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.
  11
  12 # Core configuration.
  13 # (Use VAR=<xtensa_config> to use another default compiler.)
  14
  15 variant-y := $(CONFIG_XTENSA_VARIANT_NAME)
  16
  17 VARIANT = $(variant-y)
  18
  19 ifneq ($(VARIANT),)
  20   ifdef cross_compiling
  21     ifndef CROSS_COMPILE
  22       CROSS_COMPILE = xtensa_$(VARIANT)-
  23     endif
  24   endif
  25 endif
  26
  27 # Platform configuration
  28
  29 platform-$(CONFIG_XTENSA_PLATFORM_XT2000)       := xt2000
  30 platform-$(CONFIG_XTENSA_PLATFORM_ISS)          := iss
  31 platform-$(CONFIG_XTENSA_PLATFORM_XTFPGA)       := xtfpga
  32
  33 # temporarily until string.h is fixed
  34 KBUILD_CFLAGS += -ffreestanding -D__linux__
  35 KBUILD_CFLAGS += -pipe -mlongcalls -mtext-section-literals
  36 KBUILD_CFLAGS += $(call cc-option,-mforce-no-pic,)
  37 KBUILD_CFLAGS += $(call cc-option,-mno-serialize-volatile,)
  38 KBUILD_CFLAGS += $(call cc-option,-mno-fdpic,)
  39 ifneq ($(CONFIG_KERNEL_ABI_CALL0),)
  40 KBUILD_CFLAGS += -mabi=call0
  41 KBUILD_AFLAGS += -mabi=call0
  42 endif
  43
  44 KBUILD_AFLAGS += -mlongcalls -mtext-section-literals
  45 KBUILD_AFLAGS += $(call cc-option,-mno-fdpic,)
  46
  47 KBUILD_LDFLAGS += -m elf32xtensa
  48
  49 ifneq ($(CONFIG_LD_NO_RELAX),)
  50 KBUILD_LDFLAGS += --no-relax
  51 endif
  52
  53 CHECKFLAGS += -D$(if $(CONFIG_CPU_BIG_ENDIAN),__XTENSA_EB__,__XTENSA_EL__)
  54
  55 vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y))
  56 plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y))
  57
  58 KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs))
  59
  60 KBUILD_DEFCONFIG := iss_defconfig
  61
  62 libs-y          += arch/xtensa/lib/
  63
  64 boot            := arch/xtensa/boot
  65
  66 all Image zImage uImage xipImage: vmlinux
  67         $(Q)$(MAKE) $(build)=$(boot) $@
  68
  69 archheaders:
  70         $(Q)$(MAKE) $(build)=arch/xtensa/kernel/syscalls all
  71
  72 define archhelp
  73   @echo '* Image       - Kernel ELF image with reset vector'
  74   @echo '* zImage      - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
  75   @echo '* uImage      - U-Boot wrapped image'
  76   @echo '  xipImage    - XIP image'
  77 endef