1 # 1 #
2 # arch/arm64/Makefile <<
3 # <<
4 # This file is included by the global makefile <<
5 # architecture-specific flags and dependencies <<
6 # <<
7 # This file is subject to the terms and condit 2 # This file is subject to the terms and conditions of the GNU General Public
8 # License. See the file "COPYING" in the main 3 # License. See the file "COPYING" in the main directory of this archive
9 # for more details. 4 # for more details.
10 # 5 #
11 # Copyright (C) 1995-2001 by Russell King !! 6 # Copyright (C) 1994, 95, 96, 2003 by Ralf Baechle
12 !! 7 # DECStation modifications by Paul M. Antoine, 1996
13 LDFLAGS_vmlinux :=--no-undefined -X --pic-vene !! 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 #
14 14
15 ifeq ($(CONFIG_RELOCATABLE), y) !! 15 archscripts: scripts_basic
16 # Pass --no-apply-dynamic-relocs to restore pr !! 16 $(Q)$(MAKE) $(build)=arch/mips/tools elf-entry
17 # for relative relocs, since this leads to bet !! 17 ifeq ($(CONFIG_CPU_LOONGSON3_WORKAROUNDS),y)
18 # with the relocation offsets always being zer !! 18 $(Q)$(MAKE) $(build)=arch/mips/tools loongson3-llsc-check
19 LDFLAGS_vmlinux += -shared -Bsymbolic <<
20 $(call ld-option, --no <<
21 endif 19 endif
>> 20 $(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs
22 21
23 ifeq ($(CONFIG_ARM64_ERRATUM_843419),y) !! 22 KBUILD_DEFCONFIG := 32r2el_defconfig
24 ifeq ($(CONFIG_ARM64_LD_HAS_FIX_ERRATUM_8434 !! 23 KBUILD_DTBS := dtbs
25 LDFLAGS_vmlinux += --fix-cortex-a53-843419 !! 24
>> 25 #
>> 26 # Select the object file format to substitute into the linker script.
>> 27 #
>> 28 ifdef CONFIG_CPU_LITTLE_ENDIAN
>> 29 32bit-tool-archpref = mipsel
>> 30 64bit-tool-archpref = mips64el
>> 31 32bit-bfd = elf32-tradlittlemips
>> 32 64bit-bfd = elf64-tradlittlemips
>> 33 32bit-emul = elf32ltsmip
>> 34 64bit-emul = elf64ltsmip
>> 35 else
>> 36 32bit-tool-archpref = mips
>> 37 64bit-tool-archpref = mips64
>> 38 32bit-bfd = elf32-tradbigmips
>> 39 64bit-bfd = elf64-tradbigmips
>> 40 32bit-emul = elf32btsmip
>> 41 64bit-emul = elf64btsmip
>> 42 endif
>> 43
>> 44 ifdef CONFIG_32BIT
>> 45 tool-archpref = $(32bit-tool-archpref)
>> 46 UTS_MACHINE := mips
>> 47 endif
>> 48 ifdef CONFIG_64BIT
>> 49 tool-archpref = $(64bit-tool-archpref)
>> 50 UTS_MACHINE := mips64
>> 51 endif
>> 52
>> 53 ifdef cross_compiling
>> 54 ifeq ($(CROSS_COMPILE),)
>> 55 CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-)
26 endif 56 endif
27 endif 57 endif
28 58
29 cc_has_k_constraint := $(call try-run,echo !! 59 ifdef CONFIG_FUNCTION_GRAPH_TRACER
30 'int main(void) { !! 60 ifndef KBUILD_MCOUNT_RA_ADDRESS
