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
5 !! 4 # for more details.
6 boot := arch/loongarch/boot !! 5 #
7 !! 6 # Copyright (C) 1994, 95, 96, 2003 by Ralf Baechle
8 KBUILD_DEFCONFIG := loongson3_defconfig !! 7 # DECStation modifications by Paul M. Antoine, 1996
9 KBUILD_DTBS := dtbs !! 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. Remember to do have actions
>> 12 # for "archclean" cleaning up for this architecture.
>> 13 #
10 14
11 image-name-y := vmlinux !! 15 archscripts: scripts_basic
12 image-name-$(CONFIG_EFI_ZBOOT) := vmlinuz !! 16 $(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs
13 17
14 ifndef CONFIG_EFI_STUB !! 18 KBUILD_DEFCONFIG := 32r2el_defconfig
15 KBUILD_IMAGE := $(boot)/vmlinux.elf <<
16 else <<
17 KBUILD_IMAGE := $(boot)/$(image-name-y).efi <<
18 endif <<
19 19
20 # 20 #
21 # Select the object file format to substitute 21 # Select the object file format to substitute into the linker script.
22 # 22 #
23 64bit-tool-archpref = loongarch64 !! 23 ifdef CONFIG_CPU_LITTLE_ENDIAN
24 32bit-bfd = elf32-loongarch !! 24 32bit-tool-archpref = mipsel
25 64bit-bfd = elf64-loongarch !! 25 64bit-tool-archpref = mips64el
26 32bit-emul = elf32loongarch !! 26 32bit-bfd = elf32-tradlittlemips
27 64bit-emul = elf64loongarch !! 27 64bit-bfd = elf64-tradlittlemips
28 !! 28 32bit-emul = elf32ltsmip
29 CC_FLAGS_FPU := -mfpu=64 !! 29 64bit-emul = elf64ltsmip
30 CC_FLAGS_NO_FPU := -msoft-float !! 30 else
31 !! 31 32bit-tool-archpref = mips
32 ifdef CONFIG_UNWINDER_ORC !! 32 64bit-tool-archpref = mips64
33 orc_hash_h := arch/$(SRCARCH)/include/generate !! 33 32bit-bfd = elf32-tradbigmips
34 orc_hash_sh := $(srctree)/scripts/orc_hash.sh !! 34 64bit-bfd = elf64-tradbigmips
35 targets += $(orc_hash_h) !! 35 32bit-emul = elf32btsmip
36 quiet_cmd_orc_hash = GEN $@ !! 36 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 37 endif
48 38
>> 39 ifdef CONFIG_32BIT
>> 40 tool-archpref = $(32bit-tool-archpref)
>> 41 UTS_MACHINE := mips
>> 42 endif
49 ifdef CONFIG_64BIT 43 ifdef CONFIG_64BIT
50 tool-archpref = $(64bit-tool-archpre 44 tool-archpref = $(64bit-tool-archpref)
51 UTS_MACHINE := loongarch64 !! 45 UTS_MACHINE := mips64
52 endif 46 endif
53 47
54 ifneq ($(SUBARCH),$(ARCH)) 48 ifneq ($(SUBARCH),$(ARCH))
55 ifeq ($(CROSS_COMPILE),) 49 ifeq ($(CROSS_COMPILE),)
56 CROSS_COMPILE := $(call cc-cross-prefix, $ 50 CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-)
57 endif 51 endif
58 endif 52 endif
59 53
60 ifdef CONFIG_64BIT !! 54 ifdef CONFIG_FUNCTION_GRAPH_TRACER
61 ld-emul = $(64bit-emul) !! 55 ifndef KBUILD_MCOUNT_RA_ADDRESS
62 cflags-y += -mabi=lp64s !! 56 ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
>> 57 cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
>> 58 endif
>> 59 endif
63 endif 60 endif
>> 61 cflags-y += $(call cc-option, -mno-check-zero-division)
64 62
65 cflags-y += -pipe $(CC_ !! 63 ifdef CONFIG_32BIT
66 LDFLAGS_vmlinux += -static -n !! 64 ld-emul = $(32bit-emul)
>> 65 vmlinux-32 = vmlinux
>> 66 vmlinux-64 = vmlinux.64
67 67
68 # When the assembler supports explicit relocat !! 68 cflags-y += -mabi=32
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 69 endif
97 70
98 KBUILD_AFLAGS += $(call cc-o !! 71 ifdef CONFIG_64BIT
99 KBUILD_CFLAGS += $(call cc-o !! 72 ld-emul = $(64bit-emul)
100 KBUILD_AFLAGS += $(call cc-o !! 73 vmlinux-32 = vmlinux.32
101 KBUILD_CFLAGS += $(call cc-o !! 74 vmlinux-64 = vmlinux
102 75
103 ifdef CONFIG_OBJTOOL !! 76 cflags-y += -mabi=64
104 KBUILD_CFLAGS += -fno-jump-t <<
105 endif 77 endif
106 78
