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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 # temporarily until string.h is fixed
  31 cflags-y += -ffreestanding
  32
  33 cflags-y += -pipe -mlongcalls
  34
  35 CFLAGS  += $(cflags-y)
  36
  37 KBUILD_DEFCONFIG := iss_defconfig
  38
  39 # ramdisk/initrd support
  40 # You need a compressed ramdisk image, named ramdisk.gz in
  41 # arch/xtensa/boot/ramdisk
  42
  43 core-$(CONFIG_EMBEDDED_RAMDISK) += arch/xtensa/boot/ramdisk/
  44
  45 # Test for cross compiling
  46
  47 ifneq ($(VARIANT),)
  48   COMPILE_ARCH = $(shell uname -m)
  49
  50   ifneq ($(COMPILE_ARCH), xtensa)
  51     ifndef CROSS_COMPILE
  52       CROSS_COMPILE = xtensa_$(VARIANT)-
  53     endif
  54   endif
  55 endif
  56
  57 #
  58
  59 LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
  60
  61 head-y          := arch/xtensa/kernel/head.o
  62 core-y          += arch/xtensa/kernel/ arch/xtensa/mm/
  63 ifneq ($(PLATFORM),)
  64 core-y          += arch/xtensa/platform-$(PLATFORM)/
  65 endif
  66 libs-y          += arch/xtensa/lib/ $(LIBGCC)
  67
  68 boot            := arch/xtensa/boot
  69
  70 archinc         := include/asm-xtensa
  71
  72 archprepare: $(archinc)/.platform
  73
  74 # Update processor variant and platform symlinks if something which affects
  75 # them changed.
  76
  77 $(archinc)/.platform: $(wildcard include/config/arch/*.h) include/config/auto.conf
  78         @echo '  SYMLINK $(archinc)/variant -> $(archinc)/variant-$(VARIANT)'
  79         $(Q)mkdir -p $(archinc)
  80         $(Q)ln -fsn $(srctree)/$(archinc)/variant-$(VARIANT) $(archinc)/variant
  81         @echo '  SYMLINK $(archinc)/platform -> $(archinc)/platform-$(PLATFORM)'
  82         $(Q)ln -fsn $(srctree)/$(archinc)/platform-$(PLATFORM) $(archinc)/platform
  83         @touch $@
  84
  85
  86 all: zImage
  87
  88 bzImage : zImage
  89
  90 zImage zImage.initrd: vmlinux
  91         $(Q)$(MAKE) $(build)=$(boot) $@
  92
  93 CLEAN_FILES     += arch/xtensa/vmlinux.lds                      \
  94                    $(archinc)/platform $(archinc)/variant       \
  95                    $(archinc)/.platform
  96
  97 define archhelp
  98   @echo '* zImage      - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
  99 endef
 100