1 # SPDX-License-Identifier: GPL-2.0
2 #
3 # Author: Huacai Chen <chenhuacai@loongson.cn>
4 # Copyright (C) 2020-2022 Loongson Technology
5
6 boot := arch/loongarch/boot
7
8 KBUILD_DEFCONFIG := loongson3_defconfig
9 KBUILD_DTBS := dtbs
10
11 image-name-y := vmlinux
12 image-name-$(CONFIG_EFI_ZBOOT) := vmlinuz
13
14 ifndef CONFIG_EFI_STUB
15 KBUILD_IMAGE := $(boot)/vmlinux.elf
16 else
17 KBUILD_IMAGE := $(boot)/$(image-name-y).efi
18 endif
19
20 #
21 # Select the object file format to substitute
22 #
23 64bit-tool-archpref = loongarch64
24 32bit-bfd = elf32-loongarch
25 64bit-bfd = elf64-loongarch
26 32bit-emul = elf32loongarch
27 64bit-emul = elf64loongarch
28
29 CC_FLAGS_FPU := -mfpu=64
30 CC_FLAGS_NO_FPU := -msoft-float
31
32 ifdef CONFIG_UNWINDER_ORC
33 orc_hash_h := arch/$(SRCARCH)/include/generate
34 orc_hash_sh := $(srctree)/scripts/orc_hash.sh
35 targets += $(orc_hash_h)
36 quiet_cmd_orc_hash = GEN $@
37 cmd_orc_hash = mkdir -p $(dir $@); \
38 $(CONFIG_SHELL) $(orc_has
39 $(orc_hash_h): $(srctree)/arch/loongarch/inclu
40 $(call if_changed,orc_hash)
41 archprepare: $(orc_hash_h)
42 endif
43
44 ifdef CONFIG_DYNAMIC_FTRACE
45 KBUILD_CPPFLAGS += -DCC_USING_PATCHABLE_FUNCTI
46 CC_FLAGS_FTRACE := -fpatchable-function-entry=
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
184 define archhelp
185 echo ' install - install
186 echo
187 endef
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