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 # Copyright (C) 2014 Cadence Design Systems Inc.
   8 #
   9 # This file is included by the global makefile so that you can add your own
  10 # architecture-specific flags and dependencies. Remember to do have actions
  11 # for "archclean" and "archdep" for cleaning up and making dependencies for
  12 # this architecture
  13
  14 # Core configuration.
  15 # (Use VAR=<xtensa_config> to use another default compiler.)
  16
  17 variant-y := $(patsubst "%",%,$(CONFIG_XTENSA_VARIANT_NAME))
  18
  19 VARIANT = $(variant-y)
  20 export VARIANT
  21
  22 # Test for cross compiling
  23
  24 ifneq ($(VARIANT),)
  25   COMPILE_ARCH = $(shell uname -m)
  26
  27   ifneq ($(COMPILE_ARCH), xtensa)
  28     ifndef CROSS_COMPILE
  29       CROSS_COMPILE = xtensa_$(VARIANT)-
  30     endif
  31   endif
  32 endif
  33
  34 # Platform configuration
  35
  36 platform-$(CONFIG_XTENSA_PLATFORM_XT2000)       := xt2000
  37 platform-$(CONFIG_XTENSA_PLATFORM_ISS)          := iss
  38 platform-$(CONFIG_XTENSA_PLATFORM_XTFPGA)       := xtfpga
  39
  40 PLATFORM = $(platform-y)
  41 export PLATFORM
  42
  43 # temporarily until string.h is fixed
  44 KBUILD_CFLAGS += -ffreestanding -D__linux__
  45 KBUILD_CFLAGS += -pipe -mlongcalls -mtext-section-literals
  46 KBUILD_CFLAGS += $(call cc-option,-mforce-no-pic,)
  47 KBUILD_CFLAGS += $(call cc-option,-mno-serialize-volatile,)
  48
  49 KBUILD_AFLAGS += -mlongcalls -mtext-section-literals
  50
  51 ifneq ($(CONFIG_LD_NO_RELAX),)
  52 LDFLAGS := --no-relax
  53 endif
  54
  55 ifeq ($(shell echo __XTENSA_EB__ | $(CC) -E - | grep -v "\#"),1)
  56 CHECKFLAGS += -D__XTENSA_EB__
  57 KBUILD_CPPFLAGS += -DCONFIG_CPU_BIG_ENDIAN
  58 endif
  59 ifeq ($(shell echo __XTENSA_EL__ | $(CC) -E - | grep -v "\#"),1)
  60 CHECKFLAGS += -D__XTENSA_EL__
  61 KBUILD_CPPFLAGS += -DCONFIG_CPU_LITTLE_ENDIAN
  62 endif
  63
  64 vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y))
  65 plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y))
  66
  67 ifeq ($(KBUILD_SRC),)
  68 KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(vardirs) $(plfdirs))
  69 else
  70 KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs))
  71 endif
  72
  73 KBUILD_DEFCONFIG := iss_defconfig
  74
  75 # Only build variant and/or platform if it includes a Makefile
  76
  77 buildvar := $(shell test -e $(srctree)/arch/xtensa/variants/$(VARIANT)/Makefile && echo arch/xtensa/variants/$(VARIANT)/)
  78 buildplf := $(shell test -e $(srctree)/arch/xtensa/platforms/$(PLATFORM)/Makefile && echo arch/xtensa/platforms/$(PLATFORM)/)
  79
  80 # Find libgcc.a
  81
  82 LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
  83
  84 head-y          := arch/xtensa/kernel/head.o
  85 core-y          += arch/xtensa/kernel/ arch/xtensa/mm/
  86 core-y          += $(buildvar) $(buildplf)
  87
  88 libs-y          += arch/xtensa/lib/ $(LIBGCC)
  89 drivers-$(CONFIG_OPROFILE)      += arch/xtensa/oprofile/
  90
  91 ifneq ($(CONFIG_BUILTIN_DTB),"")
  92 core-$(CONFIG_OF) += arch/xtensa/boot/dts/
  93 endif
  94
  95 boot            := arch/xtensa/boot
  96
  97 all Image zImage uImage: vmlinux
  98         $(Q)$(MAKE) $(build)=$(boot) $@
  99
 100 %.dtb:
 101         $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
 102
 103 dtbs: scripts
 104         $(Q)$(MAKE) $(build)=$(boot)/dts
 105
 106 define archhelp
 107   @echo '* Image       - Kernel ELF image with reset vector'
 108   @echo '* zImage      - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
 109   @echo '* uImage      - U-Boot wrapped image'
 110   @echo '  dtbs        - Build device tree blobs for enabled boards'
 111 endef