31 asm volatile("and w0, w0, %w0" !! 61 ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
32 return 0; !! 62 cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
33 }' | $(CC) -S -x c -o "$$TMP" -,,-DCON !! 63 endif
34 <<
35 ifeq ($(CONFIG_BROKEN_GAS_INST),y) <<
36 $(warning Detected assembler with broken .inst <<
37 endif <<
38 <<
39 # The GCC option -ffreestanding is required in <<
40 # ARM/NEON intrinsics in a non C99-compliant e <<
41 CC_FLAGS_FPU := -ffreestanding <<
42 # Enable <arm_neon.h> <<
43 CC_FLAGS_FPU += -isystem $(shell $(CC) -pri <<
44 CC_FLAGS_NO_FPU := -mgeneral-regs-only <<
45 <<
46 KBUILD_CFLAGS += $(CC_FLAGS_NO_FPU) \ <<
47 $(compat_vdso) $(cc_has_k_c <<
48 KBUILD_CFLAGS += $(call cc-disable-warning, <<
49 KBUILD_AFLAGS += $(compat_vdso) <<
50 <<
51 KBUILD_RUSTFLAGS += --target=aarch64-unknown-n <<
52 <<
53 KBUILD_CFLAGS += $(call cc-option,-mabi=lp64 <<
54 KBUILD_AFLAGS += $(call cc-option,-mabi=lp64 <<
55 <<
56 # Avoid generating .eh_frame* sections. <<
57 ifneq ($(CONFIG_UNWIND_TABLES),y) <<
58 KBUILD_CFLAGS += -fno-asynchronous-unwind-ta <<
59 KBUILD_AFLAGS += -fno-asynchronous-unwind-ta <<
60 KBUILD_RUSTFLAGS += -Cforce-unwind-tables=n <<
61 else <<
62 KBUILD_CFLAGS += -fasynchronous-unwind-table <<
63 KBUILD_AFLAGS += -fasynchronous-unwind-table <<
64 KBUILD_RUSTFLAGS += -Cforce-unwind-tables=y -Z <<
65 endif <<
66 <<
67 ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y) <<
68 prepare: stack_protector_prepare <<
69 stack_protector_prepare: prepare0 <<
70 $(eval KBUILD_CFLAGS += -mstack-protec <<
71 -mstack-protec <<
72 -mstack-protec <<
73 awk '{if ($$2 == "TSK_ <<
74 includ <<
75 endif <<
76 <<
77 ifeq ($(CONFIG_ARM64_BTI_KERNEL),y) <<
78 KBUILD_CFLAGS += -mbranch-protection=pac-ret <<
79 KBUILD_RUSTFLAGS += -Zbranch-protection=bti, <<
80 else ifeq ($(CONFIG_ARM64_PTR_AUTH_KERNEL),y) <<
81 KBUILD_RUSTFLAGS += -Zbranch-protection=pac- <<
82 ifeq ($(CONFIG_CC_HAS_BRANCH_PROT_PAC_RET),y <<
83 KBUILD_CFLAGS += -mbranch-protection=pac-r <<
84 else <<
85 KBUILD_CFLAGS += -msign-return-address=non <<
86 endif 64 endif
87 else <<
88 KBUILD_CFLAGS += $(call cc-option,-mbranch-p <<
89 endif 65 endif
>> 66 cflags-y += $(call cc-option, -mno-check-zero-division)
90 67
91 # Tell the assembler to support instructions f !! 68 ifdef CONFIG_32BIT
92 # architecture. !! 69 ld-emul = $(32bit-emul)
93 # !! 70 vmlinux-32 = vmlinux
94 # For non-integrated assemblers we'll pass thi !! 71 vmlinux-64 = vmlinux.64
95 # integrated assemblers we'll define ARM64_ASM !! 72
96 # inline usage. !! 73 cflags-y += -mabi=32
97 # <<
