1 # SPDX-License-Identifier: GPL-2.0 <<
2 # 1 #
3 # Author: Huacai Chen <chenhuacai@loongson.cn> !! 2 # alpha/Makefile
4 # Copyright (C) 2020-2022 Loongson Technology !! 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 #
5 10
6 boot := arch/loongarch/boot !! 11 NM := $(NM) -B
7 12
8 KBUILD_DEFCONFIG := loongson3_defconfig !! 13 LDFLAGS_vmlinux := -static -N #-relax
9 KBUILD_DTBS := dtbs !! 14 CHECKFLAGS += -D__alpha__
>> 15 cflags-y := -pipe -mno-fp-regs -ffixed-8
>> 16 cflags-y += $(call cc-option, -fno-jump-tables)
10 17
11 image-name-y := vmlinux !! 18 cpuflags-$(CONFIG_ALPHA_EV56) := -mcpu=ev56
12 image-name-$(CONFIG_EFI_ZBOOT) := vmlinuz !! 19 cpuflags-$(CONFIG_ALPHA_POLARIS) := -mcpu=pca56
13 !! 20 cpuflags-$(CONFIG_ALPHA_SX164) := -mcpu=pca56
14 ifndef CONFIG_EFI_STUB !! 21 cpuflags-$(CONFIG_ALPHA_EV6) := -mcpu=ev6
15 KBUILD_IMAGE := $(boot)/vmlinux.elf !! 22 cpuflags-$(CONFIG_ALPHA_EV67) := -mcpu=ev67
16 else !! 23 # If GENERIC, make sure to turn off any instruction set extensions that
17 KBUILD_IMAGE := $(boot)/$(image-name-y).efi !! 24 # the host compiler might have on by default.
18 endif !! 25 cpuflags-$(CONFIG_ALPHA_GENERIC) := -mcpu=ev56 -mtune=ev6
19 26
20 # !! 27 cflags-y += $(cpuflags-y)
21 # Select the object file format to substitute !! 28
22 # !! 29
23 64bit-tool-archpref = loongarch64 !! 30 # For TSUNAMI, we must have the assembler not emulate our instructions.
24 32bit-bfd = elf32-loongarch !! 31 # The same is true for IRONGATE, POLARIS, PYXIS.
25 64bit-bfd = elf64-loongarch !! 32 # BWX is most important, but we don't really want any emulation ever.
26 32bit-emul = elf32loongarch !! 33 KBUILD_CFLAGS += $(cflags-y) -Wa,-mev6
27 64bit-emul = elf64loongarch !! 34
28 !! 35 libs-y += arch/alpha/lib/
29 CC_FLAGS_FPU := -mfpu=64 !! 36
30 CC_FLAGS_NO_FPU := -msoft-float !! 37 # export what is needed by arch/alpha/boot/Makefile
31 !! 38 LIBS_Y := $(patsubst %/, %/lib.a, $(libs-y))
32 ifdef CONFIG_UNWINDER_ORC !! 39 export LIBS_Y
33 orc_hash_h := arch/$(SRCARCH)/include/generate !! 40
34 orc_hash_sh := $(srctree)/scripts/orc_hash.sh !! 41 boot := arch/alpha/boot
35 targets += $(orc_hash_h) !! 42
36 quiet_cmd_orc_hash = GEN $@ !! 43 #Default target when executing make with no arguments
37 cmd_orc_hash = mkdir -p $(dir $@); \ !! 44 all boot: $(boot)/vmlinux.gz
38 $(CONFIG_SHELL) $(orc_has !! 45
39 $(orc_hash_h): $(srctree)/arch/loongarch/inclu !! 46 $(boot)/vmlinux.gz: vmlinux
40 $(call if_changed,orc_hash) !! 47 $(Q)$(MAKE) $(build)=$(boot) $@
41 archprepare: $(orc_hash_h) !! 48
42 endif !! 49 bootimage bootpfile bootpzfile: vmlinux
43 !! 50 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
44 ifdef CONFIG_DYNAMIC_FTRACE !! 51
45 KBUILD_CPPFLAGS += -DCC_USING_PATCHABLE_FUNCTI !! 52 archheaders:
46 CC_FLAGS_FTRACE := -fpatchable-function-entry= !! 53 $(Q)$(MAKE) $(build)=arch/alpha/kernel/syscalls all
47 endif <<
48 <<
49 ifdef CONFIG_64BIT <<
50 tool-archpref = $(64bit-tool-archpre <<
51 UTS_MACHINE := loongarch64 <<
52 endif <<
53 <<
54 ifneq ($(SUBARCH),$(ARCH)) <<
55 ifeq ($(CROSS_COMPILE),) <<
56 CROSS_COMPILE := $(call cc-cross-prefix, $ <<
57 endif <<
58 endif <<
59 <<
60 ifdef CONFIG_64BIT <<
61 ld-emul = $(64bit-emul) <<
62 cflags-y += -mabi=lp64s <<
63 endif <<
64 <<
65 cflags-y += -pipe $(CC_ <<
66 LDFLAGS_vmlinux += -static -n <<
67 <<
68 # When the assembler supports explicit relocat <<
69 # GCC may have -mexplicit-relocs off by defaul <<
70 # assembler, so we force it via an option. <<
71 # <<
72 # When the assembler does not supports explici <<
73 # it. Disable it if the compiler supports it. <<
74 # <<
75 # The combination of a "new" assembler and "ol <<
76 # the rarity of this combo and the extra compl <<
77 # Either upgrade the compiler or downgrade the <<
78 # out if it is the case (by probing for the mo <<
