1 # SPDX-License-Identifier: GPL-2.0 <<
2 # 1 #
3 # Author: Huacai Chen <chenhuacai@loongson.cn> !! 2 # This file is subject to the terms and conditions of the GNU General Public
4 # Copyright (C) 2020-2022 Loongson Technology !! 3 # License. See the file "COPYING" in the main directory of this archive
>> 4 # for more details.
>> 5 #
>> 6 # Copyright (C) 1994, 95, 96, 2003 by Ralf Baechle
>> 7 # DECStation modifications by Paul M. Antoine, 1996
>> 8 # Copyright (C) 2002, 2003, 2004 Maciej W. Rozycki
>> 9 #
>> 10 # This file is included by the global makefile so that you can add your own
>> 11 # architecture-specific flags and dependencies.
>> 12 #
5 13
6 boot := arch/loongarch/boot !! 14 archscripts: scripts_basic
>> 15 $(Q)$(MAKE) $(build)=arch/mips/tools elf-entry
>> 16 ifeq ($(CONFIG_CPU_LOONGSON3_WORKAROUNDS),y)
>> 17 $(Q)$(MAKE) $(build)=arch/mips/tools loongson3-llsc-check
>> 18 endif
>> 19 $(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs
7 20
8 KBUILD_DEFCONFIG := loongson3_defconfig !! 21 KBUILD_DEFCONFIG := 32r2el_defconfig
9 KBUILD_DTBS := dtbs 22 KBUILD_DTBS := dtbs
10 23
11 image-name-y := vmlinux <<
12 image-name-$(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 # 24 #
21 # Select the object file format to substitute 25 # Select the object file format to substitute into the linker script.
22 # 26 #
23 64bit-tool-archpref = loongarch64 !! 27 ifdef CONFIG_CPU_LITTLE_ENDIAN
24 32bit-bfd = elf32-loongarch !! 28 32bit-tool-archpref = mipsel
25 64bit-bfd = elf64-loongarch !! 29 64bit-tool-archpref = mips64el
26 32bit-emul = elf32loongarch !! 30 32bit-bfd = elf32-tradlittlemips
27 64bit-emul = elf64loongarch !! 31 64bit-bfd = elf64-tradlittlemips
28 !! 32 32bit-emul = elf32ltsmip
29 CC_FLAGS_FPU := -mfpu=64 !! 33 64bit-emul = elf64ltsmip
30 CC_FLAGS_NO_FPU := -msoft-float !! 34 else
31 !! 35 32bit-tool-archpref = mips
32 ifdef CONFIG_UNWINDER_ORC !! 36 64bit-tool-archpref = mips64
33 orc_hash_h := arch/$(SRCARCH)/include/generate !! 37 32bit-bfd = elf32-tradbigmips
34 orc_hash_sh := $(srctree)/scripts/orc_hash.sh !! 38 64bit-bfd = elf64-tradbigmips
35 targets += $(orc_hash_h) !! 39 32bit-emul = elf32btsmip
36 quiet_cmd_orc_hash = GEN $@ !! 40 64bit-emul = elf64btsmip
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 41 endif
48 42
>> 43 ifdef CONFIG_32BIT
>> 44 tool-archpref = $(32bit-tool-archpref)
>> 45 UTS_MACHINE := mips
>> 46 endif
49 ifdef CONFIG_64BIT 47 ifdef CONFIG_64BIT
50 tool-archpref = $(64bit-tool-archpre 48 tool-archpref = $(64bit-tool-archpref)
51 UTS_MACHINE := loongarch64 !! 49 UTS_MACHINE := mips64
52 endif 50 endif
53 51
54 ifneq ($(SUBARCH),$(ARCH)) !! 52 ifdef cross_compiling
55 ifeq ($(CROSS_COMPILE),) 53 ifeq ($(CROSS_COMPILE),)
56 CROSS_COMPILE := $(call cc-cross-prefix, $ 54 CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-)
57 endif 55 endif
58 endif 56 endif
59 57
>> 58 ifdef CONFIG_FUNCTION_GRAPH_TRACER
>> 59 ifndef KBUILD_MCOUNT_RA_ADDRESS
>> 60 ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
>> 61 cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
>> 62 endif
>> 63 endif
>> 64 endif
>> 65 cflags-y += $(call cc-option, -mno-check-zero-division)
>> 66
>> 67 ifdef CONFIG_32BIT
>> 68 ld-emul = $(32bit-emul)
>> 69 vmlinux-32 = vmlinux
>> 70 vmlinux-64 = vmlinux.64
>> 71
