arch/xtensa/Makefile

   1 #
   2 # This file is subject to the terms and conditions of the GNU General Public
   3 # License.  See the file "COPYING" in the main directory of this archive
   4 # for more details.
   5 #
   6 # Copyright (C) 2001 - 2005  Tensilica Inc.
   7 #
   8 # This file is included by the global makefile so that you can add your own
   9 # architecture-specific flags and dependencies. Remember to do have actions
  10 # for "archclean" and "archdep" for cleaning up and making dependencies for
  11 # this architecture
  12
  13 # Core configuration.
  14 # (Use VAR=<xtensa_config> to use another default compiler.)
  15
  16 variant-$(CONFIG_XTENSA_VARIANT_FSF)            := fsf
  17 variant-$(CONFIG_XTENSA_VARIANT_DC232B)         := dc232b
  18 variant-$(CONFIG_XTENSA_VARIANT_S6000)          := s6000
  19 variant-$(CONFIG_XTENSA_VARIANT_LINUX_CUSTOM)   := custom
  20
  21 VARIANT = $(variant-y)
  22 export VARIANT
  23
  24 # Platform configuration
  25
  26 platform-$(CONFIG_XTENSA_PLATFORM_XT2000)       := xt2000
  27 platform-$(CONFIG_XTENSA_PLATFORM_ISS)          := iss
  28 platform-$(CONFIG_XTENSA_PLATFORM_S6105)        := s6105
  29
  30 PLATFORM = $(platform-y)
  31 export PLATFORM
  32
  33 # temporarily until string.h is fixed
  34 KBUILD_CFLAGS += -ffreestanding
  35
  36 KBUILD_CFLAGS += -pipe -mlongcalls
  37
  38 vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y))
  39 plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y))
  40
  41 ifeq ($(KBUILD_SRC),)
  42 KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(vardirs) $(plfdirs))
  43 else
  44 KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs))
  45 endif
  46
  47 KBUILD_DEFCONFIG := iss_defconfig
  48
  49 # ramdisk/initrd support
  50 # You need a compressed ramdisk image, named ramdisk.gz in
  51 # arch/xtensa/boot/ramdisk
  52
  53 core-$(CONFIG_EMBEDDED_RAMDISK) += arch/xtensa/boot/ramdisk/
  54
  55 # Test for cross compiling
  56
  57 ifneq ($(VARIANT),)
  58   COMPILE_ARCH = $(shell uname -m)
  59
  60   ifneq ($(COMPILE_ARCH), xtensa)
  61     ifndef CROSS_COMPILE
  62       CROSS_COMPILE = xtensa_$(VARIANT)-
  63     endif
  64   endif
  65 endif
  66
  67 # Only build variant and/or platform if it includes a Makefile
  68
  69 buildvar := $(shell test -a $(srctree)/arch/xtensa/variants/$(VARIANT)/Makefile && echo arch/xtensa/variants/$(VARIANT)/)
  70 buildplf := $(shell test -a $(srctree)/arch/xtensa/platforms/$(PLATFORM)/Makefile && echo arch/xtensa/platforms/$(PLATFORM)/)
  71
  72 # Find libgcc.a
  73
  74 LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
  75
  76 head-y          := arch/xtensa/kernel/head.o
  77 core-y          += arch/xtensa/kernel/ arch/xtensa/mm/
  78 core-y          += $(buildvar) $(buildplf)
  79
  80 libs-y          += arch/xtensa/lib/ $(LIBGCC)
  81
  82 boot            := arch/xtensa/boot
  83
  84 all: zImage
  85
  86 bzImage : zImage
  87
  88 zImage zImage.initrd: vmlinux
  89         $(Q)$(MAKE) $(build)=$(boot) $@
  90
  91 define archhelp
  92   @echo '* zImage      - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
  93 endef
  94