98 # We cannot pass the same arch flag to the com <<
99 # freely generate instructions which are not s <<
100 # versions, which would prevent a single kerne <<
101 # hardware. <<
102 ifeq ($(CONFIG_AS_HAS_ARMV8_5), y) <<
103 asm-arch := armv8.5-a <<
104 else ifeq ($(CONFIG_AS_HAS_ARMV8_4), y) <<
105 asm-arch := armv8.4-a <<
106 else ifeq ($(CONFIG_AS_HAS_ARMV8_3), y) <<
107 asm-arch := armv8.3-a <<
108 else ifeq ($(CONFIG_AS_HAS_ARMV8_2), y) <<
109 asm-arch := armv8.2-a <<
110 endif <<
111 <<
112 ifdef asm-arch <<
113 KBUILD_CFLAGS += -Wa,-march=$(asm-arch) \ <<
114 -DARM64_ASM_ARCH='"$(asm-ar <<
115 endif <<
116 <<
117 ifeq ($(CONFIG_SHADOW_CALL_STACK), y) <<
118 KBUILD_CFLAGS += -ffixed-x18 <<
119 KBUILD_RUSTFLAGS += -Zfixed-x18 <<
120 endif <<
121 <<
122 ifeq ($(CONFIG_CPU_BIG_ENDIAN), y) <<
123 KBUILD_CPPFLAGS += -mbig-endian <<
124 CHECKFLAGS += -D__AARCH64EB__ <<
125 # Prefer the baremetal ELF build target, but n <<
126 # it so fall back to the standard linux versio <<
127 KBUILD_LDFLAGS += -EB $(call ld-option, -maar <<
128 UTS_MACHINE := aarch64_be <<
129 else <<
130 KBUILD_CPPFLAGS += -mlittle-endian <<
131 CHECKFLAGS += -D__AARCH64EL__ <<
132 # Same as above, prefer ELF but fall back to l <<
133 KBUILD_LDFLAGS += -EL $(call ld-option, -maar <<
134 UTS_MACHINE := aarch64 <<
135 endif 74 endif
136 75
137 ifeq ($(CONFIG_LD_IS_LLD), y) !! 76 ifdef CONFIG_64BIT
138 KBUILD_LDFLAGS += -z norelro !! 77 ld-emul = $(64bit-emul)
>> 78 vmlinux-32 = vmlinux.32
>> 79 vmlinux-64 = vmlinux
>> 80
>> 81 cflags-y += -mabi=64
139 endif 82 endif
140 83
141 CHECKFLAGS += -D__aarch64__ !! 84 all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32)
>> 85 all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64)
>> 86 all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz
142 87
143 ifeq ($(CONFIG_DYNAMIC_FTRACE_WITH_CALL_OPS),y !! 88 #
144 KBUILD_CPPFLAGS += -DCC_USING_PATCHABLE_FUNC !! 89 # GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
145 CC_FLAGS_FTRACE := -fpatchable-function-entr !! 90 # code since it only slows down the whole thing. At some point we might make
146 else ifeq ($(CONFIG_DYNAMIC_FTRACE_WITH_ARGS), !! 91 # use of global pointer optimizations but their use of $28 conflicts with
147 KBUILD_CPPFLAGS += -DCC_USING_PATCHABLE_FUNC !! 92 # the current pointer optimization.
148 CC_FLAGS_FTRACE := -fpatchable-function-entr !! 93 #
>> 94 # The DECStation requires an ECOFF kernel for remote booting, other MIPS
>> 95 # machines may also. Since BFD is incredibly buggy with respect to
>> 96 # crossformat linking we rely on the elf2ecoff tool for format conversion.