>> 72 cflags-y += -mabi=32
>> 73 endif
>> 74
60 ifdef CONFIG_64BIT 75 ifdef CONFIG_64BIT
61 ld-emul = $(64bit-emul) 76 ld-emul = $(64bit-emul)
62 cflags-y += -mabi=lp64s !! 77 vmlinux-32 = vmlinux.32
>> 78 vmlinux-64 = vmlinux
>> 79
>> 80 cflags-y += -mabi=64
63 endif 81 endif
64 82
65 cflags-y += -pipe $(CC_ !! 83 all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32)
66 LDFLAGS_vmlinux += -static -n !! 84 all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64)
>> 85 all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz
67 86
68 # When the assembler supports explicit relocat !! 87 #
69 # GCC may have -mexplicit-relocs off by defaul !! 88 # GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
70 # assembler, so we force it via an option. !! 89 # code since it only slows down the whole thing. At some point we might make
71 # !! 90 # use of global pointer optimizations but their use of $28 conflicts with
72 # When the assembler does not supports explici !! 91 # the current pointer optimization.
73 # it. Disable it if the compiler supports it. !! 92 #
74 # !! 93 # The DECStation requires an ECOFF kernel for remote booting, other MIPS
75 # The combination of a "new" assembler and "ol !! 94 # machines may also. Since BFD is incredibly buggy with respect to
76 # the rarity of this combo and the extra compl !! 95 # crossformat linking we rely on the elf2ecoff tool for format conversion.
77 # Either upgrade the compiler or downgrade the !! 96 #
78 # out if it is the case (by probing for the mo !! 97 cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
79 # compilers in this case would have support). !! 98 cflags-y += -msoft-float -Wa,-msoft-float
80 # !! 99 LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
81 # Also, -mdirect-extern-access is useful in ca !! 100 KBUILD_AFLAGS_MODULE += -mlong-calls
82 # relocs, for avoiding unnecessary GOT accesse !! 101 KBUILD_CFLAGS_MODULE += -mlong-calls
83 # support though. !! 102
84 ifdef CONFIG_AS_HAS_EXPLICIT_RELOCS !! 103 ifeq ($(CONFIG_RELOCATABLE),y)
85 cflags-y += $(call cc-o !! 104 LDFLAGS_vmlinux += --emit-relocs
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 105 endif
97 106
98 KBUILD_AFLAGS += $(call cc-o !! 107 cflags-y += -ffreestanding
99 KBUILD_CFLAGS += $(call cc-o !! 108
100 KBUILD_AFLAGS += $(call cc-o !! 109 cflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
101 KBUILD_CFLAGS += $(call cc-o !! 110 cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -EL
>> 111
>> 112 cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
>> 113 -fno-omit-frame-pointer
>> 114
>> 115 # Some distribution-specific toolchains might pass the -fstack-check
>> 116 # option during the build, which adds a simple stack-probe at the beginning
>> 117 # of every function. This stack probe is to ensure that there is enough
>> 118 # stack space, else a SEGV is generated. This is not desirable for MIPS
>> 119 # as kernel stacks are small, placed in unmapped virtual memory, and do not
>> 120 # grow when overflowed. Especially on SGI IP27 platforms, this check will
>> 121 # lead to a NULL pointer dereference in _raw_spin_lock_irq.
>> 122 #
>> 123 # In disassembly, this stack probe appears at the top of a function as:
>> 124 # sd zero,<offset>(sp)
>> 125 # Where <offset> is a negative value.
