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 $28 conflicts with
72 # When the assembler does not supports explici !! 91 # the current pointer optimization.
73 # it. Disable it if the compiler supports it. !! 92 #
74 # !! 93 # The DECStation requires an ECOFF kernel for remote booting, other MIPS
75 # The combination of a "new" assembler and "ol !! 94 # machines may also. Since BFD is incredibly buggy with respect to
76 # the rarity of this combo and the extra compl !! 95 # crossformat linking we rely on the elf2ecoff tool for format conversion.
77 # Either upgrade the compiler or downgrade the !! 96 #
78 # out if it is the case (by probing for the mo !! 97 cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
79 # compilers in this case would have support). !! 98 cflags-y += -msoft-float
80 # !! 99 LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
81 # Also, -mdirect-extern-access is useful in ca !! 100 KBUILD_AFLAGS_MODULE += -mlong-calls
82 # relocs, for avoiding unnecessary GOT accesse !! 101 KBUILD_CFLAGS_MODULE += -mlong-calls
83 # support though. !! 102
84 ifdef CONFIG_AS_HAS_EXPLICIT_RELOCS !! 103 ifeq ($(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 #
99 KBUILD_CFLAGS += $(call cc-o !! 108 # pass -msoft-float to GAS if it supports it. However on newer binutils
100 KBUILD_AFLAGS += $(call cc-o !! 109 # (specifically newer than 2.24.51.20140728) we then also need to explicitly
101 KBUILD_CFLAGS += $(call cc-o !! 110 # set ".set hardfloat" in all files which manipulate floating point registers.
>> 111 #
>> 112 ifneq ($(call cc-option,$(cflags-y) -Wa$(comma)-msoft-float,),)
>> 113 cflags-y += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float
>> 114 endif
>> 115
>> 116 cflags-y += -ffreestanding
>> 117
>> 118 cflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
>> 119 cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -EL
>> 120
>> 121 cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
>> 122 -fno-omit-frame-pointer
>> 123
>> 124 # Some distribution-specific toolchains might pass the -fstack-check
>> 125 # option during the build, which adds a simple stack-probe at the beginning
>> 126 # of every function. This stack probe is to ensure that there is enough
>> 127 # stack space, else a SEGV is generated. This is not desirable for MIPS
>> 128 # as kernel stacks are small, placed in unmapped virtual memory, and do not
>> 129 # grow when overflowed. Especially on SGI IP27 platforms, this check will
>> 130 # lead to a NULL pointer dereference in _raw_spin_lock_irq.
>> 131 #
>> 132 # In disassembly, this stack probe appears at the top of a function as:
>> 133 # sd zero,<offset>(sp)
>> 134 # Where <offset> is a negative value.
>> 135 #
>> 136 cflags-y += -fno-stack-check
>> 137
>> 138 # binutils from v2.35 when built with --enable-mips-fix-loongson3-llsc=yes,
>> 139 # supports an -mfix-loongson3-llsc flag which emits a sync prior to each ll
>> 140 # instruction to work around a CPU bug (see __SYNC_loongson3_war in asm/sync.h
>> 141 # for a description).
>> 142 #
>> 143 # We disable this in order to prevent the assembler meddling with the
>> 144 # instruction that labels refer to, ie. if we label an ll instruction:
>> 145 #
>> 146 # 1: ll v0, 0(a0)
>> 147 #
>> 148 # ...then with the assembler fix applied the label may actually point at a sync
>> 149 # instruction inserted by the assembler, and if we were using the label in an
>> 150 # exception table the table would no longer contain the address of the ll
>> 151 # instruction.
>> 152 #
>> 153 # Avoid this by explicitly disabling that assembler behaviour.
