include/kernel-build.mk

   1 #
   2 # Copyright (C) 2006 OpenWrt.org
   3 #
   4 # This is free software, licensed under the GNU General Public License v2.
   5 # See /LICENSE for more information.
   6 #
   7 include $(INCLUDE_DIR)/host.mk
   8 -include $(INCLUDE_DIR)/modules-$(KERNEL).mk
   9
  10 LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.bz2
  11 LINUX_SITE=http://www.us.kernel.org/pub/linux/kernel/v$(KERNEL) \
  12            http://www.us.kernel.org/pub/linux/kernel/v$(KERNEL) \
  13            http://www.kernel.org/pub/linux/kernel/v$(KERNEL) \
  14            http://www.de.kernel.org/pub/linux/kernel/v$(KERNEL)
  15
  16 KERNEL_IDIR:=$(KERNEL_BUILD_DIR)/kernel-ipkg
  17 KERNEL_IPKG:=$(KERNEL_BUILD_DIR)/kernel_$(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE)_$(ARCH).ipk
  18 TARGETS += $(KERNEL_IPKG)
  19 INSTALL_TARGETS += $(KERNEL_IPKG)
  20
  21 ifneq (,$(findstring uml,$(BOARD)))
  22   LINUX_KARCH:=um
  23 else
  24   LINUX_KARCH:=$(shell echo $(ARCH) | sed -e 's/i[3-9]86/i386/' \
  25         -e 's/mipsel/mips/' \
  26         -e 's/mipseb/mips/' \
  27         -e 's/powerpc/ppc/' \
  28         -e 's/sh[234]/sh/' \
  29         -e 's/armeb/arm/' \
  30   )
  31 endif
  32
  33 KERNELNAME=
  34 ifneq (,$(findstring x86,$(BOARD)))
  35   KERNELNAME="bzImage"
  36 endif
  37 ifneq (,$(findstring ppc,$(BOARD)))
  38   KERNELNAME="uImage"
  39 endif
  40
  41
  42 $(TARGETS): $(PACKAGE_DIR)
  43
  44 $(PACKAGE_DIR):
  45         mkdir -p $@
  46
  47 $(DL_DIR)/$(LINUX_SOURCE):
  48         -mkdir -p $(DL_DIR)
  49         $(SCRIPT_DIR)/download.pl $(DL_DIR) $(LINUX_SOURCE) $(LINUX_KERNEL_MD5SUM) $(LINUX_SITE)
  50
  51 $(LINUX_DIR)/.unpacked: $(DL_DIR)/$(LINUX_SOURCE)
  52         -mkdir -p $(KERNEL_BUILD_DIR)
  53         bzcat $(DL_DIR)/$(LINUX_SOURCE) | tar -C $(KERNEL_BUILD_DIR) $(TAR_OPTIONS)
  54         touch $@
  55
  56 ifeq ($(KERNEL),2.4)
  57 $(LINUX_DIR)/.configured: $(LINUX_DIR)/.patched
  58         $(SED) "s,\-mcpu=,\-mtune=,g;" $(LINUX_DIR)/arch/mips/Makefile
  59         $(MAKE) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" CC="$(KERNEL_CC)" ARCH=$(LINUX_KARCH) oldconfig include/linux/compile.h include/linux/version.h
  60         touch $@
  61
  62 $(LINUX_DIR)/.depend_done: $(LINUX_DIR)/.configured
  63         $(MAKE) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" ARCH=$(LINUX_KARCH) dep
  64         touch $@
  65
  66 $(LINUX_DIR)/vmlinux: $(LINUX_DIR)/.depend_done
  67 else
  68 $(LINUX_DIR)/.configured: $(LINUX_DIR)/.patched
  69         $(MAKE) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" CC="$(KERNEL_CC)" ARCH=$(LINUX_KARCH) oldconfig prepare scripts
  70         touch $@
  71 endif
  72
  73 ramdisk-config: $(LINUX_DIR)/.configured FORCE
  74         mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
  75         grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
  76 ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y)
  77         echo 'CONFIG_INITRAMFS_SOURCE="../../root"' >> $(LINUX_DIR)/.config
  78         echo 'CONFIG_INITRAMFS_ROOT_UID=0' >> $(LINUX_DIR)/.config
  79         echo 'CONFIG_INITRAMFS_ROOT_GID=0' >> $(LINUX_DIR)/.config
  80         mkdir -p $(BUILD_DIR)/root/etc/init.d
  81         $(CP) ../generic-2.6/files/init $(BUILD_DIR)/root/
  82 else