>> 126 #
>> 127 cflags-y += -fno-stack-check
>> 128
>> 129 # binutils from v2.35 when built with --enable-mips-fix-loongson3-llsc=yes,
>> 130 # supports an -mfix-loongson3-llsc flag which emits a sync prior to each ll
>> 131 # instruction to work around a CPU bug (see __SYNC_loongson3_war in asm/sync.h
>> 132 # for a description).
>> 133 #
>> 134 # We disable this in order to prevent the assembler meddling with the
>> 135 # instruction that labels refer to, ie. if we label an ll instruction:
>> 136 #
>> 137 # 1: ll v0, 0(a0)
>> 138 #
>> 139 # ...then with the assembler fix applied the label may actually point at a sync
>> 140 # instruction inserted by the assembler, and if we were using the label in an
>> 141 # exception table the table would no longer contain the address of the ll
>> 142 # instruction.
>> 143 #
>> 144 # Avoid this by explicitly disabling that assembler behaviour.
>> 145 #
>> 146 cflags-y += $(call cc-option,-Wa$(comma)-mno-fix-loongson3-llsc,)
102 147
103 ifdef CONFIG_OBJTOOL !! 148 #
104 KBUILD_CFLAGS += -fno-jump-t !! 149 # CPU-dependent compiler/assembler options for optimization.
>> 150 #
>> 151 cflags-$(CONFIG_CPU_R3000) += $(call cc-option,-march=r3000,-march=mips1)
>> 152 cflags-$(CONFIG_CPU_R4300) += $(call cc-option,-march=r4300,-march=mips3) -Wa,--trap
>> 153 cflags-$(CONFIG_CPU_R4X00) += $(call cc-option,-march=r4600,-march=mips3) -Wa,--trap
>> 154 cflags-$(CONFIG_CPU_TX49XX) += $(call cc-option,-march=r4600,-march=mips3) -Wa,--trap
>> 155 cflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,--trap
>> 156 cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,--trap
>> 157 cflags-$(CONFIG_CPU_MIPS32_R5) += -march=mips32r5 -Wa,--trap -modd-spreg
>> 158 cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg
>> 159 cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,--trap
>> 160 cflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,--trap
>> 161 cflags-$(CONFIG_CPU_MIPS64_R5) += -march=mips64r5 -Wa,--trap
>> 162 cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
>> 163 cflags-$(CONFIG_CPU_P5600) += $(call cc-option,-march=p5600,-march=mips32r5) \
>> 164 -Wa,--trap -modd-spreg
>> 165 cflags-$(CONFIG_CPU_R5000) += $(call cc-option,-march=r5000,-march=mips4) \
>> 166 -Wa,--trap
>> 167 cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=mips4) \
>> 168 -Wa,--trap
>> 169 cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=mips4) \
>> 170 -Wa,--trap
>> 171 cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=mips4) \
>> 172 -Wa,--trap
>> 173 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=mips64) \
>> 174 -Wa,--trap
>> 175 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx)
>> 176 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d)
>> 177 cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=mips4) \
>> 178 -Wa,--trap
>> 179 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -march=octeon -Wa,--trap
>> 180 cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
>> 181 cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,--trap
>> 182
>> 183 cflags-$(CONFIG_CPU_LOONGSON2E) += \
>> 184 $(call cc-option,-march=loongson2e,-march=mips3) -Wa,--trap
>> 185 cflags-$(CONFIG_CPU_LOONGSON2F) += \
>> 186 $(call cc-option,-march=loongson2f,-march=mips3) -Wa,--trap
>> 187 # Some -march= flags enable MMI instructions, and GCC complains about that
>> 188 # support being enabled alongside -msoft-float. Thus explicitly disable MMI.