107 KBUILD_RUSTFLAGS += --target=lo !! 79 all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32)
108 KBUILD_RUSTFLAGS_KERNEL += -Zdirect-ac !! 80 all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64)
109 KBUILD_RUSTFLAGS_MODULE += -Zdirect-ac !! 81 all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz
>> 82
>> 83 #
>> 84 # GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
>> 85 # code since it only slows down the whole thing. At some point we might make
>> 86 # use of global pointer optimizations but their use of $28 conflicts with
>> 87 # the current pointer optimization.
>> 88 #
>> 89 # The DECStation requires an ECOFF kernel for remote booting, other MIPS
>> 90 # machines may also. Since BFD is incredibly buggy with respect to
>> 91 # crossformat linking we rely on the elf2ecoff tool for format conversion.
>> 92 #
>> 93 cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
>> 94 cflags-y += -msoft-float
>> 95 LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
>> 96 KBUILD_AFLAGS_MODULE += -mlong-calls
>> 97 KBUILD_CFLAGS_MODULE += -mlong-calls
110 98
111 ifeq ($(CONFIG_RELOCATABLE),y) 99 ifeq ($(CONFIG_RELOCATABLE),y)
112 KBUILD_CFLAGS_KERNEL += -fPIE !! 100 LDFLAGS_vmlinux += --emit-relocs
113 KBUILD_RUSTFLAGS_KERNEL += -Crelocatio <<
114 LDFLAGS_vmlinux += -static -pi <<
115 endif 101 endif
116 102
117 cflags-y += $(call cc-option, -mno-check-zero- !! 103 #
>> 104 # pass -msoft-float to GAS if it supports it. However on newer binutils
>> 105 # (specifically newer than 2.24.51.20140728) we then also need to explicitly
>> 106 # set ".set hardfloat" in all files which manipulate floating point registers.
>> 107 #
>> 108 ifneq ($(call as-option,-Wa$(comma)-msoft-float,),)
>> 109 cflags-y += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float
>> 110 endif
118 111
119 ifndef CONFIG_KASAN !! 112 cflags-y += -ffreestanding
120 cflags-y += -fno-builtin-memcpy -fno-builtin-m !! 113
>> 114 #
>> 115 # We explicitly add the endianness specifier if needed, this allows
>> 116 # to compile kernels with a toolchain for the other endianness. We
>> 117 # carefully avoid to add it redundantly because gcc 3.3/3.4 complains
>> 118 # when fed the toolchain default!
>> 119 #
>> 120 # Certain gcc versions up to gcc 4.1.1 (probably 4.2-subversion as of
>> 121 # 2006-10-10 don't properly change the predefined symbols if -EB / -EL
>> 122 # are used, so we kludge that here. A bug has been filed at
>> 123 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413.
>> 124 #
>> 125 undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
>> 126 undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
>> 127 predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
>> 128 predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
>> 129 cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be))
>> 130 cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))
>> 131
>> 132 cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
>> 133 -fno-omit-frame-pointer
>> 134
>> 135 # Some distribution-specific toolchains might pass the -fstack-check
>> 136 # option during the build, which adds a simple stack-probe at the beginning
>> 137 # of every function. This stack probe is to ensure that there is enough
>> 138 # stack space, else a SEGV is generated. This is not desirable for MIPS
>> 139 # as kernel stacks are small, placed in unmapped virtual memory, and do not
>> 140 # grow when overflowed. Especially on SGI IP27 platforms, this check will
>> 141 # lead to a NULL pointer dereference in _raw_spin_lock_irq.