  83         rm -f $(BUILD_DIR)/root/init $(BUILD_DIR)/root/etc/init.d/S00initramfs
  84         echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config
  85 endif
  86
  87 $(LINUX_DIR)/vmlinux: $(LINUX_DIR)/.linux-compile pkg-install ramdisk-config
  88         $(MAKE) -j$(CONFIG_JLEVEL) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" CC="$(KERNEL_CC)" ARCH=$(LINUX_KARCH) $(KERNELNAME)
  89
  90 $(LINUX_KERNEL): $(LINUX_DIR)/vmlinux
  91         $(KERNEL_CROSS)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S $< $@
  92         touch -c $(LINUX_KERNEL)
  93
  94 $(LINUX_DIR)/.modules_done:
  95         rm -rf $(KERNEL_BUILD_DIR)/modules
  96         $(MAKE) -j$(CONFIG_JLEVEL) -C "$(LINUX_DIR)" CROSS_COMPILE="$(KERNEL_CROSS)" CC="$(KERNEL_CC)" ARCH=$(LINUX_KARCH) modules
  97         $(MAKE) -C "$(LINUX_DIR)" CROSS_COMPILE="$(KERNEL_CROSS)" CC="$(KERNEL_CC)" ARCH=$(LINUX_KARCH) DEPMOD=true INSTALL_MOD_PATH=$(KERNEL_BUILD_DIR)/modules modules_install
  98         touch $(LINUX_DIR)/.modules_done
  99
 100 modules: $(LINUX_DIR)/.modules_done
 101 packages: $(TARGETS)
 102
 103 $(LINUX_DIR)/.linux-compile:
 104         @rm -f $(BUILD_DIR)/linux
 105         ln -sf $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION) $(BUILD_DIR)/linux
 106         @$(MAKE) modules
 107         touch $@
 108
 109 $(KERNEL_IPKG):
 110         rm -rf $(KERNEL_IDIR)
 111         mkdir -p $(KERNEL_IDIR)/etc
 112         $(SCRIPT_DIR)/make-ipkg-dir.sh $(KERNEL_IDIR) ../control/kernel.control $(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE) $(ARCH)
 113         if [ -f ./config/$(BOARD).modules ]; then \
 114                 cp ./config/$(BOARD).modules $(KERNEL_IDIR)/etc/modules; \
 115         fi
 116         $(IPKG_BUILD) $(KERNEL_IDIR) $(KERNEL_BUILD_DIR)
 117
 118 $(TOPDIR)/.kernel.mk: $(TOPDIR)/target/linux/$(BOARD)-$(KERNEL)/Makefile
 119         echo "CONFIG_BOARD:=$(BOARD)" > $@
 120         echo "CONFIG_KERNEL:=$(KERNEL)" >> $@
 121         echo "CONFIG_LINUX_VERSION:=$(LINUX_VERSION)" >> $@
 122         echo "CONFIG_LINUX_RELEASE:=$(LINUX_RELEASE)" >> $@
 123         echo "CONFIG_LINUX_KARCH:=$(LINUX_KARCH)" >> $@
 124
 125 pkg-install: FORCE
 126         @for pkg in $(INSTALL_TARGETS); do \
 127                 $(IPKG) install $$pkg || echo; \
 128         done
 129
 130 download: $(DL_DIR)/$(LINUX_SOURCE)
 131 prepare: $(LINUX_DIR)/.configured
 132         @mkdir -p $(LINUX_DIR) $(PACKAGE_DIR)
 133
 134 compile: prepare $(LINUX_DIR)/.linux-compile
 135         @$(MAKE) packages
 136
 137 install: compile $(LINUX_KERNEL)
 138
 139 mostlyclean: FORCE
 140         rm -f $(LINUX_DIR)/.linux-compile
 141         rm -f $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)/.modules_done
 142         rm -f $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)/.drivers-unpacked
 143         $(MAKE) -C $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION) clean
 144         rm -f $(LINUX_KERNEL)
 145
 146 rebuild: FORCE
 147         -$(MAKE) mostlyclean
 148         if [ -f $(LINUX_KERNEL) ]; then \
 149                 $(MAKE) clean; \
 150         fi
 151         $(MAKE) compile $(MAKE_TRACE)
 152
 153 clean: FORCE
 154         rm -f $(STAMP_DIR)/.linux-compile
 155         rm -rf $(KERNEL_BUILD_DIR)
 156         rm -f $(TARGETS)
 157