>> 97 #
>> 98 cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
>> 99 cflags-y += -msoft-float
>> 100 LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
>> 101 KBUILD_AFLAGS_MODULE += -mlong-calls
>> 102 KBUILD_CFLAGS_MODULE += -mlong-calls
>> 103
>> 104 ifeq ($(CONFIG_RELOCATABLE),y)
>> 105 LDFLAGS_vmlinux += --emit-relocs
149 endif 106 endif
150 107
151 ifeq ($(CONFIG_KASAN_SW_TAGS), y) !! 108 #
152 KASAN_SHADOW_SCALE_SHIFT := 4 !! 109 # pass -msoft-float to GAS if it supports it. However on newer binutils
153 else ifeq ($(CONFIG_KASAN_GENERIC), y) !! 110 # (specifically newer than 2.24.51.20140728) we then also need to explicitly
154 KASAN_SHADOW_SCALE_SHIFT := 3 !! 111 # set ".set hardfloat" in all files which manipulate floating point registers.
>> 112 #
>> 113 ifneq ($(call as-option,-Wa$(comma)-msoft-float,),)
>> 114 cflags-y += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float
155 endif 115 endif
156 116
157 KBUILD_CFLAGS += -DKASAN_SHADOW_SCALE_SHIFT=$( !! 117 cflags-y += -ffreestanding
158 KBUILD_CPPFLAGS += -DKASAN_SHADOW_SCALE_SHIFT= <<
159 KBUILD_AFLAGS += -DKASAN_SHADOW_SCALE_SHIFT=$( <<
160 118
161 libs-y := arch/arm64/lib/ $(libs-y) !! 119 cflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
162 libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/ !! 120 cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -EL
163 121
164 # Default target when executing plain make !! 122 cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
165 boot := arch/arm64/boot !! 123 -fno-omit-frame-pointer
166 124
167 BOOT_TARGETS := Image vmlinuz.efi image.fit !! 125 # Some distribution-specific toolchains might pass the -fstack-check
>> 126 # option during the build, which adds a simple stack-probe at the beginning
>> 127 # of every function. This stack probe is to ensure that there is enough
>> 128 # stack space, else a SEGV is generated. This is not desirable for MIPS
>> 129 # as kernel stacks are small, placed in unmapped virtual memory, and do not
>> 130 # grow when overflowed. Especially on SGI IP27 platforms, this check will
>> 131 # lead to a NULL pointer dereference in _raw_spin_lock_irq.
>> 132 #
>> 133 # In disassembly, this stack probe appears at the top of a function as:
>> 134 # sd zero,<offset>(sp)
>> 135 # Where <offset> is a negative value.
>> 136 #
>> 137 cflags-y += -fno-stack-check
168 138
169 PHONY += $(BOOT_TARGETS) !! 139 # binutils from v2.35 when built with --enable-mips-fix-loongson3-llsc=yes,
>> 140 # supports an -mfix-loongson3-llsc flag which emits a sync prior to each ll
>> 141 # instruction to work around a CPU bug (see __SYNC_loongson3_war in asm/sync.h
>> 142 # for a description).
>> 143 #
>> 144 # We disable this in order to prevent the assembler meddling with the
>> 145 # instruction that labels refer to, ie. if we label an ll instruction:
>> 146 #
>> 147 # 1: ll v0, 0(a0)
>> 148 #
>> 149 # ...then with the assembler fix applied the label may actually point at a sync
>> 150 # instruction inserted by the assembler, and if we were using the label in an
>> 151 # exception table the table would no longer contain the address of the ll
>> 152 # instruction.
>> 153 #
>> 154 # Avoid this by explicitly disabling that assembler behaviour.
>> 155 #
>> 156 cflags-y += $(call as-option,-Wa$(comma)-mno-fix-loongson3-llsc,)