>> 142 #
>> 143 # In disassembly, this stack probe appears at the top of a function as:
>> 144 # sd zero,<offset>(sp)
>> 145 # Where <offset> is a negative value.
>> 146 #
>> 147 cflags-y += -fno-stack-check
>> 148
>> 149 #
>> 150 # CPU-dependent compiler/assembler options for optimization.
>> 151 #
>> 152 cflags-$(CONFIG_CPU_R3000) += -march=r3000
>> 153 cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
>> 154 cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
>> 155 cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
>> 156 cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
>> 157 cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
>> 158 cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
>> 159 -Wa,-mips32 -Wa,--trap
>> 160 cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
>> 161 -Wa,-mips32r2 -Wa,--trap
>> 162 cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg
>> 163 cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
>> 164 -Wa,-mips64 -Wa,--trap
>> 165 cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
>> 166 -Wa,-mips64r2 -Wa,--trap
>> 167 cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
>> 168 cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
>> 169 cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \
>> 170 -Wa,--trap
>> 171 cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
>> 172 -Wa,--trap
>> 173 cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
>> 174 -Wa,--trap
>> 175 cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
>> 176 -Wa,--trap
>> 177 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
>> 178 -Wa,--trap
>> 179 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx)
>> 180 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d)
>> 181 cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap
>> 182 cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
>> 183 -Wa,--trap
>> 184 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
>> 185 ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
>> 186 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
>> 187 endif
>> 188 cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
>> 189 cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
>> 190
>> 191 cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
>> 192 cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
>> 193 cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
>> 194
>> 195 # For smartmips configurations, there are hundreds of warnings due to ISA overrides
>> 196 # in assembly and header files. smartmips is only supported for MIPS32r1 onwards
>> 197 # and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
>> 198 # similar directives in the kernel will spam the build logs with the following warnings:
>> 199 # Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
>> 200 # or
>> 201 # Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
>> 202 # Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
>> 203 # been fixed properly.
>> 204 mips-cflags := $(cflags-y)
>> 205 ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
>> 206 smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips)
>> 207 cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn
>> 208 endif
>> 209 ifeq ($(CONFIG_CPU_MICROMIPS),y)
>> 210 micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips)
>> 211 cflags-$(micromips-ase) += -mmicromips
>> 212 endif
>> 213 ifeq ($(CONFIG_CPU_HAS_MSA),y)
>> 214 toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
>> 215 cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA
>> 216 endif
>> 217 toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt)
>> 218 cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT
>> 219 # For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which
>> 220 # only warns
>> 221 xpa-cflags-y := $(mips-cflags)
>> 222 xpa-cflags-$(micromips-ase) += -mmicromips -Wa$(comma)-fatal-warnings
>> 223 toolchain-xpa := $(call cc-option-yn,$(xpa-cflags-y) -mxpa)
>> 224 cflags-$(toolchain-xpa) += -DTOOLCHAIN_SUPPORTS_XPA
>> 225 toolchain-crc := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc)
>> 226 cflags-$(toolchain-crc) += -DTOOLCHAIN_SUPPORTS_CRC
>> 227
>> 228 #
>> 229 # Firmware support
>> 230 #
>> 231 libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/
>> 232 libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
>> 233 libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
>> 234 libs-y += arch/mips/fw/lib/
>> 235
>> 236 #
>> 237 # Kernel compression
>> 238 #
>> 239 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
>> 240 COMPRESSION_FNAME = vmlinuz
>> 241 else
>> 242 COMPRESSION_FNAME = vmlinux
>> 243 endif
>> 244
>> 245 #
>> 246 # Board-dependent options and extra files
>> 247 #
>> 248 include arch/mips/Kbuild.platforms
>> 249
>> 250 ifdef CONFIG_PHYSICAL_START
>> 251 load-y = $(CONFIG_PHYSICAL_START)
121 endif 252 endif
122 253
123 load-y = 0x9000000000200000 !! 254 # Sign-extend the entry point to 64 bits if retrieved as a 32-bit number.
