1 # 1 #
>> 2 # alpha/Makefile
>> 3 #
2 # This file is subject to the terms and condit 4 # This file is subject to the terms and conditions of the GNU General Public
3 # License. See the file "COPYING" in the main 5 # License. See the file "COPYING" in the main directory of this archive
4 # for more details. 6 # for more details.
5 # 7 #
6 # Copyright (C) 2013 Altera Corporation !! 8 # Copyright (C) 1994 by Linus Torvalds
7 # Copyright (C) 1994, 95, 96, 2003 by Wind Riv <<
8 # Written by Fredrik Markstrom <<
9 # <<
10 # This file is included by the global makefile <<
11 # architecture-specific flags and dependencies <<
12 # 9 #
13 # Nios2 port by Wind River Systems Inc trough: <<
14 # fredrik.markstrom@gmail.com and ivarholmqv <<
15 <<
16 KBUILD_DEFCONFIG := 3c120_defconfig <<
17 <<
18 UTS_SYSNAME = Linux <<
19 <<
20 export MMU <<
21 <<
22 LIBGCC := $(shell $(CC) $(KBUILD_CFLAG <<
23 <<
24 KBUILD_AFLAGS += -march=r$(CONFIG_NIOS2_ARCH_R <<
25 10
26 KBUILD_CFLAGS += -pipe -D__linux__ -D__ELF__ !! 11 NM := $(NM) -B
27 KBUILD_CFLAGS += -march=r$(CONFIG_NIOS2_ARCH_R <<
28 KBUILD_CFLAGS += $(if $(CONFIG_NIOS2_HW_MUL_SU <<
29 KBUILD_CFLAGS += $(if $(CONFIG_NIOS2_HW_MULX_S <<
30 KBUILD_CFLAGS += $(if $(CONFIG_NIOS2_HW_DIV_SU <<
31 KBUILD_CFLAGS += $(if $(CONFIG_NIOS2_BMX_SUPPO <<
32 KBUILD_CFLAGS += $(if $(CONFIG_NIOS2_CDX_SUPPO <<
33 KBUILD_CFLAGS += $(if $(CONFIG_NIOS2_FPU_SUPPO <<
34 12
35 KBUILD_CFLAGS += -fno-optimize-sibling-calls !! 13 LDFLAGS_vmlinux := -static -N #-relax
36 KBUILD_CFLAGS += -DUTS_SYSNAME=\"$(UTS_SYSNAME !! 14 cflags-y := -pipe -mno-fp-regs -ffixed-8
37 KBUILD_CFLAGS += -fno-builtin <<
38 KBUILD_CFLAGS += -G 0 <<
39 15
40 libs-y += arch/nios2/lib/ $(LIBGCC) !! 16 # Determine if we can use the BWX instructions with GAS.
>> 17 old_gas := $(shell if $(AS) --version 2>&1 | grep 'version 2.7' > /dev/null; then echo y; else echo n; fi)
41 18
42 INSTALL_PATH ?= /tftpboot !! 19 ifeq ($(old_gas),y)
43 nios2-boot := arch/$(ARCH)/boot !! 20 $(error The assembler '$(AS)' does not support the BWX instruction)
44 BOOT_TARGETS = vmImage zImage !! 21 endif
45 PHONY += $(BOOT_TARGETS) install !! 22
46 KBUILD_IMAGE := $(nios2-boot)/vmImage !! 23 # Determine if GCC understands the -mcpu= option.
>> 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)
>> 25
>> 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)
>> 27
>> 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)
>> 29
>> 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)
>> 31
>> 32 have_msmall_data := $(shell if $(CC) -msmall-data -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo y; else echo n; fi)
>> 33
>> 34 cflags-$(have_msmall_data) += -msmall-data
>> 35
>> 36 # Turn on the proper cpu optimizations.
>> 37 ifeq ($(have_mcpu),y)
>> 38 mcpu_done := n
>> 39 # If GENERIC, make sure to turn off any instruction set extensions that
>> 40 # the host compiler might have on by default. Given that EV4 and EV5
>> 41 # have the same instruction set, prefer EV5 because an EV5 schedule is
>> 42 # more likely to keep an EV4 processor busy than vice-versa.
>> 43 ifeq ($(CONFIG_ALPHA_GENERIC),y)
>> 44 mcpu := ev5
>> 45 mcpu_done := y
>> 46 endif
>> 47 ifeq ($(mcpu_done)$(CONFIG_ALPHA_SX164)$(have_mcpu_pca56),nyy)
>> 48 mcpu := pca56
>> 49 mcpu_done := y
>> 50 endif
>> 51 ifeq ($(mcpu_done)$(CONFIG_ALPHA_POLARIS)$(have_mcpu_pca56),nyy)
>> 52 mcpu := pca56
>> 53 mcpu_done := y
>> 54 endif
>> 55 ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV4),ny)
>> 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
47 119
48 all: vmImage !! 120 include/asm-$(ARCH)/asm_offsets.h: arch/$(ARCH)/kernel/asm-offsets.s
>> 121 $(call filechk,gen-asm-offsets)
49 122
50 $(BOOT_TARGETS): vmlinux !! 123 archclean:
51 $(Q)$(MAKE) $(build)=$(nios2-boot) $(n !! 124 $(Q)$(MAKE) -f scripts/Makefile.clean obj=$(boot)
52 125
53 install: !! 126 CLEAN_FILES += include/asm-$(ARCH)/asm_offsets.h
54 $(call cmd,install) <<
55 127
56 define archhelp 128 define archhelp
57 echo '* vmImage - Kernel-only image !! 129 echo '* boot - Compressed kernel image (arch/alpha/boot/vmlinux.gz)'
58 echo ' install - Install kernel us !! 130 echo ' bootimage - SRM bootable image (arch/alpha/boot/bootimage)'
59 echo ' (your) ~/bin/$(I !! 131 echo ' bootpfile - BOOTP bootable image (arch/alpha/boot/bootpfile)'
60 echo ' (distribution) / !! 132 echo ' bootpzfile - compressed kernel BOOTP image (arch/alpha/boot/bootpzfile)'
61 echo ' install to $$(IN <<
62 endef 133 endef
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