1 # SPDX-License-Identifier: GPL-2.0 <<
2 # 1 #
3 # Author: Huacai Chen <chenhuacai@loongson.cn> !! 2 # sparc/Makefile
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 # 3 #
21 # Select the object file format to substitute !! 4 # Makefile for the architecture dependent flags and dependencies on the
>> 5 # Sparc and sparc64.
22 # 6 #
23 64bit-tool-archpref = loongarch64 !! 7 # Copyright (C) 1994,1996,1998 David S. Miller (davem@caip.rutgers.edu)
24 32bit-bfd = elf32-loongarch !! 8 # Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
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 9
49 ifdef CONFIG_64BIT !! 10 # We are not yet configured - so test on arch
50 tool-archpref = $(64bit-tool-archpre !! 11 ifeq ($(ARCH),sparc)
51 UTS_MACHINE := loongarch64 !! 12 KBUILD_DEFCONFIG := sparc32_defconfig
>> 13 else
>> 14 KBUILD_DEFCONFIG := sparc64_defconfig
52 endif 15 endif
53 16
54 ifneq ($(SUBARCH),$(ARCH)) !! 17 ifeq ($(CONFIG_SPARC32),y)
55 ifeq ($(CROSS_COMPILE),) !! 18 #####
56 CROSS_COMPILE := $(call cc-cross-prefix, $ !! 19 # sparc32
57 endif !! 20 #
58 endif <<
59 21
60 ifdef CONFIG_64BIT !! 22 CHECKFLAGS += -D__sparc__
61 ld-emul = $(64bit-emul) !! 23 LDFLAGS := -m elf32_sparc
62 cflags-y += -mabi=lp64s !! 24 export BITS := 32
63 endif !! 25 UTS_MACHINE := sparc
64 26
65 cflags-y += -pipe $(CC_ !! 27 KBUILD_CFLAGS += -m32 -mcpu=v8 -pipe -mno-fpu -fcall-used-g5 -fcall-used-g7
66 LDFLAGS_vmlinux += -static -n !! 28 KBUILD_AFLAGS += -m32 -Wa,-Av8
67 29
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 30 else
91 cflags-y += $(call cc-o !! 31 #####
92 KBUILD_AFLAGS_KERNEL += -Wa,-mla-gl !! 32 # sparc64
93 KBUILD_CFLAGS_KERNEL += -Wa,-mla-gl !! 33 #
94 KBUILD_AFLAGS_MODULE += -Wa,-mla-gl <<
95 KBUILD_CFLAGS_MODULE += -fplt -Wa,- <<
96 endif <<
97 34
98 KBUILD_AFLAGS += $(call cc-o !! 35 CHECKFLAGS += -D__sparc__ -D__sparc_v9__ -D__arch64__ -m64
99 KBUILD_CFLAGS += $(call cc-o !! 36 LDFLAGS := -m elf64_sparc
100 KBUILD_AFLAGS += $(call cc-o !! 37 export BITS := 64
101 KBUILD_CFLAGS += $(call cc-o !! 38 UTS_MACHINE := sparc64
102 39
103 ifdef CONFIG_OBJTOOL !! 40 KBUILD_CFLAGS += -m64 -pipe -mno-fpu -mcpu=ultrasparc -mcmodel=medlow
104 KBUILD_CFLAGS += -fno-jump-t !! 41 KBUILD_CFLAGS += -ffixed-g4 -ffixed-g5 -fcall-used-g7 -Wno-sign-compare
105 endif !! 42 KBUILD_CFLAGS += -Wa,--undeclared-regs
>> 43 KBUILD_CFLAGS += $(call cc-option,-mtune=ultrasparc3)
>> 44 KBUILD_AFLAGS += -m64 -mcpu=ultrasparc -Wa,--undeclared-regs
106 45
107 KBUILD_RUSTFLAGS += --target=lo !! 46 ifeq ($(CONFIG_MCOUNT),y)
108 KBUILD_RUSTFLAGS_KERNEL += -Zdirect-ac !! 47 KBUILD_CFLAGS += -pg
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 48 endif
116 49
117 cflags-y += $(call cc-option, -mno-check-zero- <<
118 <<
119 ifndef CONFIG_KASAN <<
120 cflags-y += -fno-builtin-memcpy -fno-builtin-m <<
121 endif 50 endif
122 51
123 load-y = 0x9000000000200000 !! 52 head-y := arch/sparc/kernel/head_$(BITS).o
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 53
150 ifdef need-compiler !! 54 # See arch/sparc/Kbuild for the core part of the kernel
151 CHECKFLAGS += $(shell $(CC) $(KBUILD_CPPFLAGS) !! 55 core-y += arch/sparc/
152 grep -E -vw '__GNUC_(MINOR_|PATCHLEVEL <<
153 sed -e "s/^\#define /-D'/" -e "s/ /'=' <<
154 endif <<
155 <<
156 libs-y += arch/loongarch/lib/ <<
157 libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/ <<
158 56
159 drivers-y += arch/loongarch/cryp !! 57 libs-y += arch/sparc/prom/
>> 58 libs-y += arch/sparc/lib/
160 59
161 # suspend and hibernation support !! 60 drivers-$(CONFIG_PM) += arch/sparc/power/
162 drivers-$(CONFIG_PM) += arch/loongarch/powe !! 61 drivers-$(CONFIG_OPROFILE) += arch/sparc/oprofile/
163 62
164 ifeq ($(KBUILD_EXTMOD),) !! 63 boot := arch/sparc/boot
165 prepare: vdso_prepare <<
166 vdso_prepare: prepare0 <<
167 $(Q)$(MAKE) $(build)=arch/loongarch/vd <<
168 endif <<
169 64
170 vdso-install-y += arch/loongarch/vdso/vdso.so. !! 65 # Default target
>> 66 all: zImage
171 67
172 all: $(notdir $(KBUILD_IMAGE)) $(KBUILD_DTB !! 68 image zImage uImage tftpboot.img vmlinux.aout: vmlinux
>> 69 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
173 70
174 vmlinuz.efi: vmlinux.efi !! 71 install:
>> 72 $(Q)$(MAKE) $(build)=$(boot) $@
175 73
176 vmlinux.elf vmlinux.efi vmlinuz.efi: vmlinux !! 74 archclean:
177 $(Q)$(MAKE) $(build)=$(boot) $(bootvar !! 75 $(Q)$(MAKE) $(clean)=$(boot)
178 76
179 install: !! 77 # This is the image used for packaging
180 $(Q)install -D -m 755 $(KBUILD_IMAGE) !! 78 KBUILD_IMAGE := $(boot)/zImage
181 $(Q)install -D -m 644 .config $(INSTAL <<
182 $(Q)install -D -m 644 System.map $(INS <<
183 79
>> 80 # Don't use tabs in echo arguments.
>> 81 ifeq ($(ARCH),sparc)
184 define archhelp 82 define archhelp
185 echo ' install - install !! 83 echo '* image - kernel image ($(boot)/image)'
186 echo !! 84 echo '* zImage - stripped kernel image ($(boot)/zImage)'
>> 85 echo ' uImage - U-Boot SPARC32 Image (only for LEON)'
>> 86 echo ' tftpboot.img - image prepared for tftp'
187 endef 87 endef
>> 88 else
>> 89 define archhelp
>> 90 echo '* vmlinux - standard sparc64 kernel'
>> 91 echo '* zImage - stripped and compressed sparc64 kernel ($(boot)/zImage)'
>> 92 echo ' vmlinux.aout - a.out kernel for sparc64'
>> 93 echo ' tftpboot.img - image prepared for tftp'
>> 94 endef
>> 95 endif
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