124 bootvars-y = VMLINUX_LOAD_ADDRESS=$(load- !! 255 entry-y = $(shell $(OBJDUMP) -f vmlinux 2>/dev/null \
>> 256 | sed -n '/^start address / { \
>> 257 s/^.* //; \
>> 258 s/0x\([0-7].......\)$$/0x00000000\1/; \
>> 259 s/0x\(........\)$$/0xffffffff\1/; p }')
>> 260
>> 261 cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
>> 262 drivers-$(CONFIG_PCI) += arch/mips/pci/
>> 263
>> 264 #
>> 265 # Automatically detect the build format. By default we choose
>> 266 # the elf format according to the load address.
>> 267 # We can always force a build with a 64-bits symbol format by
>> 268 # passing 'KBUILD_SYM32=no' option to the make's command line.
>> 269 #
>> 270 ifdef CONFIG_64BIT
>> 271 ifndef KBUILD_SYM32
>> 272 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
>> 273 KBUILD_SYM32 = y
>> 274 endif
>> 275 endif
125 276
126 drivers-$(CONFIG_PCI) += arch/loonga !! 277 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
>> 278 cflags-y += -msym32 -DKBUILD_64BIT_SYM32
>> 279 else
>> 280 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
>> 281 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
>> 282 endif
>> 283 endif
>> 284 endif
127 285
128 KBUILD_AFLAGS += $(cflags-y) 286 KBUILD_AFLAGS += $(cflags-y)
129 KBUILD_CFLAGS += $(cflags-y) 287 KBUILD_CFLAGS += $(cflags-y)
130 KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(lo 288 KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
>> 289 KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
>> 290
>> 291 bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
>> 292 VMLINUX_ENTRY_ADDRESS=$(entry-y) \
>> 293 PLATFORM="$(platform-y)" \
>> 294 ITS_INPUTS="$(its-y)"
>> 295 ifdef CONFIG_32BIT
>> 296 bootvars-y += ADDR_BITS=32
>> 297 endif
>> 298 ifdef CONFIG_64BIT
>> 299 bootvars-y += ADDR_BITS=64
>> 300 endif
131 301
132 # This is required to get dwarf unwinding tabl 302 # This is required to get dwarf unwinding tables into .debug_frame
133 # instead of .eh_frame so we don't discard the 303 # instead of .eh_frame so we don't discard them.
134 KBUILD_CFLAGS += -fno-asynchronous-unwind-tabl 304 KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
135 305
136 ifdef CONFIG_ARCH_STRICT_ALIGN !! 306 LDFLAGS += -m $(ld-emul)
137 # Don't emit unaligned accesses. !! 307
138 # Not all LoongArch cores support unaligned ac !! 308 ifdef CONFIG_MIPS
139 # rely on others to provide emulation for thes !! 309 CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
140 KBUILD_CFLAGS += $(call cc-option,-mstrict-ali !! 310 egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
141 else !! 311 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
142 # Optimise for performance on hardware support !! 312 ifdef CONFIG_64BIT