>> 189 cflags-$(CONFIG_CPU_LOONGSON2EF) += $(call cc-option,-mno-loongson-mmi)
>> 190 cflags-$(CONFIG_CPU_LOONGSON64) += \
>> 191 $(call cc-option,-march=loongson3a,-march=mips64r2) -Wa,--trap
>> 192 cflags-$(CONFIG_CPU_LOONGSON64) += $(call cc-option,-mno-loongson-mmi)
>> 193
>> 194 cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
>> 195 cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
>> 196 cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
>> 197 ifdef CONFIG_CPU_LOONGSON2F_WORKAROUNDS
>> 198 cflags-$(CONFIG_CPU_NOP_WORKAROUNDS) += -Wa,-mfix-loongson2f-nop
>> 199 cflags-$(CONFIG_CPU_JUMP_WORKAROUNDS) += -Wa,-mfix-loongson2f-jump
105 endif 200 endif
106 201
107 KBUILD_RUSTFLAGS += --target=lo !! 202 #
108 KBUILD_RUSTFLAGS_KERNEL += -Zdirect-ac !! 203 # Some versions of binutils, not currently mainline as of 2019/02/04, support
109 KBUILD_RUSTFLAGS_MODULE += -Zdirect-ac !! 204 # an -mfix-loongson3-llsc flag which emits a sync prior to each ll instruction
>> 205 # to work around a CPU bug (see __SYNC_loongson3_war in asm/sync.h for a
>> 206 # description).
>> 207 #
>> 208 # We disable this in order to prevent the assembler meddling with the
>> 209 # instruction that labels refer to, ie. if we label an ll instruction:
>> 210 #
>> 211 # 1: ll v0, 0(a0)
>> 212 #
>> 213 # ...then with the assembler fix applied the label may actually point at a sync
>> 214 # instruction inserted by the assembler, and if we were using the label in an
>> 215 # exception table the table would no longer contain the address of the ll
>> 216 # instruction.
>> 217 #
>> 218 # Avoid this by explicitly disabling that assembler behaviour. If upstream
>> 219 # binutils does not merge support for the flag then we can revisit & remove
>> 220 # this later - for now it ensures vendor toolchains don't cause problems.
>> 221 #
>> 222 cflags-$(CONFIG_CPU_LOONGSON64) += $(call as-option,-Wa$(comma)-mno-fix-loongson3-llsc,)
110 223
111 ifeq ($(CONFIG_RELOCATABLE),y) !! 224 # For smartmips configurations, there are hundreds of warnings due to ISA overrides
112 KBUILD_CFLAGS_KERNEL += -fPIE !! 225 # in assembly and header files. smartmips is only supported for MIPS32r1 onwards
113 KBUILD_RUSTFLAGS_KERNEL += -Crelocatio !! 226 # and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
114 LDFLAGS_vmlinux += -static -pi !! 227 # similar directives in the kernel will spam the build logs with the following warnings:
>> 228 # Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
>> 229 # or
>> 230 # Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
>> 231 # Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
>> 232 # been fixed properly.
>> 233 mips-cflags := $(cflags-y)
>> 234 ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
>> 235 smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips)
>> 236 cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn
>> 237 endif
>> 238 ifeq ($(CONFIG_CPU_MICROMIPS),y)
>> 239 micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips)
>> 240 cflags-$(micromips-ase) += -mmicromips
>> 241 endif
>> 242 ifeq ($(CONFIG_CPU_HAS_MSA),y)
>> 243 toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
>> 244 cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA
>> 245 endif
>> 246 toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt)
>> 247 cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT
>> 248 # For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which
>> 249 # only warns
>> 250 xpa-cflags-y := $(mips-cflags)
>> 251 xpa-cflags-$(micromips-ase) += -mmicromips -Wa$(comma)-fatal-warnings
>> 252 toolchain-xpa := $(call cc-option-yn,$(xpa-cflags-y) -mxpa)
>> 253 cflags-$(toolchain-xpa) += -DTOOLCHAIN_SUPPORTS_XPA