>> 154 #
>> 155 cflags-y += $(call cc-option,-Wa$(comma)-mno-fix-loongson3-llsc,)
102 156
103 ifdef CONFIG_OBJTOOL !! 157 #
104 KBUILD_CFLAGS += -fno-jump-t !! 158 # CPU-dependent compiler/assembler options for optimization.
>> 159 #
>> 160 cflags-$(CONFIG_CPU_R3000) += -march=r3000
>> 161 cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
>> 162 cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
>> 163 cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
>> 164 cflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,--trap
>> 165 cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,--trap
>> 166 cflags-$(CONFIG_CPU_MIPS32_R5) += -march=mips32r5 -Wa,--trap -modd-spreg
>> 167 cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg
>> 168 cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,--trap
>> 169 cflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,--trap
>> 170 cflags-$(CONFIG_CPU_MIPS64_R5) += -march=mips64r5 -Wa,--trap
>> 171 cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
>> 172 cflags-$(CONFIG_CPU_P5600) += -march=p5600 -Wa,--trap -modd-spreg
>> 173 cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
>> 174 cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
>> 175 -Wa,--trap
>> 176 cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
>> 177 -Wa,--trap
>> 178 cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
>> 179 -Wa,--trap
>> 180 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
>> 181 -Wa,--trap
>> 182 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx)
>> 183 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d)
>> 184 cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
>> 185 -Wa,--trap
>> 186 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
>> 187 ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
>> 188 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
>> 189 endif
>> 190 cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
>> 191 cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
>> 192
>> 193 cflags-$(CONFIG_CPU_LOONGSON2E) += $(call cc-option,-march=loongson2e) -Wa,--trap
>> 194 cflags-$(CONFIG_CPU_LOONGSON2F) += $(call cc-option,-march=loongson2f) -Wa,--trap
>> 195 cflags-$(CONFIG_CPU_LOONGSON64) += $(call cc-option,-march=loongson3a,-march=mips64r2) -Wa,--trap
>> 196 # Some -march= flags enable MMI instructions, and GCC complains about that
>> 197 # support being enabled alongside -msoft-float. Thus explicitly disable MMI.
>> 198 cflags-$(CONFIG_CPU_LOONGSON2EF) += $(call cc-option,-mno-loongson-mmi)
>> 199 cflags-$(CONFIG_CPU_LOONGSON64) += $(call cc-option,-mno-loongson-mmi)
>> 200
>> 201 cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
>> 202 cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
>> 203 cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
>> 204 ifdef CONFIG_CPU_LOONGSON2F_WORKAROUNDS
>> 205 cflags-$(CONFIG_CPU_NOP_WORKAROUNDS) += -Wa,-mfix-loongson2f-nop
>> 206 cflags-$(CONFIG_CPU_JUMP_WORKAROUNDS) += -Wa,-mfix-loongson2f-jump
105 endif 207 endif
106 208
107 KBUILD_RUSTFLAGS += --target=lo !! 209 #
108 KBUILD_RUSTFLAGS_KERNEL += -Zdirect-ac !! 210 # Some versions of binutils, not currently mainline as of 2019/02/04, support
109 KBUILD_RUSTFLAGS_MODULE += -Zdirect-ac !! 211 # an -mfix-loongson3-llsc flag which emits a sync prior to each ll instruction
>> 212 # to work around a CPU bug (see __SYNC_loongson3_war in asm/sync.h for a
>> 213 # description).
>> 214 #
>> 215 # We disable this in order to prevent the assembler meddling with the
>> 216 # instruction that labels refer to, ie. if we label an ll instruction:
>> 217 #
>> 218 # 1: ll v0, 0(a0)
>> 219 #
>> 220 # ...then with the assembler fix applied the label may actually point at a sync
>> 221 # instruction inserted by the assembler, and if we were using the label in an
>> 222 # exception table the table would no longer contain the address of the ll
>> 223 # instruction.
>> 224 #
>> 225 # Avoid this by explicitly disabling that assembler behaviour. If upstream
>> 226 # binutils does not merge support for the flag then we can revisit & remove
>> 227 # this later - for now it ensures vendor toolchains don't cause problems.
>> 228 #
>> 229 cflags-$(CONFIG_CPU_LOONGSON64) += $(call as-option,-Wa$(comma)-mno-fix-loongson3-llsc,)
110 230
111 ifeq ($(CONFIG_RELOCATABLE),y) !! 231 # For smartmips configurations, there are hundreds of warnings due to ISA overrides
112 KBUILD_CFLAGS_KERNEL += -fPIE !! 232 # in assembly and header files. smartmips is only supported for MIPS32r1 onwards
113 KBUILD_RUSTFLAGS_KERNEL += -Crelocatio !! 233 # and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
114 LDFLAGS_vmlinux += -static -pi !! 234 # similar directives in the kernel will spam the build logs with the following warnings:
>> 235 # Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
>> 236 # or
>> 237 # Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
>> 238 # Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
>> 239 # been fixed properly.