143 KBUILD_CFLAGS += $(call cc-option,-mno-strict- !! 313 CHECKFLAGS += -m64
>> 314 endif
144 endif 315 endif
145 316
146 KBUILD_CFLAGS += -isystem $(shell $(CC) -print !! 317 OBJCOPYFLAGS += --remove-section=.reginfo
147 318
148 KBUILD_LDFLAGS += -m $(ld-emul) !! 319 head-y := arch/mips/kernel/head.o
149 320
150 ifdef need-compiler !! 321 libs-y += arch/mips/lib/
151 CHECKFLAGS += $(shell $(CC) $(KBUILD_CPPFLAGS) !! 322 libs-y += arch/mips/math-emu/
152 grep -E -vw '__GNUC_(MINOR_|PATCHLEVEL <<
153 sed -e "s/^\#define /-D'/" -e "s/ /'=' <<
154 endif <<
155 323
156 libs-y += arch/loongarch/lib/ !! 324 # See arch/mips/Kbuild for content of core part of the kernel
157 libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/ !! 325 core-y += arch/mips/
158 326
159 drivers-y += arch/loongarch/cryp !! 327 drivers-$(CONFIG_MIPS_CRC_SUPPORT) += arch/mips/crypto/
>> 328 drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/
160 329
161 # suspend and hibernation support 330 # suspend and hibernation support
162 drivers-$(CONFIG_PM) += arch/loongarch/powe !! 331 drivers-$(CONFIG_PM) += arch/mips/power/
163 332
164 ifeq ($(KBUILD_EXTMOD),) !! 333 # boot image targets (arch/mips/boot/)
165 prepare: vdso_prepare !! 334 boot-y := vmlinux.bin
166 vdso_prepare: prepare0 !! 335 boot-y += vmlinux.ecoff
167 $(Q)$(MAKE) $(build)=arch/loongarch/vd !! 336 boot-y += vmlinux.srec
>> 337 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
>> 338 boot-y += uImage
>> 339 boot-y += uImage.bin
>> 340 boot-y += uImage.bz2
>> 341 boot-y += uImage.gz
>> 342 boot-y += uImage.lzma
>> 343 boot-y += uImage.lzo
>> 344 endif
>> 345 boot-y += vmlinux.itb
>> 346 boot-y += vmlinux.gz.itb
>> 347 boot-y += vmlinux.bz2.itb
>> 348 boot-y += vmlinux.lzma.itb
>> 349 boot-y += vmlinux.lzo.itb
>> 350
>> 351 # compressed boot image targets (arch/mips/boot/compressed/)
>> 352 bootz-y := vmlinuz
>> 353 bootz-y += vmlinuz.bin
>> 354 bootz-y += vmlinuz.ecoff
>> 355 bootz-y += vmlinuz.srec
>> 356 ifeq ($(shell expr $(zload-y) \< 0xffffffff80000000 2> /dev/null), 0)
>> 357 bootz-y += uzImage.bin
>> 358 endif
>> 359
>> 360 ifdef CONFIG_LASAT
>> 361 rom.bin rom.sw: vmlinux
>> 362 $(Q)$(MAKE) $(build)=arch/mips/lasat/image \
>> 363 $(bootvars-y) $@
>> 364 endif
>> 365
>> 366 #
>> 367 # Some machines like the Indy need 32-bit ELF binaries for booting purposes.
>> 368 # Other need ECOFF, so we build a 32-bit ELF binary for them which we then
>> 369 # convert to ECOFF using elf2ecoff.
>> 370 #
>> 371 quiet_cmd_32 = OBJCOPY $@
>> 372 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
>> 373 vmlinux.32: vmlinux
>> 374 $(call cmd,32)
>> 375
>> 376 #
>> 377 # The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
>> 378 # ELF files from 32-bit files by conversion.