79 # compilers in this case would have support). <<
80 # <<
81 # Also, -mdirect-extern-access is useful in ca <<
82 # relocs, for avoiding unnecessary GOT accesse <<
83 # support though. <<
84 ifdef CONFIG_AS_HAS_EXPLICIT_RELOCS <<
85 cflags-y += $(call cc-o <<
86 KBUILD_CFLAGS_KERNEL += $(call cc-o <<
87 KBUILD_CFLAGS_KERNEL += $(call cc-o <<
88 KBUILD_AFLAGS_MODULE += $(call cc-o <<
89 KBUILD_CFLAGS_MODULE += $(call cc-o <<
90 else <<
91 cflags-y += $(call cc-o <<
92 KBUILD_AFLAGS_KERNEL += -Wa,-mla-gl <<
93 KBUILD_CFLAGS_KERNEL += -Wa,-mla-gl <<
94 KBUILD_AFLAGS_MODULE += -Wa,-mla-gl <<
95 KBUILD_CFLAGS_MODULE += -fplt -Wa,- <<
96 endif <<
97 <<
98 KBUILD_AFLAGS += $(call cc-o <<
99 KBUILD_CFLAGS += $(call cc-o <<
100 KBUILD_AFLAGS += $(call cc-o <<
101 KBUILD_CFLAGS += $(call cc-o <<
102 <<
103 ifdef CONFIG_OBJTOOL <<
104 KBUILD_CFLAGS += -fno-jump-t <<
105 endif <<
106 <<
107 KBUILD_RUSTFLAGS += --target=lo <<
108 KBUILD_RUSTFLAGS_KERNEL += -Zdirect-ac <<
109 KBUILD_RUSTFLAGS_MODULE += -Zdirect-ac <<
110 <<
111 ifeq ($(CONFIG_RELOCATABLE),y) <<
112 KBUILD_CFLAGS_KERNEL += -fPIE <<
113 KBUILD_RUSTFLAGS_KERNEL += -Crelocatio <<
114 LDFLAGS_vmlinux += -static -pi <<
115 endif <<
116 <<
117 cflags-y += $(call cc-option, -mno-check-zero- <<
118 <<
119 ifndef CONFIG_KASAN <<
120 cflags-y += -fno-builtin-memcpy -fno-builtin-m <<
121 endif <<
122 <<
123 load-y = 0x9000000000200000 <<
124 bootvars-y = VMLINUX_LOAD_ADDRESS=$(load- <<
125 <<
126 drivers-$(CONFIG_PCI) += arch/loonga <<
127 <<
128 KBUILD_AFLAGS += $(cflags-y) <<
129 KBUILD_CFLAGS += $(cflags-y) <<
130 KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(lo <<
131 <<
132 # This is required to get dwarf unwinding tabl <<
133 # instead of .eh_frame so we don't discard the <<
134 KBUILD_CFLAGS += -fno-asynchronous-unwind-tabl <<
135 <<
136 ifdef CONFIG_ARCH_STRICT_ALIGN <<
137 # Don't emit unaligned accesses. <<
138 # Not all LoongArch cores support unaligned ac <<
139 # rely on others to provide emulation for thes <<
140 KBUILD_CFLAGS += $(call cc-option,-mstrict-ali <<
141 else <<
142 # Optimise for performance on hardware support <<
143 KBUILD_CFLAGS += $(call cc-option,-mno-strict- <<
144 endif <<
145 <<
146 KBUILD_CFLAGS += -isystem $(shell $(CC) -print <<
147 <<
148 KBUILD_LDFLAGS += -m $(ld-emul) <<
149 <<
150 ifdef need-compiler <<
151 CHECKFLAGS += $(shell $(CC) $(KBUILD_CPPFLAGS) <<
152 grep -E -vw '__GNUC_(MINOR_|PATCHLEVEL <<
153 sed -e "s/^\#define /-D'/" -e "s/ /'=' <<
154 endif <<
155 <<
156 libs-y += arch/loongarch/lib/ <<
157 libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/ <<
158 <<
159 drivers-y += arch/loongarch/cryp <<
160 <<
161 # suspend and hibernation support <<
162 drivers-$(CONFIG_PM) += arch/loongarch/powe <<
163 <<
164 ifeq ($(KBUILD_EXTMOD),) <<
165 prepare: vdso_prepare <<
166 vdso_prepare: prepare0 <<
167 $(Q)$(MAKE) $(build)=arch/loongarch/vd <<
168 endif <<
169 <<
170 vdso-install-y += arch/loongarch/vdso/vdso.so. <<
171 <<
172 all: $(notdir $(KBUILD_IMAGE)) $(KBUILD_DTB <<
173 <<
174 vmlinuz.efi: vmlinux.efi <<
175 <<
176 vmlinux.elf vmlinux.efi vmlinuz.efi: vmlinux <<
177 $(Q)$(MAKE) $(build)=$(boot) $(bootvar <<
178 <<
179 install: <<
180 $(Q)install -D -m 755 $(KBUILD_IMAGE) <<
181 $(Q)install -D -m 644 .config $(INSTAL <<
182 $(Q)install -D -m 644 System.map $(INS <<
183 54
184 define archhelp 55 define archhelp
185 echo ' install - install !! 56 echo '* boot - Compressed kernel image (arch/alpha/boot/vmlinux.gz)'
186 echo !! 57 echo ' bootimage - SRM bootable image (arch/alpha/boot/bootimage)'
>> 58 echo ' bootpfile - BOOTP bootable image (arch/alpha/boot/bootpfile)'
>> 59 echo ' bootpzfile - compressed kernel BOOTP image (arch/alpha/boot/bootpzfile)'
187 endef 60 endef
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