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
11NM := $(NM) -B
12
13LINKFLAGS = -static -T arch/alpha/vmlinux.lds -N #-relax
14CFLAGS := $(CFLAGS) -pipe -mno-fp-regs -ffixed-8
15
16# Determine if we can use the BWX instructions with GAS.
17old_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.
20have_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
22have_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
24have_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
26have_mcpu_ev67 := $(shell if $(CC) -mcpu=ev67 -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo y; else echo n; fi)
27
28# Turn on the proper cpu optimizations.
29ifeq ($(have_mcpu),y)
30  # If GENERIC, make sure to turn off any instruction set extensions that
31  # the host compiler might have on by default.  Given that EV4 and EV5
32  # have the same instruction set, prefer EV5 because an EV5 schedule is
33  # more likely to keep an EV4 processor busy than vice-versa.
34  mcpu_done := n
35  ifeq ($(CONFIG_ALPHA_GENERIC),y)
36    CFLAGS := $(CFLAGS) -mcpu=ev5
37    mcpu_done := y
38  endif
39  ifeq ($(mcpu_done)$(CONFIG_ALPHA_SX164)$(have_mcpu_pca56),nyy)
40    CFLAGS := $(CFLAGS) -mcpu=pca56
41    mcpu_done := y
42  endif
43  ifeq ($(mcpu_done)$(CONFIG_ALPHA_POLARIS)$(have_mcpu_pca56),nyy)
44    CFLAGS := $(CFLAGS) -mcpu=pca56
45    mcpu_done := y
46  endif
47  ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV4),ny)
48    CFLAGS := $(CFLAGS) -mcpu=ev4
49    mcpu_done := y
50  endif
51  ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV56),ny)
52    CFLAGS := $(CFLAGS) -mcpu=ev56
53    mcpu_done := y
54  endif
55  ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV5),ny)
56    CFLAGS := $(CFLAGS) -mcpu=ev5
57    mcpu_done := y
58  endif
59  ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV67)$(have_mcpu_ev67),nyy)
60    CFLAGS := $(CFLAGS) -mcpu=ev67
61    mcpu_done := y
62  endif
63  ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV6),ny)
64    ifeq ($(have_mcpu_ev6),y)
65      CFLAGS := $(CFLAGS) -mcpu=ev6
66    else
67      ifeq ($(have_mcpu_pca56),y)
68        CFLAGS := $(CFLAGS) -mcpu=pca56
69      else
70        CFLAGS := $(CFLAGS) -mcpu=ev56
71      endif
72    endif
73    mcpu_done := y
74  endif
75endif
76
77# For TSUNAMI, we must have the assembler not emulate our instructions.
78# The same is true for IRONGATE, POLARIS, PYXIS.
79# BWX is most important, but we don't really want any emulation ever.
80
81ifeq ($(old_gas),y)
82  # How do we do #error in make?
83  CFLAGS := --error-please-upgrade-your-assembler
84endif
85CFLAGS := $(CFLAGS) -Wa,-mev6
86
87HEAD := arch/alpha/kernel/head.o
88
89SUBDIRS := $(SUBDIRS) arch/alpha/kernel arch/alpha/mm arch/alpha/lib \
90	arch/alpha/math-emu
91CORE_FILES := arch/alpha/kernel/kernel.o arch/alpha/mm/mm.o $(CORE_FILES)
92
93ifeq ($(CONFIG_MATHEMU),y)
94  CORE_FILES := $(CORE_FILES) arch/alpha/math-emu/math-emu.o
95endif
96
97LIBS := $(TOPDIR)/arch/alpha/lib/lib.a $(LIBS) $(TOPDIR)/arch/alpha/lib/lib.a
98
99MAKEBOOT = $(MAKE) -C arch/alpha/boot
100
101rawboot:
102	@$(MAKEBOOT) rawboot
103
104#
105# My boot writes directly to a specific disk partition, I doubt most
106# people will want to do that without changes..
107#
108msb my-special-boot:
109	@$(MAKEBOOT) msb
110
111bootimage:
112	@$(MAKEBOOT) bootimage
113
114srmboot:
115	@$(MAKEBOOT) srmboot
116
117archclean:
118	@$(MAKE) -C arch/alpha/kernel clean
119	@$(MAKEBOOT) clean
120	rm -f arch/alpha/vmlinux.lds
121
122archmrproper:
123
124archdep:
125	@$(MAKEBOOT) dep
126
127vmlinux: arch/alpha/vmlinux.lds
128
129arch/alpha/vmlinux.lds: arch/alpha/vmlinux.lds.in
130	$(CPP) $(CPPFLAGS) -xc -P arch/alpha/vmlinux.lds.in -o arch/alpha/vmlinux.lds
131
132bootpfile:
133	@$(MAKEBOOT) bootpfile
134
135bootpzfile:
136	@$(MAKEBOOT) bootpzfile
137