>> 379 #
>> 380 quiet_cmd_64 = OBJCOPY $@
>> 381 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
>> 382 vmlinux.64: vmlinux
>> 383 $(call cmd,64)
>> 384
>> 385 all: $(all-y)
>> 386
>> 387 # boot
>> 388 $(boot-y): $(vmlinux-32) FORCE
>> 389 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
>> 390 $(bootvars-y) arch/mips/boot/$@
>> 391
>> 392 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
>> 393 # boot/compressed
>> 394 $(bootz-y): $(vmlinux-32) FORCE
>> 395 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
>> 396 $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
>> 397 else
>> 398 vmlinuz: FORCE
>> 399 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
>> 400 /bin/false
168 endif 401 endif
169 402
170 vdso-install-y += arch/loongarch/vdso/vdso.so. <<
171 403
172 all: $(notdir $(KBUILD_IMAGE)) $(KBUILD_DTB !! 404 CLEAN_FILES += vmlinux.32 vmlinux.64
>> 405
>> 406 # device-trees
>> 407 core-$(CONFIG_BUILTIN_DTB) += arch/mips/boot/dts/
173 408
174 vmlinuz.efi: vmlinux.efi !! 409 %.dtb %.dtb.S %.dtb.o: | scripts
>> 410 $(Q)$(MAKE) $(build)=arch/mips/boot/dts arch/mips/boot/dts/$@
175 411
176 vmlinux.elf vmlinux.efi vmlinuz.efi: vmlinux !! 412 PHONY += dtbs
177 $(Q)$(MAKE) $(build)=$(boot) $(bootvar !! 413 dtbs: scripts
>> 414 $(Q)$(MAKE) $(build)=arch/mips/boot/dts
>> 415
>> 416 PHONY += dtbs_install
>> 417 dtbs_install:
>> 418 $(Q)$(MAKE) $(dtbinst)=arch/mips/boot/dts
>> 419
>> 420 archprepare:
>> 421 ifdef CONFIG_MIPS32_N32
>> 422 @$(kecho) ' Checking missing-syscalls for N32'
>> 423 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
>> 424 endif
>> 425 ifdef CONFIG_MIPS32_O32
>> 426 @$(kecho) ' Checking missing-syscalls for O32'
>> 427 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
>> 428 endif
178 429
179 install: 430 install:
180 $(Q)install -D -m 755 $(KBUILD_IMAGE) !! 431 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
>> 432 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
>> 433 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
>> 434 endif
181 $(Q)install -D -m 644 .config $(INSTAL 435 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
182 $(Q)install -D -m 644 System.map $(INS 436 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
183 437
>> 438 archclean:
>> 439 $(Q)$(MAKE) $(clean)=arch/mips/boot
>> 440 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
>> 441 $(Q)$(MAKE) $(clean)=arch/mips/boot/tools
>> 442 $(Q)$(MAKE) $(clean)=arch/mips/lasat
>> 443
184 define archhelp 444 define archhelp
185 echo ' install - install 445 echo ' install - install kernel into $(INSTALL_PATH)'
>> 446 echo ' vmlinux.ecoff - ECOFF boot image'
>> 447 echo ' vmlinux.bin - Raw binary boot image'
>> 448 echo ' vmlinux.srec - SREC boot image'
>> 449 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)'
>> 450 echo ' vmlinuz - Compressed boot(zboot) image'
>> 451 echo ' vmlinuz.ecoff - ECOFF zboot image'
>> 452 echo ' vmlinuz.bin - Raw binary zboot image'
>> 453 echo ' vmlinuz.srec - SREC zboot image'
>> 454 echo ' uImage - U-Boot image'
>> 455 echo ' uImage.bin - U-Boot image (uncompressed)'
>> 456 echo ' uImage.bz2 - U-Boot image (bz2)'
>> 457 echo ' uImage.gz - U-Boot image (gzip)'
>> 458 echo ' uImage.lzma - U-Boot image (lzma)'
>> 459 echo ' uImage.lzo - U-Boot image (lzo)'
>> 460 echo ' uzImage.bin - U-Boot image (self-extracting)'
>> 461 echo ' dtbs - Device-tree blobs for enabled boards'
>> 462 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
>> 463 echo
>> 464 echo ' These will be default as appropriate for a configured platform.'
>> 465 echo
>> 466 echo ' If you are targeting a system supported by generic kernels you may'
>> 467 echo ' configure the kernel for a given architecture target like so:'
>> 468 echo
>> 469 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
>> 470 echo
>> 471 echo ' Where BOARDS is some subset of the following:'
>> 472 for board in $(sort $(BOARDS)); do echo " $${board}"; done
>> 473 echo
>> 474 echo ' Specifically the following generic default configurations are'
>> 475 echo ' supported:'
>> 476 echo
>> 477 $(foreach cfg,$(generic_defconfigs),
>> 478 printf " %-24s - Build generic kernel for $(call describe_generic_defconfig,$(cfg))\n" $(cfg);)
186 echo 479 echo
>> 480 echo ' The following legacy default configurations have been converted to'
>> 481 echo ' generic and can still be used:'
>> 482 echo
>> 483 $(foreach cfg,$(sort $(legacy_defconfigs)),
>> 484 printf " %-24s - Build $($(cfg)-y)\n" $(cfg);)
>> 485 echo
>> 486 echo ' Otherwise, the following default configurations are available:'
>> 487 endef
>> 488
>> 489 generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
>> 490 generic_defconfigs :=
>> 491
>> 492 #
>> 493 # If the user generates a generic kernel configuration without specifying a
>> 494 # list of boards to include the config fragments for, default to including all
>> 495 # available board config fragments.
