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