>> 240 mips-cflags := $(cflags-y)
>> 241 ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
>> 242 smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips)
>> 243 cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn
>> 244 endif
>> 245 ifeq ($(CONFIG_CPU_MICROMIPS),y)
>> 246 micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips)
>> 247 cflags-$(micromips-ase) += -mmicromips
>> 248 endif
>> 249 ifeq ($(CONFIG_CPU_HAS_MSA),y)
>> 250 toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
>> 251 cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA
>> 252 endif
>> 253 toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt)
>> 254 cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT
>> 255 # For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which
>> 256 # only warns
>> 257 xpa-cflags-y := $(mips-cflags)
>> 258 xpa-cflags-$(micromips-ase) += -mmicromips -Wa$(comma)-fatal-warnings
>> 259 toolchain-xpa := $(call cc-option-yn,$(xpa-cflags-y) -mxpa)
>> 260 cflags-$(toolchain-xpa) += -DTOOLCHAIN_SUPPORTS_XPA
>> 261 toolchain-crc := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc)
>> 262 cflags-$(toolchain-crc) += -DTOOLCHAIN_SUPPORTS_CRC
>> 263 toolchain-dsp := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mdsp)
>> 264 cflags-$(toolchain-dsp) += -DTOOLCHAIN_SUPPORTS_DSP
>> 265 toolchain-ginv := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mginv)
>> 266 cflags-$(toolchain-ginv) += -DTOOLCHAIN_SUPPORTS_GINV
>> 267
>> 268 #
>> 269 # Firmware support
>> 270 #
>> 271 libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/
>> 272 libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
>> 273 libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
>> 274 libs-y += arch/mips/fw/lib/
>> 275
>> 276 #
>> 277 # Kernel compression
>> 278 #
>> 279 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
>> 280 COMPRESSION_FNAME = vmlinuz
>> 281 else
>> 282 COMPRESSION_FNAME = vmlinux
115 endif 283 endif
116 284
117 cflags-y += $(call cc-option, -mno-check-zero- !! 285 #
>> 286 # Board-dependent options and extra files
>> 287 #
>> 288 include $(srctree)/arch/mips/Kbuild.platforms
118 289
119 ifndef CONFIG_KASAN !! 290 ifdef CONFIG_PHYSICAL_START
120 cflags-y += -fno-builtin-memcpy -fno-builtin-m !! 291 load-y = $(CONFIG_PHYSICAL_START)
121 endif 292 endif
122 293
123 load-y = 0x9000000000200000 !! 294 entry-y = $(shell $(objtree)/arch/mips/tools/elf-entry vmlinux)
124 bootvars-y = VMLINUX_LOAD_ADDRESS=$(load- !! 295 cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
>> 296 drivers-$(CONFIG_PCI) += arch/mips/pci/
>> 297
>> 298 #
>> 299 # Automatically detect the build format. By default we choose
>> 300 # the elf format according to the load address.
>> 301 # We can always force a build with a 64-bits symbol format by
>> 302 # passing 'KBUILD_SYM32=no' option to the make's command line.
>> 303 #
>> 304 ifdef CONFIG_64BIT
>> 305 ifndef KBUILD_SYM32
>> 306 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
>> 307 KBUILD_SYM32 = y
>> 308 endif
>> 309 endif
>> 310
>> 311 ifeq ($(KBUILD_SYM32), y)
>> 312 cflags-$(KBUILD_SYM32) += -msym32 -DKBUILD_64BIT_SYM32
>> 313 else
>> 314 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
>> 315 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
>> 316 endif
>> 317 endif
>> 318 endif
125 319
126 drivers-$(CONFIG_PCI) += arch/loonga !! 320 # When linking a 32-bit executable the LLVM linker cannot cope with a
>> 321 # 32-bit load address that has been sign-extended to 64 bits. Simply
>> 322 # remove the upper 32 bits then, as it is safe to do so with other
>> 323 # linkers.
