linux/arch/xtensa/Makefile
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   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
  16variant-$(CONFIG_XTENSA_VARIANT_FSF)            := fsf
  17variant-$(CONFIG_XTENSA_VARIANT_DC232B)         := dc232b
  18variant-$(CONFIG_XTENSA_VARIANT_S6000)          := s6000
  19variant-$(CONFIG_XTENSA_VARIANT_LINUX_CUSTOM)   := custom
  20
  21VARIANT = $(variant-y)
  22export VARIANT
  23
  24# Platform configuration
  25
  26platform-$(CONFIG_XTENSA_PLATFORM_XT2000)       := xt2000
  27platform-$(CONFIG_XTENSA_PLATFORM_ISS)          := iss
  28platform-$(CONFIG_XTENSA_PLATFORM_S6105)        := s6105
  29
  30PLATFORM = $(platform-y)
  31export PLATFORM
  32
  33# temporarily until string.h is fixed
  34KBUILD_CFLAGS += -ffreestanding
  35
  36KBUILD_CFLAGS += -pipe -mlongcalls
  37
  38KBUILD_CFLAGS += $(call cc-option,-mforce-no-pic,)
  39
  40vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y))
  41plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y))
  42
  43ifeq ($(KBUILD_SRC),)
  44KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(vardirs) $(plfdirs))
  45else
  46KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs))
  47endif
  48
  49KBUILD_DEFCONFIG := iss_defconfig
  50
  51# ramdisk/initrd support
  52# You need a compressed ramdisk image, named ramdisk.gz in
  53# arch/xtensa/boot/ramdisk
  54
  55core-$(CONFIG_EMBEDDED_RAMDISK) += arch/xtensa/boot/ramdisk/
  56
  57# Test for cross compiling
  58
  59ifneq ($(VARIANT),)
  60  COMPILE_ARCH = $(shell uname -m)
  61
  62  ifneq ($(COMPILE_ARCH), xtensa)
  63    ifndef CROSS_COMPILE
  64      CROSS_COMPILE = xtensa_$(VARIANT)-
  65    endif
  66  endif
  67endif
  68
  69# Only build variant and/or platform if it includes a Makefile
  70
  71buildvar := $(shell test -e $(srctree)/arch/xtensa/variants/$(VARIANT)/Makefile && echo arch/xtensa/variants/$(VARIANT)/)
  72buildplf := $(shell test -e $(srctree)/arch/xtensa/platforms/$(PLATFORM)/Makefile && echo arch/xtensa/platforms/$(PLATFORM)/)
  73
  74# Find libgcc.a
  75
  76LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
  77
  78head-y          := arch/xtensa/kernel/head.o
  79core-y          += arch/xtensa/kernel/ arch/xtensa/mm/
  80core-y          += $(buildvar) $(buildplf)
  81
  82libs-y          += arch/xtensa/lib/ $(LIBGCC)
  83
  84boot            := arch/xtensa/boot
  85
  86all: zImage
  87
  88bzImage : zImage
  89
  90zImage zImage.initrd: vmlinux
  91        $(Q)$(MAKE) $(build)=$(boot) $@
  92
  93define archhelp
  94  @echo '* zImage      - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
  95endef
  96
  97
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