>> 254 toolchain-crc := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc)
>> 255 cflags-$(toolchain-crc) += -DTOOLCHAIN_SUPPORTS_CRC
>> 256 toolchain-dsp := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mdsp)
>> 257 cflags-$(toolchain-dsp) += -DTOOLCHAIN_SUPPORTS_DSP
>> 258 toolchain-ginv := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mginv)
>> 259 cflags-$(toolchain-ginv) += -DTOOLCHAIN_SUPPORTS_GINV
>> 260
>> 261 #
>> 262 # Firmware support
>> 263 #
>> 264 libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/
>> 265 libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
>> 266 libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
>> 267 libs-y += arch/mips/fw/lib/
>> 268
>> 269 #
>> 270 # Kernel compression
>> 271 #
>> 272 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
>> 273 COMPRESSION_FNAME = vmlinuz
>> 274 else
>> 275 COMPRESSION_FNAME = vmlinux
115 endif 276 endif
116 277
117 cflags-y += $(call cc-option, -mno-check-zero- !! 278 #
>> 279 # Board-dependent options and extra files
>> 280 #
>> 281 include $(srctree)/arch/mips/Kbuild.platforms
118 282
119 ifndef CONFIG_KASAN !! 283 ifdef CONFIG_PHYSICAL_START
120 cflags-y += -fno-builtin-memcpy -fno-builtin-m !! 284 load-y = $(CONFIG_PHYSICAL_START)
121 endif 285 endif
122 286
123 load-y = 0x9000000000200000 !! 287 entry-y = $(shell $(objtree)/arch/mips/tools/elf-entry vmlinux)
124 bootvars-y = VMLINUX_LOAD_ADDRESS=$(load- !! 288 cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
>> 289 drivers-$(CONFIG_PCI) += arch/mips/pci/
>> 290
>> 291 #
>> 292 # Automatically detect the build format. By default we choose
>> 293 # the elf format according to the load address.
>> 294 # We can always force a build with a 64-bits symbol format by
>> 295 # passing 'KBUILD_SYM32=no' option to the make's command line.
>> 296 #
>> 297 ifdef CONFIG_64BIT
>> 298 ifndef KBUILD_SYM32
>> 299 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
>> 300 KBUILD_SYM32 = $(call cc-option-yn, -msym32)
>> 301 endif
>> 302 endif
>> 303
>> 304 ifeq ($(KBUILD_SYM32), y)
>> 305 cflags-$(KBUILD_SYM32) += -msym32 -DKBUILD_64BIT_SYM32
>> 306 else
>> 307 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
>> 308 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
>> 309 endif
>> 310 endif
>> 311 endif
125 312
126 drivers-$(CONFIG_PCI) += arch/loonga !! 313 # When linking a 32-bit executable the LLVM linker cannot cope with a
>> 314 # 32-bit load address that has been sign-extended to 64 bits. Simply
>> 315 # remove the upper 32 bits then, as it is safe to do so with other
>> 316 # linkers.
>> 317 ifdef CONFIG_64BIT
>> 318 load-ld = $(load-y)
>> 319 else
>> 320 load-ld = $(subst 0xffffffff,0x,$(load-y))
>> 321 endif
127 322
128 KBUILD_AFLAGS += $(cflags-y) 323 KBUILD_AFLAGS += $(cflags-y)
129 KBUILD_CFLAGS += $(cflags-y) 324 KBUILD_CFLAGS += $(cflags-y)
130 KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(lo !! 325 KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) -DLINKER_LOAD_ADDRESS=$(load-ld)
>> 326 KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
>> 327
>> 328 bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
>> 329 LINKER_LOAD_ADDRESS=$(load-ld) \
>> 330 VMLINUX_ENTRY_ADDRESS=$(entry-y) \
>> 331 PLATFORM="$(platform-y)" \
>> 332 ITS_INPUTS="$(its-y)"
>> 333 ifdef CONFIG_32BIT
>> 334 bootvars-y += ADDR_BITS=32
>> 335 endif
>> 336 ifdef CONFIG_64BIT
>> 337 bootvars-y += ADDR_BITS=64
>> 338 endif
131 339
132 # This is required to get dwarf unwinding tabl 340 # This is required to get dwarf unwinding tables into .debug_frame
133 # instead of .eh_frame so we don't discard the 341 # instead of .eh_frame so we don't discard them.
