linux.mk 3.7 KB

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  1. #############################################################
  2. #
  3. # Linux kernel targets
  4. #
  5. # Note: If you have any patches to apply, create the directory
  6. # sources/kernel-patches and put your patches in there and number
  7. # them in the order you wish to apply them... i.e.
  8. #
  9. # sources/kernel-patches/001-my-special-stuff.bz2
  10. # sources/kernel-patches/003-gcc-Os.bz2
  11. # sources/kernel-patches/004_no-warnings.bz2
  12. # sources/kernel-patches/030-lowlatency-mini.bz2
  13. # sources/kernel-patches/031-lowlatency-fixes-5.bz2
  14. # sources/kernel-patches/099-shutup.bz2
  15. # etc...
  16. #
  17. # these patches will all be applied by the patch-kernel.sh
  18. # script (which will also abort the build if it finds rejects)
  19. # -Erik
  20. #
  21. #############################################################
  22. ifneq ($(filter $(TARGETS),linux),)
  23. # Version of Linux to download and then apply patches to
  24. DOWNLOAD_LINUX_VERSION=2.4.20
  25. # Version of Linux AFTER patches
  26. LINUX_VERSION=2.4.21-pre4
  27. LINUX_FORMAT=bzImage
  28. LINUX_BINLOC=arch/$(ARCH)/boot/$(LINUX_FORMAT)
  29. #LINUX_FORMAT=zImage
  30. #LINUX_BINLOC=arch/ppc/boot/images/zImage.prep
  31. LINUX_DIR=$(BUILD_DIR)/linux-$(LINUX_VERSION)
  32. LINUX_SOURCE=linux-$(DOWNLOAD_LINUX_VERSION).tar.bz2
  33. LINUX_SITE=ftp://ftp.kernel.org/pub/linux/kernel/v2.4
  34. LINUX_KCONFIG=$(SOURCE_DIR)/linux.config
  35. LINUX_KERNEL=$(BUILD_DIR)/buildroot-kernel
  36. # Used by pcmcia-cs and others
  37. LINUX_SOURCE_DIR=$(LINUX_DIR)
  38. $(DL_DIR)/$(LINUX_SOURCE):
  39. $(WGET) -P $(DL_DIR) $(LINUX_SITE)/$(LINUX_SOURCE)
  40. $(LINUX_DIR)/.unpacked: $(DL_DIR)/$(LINUX_SOURCE)
  41. rm -rf $(LINUX_DIR)
  42. bzcat $(DL_DIR)/$(LINUX_SOURCE) | tar -C $(BUILD_DIR) -xvf -
  43. ifneq ($(DOWNLOAD_LINUX_VERSION),$(LINUX_VERSION))
  44. # Rename the dir from the downloaded version to the AFTER patch version
  45. mv -f $(BUILD_DIR)/linux-$(DOWNLOAD_LINUX_VERSION) $(BUILD_DIR)/linux-$(LINUX_VERSION)
  46. endif
  47. mkdir -p $(SOURCE_DIR)/kernel-patches
  48. $(SOURCE_DIR)/patch-kernel.sh $(LINUX_DIR) $(SOURCE_DIR)/kernel-patches
  49. -(cd $(BUILD_DIR); ln -sf $(LINUX_DIR) linux)
  50. touch $(LINUX_DIR)/.unpacked
  51. $(LINUX_KCONFIG):
  52. @if [ ! -f "$(LINUX_KCONFIG)" ] ; then \
  53. echo ""; \
  54. echo "You should create a .config for your kernel"; \
  55. echo "and install it as $(LINUX_KCONFIG)"; \
  56. echo ""; \
  57. sleep 5; \
  58. fi;
  59. $(LINUX_DIR)/.configured $(BUILD_DIR)/linux/.configured: $(LINUX_DIR)/.unpacked $(LINUX_KCONFIG)
  60. perl -i -p -e "s,^CROSS_COMPILE.*,CROSS_COMPILE=$(KERNEL_CROSS),g;" $(LINUX_DIR)/Makefile
  61. -cp $(LINUX_KCONFIG) $(LINUX_DIR)/.config
  62. $(MAKE) -C $(LINUX_DIR) oldconfig include/linux/version.h
  63. touch $(LINUX_DIR)/.configured
  64. $(LINUX_DIR)/.depend_done: $(LINUX_DIR)/.configured
  65. $(MAKE) -C $(LINUX_DIR) dep
  66. touch $(LINUX_DIR)/.depend_done
  67. $(LINUX_DIR)/$(LINUX_BINLOC): $(LINUX_DIR)/.depend_done
  68. $(MAKE) -C $(LINUX_DIR) $(LINUX_FORMAT)
  69. $(MAKE) -C $(LINUX_DIR) modules
  70. $(LINUX_KERNEL): $(LINUX_DIR)/$(LINUX_BINLOC)
  71. cp -fa $(LINUX_DIR)/$(LINUX_BINLOC) $(LINUX_KERNEL)
  72. touch -c $(LINUX_KERNEL)
  73. $(TARGET_DIR)/lib/modules/$(LINUX_VERSION)/modules.dep: $(LINUX_KERNEL)
  74. rm -rf $(TARGET_DIR)/lib/modules
  75. rm -f $(TARGET_DIR)/sbin/cardmgr
  76. $(MAKE) -C $(LINUX_DIR) INSTALL_MOD_PATH=$(TARGET_DIR) modules_install
  77. (cd $(TARGET_DIR)/lib/modules; ln -s $(LINUX_VERSION)/kernel/drivers .)
  78. $(STAGING_DIR)/include/linux/version.h: $(LINUX_DIR)/.configured
  79. mkdir -p $(STAGING_DIR)/include
  80. tar -ch -C $(LINUX_DIR)/include -f - linux | tar -xf - -C $(STAGING_DIR)/include/
  81. tar -ch -C $(LINUX_DIR)/include -f - asm | tar -xf - -C $(STAGING_DIR)/include/
  82. linux: $(STAGING_DIR)/include/linux/version.h $(TARGET_DIR)/lib/modules/$(LINUX_VERSION)/modules.dep
  83. # This has been renamed so we do _NOT_ by default run this on 'make clean'
  84. linuxclean: clean
  85. rm -f $(LINUX_KERNEL)
  86. -$(MAKE) -C $(LINUX_DIR) clean
  87. linux-dirclean:
  88. rm -rf $(LINUX_DIR)
  89. endif