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=hs38
  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 ${src}/arch/arc/include/asm/current.h
  22 endif
  23
  24 cflags-y                                += -fsection-anchors
  25
  26 cflags-$(CONFIG_ARC_HAS_LLSC)           += -mlock
  27 cflags-$(CONFIG_ARC_HAS_SWAPE)          += -mswape
  28
  29 ifdef CONFIG_ISA_ARCV2
  30
  31 ifndef CONFIG_ARC_HAS_LL64
  32 cflags-y                                += -mno-ll64
  33 endif
  34
  35 ifndef CONFIG_ARC_HAS_DIV_REM
  36 cflags-y                                += -mno-div-rem
  37 endif
  38
  39 endif
  40
  41 cfi := $(call as-instr,.cfi_startproc\n.cfi_endproc,-DARC_DW2_UNWIND_AS_CFI)
  42 cflags-$(CONFIG_ARC_DW2_UNWIND)         += -fasynchronous-unwind-tables $(cfi)
  43
  44 ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE
  45 # Generic build system uses -O2, we want -O3
  46 # Note: No need to add to cflags-y as that happens anyways
  47 #
  48 # Disable the false maybe-uninitialized warings gcc spits out at -O3
  49 ARCH_CFLAGS += -O3 $(call cc-disable-warning,maybe-uninitialized,)
  50 endif
  51
  52 # small data is default for elf32 tool-chain. If not usable, disable it
  53 # This also allows repurposing GP as scratch reg to gcc reg allocator
  54 disable_small_data := y
  55 cflags-$(disable_small_data)            += -mno-sdata -fcall-used-gp
  56
  57 cflags-$(CONFIG_CPU_BIG_ENDIAN)         += -mbig-endian
  58 ldflags-$(CONFIG_CPU_BIG_ENDIAN)        += -EB
  59
  60 LIBGCC  = $(shell $(CC) $(cflags-y) --print-libgcc-file-name)
  61
  62 # Modules with short calls might break for calls into builtin-kernel
  63 KBUILD_CFLAGS_MODULE    += -mlong-calls -mno-millicode
  64
  65 # Finally dump eveything into kernel build system
  66 KBUILD_CFLAGS   += $(cflags-y)
  67 KBUILD_AFLAGS   += $(KBUILD_CFLAGS)
  68 KBUILD_LDFLAGS  += $(ldflags-y)
  69
  70 head-y          := arch/arc/kernel/head.o
  71
  72 # See arch/arc/Kbuild for content of core part of the kernel
  73 core-y          += arch/arc/
  74
  75 # w/o this dtb won't embed into kernel binary
  76 core-y          += arch/arc/boot/dts/
  77
  78 core-y                          += arch/arc/plat-sim/
  79 core-$(CONFIG_ARC_PLAT_TB10X)   += arch/arc/plat-tb10x/
  80 core-$(CONFIG_ARC_PLAT_AXS10X)  += arch/arc/plat-axs10x/
  81 core-$(CONFIG_ARC_PLAT_EZNPS)   += arch/arc/plat-eznps/
  82 core-$(CONFIG_ARC_SOC_HSDK)     += arch/arc/plat-hsdk/
  83
  84 ifdef CONFIG_ARC_PLAT_EZNPS
  85 KBUILD_CPPFLAGS += -I$(srctree)/arch/arc/plat-eznps/include
  86 endif
  87
  88 drivers-$(CONFIG_OPROFILE)      += arch/arc/oprofile/
  89
  90 libs-y          += arch/arc/lib/ $(LIBGCC)
  91
  92 boot            := arch/arc/boot
  93
  94 boot_targets := uImage uImage.bin uImage.gz uImage.lzma
  95
  96 PHONY += $(boot_targets)
  97 $(boot_targets): vmlinux
  98         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
  99
 100 %.dtb %.dtb.S %.dtb.o: scripts
 101         $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
 102
 103 dtbs: scripts
 104         $(Q)$(MAKE) $(build)=$(boot)/dts
 105
 106 archclean:
 107         $(Q)$(MAKE) $(clean)=$(boot)