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-$(CONFIG_XTENSA_VARIANT_DC233C)         := dc233c
  19 variant-$(CONFIG_XTENSA_VARIANT_S6000)          := s6000
  20 variant-$(CONFIG_XTENSA_VARIANT_LINUX_CUSTOM)   := custom
  21
  22 VARIANT = $(variant-y)
  23 export VARIANT
  24
  25 # Test for cross compiling
  26
  27 ifneq ($(VARIANT),)
  28   COMPILE_ARCH = $(shell uname -m)
  29
  30   ifneq ($(COMPILE_ARCH), xtensa)
  31     ifndef CROSS_COMPILE
  32       CROSS_COMPILE = xtensa_$(VARIANT)-
  33     endif
  34   endif
  35 endif
  36
  37 # Platform configuration
  38
  39 platform-$(CONFIG_XTENSA_PLATFORM_XT2000)       := xt2000
  40 platform-$(CONFIG_XTENSA_PLATFORM_ISS)          := iss
  41 platform-$(CONFIG_XTENSA_PLATFORM_S6105)        := s6105
  42 platform-$(CONFIG_XTENSA_PLATFORM_XTFPGA)       := xtfpga
  43
  44 PLATFORM = $(platform-y)
  45 export PLATFORM
  46
  47 # temporarily until string.h is fixed
  48 KBUILD_CFLAGS += -ffreestanding -D__linux__
  49
  50 KBUILD_CFLAGS += -pipe -mlongcalls
  51
  52 KBUILD_CFLAGS += $(call cc-option,-mforce-no-pic,)
  53
  54 ifneq ($(CONFIG_LD_NO_RELAX),)
  55 LDFLAGS := --no-relax
  56 endif
  57
  58 ifeq ($(shell echo -e __XTENSA_EB__ | $(CC) -E - | grep -v "\#"),1)
  59 CHECKFLAGS += -D__XTENSA_EB__
  60 endif
  61 ifeq ($(shell echo -e __XTENSA_EL__ | $(CC) -E - | grep -v "\#"),1)
  62 CHECKFLAGS += -D__XTENSA_EL__
  63 endif
  64
  65 vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y))
  66 plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y))
  67
  68 ifeq ($(KBUILD_SRC),)
  69 KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(vardirs) $(plfdirs))
  70 else
  71 KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs))
  72 endif
  73
  74 KBUILD_DEFCONFIG := iss_defconfig
  75
  76 # Only build variant and/or platform if it includes a Makefile
  77
  78 buildvar := $(shell test -e $(srctree)/arch/xtensa/variants/$(VARIANT)/Makefile && echo arch/xtensa/variants/$(VARIANT)/)
  79 buildplf := $(shell test -e $(srctree)/arch/xtensa/platforms/$(PLATFORM)/Makefile && echo arch/xtensa/platforms/$(PLATFORM)/)
  80
  81 # Find libgcc.a
  82
  83 LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
  84
  85 head-y          := arch/xtensa/kernel/head.o
  86 core-y          += arch/xtensa/kernel/ arch/xtensa/mm/
  87 core-y          += $(buildvar) $(buildplf)
  88
  89 libs-y          += arch/xtensa/lib/ $(LIBGCC)
  90 drivers-$(CONFIG_OPROFILE)      += arch/xtensa/oprofile/
  91
  92 ifneq ($(CONFIG_BUILTIN_DTB),"")
  93 core-$(CONFIG_OF) += arch/xtensa/boot/dts/
  94 endif
  95
  96 boot            := arch/xtensa/boot
  97
  98 all: zImage
  99
 100 bzImage : zImage
 101
 102 zImage: vmlinux
 103         $(Q)$(MAKE) $(build)=$(boot) $@
 104
 105 %.dtb:
 106         $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
 107
 108 define archhelp
 109   @echo '* zImage      - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
 110 endef