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