1 # BK Id: %F% %I% %G% %U% %#% <<
2 # 1 #
3 # This file is included by the global makefile !! 2 # alpha/Makefile
4 # architecture-specific flags and dependencies <<
5 # 3 #
6 # This file is subject to the terms and condit 4 # This file is subject to the terms and conditions of the GNU General Public
7 # License. See the file "COPYING" in the main 5 # License. See the file "COPYING" in the main directory of this archive
8 # for more details. 6 # for more details.
9 # 7 #
10 # Copyright (C) 1994 by Linus Torvalds 8 # Copyright (C) 1994 by Linus Torvalds
11 # Modifications for the OpenRISC architecture: <<
12 # Copyright (C) 2003 Matjaz Breskvar <phoenix@b <<
13 # Copyright (C) 2010-2011 Jonas Bonn <jonas@sou <<
14 # 9 #
15 # Based on: <<
16 # arch/i386/Makefile <<
17 10
18 KBUILD_DEFCONFIG := or1ksim_defconfig !! 11 NM := $(NM) -B
19 12
20 OBJCOPYFLAGS := -O binary -R .note -R .comm !! 13 LDFLAGS_vmlinux := -static -N #-relax
21 LIBGCC := $(shell $(CC) $(KBUILD_CFLA !! 14 cflags-y := -pipe -mno-fp-regs -ffixed-8
22 15
23 KBUILD_CFLAGS += -pipe -ffixed-r10 -D__linux !! 16 # Determine if we can use the BWX instructions with GAS.
24 KBUILD_CFLAGS += -msfimm -mshftimm !! 17 old_gas := $(shell if $(AS) --version 2>&1 | grep 'version 2.7' > /dev/null; then echo y; else echo n; fi)
25 18
26 all: vmlinux.bin !! 19 ifeq ($(old_gas),y)
27 !! 20 $(error The assembler '$(AS)' does not support the BWX instruction)
28 boot := arch/$(ARCH)/boot !! 21 endif
29 !! 22
30 ifeq ($(CONFIG_OPENRISC_HAVE_INST_MUL),y) !! 23 # Determine if GCC understands the -mcpu= option.
31 KBUILD_CFLAGS += $(call cc-option,-mha !! 24 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)
32 else !! 25
33 KBUILD_CFLAGS += $(call cc-option,-mso !! 26 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)
34 endif !! 27
35 !! 28 have_mcpu_ev6 := $(shell if $(CC) -mcpu=ev6 -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo y; else echo n; fi)
36 ifeq ($(CONFIG_OPENRISC_HAVE_INST_DIV),y) !! 29
37 KBUILD_CFLAGS += $(call cc-option,-mha !! 30 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)
38 else !! 31
39 KBUILD_CFLAGS += $(call cc-option,-mso !! 32 have_msmall_data := $(shell if $(CC) -msmall-data -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo y; else echo n; fi)
40 endif !! 33
41 !! 34 cflags-$(have_msmall_data) += -msmall-data
42 ifeq ($(CONFIG_OPENRISC_HAVE_INST_CMOV),y) !! 35
43 KBUILD_CFLAGS += $(call cc-option,-mcm !! 36 # Turn on the proper cpu optimizations.
44 endif !! 37 ifeq ($(have_mcpu),y)
45 !! 38 mcpu_done := n
46 ifeq ($(CONFIG_OPENRISC_HAVE_INST_ROR),y) !! 39 # If GENERIC, make sure to turn off any instruction set extensions that
47 KBUILD_CFLAGS += $(call cc-option,-mro !! 40 # the host compiler might have on by default. Given that EV4 and EV5
48 endif !! 41 # have the same instruction set, prefer EV5 because an EV5 schedule is
49 !! 42 # more likely to keep an EV4 processor busy than vice-versa.