134 KBUILD_CFLAGS += -fno-asynchronous-unwind-tabl 342 KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
135 343
136 ifdef CONFIG_ARCH_STRICT_ALIGN !! 344 KBUILD_LDFLAGS += -m $(ld-emul)
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) <<
149 345
150 ifdef need-compiler 346 ifdef need-compiler
151 CHECKFLAGS += $(shell $(CC) $(KBUILD_CPPFLAGS) 347 CHECKFLAGS += $(shell $(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
152 grep -E -vw '__GNUC_(MINOR_|PATCHLEVEL 348 grep -E -vw '__GNUC_(MINOR_|PATCHLEVEL_)?_' | \
153 sed -e "s/^\#define /-D'/" -e "s/ /'=' 349 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
154 endif 350 endif
155 351
156 libs-y += arch/loongarch/lib/ !! 352 OBJCOPYFLAGS += --remove-section=.reginfo
157 libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/ !! 353
>> 354 libs-y += arch/mips/lib/
>> 355 libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/
158 356
159 drivers-y += arch/loongarch/cryp !! 357 drivers-y += arch/mips/crypto/
160 358
161 # suspend and hibernation support 359 # suspend and hibernation support
162 drivers-$(CONFIG_PM) += arch/loongarch/powe !! 360 drivers-$(CONFIG_PM) += arch/mips/power/
>> 361
>> 362 # boot image targets (arch/mips/boot/)
>> 363 boot-y := vmlinux.bin
>> 364 boot-y += vmlinux.ecoff
>> 365 boot-y += vmlinux.srec
>> 366 boot-y += uImage
>> 367 boot-y += uImage.bin
>> 368 boot-y += uImage.bz2
>> 369 boot-y += uImage.gz
>> 370 boot-y += uImage.lzma
>> 371 boot-y += uImage.lzo
>> 372 boot-y += vmlinux.itb
>> 373 boot-y += vmlinux.gz.itb
>> 374 boot-y += vmlinux.bz2.itb
>> 375 boot-y += vmlinux.lzma.itb
>> 376 boot-y += vmlinux.lzo.itb
>> 377
>> 378 # compressed boot image targets (arch/mips/boot/compressed/)
>> 379 bootz-y := vmlinuz
>> 380 bootz-y += vmlinuz.bin
>> 381 bootz-y += vmlinuz.ecoff
>> 382 bootz-y += vmlinuz.srec
>> 383 bootz-y += uzImage.bin
>> 384 bootz-y += vmlinuz.itb
163 385
164 ifeq ($(KBUILD_EXTMOD),) !! 386 #
165 prepare: vdso_prepare !! 387 # Some machines like the Indy need 32-bit ELF binaries for booting purposes.
166 vdso_prepare: prepare0 !! 388 # Other need ECOFF, so we build a 32-bit ELF binary for them which we then
167 $(Q)$(MAKE) $(build)=arch/loongarch/vd !! 389 # convert to ECOFF using elf2ecoff.
>> 390 #
>> 391 quiet_cmd_32 = OBJCOPY $@
>> 392 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
>> 393 vmlinux.32: vmlinux
>> 394 $(call cmd,32)
>> 395
>> 396 #
>> 397 # The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
>> 398 # ELF files from 32-bit files by conversion.
