DIR)/.config"
endif
@$(call ptx/oldconfig, KERNEL)
@diff -q -I "# [^C]" "$(KERNEL_DIR)/.config" "$(<)" > /dev/null || cp "$(KERNEL_DIR)/.config" "$(<)"
#
# Don't keep the expanded path to INITRAMS_SOURCE in $(KERNEL_CONFIG),
# because it contains local workdir path which is not relevant to
# other developers.
#
ifdef KERNEL_INITRAMFS_SOURCE_y
@sed -i -e 's,^CONFIG_INITRAMFS_SOURCE.*$$,CONFIG_INITRAMFS_SOURCE=\"# Automatically set by PTXDist\",g' \
"$(<)"
endif
@$(call touch)
# ----------------------------------------------------------------------------
# tags
# ----------------------------------------------------------------------------
$(STATEDIR)/kernel.tags:
@$(call targetinfo)
cd $(KERNEL_DIR) && $(KERNEL_PATH) $(KERNEL_ENV) $(MAKE) \
$(KERNEL_MAKEVARS) TAGS cscope
# ----------------------------------------------------------------------------
# Compile
# ----------------------------------------------------------------------------
$(STATEDIR)/kernel.compile:
@$(call targetinfo)
@rm -f \
$(KERNEL_DIR)/usr/initramfs_data.cpio.* \
$(KERNEL_DIR)/usr/.initramfs_data.cpio.*
cd $(KERNEL_DIR) && $(KERNEL_PATH) $(KERNEL_ENV) $(MAKE) \
$(KERNEL_MAKEVARS) $(KERNEL_IMAGE) $(PTXCONF_KERNEL_MODULES_BUILD)
@$(call touch)
endif # !PTXCONF_PROJECT_USE_PRODUCTION
# ----------------------------------------------------------------------------
# Install
# ----------------------------------------------------------------------------
$(STATEDIR)/kernel.install:
@$(call targetinfo)
ifdef PTXCONF_KERNEL_MODULES_INSTALL
@rm -rf $(KERNEL_PKGDIR)
@cd $(KERNEL_DIR) && $(KERNEL_PATH) $(KERNEL_ENV) $(MAKE) \
$(KERNEL_MAKEVARS) modules_install
endif
ifdef PTXCONF_KERNEL_DTC
@install -m 755 "$(KERNEL_DIR)/scripts/dtc/dtc" "$(PTXCONF_SYSROOT_HOST)/bin/dtc"
endif
@$(call touch)
# ----------------------------------------------------------------------------
# Target-Install
# ----------------------------------------------------------------------------
$(STATEDIR)/kernel.targetinstall:
@$(call targetinfo)
# delete the kernel image, it might be out-of-date
@rm -f $(IMAGEDIR)/linuximage
ifneq ($(PTXCONF_KERNEL_INSTALL)$(PTXCONF_KERNEL_VMLINUX),)
@$(call install_init, kernel)
@$(call install_fixup, kernel, PRIORITY,optional)
@$(call install_fixup, kernel, SECTION,base)
@$(call install_fixup, kernel, AUTHOR,"Robert Schwebel <r.schwebel@pengutronix.de>")
@$(call install_fixup, kernel, DESCRIPTION,missing)
@$(call install_copy, kernel, 0, 0, 0755, /boot);
ifdef PTXCONF_KERNEL_INSTALL
@$(call install_copy, kernel, 0, 0, 0644, $(KERNEL_IMAGE_PATH_y), /boot/$(KERNEL_IMAGE), n)
endif
# install the ELF kernel image for debugging purpose
ifdef PTXCONF_KERNEL_VMLINUX
@$(call install_copy, kernel, 0, 0, 0644, $(KERNEL_DIR)/vmlinux, /boot/vmlinux, n)
endif
@$(call install_finish, kernel)
endif
@$(call touch)
# ----------------------------------------------------------------------------
# Target-Install-post
# ----------------------------------------------------------------------------
ifdef PTXCONF_IMAGE_KERNEL_INSTALL_EARLY
$(STATEDIR)/kernel.targetinstall.post: $(IMAGEDIR)/linuximage
ifdef PTXCONF_IMAGE_KERNEL_LZOP
$(STATEDIR)/kernel.targetinstall.post: $(IMAGEDIR)/linuximage.lzo
endif
endif
$(STATEDIR)/kernel.targetinstall.post:
@$(call targetinfo)
ifdef PTXCONF_KERNEL_MODULES_INSTALL
@$(call install_init, kernel-modules)
@$(call install_fixup, kernel-modules, PRIORITY,optional)
@$(call install_fixup, kernel-modules, SECTION,base)
@$(call install_fixup, kernel-modules, AUTHOR,"Robert Schwebel <r.schwebel@pengutronix.de>")
@$(call install_fixup, kernel-modules, DESCRIPTION,missing)
@cd $(KERNEL_PKGDIR) && \
find lib -type f | while read file; do \
$(call install_copy, kernel-modules, 0, 0, 0644, -, /$${file}, k) \
done
@$(call install_finish, kernel-modules)
endif
@$(call touch)
# ----------------------------------------------------------------------------
# Clean
# ----------------------------------------------------------------------------
ifndef PTXCONF_PROJECT_USE_PRODUCTION
$(STATEDIR)/kernel.clean:
@$(call targetinfo)
@$(call clean_pkg, KERNEL)
@if [ -L $(KERNEL_DIR) ]; then \
pushd $(KERNEL_DIR); \
quilt pop -af; \
rm -rf series patches .pc; \
$(KERNEL_PATH) $(KERNEL_ENV) $(MAKE) $(KERNEL_MAKEVARS) distclean; \
popd; \
fi
# ----------------------------------------------------------------------------
# oldconfig / menuconfig
# ----------------------------------------------------------------------------
kernel_oldconfig kernel_menuconfig: $(STATEDIR)/kernel.extract
@if [ -e $(KERNEL_CONFIG) ]; then \
cp $(KERNEL_CONFIG) $(KERNEL_DIR)/.config; \
fi
@cd $(KERNEL_DIR) && \
$(KERNEL_PATH) $(KERNEL_ENV) $(MAKE) $(KERNEL_MAKEVARS) $(subst kernel_,,$@)
@if cmp -s $(KERNEL_DIR)/.config $(KERNEL_CONFIG); then \
echo "kernel configuration unchanged"; \
else \
cp $(KERNEL_DIR)/.config $(KERNEL_CONFIG); \
fi
endif
# vim: syntax=make
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