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 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 = $(cpu-y)
  20 export CPU
  21
  22 # Platform configuration
  23
  24 platform-y                                      := common
  25 platform-$(CONFIG_XTENSA_PLATFORM_XT2000)       := xt2000
  26 platform-$(CONFIG_XTENSA_PLATFORM_ISS)          := iss
  27
  28 PLATFORM = $(platform-y)
  29 export PLATFORM
  30
  31 #LDFLAGS_vmlinux                := -T$(word 1,$(LINKSCRIPT))
  32 AFLAGS_vmlinux.lds.o    := -Uxtensa
  33 CPPFLAGS                += -Iarch/xtensa -Iinclude/asm  -mlongcalls  -g
  34 AFLAGS                  += -Iarch/xtensa -Iinclude/asm
  35 CPP                     = $(CC) -E $(CFLAGS)
  36
  37 cflags-y        += -Iarch/xtensa -pipe -mlongcalls
  38
  39
  40 KBUILD_DEFCONFIG := common_defconfig
  41
  42 # ramdisk/initrd support
  43 # You need a compressed ramdisk image, named ramdisk.gz in
  44 # arch/xtensa/boot/ramdisk
  45
  46 core-$(CONFIG_EMBEDDED_RAMDISK) += arch/xtensa/boot/ramdisk/
  47
  48 # Test for cross compiling
  49
  50 ifneq ($(CPU),)
  51   COMPILE_ARCH = $(shell uname -m)
  52
  53   ifneq ($(COMPILE_ARCH), xtensa)
  54     ifndef CROSS_COMPILE
  55       CROSS_COMPILE = xtensa_$(CPU)-
  56     endif
  57   endif
  58 endif
  59
  60 #
  61
  62 LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
  63
  64 head-y          := arch/xtensa/kernel/head.o
  65 core-y          += arch/xtensa/kernel/ \
  66                    arch/xtensa/mm/ arch/xtensa/platform-$(PLATFORM)/
  67 libs-y          += arch/xtensa/lib/ $(LIBGCC)
  68
  69 boot    := arch/xtensa/boot
  70
  71 arch/xtensa/kernel/asm-offsets.s: \
  72         arch/xtensa/kernel/asm-offsets.c \
  73         include/asm-xtensa/.platform
  74
  75 include/asm-xtensa/offsets.h: arch/xtensa/kernel/asm-offsets.s
  76         $(call filechk,gen-asm-offsets)
  77
  78 prepare: include/asm-xtensa/.platform include/asm-xtensa/offsets.h
  79
  80 # Update machine cpu and platform symlinks if something which affects
  81 # them changed.
  82
  83 include/asm-xtensa/.platform: $(wildcard include/config/arch/*.h)
  84         @echo '  Setting up cpu ($(CPU)) and platform ($(PLATFORM)) symlinks'
  85         $(Q)rm -f include/asm-xtensa/platform
  86         $(Q)rm -f include/asm-xtensa/xtensa/config
  87         $(Q)(cd include/asm-xtensa/; ln -sf platform-$(PLATFORM) platform)
  88         $(Q)(cd include/asm-xtensa/xtensa; ln -sf config-$(CPU) config)
  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 include/asm-xtensa/offset.h
  98
  99 define archhelp
 100   @echo '* zImage      - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
 101 endef
 102