>> 399 #
>> 400 quiet_cmd_64 = OBJCOPY $@
>> 401 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
>> 402 vmlinux.64: vmlinux
>> 403 $(call cmd,64)
>> 404
>> 405 all: $(all-y) $(KBUILD_DTBS)
>> 406
>> 407 # boot
>> 408 $(boot-y): $(vmlinux-32) FORCE
>> 409 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
>> 410 $(bootvars-y) arch/mips/boot/$@
>> 411
>> 412 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
>> 413 # boot/compressed
>> 414 $(bootz-y): $(vmlinux-32) FORCE
>> 415 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
>> 416 $(bootvars-y) 32bit-bfd=$(32bit-bfd) arch/mips/boot/$@
>> 417 else
>> 418 vmlinuz: FORCE
>> 419 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
>> 420 /bin/false
168 endif 421 endif
169 422
170 vdso-install-y += arch/loongarch/vdso/vdso.so. <<
171 423
172 all: $(notdir $(KBUILD_IMAGE)) $(KBUILD_DTB !! 424 CLEAN_FILES += vmlinux.32 vmlinux.64
173 425
174 vmlinuz.efi: vmlinux.efi !! 426 # device-trees
>> 427 core-y += arch/mips/boot/dts/
175 428
176 vmlinux.elf vmlinux.efi vmlinuz.efi: vmlinux !! 429 archprepare:
177 $(Q)$(MAKE) $(build)=$(boot) $(bootvar !! 430 ifdef CONFIG_MIPS32_N32
>> 431 @$(kecho) ' Checking missing-syscalls for N32'
>> 432 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
>> 433 endif
>> 434 ifdef CONFIG_MIPS32_O32
>> 435 @$(kecho) ' Checking missing-syscalls for O32'
>> 436 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
>> 437 endif
178 438
179 install: 439 install:
180 $(Q)install -D -m 755 $(KBUILD_IMAGE) !! 440 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
>> 441 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
>> 442 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
>> 443 endif
181 $(Q)install -D -m 644 .config $(INSTAL 444 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
182 $(Q)install -D -m 644 System.map $(INS 445 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
183 446
>> 447 archheaders:
>> 448 $(Q)$(MAKE) $(build)=arch/mips/kernel/syscalls all
>> 449
184 define archhelp 450 define archhelp
185 echo ' install - install 451 echo ' install - install kernel into $(INSTALL_PATH)'
>> 452 echo ' vmlinux.ecoff - ECOFF boot image'
>> 453 echo ' vmlinux.bin - Raw binary boot image'
>> 454 echo ' vmlinux.srec - SREC boot image'
>> 455 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)'
>> 456 echo ' vmlinuz - Compressed boot(zboot) image'
>> 457 echo ' vmlinuz.ecoff - ECOFF zboot image'
>> 458 echo ' vmlinuz.bin - Raw binary zboot image'
>> 459 echo ' vmlinuz.srec - SREC zboot image'
>> 460 echo ' uImage - U-Boot image'
>> 461 echo ' uImage.bin - U-Boot image (uncompressed)'
>> 462 echo ' uImage.bz2 - U-Boot image (bz2)'
>> 463 echo ' uImage.gz - U-Boot image (gzip)'
>> 464 echo ' uImage.lzma - U-Boot image (lzma)'
>> 465 echo ' uImage.lzo - U-Boot image (lzo)'
>> 466 echo ' uzImage.bin - U-Boot image (self-extracting)'
>> 467 echo
>> 468 echo ' These will be default as appropriate for a configured platform.'
>> 469 echo
>> 470 echo ' If you are targeting a system supported by generic kernels you may'
>> 471 echo ' configure the kernel for a given architecture target like so:'
>> 472 echo
>> 473 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
>> 474 echo
>> 475 echo ' Where BOARDS is some subset of the following:'
>> 476 for board in $(sort $(BOARDS)); do echo " $${board}"; done
>> 477 echo
>> 478 echo ' Specifically the following generic default configurations are'
>> 479 echo ' supported:'
186 echo 480 echo
>> 481 $(foreach cfg,$(generic_defconfigs),
>> 482 printf " %-24s - Build generic kernel for $(call describe_generic_defconfig,$(cfg))\n" $(cfg);)
>> 483 echo
>> 484 echo ' The following legacy default configurations have been converted to'
>> 485 echo ' generic and can still be used:'
>> 486 echo
>> 487 $(foreach cfg,$(sort $(legacy_defconfigs)),
>> 488 printf " %-24s - Build $($(cfg)-y)\n" $(cfg);)
>> 489 echo
>> 490 echo ' Otherwise, the following default configurations are available:'
>> 491 endef
>> 492
>> 493 generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
>> 494 generic_defconfigs :=
>> 495
>> 496 #
>> 497 # If the user generates a generic kernel configuration without specifying a
>> 498 # list of boards to include the config fragments for, default to including all
>> 499 # available board config fragments.
