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