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 ifdef CONFIG_ARC_USE_UNALIGNED_MEM_ACCESS
  32 cflags-y                                += -munaligned-access
  33 else
  34 cflags-y                                += -mno-unaligned-access
  35 endif
  36
  37 ifndef CONFIG_ARC_HAS_LL64
  38 cflags-y                                += -mno-ll64
  39 endif
  40
  41 ifndef CONFIG_ARC_HAS_DIV_REM
  42 cflags-y                                += -mno-div-rem
  43 endif
  44
  45 endif
  46
  47 cfi := $(call as-instr,.cfi_startproc\n.cfi_endproc,-DARC_DW2_UNWIND_AS_CFI)
  48 cflags-$(CONFIG_ARC_DW2_UNWIND)         += -fasynchronous-unwind-tables $(cfi)
  49
  50 ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE
  51 # Generic build system uses -O2, we want -O3
  52 # Note: No need to add to cflags-y as that happens anyways
  53 #
  54 # Disable the false maybe-uninitialized warings gcc spits out at -O3
  55 ARCH_CFLAGS += -O3 $(call cc-disable-warning,maybe-uninitialized,)
  56 endif
  57
  58 # small data is default for elf32 tool-chain. If not usable, disable it
  59 # This also allows repurposing GP as scratch reg to gcc reg allocator
  60 disable_small_data := y
  61 cflags-$(disable_small_data)            += -mno-sdata -fcall-used-gp
  62
  63 cflags-$(CONFIG_CPU_BIG_ENDIAN)         += -mbig-endian
  64 ldflags-$(CONFIG_CPU_BIG_ENDIAN)        += -EB
  65
  66 LIBGCC  = $(shell $(CC) $(cflags-y) --print-libgcc-file-name)
  67
  68 # Modules with short calls might break for calls into builtin-kernel
  69 KBUILD_CFLAGS_MODULE    += -mlong-calls -mno-millicode
  70
  71 # Finally dump eveything into kernel build system
  72 KBUILD_CFLAGS   += $(cflags-y)
  73 KBUILD_AFLAGS   += $(KBUILD_CFLAGS)
  74 KBUILD_LDFLAGS  += $(ldflags-y)
  75
  76 head-y          := arch/arc/kernel/head.o
  77
  78 # See arch/arc/Kbuild for content of core part of the kernel
  79 core-y          += arch/arc/
  80
  81 # w/o this dtb won't embed into kernel binary
  82 core-y          += arch/arc/boot/dts/
  83
  84 core-y                          += arch/arc/plat-sim/
  85 core-$(CONFIG_ARC_PLAT_TB10X)   += arch/arc/plat-tb10x/
  86 core-$(CONFIG_ARC_PLAT_AXS10X)  += arch/arc/plat-axs10x/
  87 core-$(CONFIG_ARC_PLAT_EZNPS)   += arch/arc/plat-eznps/
  88 core-$(CONFIG_ARC_SOC_HSDK)     += arch/arc/plat-hsdk/
  89
  90 ifdef CONFIG_ARC_PLAT_EZNPS
  91 KBUILD_CPPFLAGS += -I$(srctree)/arch/arc/plat-eznps/include
  92 endif
  93
  94 drivers-$(CONFIG_OPROFILE)      += arch/arc/oprofile/
  95
  96 libs-y          += arch/arc/lib/ $(LIBGCC)
  97
  98 boot            := arch/arc/boot
  99
 100 #default target for make without any arguments.
 101 KBUILD_IMAGE    := $(boot)/bootpImage
 102
 103 all:    bootpImage
 104 bootpImage: vmlinux
 105
 106 boot_targets += uImage uImage.bin uImage.gz
 107
 108 $(boot_targets): vmlinux
 109         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 110
 111 archclean:
 112         $(Q)$(MAKE) $(clean)=$(boot)