170 157
171 ifeq ($(CONFIG_EFI_ZBOOT),) !! 158 #
172 KBUILD_IMAGE := $(boot)/Image.gz !! 159 # CPU-dependent compiler/assembler options for optimization.
>> 160 #
>> 161 cflags-$(CONFIG_CPU_R3000) += -march=r3000
>> 162 cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
>> 163 cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
>> 164 cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
>> 165 cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
>> 166 cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
>> 167 cflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,--trap
>> 168 cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,--trap
>> 169 cflags-$(CONFIG_CPU_MIPS32_R5) += -march=mips32r5 -Wa,--trap -modd-spreg
>> 170 cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg
>> 171 cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,--trap
>> 172 cflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,--trap
>> 173 cflags-$(CONFIG_CPU_MIPS64_R5) += -march=mips64r5 -Wa,--trap
>> 174 cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
>> 175 cflags-$(CONFIG_CPU_P5600) += -march=p5600 -Wa,--trap -modd-spreg
>> 176 cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
>> 177 cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
>> 178 -Wa,--trap
>> 179 cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
>> 180 -Wa,--trap
>> 181 cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
>> 182 -Wa,--trap
>> 183 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
>> 184 -Wa,--trap
>> 185 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx)
>> 186 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d)
>> 187 cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
>> 188 -Wa,--trap
>> 189 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
>> 190 ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
>> 191 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
>> 192 endif
>> 193 cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
>> 194 cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
>> 195
>> 196 cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
>> 197 cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
>> 198 cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
>> 199
>> 200 # For smartmips configurations, there are hundreds of warnings due to ISA overrides
>> 201 # in assembly and header files. smartmips is only supported for MIPS32r1 onwards
>> 202 # and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
>> 203 # similar directives in the kernel will spam the build logs with the following warnings:
>> 204 # Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
>> 205 # or
>> 206 # Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
>> 207 # Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
>> 208 # been fixed properly.
>> 209 mips-cflags := $(cflags-y)
>> 210 ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
>> 211 smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips)
>> 212 cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn
>> 213 endif
>> 214 ifeq ($(CONFIG_CPU_MICROMIPS),y)
>> 215 micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips)
>> 216 cflags-$(micromips-ase) += -mmicromips
>> 217 endif
>> 218 ifeq ($(CONFIG_CPU_HAS_MSA),y)
>> 219 toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
>> 220 cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA
>> 221 endif
>> 222 toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt)
>> 223 cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT
>> 224 # For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which
>> 225 # only warns
>> 226 xpa-cflags-y := $(mips-cflags)
>> 227 xpa-cflags-$(micromips-ase) += -mmicromips -Wa$(comma)-fatal-warnings
>> 228 toolchain-xpa := $(call cc-option-yn,$(xpa-cflags-y) -mxpa)
>> 229 cflags-$(toolchain-xpa) += -DTOOLCHAIN_SUPPORTS_XPA
>> 230 toolchain-crc := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc)
>> 231 cflags-$(toolchain-crc) += -DTOOLCHAIN_SUPPORTS_CRC
>> 232 toolchain-dsp := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mdsp)
>> 233 cflags-$(toolchain-dsp) += -DTOOLCHAIN_SUPPORTS_DSP
>> 234 toolchain-ginv := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mginv)
>> 235 cflags-$(toolchain-ginv) += -DTOOLCHAIN_SUPPORTS_GINV
>> 236
>> 237 #
>> 238 # Firmware support
>> 239 #
>> 240 libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/
>> 241 libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
>> 242 libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
>> 243 libs-y += arch/mips/fw/lib/
>> 244
>> 245 #
>> 246 # Kernel compression
>> 247 #
>> 248 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
>> 249 COMPRESSION_FNAME = vmlinuz
173 else 250 else
174 KBUILD_IMAGE := $(boot)/vmlinuz.efi !! 251 COMPRESSION_FNAME = vmlinux
175 endif 252 endif
176 253
177 all: $(notdir $(KBUILD_IMAGE)) !! 254 #
>> 255 # Board-dependent options and extra files
>> 256 #
>> 257 ifdef need-compiler
>> 258 include arch/mips/Kbuild.platforms
>> 259 endif
178 260
179 image.fit: dtbs !! 261 ifdef CONFIG_PHYSICAL_START
>> 262 load-y = $(CONFIG_PHYSICAL_START)
>> 263 endif
>> 264
>> 265 entry-y = $(shell $(objtree)/arch/mips/tools/elf-entry vmlinux)
>> 266 cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
>> 267 drivers-$(CONFIG_PCI) += arch/mips/pci/
180 268
181 vmlinuz.efi image.fit: Image !! 269 #
182 $(BOOT_TARGETS): vmlinux !! 270 # Automatically detect the build format. By default we choose
183 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$ !! 271 # the elf format according to the load address.