>> 324 ifdef CONFIG_64BIT
>> 325 load-ld = $(load-y)
>> 326 else
>> 327 load-ld = $(subst 0xffffffff,0x,$(load-y))
>> 328 endif
127 329
128 KBUILD_AFLAGS += $(cflags-y) 330 KBUILD_AFLAGS += $(cflags-y)
129 KBUILD_CFLAGS += $(cflags-y) 331 KBUILD_CFLAGS += $(cflags-y)
130 KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(lo !! 332 KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) -DLINKER_LOAD_ADDRESS=$(load-ld)
>> 333 KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
>> 334
>> 335 bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
>> 336 LINKER_LOAD_ADDRESS=$(load-ld) \
>> 337 VMLINUX_ENTRY_ADDRESS=$(entry-y) \
>> 338 PLATFORM="$(platform-y)" \
>> 339 ITS_INPUTS="$(its-y)"
>> 340 ifdef CONFIG_32BIT
>> 341 bootvars-y += ADDR_BITS=32
>> 342 endif
>> 343 ifdef CONFIG_64BIT
>> 344 bootvars-y += ADDR_BITS=64
>> 345 endif
131 346
132 # This is required to get dwarf unwinding tabl 347 # This is required to get dwarf unwinding tables into .debug_frame
133 # instead of .eh_frame so we don't discard the 348 # instead of .eh_frame so we don't discard them.
134 KBUILD_CFLAGS += -fno-asynchronous-unwind-tabl 349 KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
135 350
136 ifdef CONFIG_ARCH_STRICT_ALIGN !! 351 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) <<
149 352
150 ifdef need-compiler 353 ifdef need-compiler
151 CHECKFLAGS += $(shell $(CC) $(KBUILD_CPPFLAGS) !! 354 CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
152 grep -E -vw '__GNUC_(MINOR_|PATCHLEVEL 355 grep -E -vw '__GNUC_(MINOR_|PATCHLEVEL_)?_' | \
153 sed -e "s/^\#define /-D'/" -e "s/ /'=' 356 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
154 endif 357 endif
155 358
156 libs-y += arch/loongarch/lib/ !! 359 OBJCOPYFLAGS += --remove-section=.reginfo
157 libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/ !! 360
>> 361 libs-y += arch/mips/lib/
>> 362 libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/
158 363
159 drivers-y += arch/loongarch/cryp !! 364 drivers-y += arch/mips/crypto/
160 365
161 # suspend and hibernation support 366 # suspend and hibernation support
162 drivers-$(CONFIG_PM) += arch/loongarch/powe !! 367 drivers-$(CONFIG_PM) += arch/mips/power/
163 368
164 ifeq ($(KBUILD_EXTMOD),) !! 369 # boot image targets (arch/mips/boot/)
165 prepare: vdso_prepare !! 370 boot-y := vmlinux.bin
166 vdso_prepare: prepare0 !! 371 boot-y += vmlinux.ecoff
167 $(Q)$(MAKE) $(build)=arch/loongarch/vd !! 372 boot-y += vmlinux.srec
>> 373 boot-y += uImage
>> 374 boot-y += uImage.bin
>> 375 boot-y += uImage.bz2
>> 376 boot-y += uImage.gz
>> 377 boot-y += uImage.lzma
>> 378 boot-y += uImage.lzo
>> 379 boot-y += vmlinux.itb
>> 380 boot-y += vmlinux.gz.itb
>> 381 boot-y += vmlinux.bz2.itb
>> 382 boot-y += vmlinux.lzma.itb
>> 383 boot-y += vmlinux.lzo.itb
>> 384
>> 385 # compressed boot image targets (arch/mips/boot/compressed/)
>> 386 bootz-y := vmlinuz
>> 387 bootz-y += vmlinuz.bin
>> 388 bootz-y += vmlinuz.ecoff
>> 389 bootz-y += vmlinuz.srec
>> 390 bootz-y += uzImage.bin
>> 391 bootz-y += vmlinuz.itb
>> 392
>> 393 #
>> 394 # Some machines like the Indy need 32-bit ELF binaries for booting purposes.
>> 395 # Other need ECOFF, so we build a 32-bit ELF binary for them which we then
>> 396 # convert to ECOFF using elf2ecoff.
>> 397 #
>> 398 quiet_cmd_32 = OBJCOPY $@
>> 399 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
>> 400 vmlinux.32: vmlinux
>> 401 $(call cmd,32)
>> 402
>> 403 #
>> 404 # The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
>> 405 # ELF files from 32-bit files by conversion.