>> 496 #
>> 497 ifeq ($(BOARDS),)
>> 498 BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
>> 499 endif
>> 500
>> 501 #
>> 502 # Generic kernel configurations which merge generic_defconfig with the
>> 503 # appropriate config fragments from arch/mips/configs/generic/, resulting in
>> 504 # the ability to easily configure the kernel for a given architecture,
>> 505 # endianness & set of boards without duplicating the needed configuration in
>> 506 # hundreds of defconfig files.
>> 507 #
>> 508 define gen_generic_defconfigs
>> 509 $(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
>> 510 target := $(bits)$(rev)$(filter el,$(endian))_defconfig
>> 511 generic_defconfigs += $$(target)
>> 512 $$(target): $(generic_config_dir)/$(bits)$(rev).config
>> 513 $$(target): $(generic_config_dir)/$(endian).config
>> 514 )))
>> 515 endef
>> 516
>> 517 $(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
>> 518 $(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
>> 519
>> 520 define describe_generic_defconfig
>> 521 $(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(subst el, little endian,$(patsubst %_defconfig,%,$(1)))))
187 endef 522 endef
>> 523
>> 524 .PHONY: $(generic_defconfigs)
>> 525 $(generic_defconfigs):
>> 526 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
>> 527 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \
>> 528 grep -Ev '^#'
>> 529 $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@
>> 530 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \
>> 531 KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null
>> 532 $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \
>> 533 $(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \
>> 534 "$(origin BOARDS)" $(BOARDS)
>> 535 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
>> 536
>> 537 #
>> 538 # Prevent generic merge_config rules attempting to merge single fragments
>> 539 #
>> 540 $(generic_config_dir)/%.config: ;
>> 541
>> 542 #
>> 543 # Prevent direct use of generic_defconfig, which is intended to be used as the
>> 544 # basis of the various ISA-specific targets generated above.
>> 545 #
>> 546 .PHONY: generic_defconfig
>> 547 generic_defconfig:
>> 548 $(Q)echo "generic_defconfig is not intended for direct use, but should instead be"
>> 549 $(Q)echo "used via an ISA-specific target from the following list:"
>> 550 $(Q)echo
>> 551 $(Q)for cfg in $(generic_defconfigs); do echo " $${cfg}"; done
>> 552 $(Q)echo
>> 553 $(Q)false
>> 554
>> 555 #
>> 556 # Legacy defconfig compatibility - these targets used to be real defconfigs but
>> 557 # now that the boards have been converted to use the generic kernel they are
>> 558 # wrappers around the generic rules above.
>> 559 #
>> 560 legacy_defconfigs += ocelot_defconfig
>> 561 ocelot_defconfig-y := 32r2el_defconfig BOARDS=ocelot
>> 562
>> 563 legacy_defconfigs += sead3_defconfig
>> 564 sead3_defconfig-y := 32r2el_defconfig BOARDS=sead-3
>> 565
>> 566 legacy_defconfigs += sead3micro_defconfig
>> 567 sead3micro_defconfig-y := micro32r2el_defconfig BOARDS=sead-3
>> 568
>> 569 legacy_defconfigs += xilfpga_defconfig
>> 570 xilfpga_defconfig-y := 32r2el_defconfig BOARDS=xilfpga
>> 571
>> 572 .PHONY: $(legacy_defconfigs)
>> 573 $(legacy_defconfigs):
>> 574 $(Q)$(MAKE) -f $(srctree)/Makefile $($@-y)
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