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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
  16 variant-$(CONFIG_XTENSA_VARIANT_FSF)            := fsf
  17 variant-$(CONFIG_XTENSA_VARIANT_LINUX_CUSTOM)   := custom
  18
  19 VARIANT = $(variant-y)
  20 export VARIANT
  21
  22 # Platform configuration
  23
  24 platform-$(CONFIG_XTENSA_PLATFORM_XT2000)       := xt2000
  25 platform-$(CONFIG_XTENSA_PLATFORM_ISS)          := iss
  26
  27 PLATFORM = $(platform-y)
  28 export PLATFORM
  29
  30 CFLAGS          += -pipe -mlongcalls
  31
  32 KBUILD_DEFCONFIG := iss_defconfig
  33
  34 # ramdisk/initrd support
  35 # You need a compressed ramdisk image, named ramdisk.gz in
  36 # arch/xtensa/boot/ramdisk
  37
  38 core-$(CONFIG_EMBEDDED_RAMDISK) += arch/xtensa/boot/ramdisk/
  39
  40 # Test for cross compiling
  41
  42 ifneq ($(VARIANT),)
  43   COMPILE_ARCH = $(shell uname -m)
  44
  45   ifneq ($(COMPILE_ARCH), xtensa)
  46     ifndef CROSS_COMPILE
  47       CROSS_COMPILE = xtensa_$(VARIANT)-
  48     endif
  49   endif
  50 endif
  51
  52 #
  53
  54 LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
  55
  56 head-y          := arch/xtensa/kernel/head.o
  57 core-y          += arch/xtensa/kernel/ arch/xtensa/mm/
  58 ifneq ($(PLATFORM),)
  59 core-y          += arch/xtensa/platform-$(PLATFORM)/
  60 endif
  61 libs-y          += arch/xtensa/lib/ $(LIBGCC)
  62
  63 boot            := arch/xtensa/boot
  64
  65 archinc         := include/asm-xtensa
  66
  67 archprepare: $(archinc)/.platform
  68
  69 # Update processor variant and platform symlinks if something which affects
  70 # them changed.
  71
  72 $(archinc)/.platform: $(wildcard include/config/arch/*.h) include/config/auto.conf
  73         @echo '  SYMLINK $(archinc)/variant -> $(archinc)/variant-$(VARIANT)'
  74         $(Q)mkdir -p $(archinc)
  75         $(Q)ln -fsn $(srctree)/$(archinc)/variant-$(VARIANT) $(archinc)/variant
  76         @echo '  SYMLINK $(archinc)/platform -> $(archinc)/platform-$(PLATFORM)'
  77         $(Q)ln -fsn $(srctree)/$(archinc)/platform-$(PLATFORM) $(archinc)/platform
  78         @touch $@
  79
  80
  81 all: zImage
  82
  83 bzImage : zImage
  84
  85 zImage zImage.initrd: vmlinux
  86         $(Q)$(MAKE) $(build)=$(boot) $@
  87
  88 CLEAN_FILES     += arch/xtensa/vmlinux.lds                      \
  89                    $(archinc)/platform $(archinc)/variant       \
  90                    $(archinc)/.platform
  91
  92 define archhelp
  93   @echo '* zImage      - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
  94 endef
  95