>> 406 #
>> 407 quiet_cmd_64 = OBJCOPY $@
>> 408 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
>> 409 vmlinux.64: vmlinux
>> 410 $(call cmd,64)
>> 411
>> 412 all: $(all-y) $(KBUILD_DTBS)
>> 413
>> 414 # boot
>> 415 $(boot-y): $(vmlinux-32) FORCE
>> 416 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
>> 417 $(bootvars-y) arch/mips/boot/$@
>> 418
>> 419 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
>> 420 # boot/compressed
>> 421 $(bootz-y): $(vmlinux-32) FORCE
>> 422 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
>> 423 $(bootvars-y) 32bit-bfd=$(32bit-bfd) arch/mips/boot/$@
>> 424 else
>> 425 vmlinuz: FORCE
>> 426 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
>> 427 /bin/false
168 endif 428 endif
169 429
170 vdso-install-y += arch/loongarch/vdso/vdso.so. <<
171 430
172 all: $(notdir $(KBUILD_IMAGE)) $(KBUILD_DTB !! 431 CLEAN_FILES += vmlinux.32 vmlinux.64
173 432
174 vmlinuz.efi: vmlinux.efi !! 433 # device-trees
>> 434 core-y += arch/mips/boot/dts/
175 435
176 vmlinux.elf vmlinux.efi vmlinuz.efi: vmlinux !! 436 archprepare:
177 $(Q)$(MAKE) $(build)=$(boot) $(bootvar !! 437 ifdef CONFIG_MIPS32_N32
>> 438 @$(kecho) ' Checking missing-syscalls for N32'
>> 439 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
>> 440 endif
>> 441 ifdef CONFIG_MIPS32_O32
>> 442 @$(kecho) ' Checking missing-syscalls for O32'
>> 443 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
>> 444 endif
178 445
179 install: 446 install:
180 $(Q)install -D -m 755 $(KBUILD_IMAGE) !! 447 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
>> 448 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
>> 449 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
>> 450 endif
181 $(Q)install -D -m 644 .config $(INSTAL 451 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
182 $(Q)install -D -m 644 System.map $(INS 452 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
183 453
>> 454 archheaders:
>> 455 $(Q)$(MAKE) $(build)=arch/mips/kernel/syscalls all
>> 456
184 define archhelp 457 define archhelp
185 echo ' install - install 458 echo ' install - install kernel into $(INSTALL_PATH)'
>> 459 echo ' vmlinux.ecoff - ECOFF boot image'
>> 460 echo ' vmlinux.bin - Raw binary boot image'
>> 461 echo ' vmlinux.srec - SREC boot image'
>> 462 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)'
>> 463 echo ' vmlinuz - Compressed boot(zboot) image'
>> 464 echo ' vmlinuz.ecoff - ECOFF zboot image'
>> 465 echo ' vmlinuz.bin - Raw binary zboot image'
>> 466 echo ' vmlinuz.srec - SREC zboot image'
>> 467 echo ' uImage - U-Boot image'
>> 468 echo ' uImage.bin - U-Boot image (uncompressed)'
>> 469 echo ' uImage.bz2 - U-Boot image (bz2)'
>> 470 echo ' uImage.gz - U-Boot image (gzip)'
>> 471 echo ' uImage.lzma - U-Boot image (lzma)'
>> 472 echo ' uImage.lzo - U-Boot image (lzo)'
>> 473 echo ' uzImage.bin - U-Boot image (self-extracting)'
>> 474 echo
>> 475 echo ' These will be default as appropriate for a configured platform.'
>> 476 echo
>> 477 echo ' If you are targeting a system supported by generic kernels you may'
>> 478 echo ' configure the kernel for a given architecture target like so:'
>> 479 echo
>> 480 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
>> 481 echo
>> 482 echo ' Where BOARDS is some subset of the following:'
>> 483 for board in $(sort $(BOARDS)); do echo " $${board}"; done
186 echo 484 echo
>> 485 echo ' Specifically the following generic default configurations are'
>> 486 echo ' supported:'
>> 487 echo
>> 488 $(foreach cfg,$(generic_defconfigs),
>> 489 printf " %-24s - Build generic kernel for $(call describe_generic_defconfig,$(cfg))\n" $(cfg);)
>> 490 echo
>> 491 echo ' The following legacy default configurations have been converted to'
>> 492 echo ' generic and can still be used:'
>> 493 echo
>> 494 $(foreach cfg,$(sort $(legacy_defconfigs)),
>> 495 printf " %-24s - Build $($(cfg)-y)\n" $(cfg);)
>> 496 echo
>> 497 echo ' Otherwise, the following default configurations are available:'
>> 498 endef
>> 499
>> 500 generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
>> 501 generic_defconfigs :=
>> 502
>> 503 #
>> 504 # If the user generates a generic kernel configuration without specifying a
>> 505 # list of boards to include the config fragments for, default to including all
>> 506 # available board config fragments.
