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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
LDFLAGS_vmlinux := -static -N #-relax
CHECKFLAGS += -D__alpha__ -m64
cflags-y := -pipe -mno-fp-regs -ffixed-8
# Determine if we can use the BWX instructions with GAS.
old_gas := $(shell if $(AS) --version 2>&1 | grep 'version 2.7' > /dev/null; then echo y; else echo n; fi)
ifeq ($(old_gas),y)
$(error The assembler '$(AS)' does not support the BWX instruction)
endif
# Determine if GCC understands the -mcpu= option.
have_mcpu := $(call cc-option-yn, -mcpu=ev5)
have_mcpu_pca56 := $(call cc-option-yn, -mcpu=pca56)
have_mcpu_ev6 := $(call cc-option-yn, -mcpu=ev6)
have_mcpu_ev67 := $(call cc-option-yn, -mcpu=ev67)
have_msmall_data := $(call cc-option-yn, -msmall-data)
cflags-$(have_msmall_data) += -msmall-data
# Turn on the proper cpu optimizations.
ifeq ($(have_mcpu),y)
mcpu_done := n
# If GENERIC, make sure to turn off any instruction set extensions that
# the host compiler might have on by default. Given that EV4 and EV5
# have the same instruction set, prefer EV5 because an EV5 schedule is
# more likely to keep an EV4 processor busy than vice-versa.
ifeq ($(CONFIG_ALPHA_GENERIC),y)
mcpu := ev5
mcpu_done := y
endif
ifeq ($(mcpu_done)$(CONFIG_ALPHA_SX164)$(have_mcpu_pca56),nyy)
mcpu := pca56
mcpu_done := y
endif
ifeq ($(mcpu_done)$(CONFIG_ALPHA_POLARIS)$(have_mcpu_pca56),nyy)
mcpu := pca56
mcpu_done := y
endif
ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV4),ny)
mcpu := ev4
mcpu_done := y
endif
ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV56),ny)
mcpu := ev56
mcpu_done := y
endif
ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV5),ny)
mcpu := ev5
mcpu_done := y
endif
ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV67)$(have_mcpu_ev67),nyy)
mcpu := ev67
mcpu_done := y
endif
ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV6),ny)
ifeq ($(have_mcpu_ev6),y)
mcpu := ev6
else
ifeq ($(have_mcpu_pca56),y)
mcpu := pca56
else
mcpu=ev56
endif
endif
mcpu_done := y
endif
cflags-$(mcpu_done) += -mcpu=$(mcpu)
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.
CFLAGS += $(cflags-y) -Wa,-mev6
head-y := arch/alpha/kernel/head.o
core-y += arch/alpha/kernel/ arch/alpha/mm/
core-$(CONFIG_MATHEMU) += arch/alpha/math-emu/
drivers-$(CONFIG_OPROFILE) += arch/alpha/oprofile/
libs-y += arch/alpha/lib/
# export what is needed by arch/alpha/boot/Makefile
LIBS_Y := $(patsubst %/, %/lib.a, $(libs-y))
export LIBS_Y
boot := arch/alpha/boot
#Default target when executing make with no arguments
all boot: $(boot)/vmlinux.gz
$(boot)/vmlinux.gz: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $@
bootimage bootpfile bootpzfile: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
prepare: include/asm-$(ARCH)/asm_offsets.h
arch/$(ARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
include/config/MARKER
include/asm-$(ARCH)/asm_offsets.h: arch/$(ARCH)/kernel/asm-offsets.s
$(call filechk,gen-asm-offsets)
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
CLEAN_FILES += include/asm-$(ARCH)/asm_offsets.h
define archhelp
echo '* boot - Compressed kernel image (arch/alpha/boot/vmlinux.gz)'
echo ' bootimage - SRM bootable image (arch/alpha/boot/bootimage)'
echo ' bootpfile - BOOTP bootable image (arch/alpha/boot/bootpfile)'
echo ' bootpzfile - compressed kernel BOOTP image (arch/alpha/boot/bootpzfile)'
endef
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