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
8 # Copyright (C) 1994 by Linus Torvalds
13 LDFLAGS_vmlinux := -static -N #-relax
14 CHECK := $(CHECK) -D__alpha__=1
15 cflags-y := -pipe -mno-fp-regs -ffixed-8
17 # Determine if we can use the BWX instructions with GAS.
18 old_gas := $(shell if $(AS) --version 2>&1 | grep 'version 2.7' > /dev/null; then echo y; else echo n; fi)
21 $(error The assembler '$(AS)' does not support the BWX instruction)
24 # Determine if GCC understands the -mcpu= option.
25 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)
27 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)
29 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)
31 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)
33 have_msmall_data := $(shell if $(CC) -msmall-data -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo y; else echo n; fi)
35 cflags-$(have_msmall_data) += -msmall-data
37 # Turn on the proper cpu optimizations.
40 # If GENERIC, make sure to turn off any instruction set extensions that
41 # the host compiler might have on by default. Given that EV4 and EV5
42 # have the same instruction set, prefer EV5 because an EV5 schedule is
43 # more likely to keep an EV4 processor busy than vice-versa.
44 ifeq ($(CONFIG_ALPHA_GENERIC),y)
48 ifeq ($(mcpu_done)$(CONFIG_ALPHA_SX164)$(have_mcpu_pca56),nyy)
52 ifeq ($(mcpu_done)$(CONFIG_ALPHA_POLARIS)$(have_mcpu_pca56),nyy)
56 ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV4),ny)
60 ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV56),ny)
64 ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV5),ny)
68 ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV67)$(have_mcpu_ev67),nyy)
72 ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV6),ny)
73 ifeq ($(have_mcpu_ev6),y)
76 ifeq ($(have_mcpu_pca56),y)
84 cflags-$(mcpu_done) += -mcpu=$(mcpu)
88 # For TSUNAMI, we must have the assembler not emulate our instructions.
89 # The same is true for IRONGATE, POLARIS, PYXIS.
90 # BWX is most important, but we don't really want any emulation ever.
91 CFLAGS += $(cflags-y) -Wa,-mev6
93 head-y := arch/alpha/kernel/head.o
95 core-y += arch/alpha/kernel/ arch/alpha/mm/
96 core-$(CONFIG_MATHEMU) += arch/alpha/math-emu/
97 drivers-$(CONFIG_OPROFILE) += arch/alpha/oprofile/
98 libs-y += arch/alpha/lib/
100 # export what is needed by arch/alpha/boot/Makefile
101 LIBS_Y := $(patsubst %/, %/lib.a, $(libs-y))
104 boot := arch/alpha/boot
106 #Default target when executing make with no arguments
107 all boot: $(boot)/vmlinux.gz
109 $(boot)/vmlinux.gz: vmlinux
110 $(Q)$(MAKE) $(build)=$(boot) $@
112 bootimage bootpfile bootpzfile: vmlinux
113 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
116 prepare: include/asm-$(ARCH)/asm_offsets.h
118 arch/$(ARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
119 include/config/MARKER
121 include/asm-$(ARCH)/asm_offsets.h: arch/$(ARCH)/kernel/asm-offsets.s
122 $(call filechk,gen-asm-offsets)
125 $(Q)$(MAKE) $(clean)=$(boot)
127 CLEAN_FILES += include/asm-$(ARCH)/asm_offsets.h
130 echo '* boot - Compressed kernel image (arch/alpha/boot/vmlinux.gz)'
131 echo ' bootimage - SRM bootable image (arch/alpha/boot/bootimage)'
132 echo ' bootpfile - BOOTP bootable image (arch/alpha/boot/bootpfile)'
133 echo ' bootpzfile - compressed kernel BOOTP image (arch/alpha/boot/bootpzfile)'