arch/arc/Makefile

   1 #
   2 # Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
   3 #
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License version 2 as
   6 # published by the Free Software Foundation.
   7 #
   8
   9 KBUILD_DEFCONFIG := nsim_hs_defconfig
  10
  11 cflags-y        += -fno-common -pipe -fno-builtin -mmedium-calls -D__linux__
  12 cflags-$(CONFIG_ISA_ARCOMPACT)  += -mA7
  13 cflags-$(CONFIG_ISA_ARCV2)      += -mcpu=archs
  14
  15 ifdef CONFIG_ARC_CURR_IN_REG
  16 # For a global register defintion, make sure it gets passed to every file
  17 # We had a customer reported bug where some code built in kernel was NOT using
  18 # any kernel headers, and missing the r25 global register
  19 # Can't do unconditionally because of recursive include issues
  20 # due to <linux/thread_info.h>
  21 LINUXINCLUDE    +=  -include ${src}/arch/arc/include/asm/current.h
  22 endif
  23
  24 upto_gcc44    :=  $(call cc-ifversion, -le, 0404, y)
  25 atleast_gcc44 :=  $(call cc-ifversion, -ge, 0404, y)
  26
  27 cflags-$(atleast_gcc44)                 += -fsection-anchors
  28
  29 cflags-$(CONFIG_ARC_HAS_LLSC)           += -mlock
  30 cflags-$(CONFIG_ARC_HAS_SWAPE)          += -mswape
  31
  32 ifdef CONFIG_ISA_ARCV2
  33
  34 ifndef CONFIG_ARC_HAS_LL64
  35 cflags-y                                += -mno-ll64
  36 endif
  37
  38 ifndef CONFIG_ARC_HAS_DIV_REM
  39 cflags-y                                += -mno-div-rem
  40 endif
  41
  42 endif
  43
  44 cfi := $(call as-instr,.cfi_startproc\n.cfi_endproc,-DARC_DW2_UNWIND_AS_CFI)
  45 cflags-$(CONFIG_ARC_DW2_UNWIND)         += -fasynchronous-unwind-tables $(cfi)
  46
  47 ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE
  48 # Generic build system uses -O2, we want -O3
  49 # Note: No need to add to cflags-y as that happens anyways
  50 #
  51 # Disable the false maybe-uninitialized warings gcc spits out at -O3
  52 ARCH_CFLAGS += -O3 $(call cc-disable-warning,maybe-uninitialized,)
  53 endif
  54
  55 # small data is default for elf32 tool-chain. If not usable, disable it
  56 # This also allows repurposing GP as scratch reg to gcc reg allocator
  57 disable_small_data := y
  58 cflags-$(disable_small_data)            += -mno-sdata -fcall-used-gp
  59
  60 cflags-$(CONFIG_CPU_BIG_ENDIAN)         += -mbig-endian
  61 ldflags-$(CONFIG_CPU_BIG_ENDIAN)        += -EB
  62
  63 # STAR 9000518362: (fixed with binutils shipping with gcc 4.8)
  64 # arc-linux-uclibc-ld (buildroot) or arceb-elf32-ld (EZChip) don't accept
  65 # --build-id w/o "-marclinux". Default arc-elf32-ld is OK
  66 ldflags-$(upto_gcc44)                   += -marclinux
  67
  68 LIBGCC  = $(shell $(CC) $(cflags-y) --print-libgcc-file-name)
  69
  70 # Modules with short calls might break for calls into builtin-kernel
  71 KBUILD_CFLAGS_MODULE    += -mlong-calls -mno-millicode
  72
  73 # Finally dump eveything into kernel build system
  74 KBUILD_CFLAGS   += $(cflags-y)
  75 KBUILD_AFLAGS   += $(KBUILD_CFLAGS)
  76 LDFLAGS         += $(ldflags-y)
  77
  78 head-y          := arch/arc/kernel/head.o
  79
  80 # See arch/arc/Kbuild for content of core part of the kernel
  81 core-y          += arch/arc/
  82
  83 # w/o this dtb won't embed into kernel binary
  84 core-y          += arch/arc/boot/dts/
  85
  86 core-y                          += arch/arc/plat-sim/
  87 core-$(CONFIG_ARC_PLAT_TB10X)   += arch/arc/plat-tb10x/
  88 core-$(CONFIG_ARC_PLAT_AXS10X)  += arch/arc/plat-axs10x/
  89 core-$(CONFIG_ARC_PLAT_EZNPS)   += arch/arc/plat-eznps/
  90 core-$(CONFIG_ARC_SOC_HSDK)     += arch/arc/plat-hsdk/
  91
  92 ifdef CONFIG_ARC_PLAT_EZNPS
  93 KBUILD_CPPFLAGS += -I$(srctree)/arch/arc/plat-eznps/include
  94 endif
  95
  96 drivers-$(CONFIG_OPROFILE)      += arch/arc/oprofile/
  97
  98 libs-y          += arch/arc/lib/ $(LIBGCC)
  99
 100 boot            := arch/arc/boot
 101
 102 boot_targets := uImage uImage.bin uImage.gz uImage.lzma
 103
 104 PHONY += $(boot_targets)
 105 $(boot_targets): vmlinux
 106         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 107
 108 %.dtb %.dtb.S %.dtb.o: scripts
 109         $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
 110
 111 dtbs: scripts
 112         $(Q)$(MAKE) $(build)=$(boot)/dts
 113
 114 archclean:
 115         $(Q)$(MAKE) $(clean)=$(boot)