arch/mips64/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 # This file is included by the global makefile so that you can add your own
   7 # architecture-specific flags and dependencies. Remember to do have actions
   8 # for "archclean" and "archdep" for cleaning up and making dependencies for
   9 # this architecture
  10 #
  11
  12 #
  13 # Select the object file format to substitute into the linker script.
  14 #
  15 CPP=$(CC) -E
  16 ifdef CONFIG_CPU_LITTLE_ENDIAN
  17 tool-prefix     = mips64el-linux-
  18 else
  19 tool-prefix     = mips64-linux-
  20 endif
  21
  22 ifdef CONFIG_CROSSCOMPILE
  23 CROSS_COMPILE  = $(tool-prefix)
  24 endif
  25
  26 #
  27 # The ELF GCC uses -G0 -mabicalls -fpic as default.  We don't need PIC
  28 # code in the kernel since it only slows down the whole thing.  For the
  29 # old GCC these options are just the defaults.  At some point we might
  30 # make use of global pointer optimizations.
  31 #
  32 # The DECStation requires an ECOFF kernel for remote booting, other MIPS
  33 # machines may also.  Since BFD is incredibly buggy with respect to
  34 # crossformat linking we rely on the elf2ecoff tool for format conversion.
  35 #
  36 CFLAGS          += -I $(TOPDIR)/include/asm $(CFLAGS)
  37 CFLAGS          += -mabi=64 -G 0 -mno-abicalls -fno-pic -Wa,--trap -pipe
  38 LINKFLAGS       += -G 0 -static # -N
  39 MODFLAGS        += -mlong-calls
  40
  41 ifdef CONFIG_REMOTE_DEBUG
  42 CFLAGS          := $(CFLAGS) -g
  43 endif
  44
  45 #
  46 # CPU-dependent compiler/assembler options for optimization.
  47 #
  48 ifdef CONFIG_CPU_R4300
  49 CFLAGS          := $(CFLAGS) -mcpu=r4300 -mips3
  50 endif
  51 ifdef CONFIG_CPU_R4X00
  52 CFLAGS          := $(CFLAGS) -mcpu=r4600 -mips3
  53 endif
  54 ifdef CONFIG_CPU_R5000
  55 CFLAGS          := $(CFLAGS) -mcpu=r8000 -mips4
  56 endif
  57 ifdef CONFIG_CPU_NEVADA
  58 CFLAGS          := $(CFLAGS) -mcpu=r8000 -mips3 -mmad
  59 endif
  60 ifdef CONFIG_CPU_R8000
  61 CFLAGS          := $(CFLAGS) -mcpu=r8000 -mips4
  62 endif
  63 ifdef CONFIG_CPU_R10000
  64 CFLAGS          := $(CFLAGS) -mcpu=r8000 -mips4
  65 endif
  66
  67 #
  68 # Board-dependent options and extra files
  69 #
  70 ifdef CONFIG_SGI_IP22
  71 LIBS          += arch/mips64/sgi-ip22/ip22.a arch/mips64/arc/arclib.a
  72 SUBDIRS       += arch/mips64/sgi-ip22 arch/mips64/arc
  73 #
  74 # Set LOADADDR to >= 0x88069000 if you want to leave space for symmon,
  75 # 0x88004000 for production kernels.  Note that the value must be
  76 # 16kb aligned or the handling of the current variable will break.
  77 #
  78 LOADADDR      += 0x88004000
  79 endif
  80
  81 ifdef CONFIG_SGI_IP27
  82 LIBS          += arch/mips64/sgi-ip27/ip27.a arch/mips64/arc/arclib.a
  83 SUBDIRS       += arch/mips64/sgi-ip27 arch/mips64/arc
  84 #
  85 # Set LOADADDR to >= 0xc000000000300000 if you want to leave space for
  86 # symmon, 0xc00000000001c000 for production kernels.  Note that the value
  87 # must be 16kb aligned or the handling of the current variable will break.
  88 #
  89 #LOADADDR      += 0xa80000000001c000
  90 ifdef CONFIG_MAPPED_KERNEL
  91 LOADADDR      += 0xc001c000
  92 else
  93 LOADADDR      += 0x8001c000
  94 endif
  95 endif
  96
  97 #
  98 # Some machines like the Indy need 32-bit ELF binaries for booting purposes.
  99 # Other need ECOFF, so we build a 32-bit ELF binary for them which we then
 100 # convert to ECOFF using elf2ecoff.
 101 #
 102 ifdef CONFIG_BOOT_ELF32
 103 CFLAGS += -Wa,-32
 104 LINKFLAGS += -T arch/mips64/ld.script.elf32
 105 endif
 106 #
 107 # The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
 108 # ELF files from 32-bit files by conversion.
 109 #
 110 ifdef CONFIG_BOOT_ELF64
 111 CFLAGS += -Wa,-32
 112 LINKFLAGS += -T arch/mips64/ld.script.elf32
 113 #AS += -64
 114 #LD += -m elf64bmip
 115 #LINKFLAGS += -T arch/mips64/ld.script.elf64
 116 endif
 117
 118 LINKFLAGS += -Ttext $(LOADADDR)
 119
 120 HEAD := arch/mips64/kernel/head.o arch/mips64/kernel/init_task.o
 121
 122 SUBDIRS := $(addprefix arch/mips64/, tools) $(SUBDIRS) $(addprefix arch/mips64/, kernel mm lib)
 123 CORE_FILES := arch/mips64/kernel/kernel.o arch/mips64/mm/mm.o $(CORE_FILES)
 124 LIBS := arch/mips64/lib/lib.a $(LIBS)
 125
 126 MAKEBOOT = $(MAKE) -C arch/$(ARCH)/boot
 127
 128 ifdef CONFIG_CPU_LITTLE_ENDIAN
 129 64bit-bfd = elf64-littlemips
 130 else
 131 64bit-bfd = elf64-bigmips
 132 endif
 133
 134 vmlinux: arch/mips64/ld.script.elf32
 135 arch/mips64/ld.script.elf32: arch/mips64/ld.script.elf32.S
 136         $(CPP) -C -P -I$(HPATH) -imacros $(HPATH)/asm-mips64/sn/mapped_kernel.h -Umips arch/mips64/ld.script.elf32.S > arch/mips64/ld.script.elf32
 137
 138 ifdef CONFIG_MAPPED_KERNEL
 139 vmlinux.64: vmlinux
 140         $(OBJCOPY) -O $(64bit-bfd) --change-addresses=0xbfffffff40000000 $< $@
 141 else
 142 vmlinux.64: vmlinux
 143         $(OBJCOPY) -O $(64bit-bfd) --change-addresses=0xa7ffffff80000000 $< $@
 144 endif
 145
 146 zImage: vmlinux
 147         @$(MAKEBOOT) zImage
 148
 149 compressed: zImage
 150
 151 zdisk: vmlinux
 152         @$(MAKEBOOT) zdisk
 153
 154 archclean:
 155         @$(MAKEBOOT) clean
 156         $(MAKE) -C arch/$(ARCH)/kernel clean
 157         $(MAKE) -C arch/$(ARCH)/tools clean
 158         rm -f vmlinux.64 arch/$(ARCH)/ld.script.elf32
 159
 160 archmrproper:
 161         @$(MAKEBOOT) mrproper
 162         $(MAKE) -C arch/$(ARCH)/tools mrproper
 163
 164 archdep:
 165         if [ ! -f $(TOPDIR)/include/asm-$(ARCH)/offset.h ]; then \
 166          touch $(TOPDIR)/include/asm-$(ARCH)/offset.h; \
 167         fi;
 168         @$(MAKEBOOT) dep