>> 272 # We can always force a build with a 64-bits symbol format by
>> 273 # passing 'KBUILD_SYM32=no' option to the make's command line.
>> 274 #
>> 275 ifdef CONFIG_64BIT
>> 276 ifndef KBUILD_SYM32
>> 277 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
>> 278 KBUILD_SYM32 = y
>> 279 endif
>> 280 endif
184 281
185 Image.%: Image !! 282 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
186 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$ !! 283 cflags-y += -msym32 -DKBUILD_64BIT_SYM32
>> 284 else
>> 285 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
>> 286 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
>> 287 endif
>> 288 endif
>> 289 endif
187 290
188 ifeq ($(CONFIG_COMPRESSED_INSTALL),y) !! 291 # When linking a 32-bit executable the LLVM linker cannot cope with a
189 DEFAULT_KBUILD_IMAGE = $(KBUILD_IMAGE) !! 292 # 32-bit load address that has been sign-extended to 64 bits. Simply
>> 293 # remove the upper 32 bits then, as it is safe to do so with other
>> 294 # linkers.
>> 295 ifdef CONFIG_64BIT
>> 296 load-ld = $(load-y)
190 else 297 else
191 DEFAULT_KBUILD_IMAGE = $(boot)/Image !! 298 load-ld = $(subst 0xffffffff,0x,$(load-y))
192 endif 299 endif
193 300
194 install: KBUILD_IMAGE := $(DEFAULT_KBUILD_IMAG !! 301 KBUILD_AFLAGS += $(cflags-y)
195 install zinstall: !! 302 KBUILD_CFLAGS += $(cflags-y)
196 $(call cmd,install) !! 303 KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) -DLINKER_LOAD_ADDRESS=$(load-ld)
>> 304 KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
197 305
198 archprepare: !! 306 bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
199 $(Q)$(MAKE) $(build)=arch/arm64/tools !! 307 LINKER_LOAD_ADDRESS=$(load-ld) \
200 ifeq ($(CONFIG_ARM64_ERRATUM_843419),y) !! 308 VMLINUX_ENTRY_ADDRESS=$(entry-y) \
201 ifneq ($(CONFIG_ARM64_LD_HAS_FIX_ERRATUM_843 !! 309 PLATFORM="$(platform-y)" \
202 @echo "warning: ld does not support -- !! 310 ITS_INPUTS="$(its-y)"
203 endif !! 311 ifdef CONFIG_32BIT
>> 312 bootvars-y += ADDR_BITS=32
204 endif 313 endif
205 ifeq ($(CONFIG_ARM64_USE_LSE_ATOMICS),y) !! 314 ifdef CONFIG_64BIT
206 ifneq ($(CONFIG_ARM64_LSE_ATOMICS),y) !! 315 bootvars-y += ADDR_BITS=64
207 @echo "warning: LSE atomics not suppor !! 316 endif
208 endif !! 317
>> 318 # This is required to get dwarf unwinding tables into .debug_frame
>> 319 # instead of .eh_frame so we don't discard them.
