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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 CPU=<xtensa_config> to use another default compiler.)
  15
  16 cpu-$(CONFIG_XTENSA_CPU_LINUX_BE)       := linux_be
  17 cpu-$(CONFIG_XTENSA_CPU_LINUX_CUSTOM)   := linux_custom
  18
  19 CPU = $(cpu-y)
  20 export CPU
  21
  22 # Platform configuration
  23
  24 platform-$(CONFIG_XTENSA_PLATFORM_XT2000)       := xt2000
  25 platform-$(CONFIG_XTENSA_PLATFORM_ISS)          := iss
  26
  27 PLATFORM = $(platform-y)
  28 export PLATFORM
  29
  30 CPPFLAGS        += $(if $(KBUILD_SRC),-I$(srctree)/include/asm-xtensa/)
  31 CPPFLAGS        += -Iinclude/asm
  32 CFLAGS          += -pipe -mlongcalls
  33
  34 KBUILD_DEFCONFIG := iss_defconfig
  35
  36 # ramdisk/initrd support
  37 # You need a compressed ramdisk image, named ramdisk.gz in
  38 # arch/xtensa/boot/ramdisk
  39
  40 core-$(CONFIG_EMBEDDED_RAMDISK) += arch/xtensa/boot/ramdisk/
  41
  42 # Test for cross compiling
  43
  44 ifneq ($(CPU),)
  45   COMPILE_ARCH = $(shell uname -m)
  46
  47   ifneq ($(COMPILE_ARCH), xtensa)
  48     ifndef CROSS_COMPILE
  49       CROSS_COMPILE = xtensa_$(CPU)-
  50     endif
  51   endif
  52 endif
  53
  54 #
  55
  56 LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
  57
  58 head-y          := arch/xtensa/kernel/head.o
  59 core-y          += arch/xtensa/kernel/ arch/xtensa/mm/
  60 ifneq ($(PLATFORM),)
  61 core-y          += arch/xtensa/platform-$(PLATFORM)/
  62 endif
  63 libs-y          += arch/xtensa/lib/ $(LIBGCC)
  64
  65 boot            := arch/xtensa/boot
  66
  67 archinc         := include/asm-xtensa
  68
  69 arch/xtensa/kernel/asm-offsets.s: \
  70         arch/xtensa/kernel/asm-offsets.c $(archinc)/.platform
  71
  72 include/asm-xtensa/offsets.h: arch/xtensa/kernel/asm-offsets.s
  73         $(call filechk,gen-asm-offsets)
  74
  75 prepare: $(archinc)/.platform $(archinc)/offsets.h
  76
  77 # Update machine cpu and platform symlinks if something which affects
  78 # them changed.
  79
  80 $(archinc)/.platform: $(wildcard include/config/arch/*.h) include/config/MARKER
  81         @echo '  SYMLINK $(archinc)/xtensa/config -> $(archinc)/xtensa/config-$(CPU)'
  82         $(Q)mkdir -p $(archinc)
  83         $(Q)mkdir -p $(archinc)/xtensa
  84         $(Q)ln -fsn $(srctree)/$(archinc)/xtensa/config-$(CPU) $(archinc)/xtensa/config
  85         @echo '  SYMLINK $(archinc)/platform -> $(archinc)/platform-$(PLATFORM)'
  86         $(Q)ln -fsn $(srctree)/$(archinc)/platform-$(PLATFORM) $(archinc)/platform
  87         @touch $@
  88
  89
  90 all: zImage
  91
  92 bzImage : zImage
  93
  94 zImage zImage.initrd: vmlinux
  95         $(Q)$(MAKE) $(build)=$(boot) $@
  96
  97 CLEAN_FILES     += arch/xtensa/vmlinux.lds $(archinc)/offset.h \
  98                    $(archinc)/platform $(archinc)/xtensa/config \
  99                    $(archinc)/.platform
 100
 101 define archhelp
 102   @echo '* zImage      - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
 103 endef
 104