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 = $(variant-y)
  20
  21 ifneq ($(VARIANT),)
  22   ifdef cross_compiling
  23     ifndef CROSS_COMPILE
  24       CROSS_COMPILE = xtensa_$(VARIANT)-
  25     endif
  26   endif
  27 endif
  28
  29 # Platform configuration
  30
  31 platform-$(CONFIG_XTENSA_PLATFORM_XT2000)       := xt2000
  32 platform-$(CONFIG_XTENSA_PLATFORM_ISS)          := iss
  33 platform-$(CONFIG_XTENSA_PLATFORM_XTFPGA)       := xtfpga
  34
  35 PLATFORM = $(platform-y)
  36
  37 # temporarily until string.h is fixed
  38 KBUILD_CFLAGS += -ffreestanding -D__linux__
  39 KBUILD_CFLAGS += -pipe -mlongcalls -mtext-section-literals
  40 KBUILD_CFLAGS += $(call cc-option,-mforce-no-pic,)
  41 KBUILD_CFLAGS += $(call cc-option,-mno-serialize-volatile,)
  42
  43 KBUILD_AFLAGS += -mlongcalls -mtext-section-literals
  44
  45 ifneq ($(CONFIG_LD_NO_RELAX),)
  46 KBUILD_LDFLAGS := --no-relax
  47 endif
  48
  49 CHECKFLAGS += -D$(if $(CONFIG_CPU_BIG_ENDIAN),__XTENSA_EB__,__XTENSA_EL__)
  50
  51 vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y))
  52 plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y))
  53
  54 KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs))
  55
  56 KBUILD_DEFCONFIG := iss_defconfig
  57
  58 # Only build platform if it includes a Makefile
  59 buildplf := $(shell test -e $(srctree)/arch/xtensa/platforms/$(PLATFORM)/Makefile && echo arch/xtensa/platforms/$(PLATFORM)/)
  60
  61 # Find libgcc.a
  62
  63 LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
  64
  65 head-y          := arch/xtensa/kernel/head.o
  66 core-y          += arch/xtensa/kernel/ arch/xtensa/mm/
  67 core-y          += $(buildplf)
  68 core-y          += arch/xtensa/boot/dts/
  69
  70 libs-y          += arch/xtensa/lib/ $(LIBGCC)
  71
  72 boot            := arch/xtensa/boot
  73
  74 all Image zImage uImage xipImage: vmlinux
  75         $(Q)$(MAKE) $(build)=$(boot) $@
  76
  77 archheaders:
  78         $(Q)$(MAKE) $(build)=arch/xtensa/kernel/syscalls all
  79
  80 define archhelp
  81   @echo '* Image       - Kernel ELF image with reset vector'
  82   @echo '* zImage      - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
  83   @echo '* uImage      - U-Boot wrapped image'
  84   @echo '  xipImage    - XIP image'
  85 endef