>> 507 #
>> 508 ifeq ($(BOARDS),)
>> 509 BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
>> 510 endif
>> 511
>> 512 #
>> 513 # Generic kernel configurations which merge generic_defconfig with the
>> 514 # appropriate config fragments from arch/mips/configs/generic/, resulting in
>> 515 # the ability to easily configure the kernel for a given architecture,
>> 516 # endianness & set of boards without duplicating the needed configuration in
>> 517 # hundreds of defconfig files.
>> 518 #
>> 519 define gen_generic_defconfigs
>> 520 $(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
>> 521 target := $(bits)$(rev)$(filter el,$(endian))_defconfig
>> 522 generic_defconfigs += $$(target)
>> 523 $$(target): $(generic_config_dir)/$(bits)$(rev).config
>> 524 $$(target): $(generic_config_dir)/$(endian).config
>> 525 )))
>> 526 endef
>> 527
>> 528 $(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
>> 529 $(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
>> 530
>> 531 define describe_generic_defconfig
>> 532 $(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(subst el, little endian,$(patsubst %_defconfig,%,$(1)))))
187 endef 533 endef
>> 534
>> 535 .PHONY: $(generic_defconfigs)
>> 536 $(generic_defconfigs):
>> 537 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
>> 538 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \
>> 539 grep -Ev '^#'
>> 540 $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@
>> 541 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \
>> 542 KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null
>> 543 $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \
>> 544 $(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \
>> 545 "$(origin BOARDS)" $(BOARDS)
>> 546 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
>> 547
>> 548 #
>> 549 # Prevent generic merge_config rules attempting to merge single fragments
>> 550 #
>> 551 $(generic_config_dir)/%.config: ;
>> 552
>> 553 #
>> 554 # Prevent direct use of generic_defconfig, which is intended to be used as the
>> 555 # basis of the various ISA-specific targets generated above.
>> 556 #
>> 557 .PHONY: generic_defconfig
>> 558 generic_defconfig:
>> 559 $(Q)echo "generic_defconfig is not intended for direct use, but should instead be"
>> 560 $(Q)echo "used via an ISA-specific target from the following list:"
>> 561 $(Q)echo
>> 562 $(Q)for cfg in $(generic_defconfigs); do echo " $${cfg}"; done
>> 563 $(Q)echo
>> 564 $(Q)false
>> 565
>> 566 #
>> 567 # Legacy defconfig compatibility - these targets used to be real defconfigs but
>> 568 # now that the boards have been converted to use the generic kernel they are
>> 569 # wrappers around the generic rules above.
>> 570 #
>> 571 legacy_defconfigs += ocelot_defconfig
>> 572 ocelot_defconfig-y := 32r2el_defconfig BOARDS=ocelot
>> 573
>> 574 legacy_defconfigs += sead3_defconfig
>> 575 sead3_defconfig-y := 32r2el_defconfig BOARDS=sead-3
>> 576
>> 577 legacy_defconfigs += sead3micro_defconfig
>> 578 sead3micro_defconfig-y := micro32r2el_defconfig BOARDS=sead-3
>> 579
>> 580 legacy_defconfigs += xilfpga_defconfig
>> 581 xilfpga_defconfig-y := 32r2el_defconfig BOARDS=xilfpga
>> 582
>> 583 legacy_defconfigs += pistachio_defconfig
>> 584 pistachio_defconfig-y := 32r2el_defconfig BOARDS=marduk
>> 585
>> 586 .PHONY: $(legacy_defconfigs)
>> 587 $(legacy_defconfigs):
>> 588 $(Q)$(MAKE) -f $(srctree)/Makefile $($@-y)
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