arch/alpha/Makefile

   1 #
   2 # alpha/Makefile
   3 #
   4 # This file is subject to the terms and conditions of the GNU General Public
   5 # License.  See the file "COPYING" in the main directory of this archive
   6 # for more details.
   7 #
   8 # Copyright (C) 1994 by Linus Torvalds
   9 #
  10
  11 NM := nm -B
  12
  13 LINKFLAGS = -static -T arch/alpha/vmlinux.lds #-N -relax
  14 CFLAGS := $(CFLAGS) -pipe -mno-fp-regs -ffixed-8
  15
  16 # Determine if we can use the BWX instructions with GAS.
  17 old_gas := $(shell if $(AS) --version 2>&1 | grep 'version 2.7' > /dev/null; then echo y; else echo n; fi)
  18
  19 # Determine if GCC understands the -mcpu= option.
  20 have_mcpu := $(shell if $(CC) -mcpu=ev5 -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo y; else echo n; fi)
  21
  22 have_mcpu_pca56 := $(shell if $(CC) -mcpu=pca56 -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo y; else echo n; fi)
  23
  24 have_mcpu_ev6 := $(shell if $(CC) -mcpu=ev6 -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo y; else echo n; fi)
  25
  26 # Turn on the proper cpu optimizations.
  27 ifeq ($(have_mcpu),y)
  28   # If GENERIC, make sure to turn off any instruction set extensions that
  29   # the host compiler might have on by default.  Given that EV4 and EV5
  30   # have the same instruction set, prefer EV5 because an EV5 schedule is
  31   # more likely to keep an EV4 processor busy than vice-versa.
  32   ifeq ($(CONFIG_ALPHA_GENERIC),y)
  33     CFLAGS := $(CFLAGS) -mcpu=ev5
  34   endif
  35   ifeq ($(CONFIG_ALPHA_EV4),y)
  36     CFLAGS := $(CFLAGS) -mcpu=ev4
  37   endif
  38   ifeq ($(CONFIG_ALPHA_PYXIS),y)
  39     CFLAGS := $(CFLAGS) -mcpu=ev56
  40   endif
  41   ifeq ($(CONFIG_ALPHA_POLARIS),y)
  42     ifeq ($(have_mcpu_pca56),y)
  43       CFLAGS := $(CFLAGS) -mcpu=pca56
  44     else
  45       CFLAGS := $(CFLAGS) -mcpu=ev56
  46     endif
  47   endif
  48   ifeq ($(CONFIG_ALPHA_EV6),y)
  49     ifeq ($(have_mcpu_ev6),y)
  50       CFLAGS := $(CFLAGS) -mcpu=ev6
  51     else
  52       ifeq ($(have_mcpu_pca56),y)
  53         CFLAGS := $(CFLAGS) -mcpu=pca56
  54       else
  55         CFLAGS := $(CFLAGS) -mcpu=ev56
  56       endif
  57     endif
  58   endif
  59 endif
  60
  61 # For TSUNAMI, we must have the assembler not emulate our instructions.
  62 # The same is true for POLARIS.
  63 # BWX is most important, but we don't really want any emulation ever.
  64 ifeq ($(old_gas),y)
  65  ifneq ($(CONFIG_ALPHA_GENERIC)$(CONFIG_ALPHA_TSUNAMI)$(CONFIG_ALPHA_POLARIS),)
  66    # How do we do #error in make?
  67    CFLAGS := --error-please-upgrade-your-assembler
  68  endif
  69 else
  70  ifeq ($(CONFIG_ALPHA_GENERIC),y)
  71    CFLAGS := $(CFLAGS) -Wa,-mev6
  72  endif
  73  ifeq ($(CONFIG_ALPHA_PYXIS),y)
  74    CFLAGS := $(CFLAGS) -Wa,-m21164a -DBWIO_ENABLED
  75  endif
  76  ifeq ($(CONFIG_ALPHA_POLARIS),y)
  77    CFLAGS := $(CFLAGS) -Wa,-m21164pc
  78  endif
  79  ifeq ($(CONFIG_ALPHA_TSUNAMI),y)
  80    CFLAGS := $(CFLAGS) -Wa,-mev6
  81  endif
  82 endif
  83
  84 HEAD := arch/alpha/kernel/head.o
  85
  86 SUBDIRS := $(SUBDIRS) arch/alpha/kernel arch/alpha/mm arch/alpha/lib \
  87         arch/alpha/math-emu
  88 CORE_FILES := arch/alpha/kernel/kernel.o arch/alpha/mm/mm.o $(CORE_FILES)
  89
  90 ifeq ($(CONFIG_MATHEMU),y)
  91   CORE_FILES := $(CORE_FILES) arch/alpha/math-emu/math-emu.o
  92 endif
  93
  94 LIBS := $(TOPDIR)/arch/alpha/lib/lib.a $(LIBS) $(TOPDIR)/arch/alpha/lib/lib.a
  95
  96 MAKEBOOT = $(MAKE) -C arch/$(ARCH)/boot
  97
  98 rawboot:
  99         @$(MAKEBOOT) rawboot
 100
 101 #
 102 # My boot writes directly to a specific disk partition, I doubt most
 103 # people will want to do that without changes..
 104 #
 105 msb my-special-boot:
 106         @$(MAKEBOOT) msb
 107
 108 bootimage:
 109         @$(MAKEBOOT) bootimage
 110
 111 srmboot:
 112         @$(MAKEBOOT) srmboot
 113
 114 archclean:
 115         @$(MAKE) -C arch/$(ARCH)/kernel clean
 116         @$(MAKEBOOT) clean
 117
 118 archmrproper:
 119
 120 archdep:
 121         @$(MAKEBOOT) dep
 122
 123 bootpfile:
 124         @$(MAKEBOOT) bootpfile