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#

# alpha/Makefile

#

# This file is subject to the terms and conditions of the GNU General Public

# License.  See the file "COPYING" in the main directory of this archive

# for more details.

#

# Copyright (C) 1994 by Linus Torvalds

#

NM := $(NM) -B

LINKFLAGS = -static -T arch/alpha/vmlinux.lds -N #-relax

CFLAGS := $(CFLAGS) -pipe -mno-fp-regs -ffixed-8

# Determine if we can use the BWX instructions with GAS.

old_gas := $(shell if $(AS) --version 2>&1 | grep 'version 2.7' > /dev/null; then echo y; else echo n; fi)

# Determine if GCC understands the -mcpu= option.

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)

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)

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)

have_mcpu_ev67 := $(shell if $(CC) -mcpu=ev67 -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo y; else echo n; fi)

# Turn on the proper cpu optimizations.

ifeq ($(have_mcpu),y)

  # If GENERIC, make sure to turn off any instruction set extensions that

  # the host compiler might have on by default.  Given that EV4 and EV5

  # have the same instruction set, prefer EV5 because an EV5 schedule is

  # more likely to keep an EV4 processor busy than vice-versa.

  mcpu_done := n

  ifeq ($(CONFIG_ALPHA_GENERIC),y)

    CFLAGS := $(CFLAGS) -mcpu=ev5

    mcpu_done := y

  endif

  ifeq ($(mcpu_done)$(CONFIG_ALPHA_SX164)$(have_mcpu_pca56),nyy)

    CFLAGS := $(CFLAGS) -mcpu=pca56

    mcpu_done := y

  endif

  ifeq ($(mcpu_done)$(CONFIG_ALPHA_POLARIS)$(have_mcpu_pca56),nyy)

    CFLAGS := $(CFLAGS) -mcpu=pca56

    mcpu_done := y

  endif

  ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV4),ny)

    CFLAGS := $(CFLAGS) -mcpu=ev4

    mcpu_done := y

  endif

  ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV56),ny)

    CFLAGS := $(CFLAGS) -mcpu=ev56

    mcpu_done := y

  endif

  ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV5),ny)

    CFLAGS := $(CFLAGS) -mcpu=ev5

    mcpu_done := y

  endif

  ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV67)$(have_mcpu_ev67),nyy)

    CFLAGS := $(CFLAGS) -mcpu=ev67

    mcpu_done := y

  endif

  ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV6),ny)

    ifeq ($(have_mcpu_ev6),y)

      CFLAGS := $(CFLAGS) -mcpu=ev6

    else

      ifeq ($(have_mcpu_pca56),y)

        CFLAGS := $(CFLAGS) -mcpu=pca56

      else

        CFLAGS := $(CFLAGS) -mcpu=ev56

      endif

    endif

    mcpu_done := y

  endif

endif

# For TSUNAMI, we must have the assembler not emulate our instructions.

# The same is true for IRONGATE, POLARIS, PYXIS.

# BWX is most important, but we don't really want any emulation ever.

ifeq ($(old_gas),y)

  # How do we do #error in make?

  CFLAGS := --error-please-upgrade-your-assembler

endif

CFLAGS := $(CFLAGS) -Wa,-mev6

HEAD := arch/alpha/kernel/head.o

SUBDIRS := $(SUBDIRS) arch/alpha/kernel arch/alpha/mm arch/alpha/lib \

        arch/alpha/math-emu

CORE_FILES := arch/alpha/kernel/kernel.o arch/alpha/mm/mm.o $(CORE_FILES)

ifeq ($(CONFIG_MATHEMU),y)

  CORE_FILES := $(CORE_FILES) arch/alpha/math-emu/math-emu.o

endif

LIBS := $(TOPDIR)/arch/alpha/lib/lib.a $(LIBS) $(TOPDIR)/arch/alpha/lib/lib.a

MAKEBOOT = $(MAKE) -C arch/alpha/boot

rawboot:

        @$(MAKEBOOT) rawboot

#

# My boot writes directly to a specific disk partition, I doubt most

# people will want to do that without changes..

#

msb my-special-boot:

        @$(MAKEBOOT) msb

bootimage:

        @$(MAKEBOOT) bootimage

srmboot:

        @$(MAKEBOOT) srmboot

archclean:

        @$(MAKE) -C arch/alpha/kernel clean

        @$(MAKEBOOT) clean

        rm -f arch/alpha/vmlinux.lds

archmrproper:

archdep:

        @$(MAKEBOOT) dep

vmlinux: arch/alpha/vmlinux.lds

arch/alpha/vmlinux.lds: arch/alpha/vmlinux.lds.in

        $(CPP) $(CPPFLAGS) -xc -P arch/alpha/vmlinux.lds.in -o arch/alpha/vmlinux.lds

bootpfile:

        @$(MAKEBOOT) bootpfile

bootpzfile:

        @$(MAKEBOOT) bootpzfile