>> 500 #
>> 501 ifeq ($(BOARDS),)
>> 502 BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
>> 503 endif
>> 504
>> 505 #
>> 506 # Generic kernel configurations which merge generic_defconfig with the
>> 507 # appropriate config fragments from arch/mips/configs/generic/, resulting in
>> 508 # the ability to easily configure the kernel for a given architecture,
>> 509 # endianness & set of boards without duplicating the needed configuration in
>> 510 # hundreds of defconfig files.
>> 511 #
>> 512 define gen_generic_defconfigs
>> 513 $(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
>> 514 target := $(bits)$(rev)$(filter el,$(endian))_defconfig
>> 515 generic_defconfigs += $$(target)
>> 516 $$(target): $(generic_config_dir)/$(bits)$(rev).config
>> 517 $$(target): $(generic_config_dir)/$(endian).config
>> 518 )))
>> 519 endef
>> 520
>> 521 $(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
>> 522 $(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
>> 523
>> 524 define describe_generic_defconfig
>> 525 $(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(subst el, little endian,$(patsubst %_defconfig,%,$(1)))))
187 endef 526 endef
>> 527
>> 528 .PHONY: $(generic_defconfigs)
>> 529 $(generic_defconfigs):
>> 530 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
>> 531 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \
>> 532 grep -Ev '^#'
>> 533 $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@
>> 534 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \
>> 535 KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null
>> 536 $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \
>> 537 $(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \
>> 538 "$(origin BOARDS)" $(BOARDS)
>> 539 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
>> 540
>> 541 #
>> 542 # Prevent generic merge_config rules attempting to merge single fragments
>> 543 #
>> 544 $(generic_config_dir)/%.config: ;
>> 545
>> 546 #
>> 547 # Prevent direct use of generic_defconfig, which is intended to be used as the
>> 548 # basis of the various ISA-specific targets generated above.
>> 549 #
>> 550 .PHONY: generic_defconfig
>> 551 generic_defconfig:
>> 552 $(Q)echo "generic_defconfig is not intended for direct use, but should instead be"
>> 553 $(Q)echo "used via an ISA-specific target from the following list:"
>> 554 $(Q)echo
>> 555 $(Q)for cfg in $(generic_defconfigs); do echo " $${cfg}"; done
>> 556 $(Q)echo
>> 557 $(Q)false
>> 558
>> 559 #
>> 560 # Legacy defconfig compatibility - these targets used to be real defconfigs but
>> 561 # now that the boards have been converted to use the generic kernel they are
>> 562 # wrappers around the generic rules above.
>> 563 #
>> 564 legacy_defconfigs += ocelot_defconfig
>> 565 ocelot_defconfig-y := 32r2el_defconfig BOARDS=ocelot
>> 566
>> 567 legacy_defconfigs += sead3_defconfig
>> 568 sead3_defconfig-y := 32r2el_defconfig BOARDS=sead-3
>> 569
>> 570 legacy_defconfigs += sead3micro_defconfig
>> 571 sead3micro_defconfig-y := micro32r2el_defconfig BOARDS=sead-3
>> 572
>> 573 legacy_defconfigs += xilfpga_defconfig
>> 574 xilfpga_defconfig-y := 32r2el_defconfig BOARDS=xilfpga
>> 575
>> 576 legacy_defconfigs += pistachio_defconfig
>> 577 pistachio_defconfig-y := 32r2el_defconfig BOARDS=marduk
>> 578
>> 579 .PHONY: $(legacy_defconfigs)
>> 580 $(legacy_defconfigs):
>> 581 $(Q)$(MAKE) -f $(srctree)/Makefile $($@-y)
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