50 ifeq ($(CONFIG_OPENRISC_HAVE_INST_RORI),y) !! 43 ifeq ($(CONFIG_ALPHA_GENERIC),y)
51 KBUILD_CFLAGS += $(call cc-option,-mro !! 44 mcpu := ev5
52 endif !! 45 mcpu_done := y
53 !! 46 endif
54 ifeq ($(CONFIG_OPENRISC_HAVE_INST_SEXT),y) !! 47 ifeq ($(mcpu_done)$(CONFIG_ALPHA_SX164)$(have_mcpu_pca56),nyy)
55 KBUILD_CFLAGS += $(call cc-option,-mse !! 48 mcpu := pca56
56 endif !! 49 mcpu_done := y
57 !! 50 endif
58 libs-y += $(LIBGCC) !! 51 ifeq ($(mcpu_done)$(CONFIG_ALPHA_POLARIS)$(have_mcpu_pca56),nyy)
59 !! 52 mcpu := pca56
60 PHONY += vmlinux.bin !! 53 mcpu_done := y
61 !! 54 endif
62 vmlinux.bin: vmlinux !! 55 ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV4),ny)
63 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$ !! 56 mcpu := ev4
>> 57 mcpu_done := y
>> 58 endif
>> 59 ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV56),ny)
>> 60 mcpu := ev56
>> 61 mcpu_done := y
>> 62 endif
>> 63 ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV5),ny)
>> 64 mcpu := ev5
>> 65 mcpu_done := y
>> 66 endif
>> 67 ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV67)$(have_mcpu_ev67),nyy)
>> 68 mcpu := ev67
>> 69 mcpu_done := y
>> 70 endif
>> 71 ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV6),ny)
>> 72 ifeq ($(have_mcpu_ev6),y)
>> 73 mcpu := ev6
>> 74 else
>> 75 ifeq ($(have_mcpu_pca56),y)
>> 76 mcpu := pca56
>> 77 else
>> 78 mcpu=ev56
>> 79 endif
>> 80 endif
>> 81 mcpu_done := y
>> 82 endif
>> 83 cflags-$(mcpu_done) += -mcpu=$(mcpu)
>> 84 endif
>> 85
>> 86
>> 87 # For TSUNAMI, we must have the assembler not emulate our instructions.
>> 88 # The same is true for IRONGATE, POLARIS, PYXIS.
>> 89 # BWX is most important, but we don't really want any emulation ever.
>> 90 CFLAGS += $(cflags-y) -Wa,-mev6
>> 91
>> 92 head-y := arch/alpha/kernel/head.o
>> 93
>> 94 core-y += arch/alpha/kernel/ arch/alpha/mm/
>> 95 core-$(CONFIG_MATHEMU) += arch/alpha/math-emu/
>> 96 drivers-$(CONFIG_OPROFILE) += arch/alpha/oprofile/
>> 97 libs-y += arch/alpha/lib/
>> 98
>> 99 # export what is needed by arch/alpha/boot/Makefile
>> 100 LIBS_Y := $(patsubst %/, %/lib.a, $(libs-y))
>> 101 export LIBS_Y
>> 102
>> 103 boot := arch/alpha/boot
>> 104
>> 105 #Default target when executing make with no arguments
>> 106 all boot: $(boot)/vmlinux.gz
>> 107
>> 108 $(boot)/vmlinux.gz: vmlinux
>> 109 $(Q)$(MAKE) -f scripts/Makefile.build obj=$(boot) $@
>> 110
>> 111 bootimage bootpfile bootpzfile: vmlinux
>> 112 $(Q)$(MAKE) -f scripts/Makefile.build obj=$(boot) $(boot)/$@
>> 113
>> 114
>> 115 prepare: include/asm-$(ARCH)/asm_offsets.h
>> 116
>> 117 arch/$(ARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
>> 118 include/config/MARKER
>> 119
>> 120 include/asm-$(ARCH)/asm_offsets.h: arch/$(ARCH)/kernel/asm-offsets.s
>> 121 $(call filechk,gen-asm-offsets)
>> 122
>> 123 archclean:
>> 124 $(Q)$(MAKE) -f scripts/Makefile.clean obj=$(boot)
>> 125
>> 126 CLEAN_FILES += include/asm-$(ARCH)/asm_offsets.h
>> 127
>> 128 define archhelp
>> 129 echo '* boot - Compressed kernel image (arch/alpha/boot/vmlinux.gz)'
>> 130 echo ' bootimage - SRM bootable image (arch/alpha/boot/bootimage)'
>> 131 echo ' bootpfile - BOOTP bootable image (arch/alpha/boot/bootpfile)'
>> 132 echo ' bootpzfile - compressed kernel BOOTP image (arch/alpha/boot/bootpzfile)'
>> 133 endef
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