>> 320 KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
>> 321
>> 322 KBUILD_LDFLAGS += -m $(ld-emul)
>> 323
>> 324 ifdef CONFIG_MIPS
>> 325 CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
>> 326 egrep -vw '__GNUC_(MINOR_|PATCHLEVEL_)?_' | \
>> 327 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
>> 328 endif
>> 329
>> 330 OBJCOPYFLAGS += --remove-section=.reginfo
>> 331
>> 332 head-y := arch/mips/kernel/head.o
>> 333
>> 334 libs-y += arch/mips/lib/
>> 335 libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/
>> 336
>> 337 drivers-y += arch/mips/crypto/
>> 338
>> 339 # suspend and hibernation support
>> 340 drivers-$(CONFIG_PM) += arch/mips/power/
>> 341
>> 342 # boot image targets (arch/mips/boot/)
>> 343 boot-y := vmlinux.bin
>> 344 boot-y += vmlinux.ecoff
>> 345 boot-y += vmlinux.srec
>> 346 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
>> 347 boot-y += uImage
>> 348 boot-y += uImage.bin
>> 349 boot-y += uImage.bz2
>> 350 boot-y += uImage.gz
>> 351 boot-y += uImage.lzma
>> 352 boot-y += uImage.lzo
209 endif 353 endif
>> 354 boot-y += vmlinux.itb
>> 355 boot-y += vmlinux.gz.itb
>> 356 boot-y += vmlinux.bz2.itb
>> 357 boot-y += vmlinux.lzma.itb
>> 358 boot-y += vmlinux.lzo.itb
210 359
211 ifeq ($(KBUILD_EXTMOD),) !! 360 # compressed boot image targets (arch/mips/boot/compressed/)
212 # We need to generate vdso-offsets.h before co !! 361 bootz-y := vmlinuz
213 # In order to do that, we should use the archp !! 362 bootz-y += vmlinuz.bin
214 # asm-offsets.h is included in some files used !! 363 bootz-y += vmlinuz.ecoff
215 # asm-offsets.h is built in prepare0, for whic !! 364 bootz-y += vmlinuz.srec
216 # Therefore we need to generate the header aft !! 365 ifeq ($(shell expr $(zload-y) \< 0xffffffff80000000 2> /dev/null), 0)
217 # this hack. !! 366 bootz-y += uzImage.bin
218 prepare: vdso_prepare <<
219 vdso_prepare: prepare0 <<
220 $(Q)$(MAKE) $(build)=arch/arm64/kernel <<
221 include/generated/vdso-offsets.h arch/ <<
222 ifdef CONFIG_COMPAT_VDSO <<
223 $(Q)$(MAKE) $(build)=arch/arm64/kernel <<
224 arch/arm64/kernel/vdso32/vdso.so <<
225 endif 367 endif
>> 368 bootz-y += vmlinuz.itb
>> 369
>> 370 #
>> 371 # Some machines like the Indy need 32-bit ELF binaries for booting purposes.
>> 372 # Other need ECOFF, so we build a 32-bit ELF binary for them which we then
>> 373 # convert to ECOFF using elf2ecoff.
>> 374 #
>> 375 quiet_cmd_32 = OBJCOPY $@
>> 376 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
>> 377 vmlinux.32: vmlinux
>> 378 $(call cmd,32)
>> 379
>> 380 #
>> 381 # The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
>> 382 # ELF files from 32-bit files by conversion.
>> 383 #
>> 384 quiet_cmd_64 = OBJCOPY $@
>> 385 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
>> 386 vmlinux.64: vmlinux
>> 387 $(call cmd,64)
>> 388
>> 389 all: $(all-y) $(KBUILD_DTBS)
>> 390
>> 391 # boot
>> 392 $(boot-y): $(vmlinux-32) FORCE
>> 393 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
>> 394 $(bootvars-y) arch/mips/boot/$@
>> 395
>> 396 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
>> 397 # boot/compressed
>> 398 $(bootz-y): $(vmlinux-32) FORCE
>> 399 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
>> 400 $(bootvars-y) 32bit-bfd=$(32bit-bfd) arch/mips/boot/$@
>> 401 else
>> 402 vmlinuz: FORCE
>> 403 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
>> 404 /bin/false
226 endif 405 endif
227 406
228 vdso-install-y += arc !! 407
229 vdso-install-$(CONFIG_COMPAT_VDSO) += arc !! 408 CLEAN_FILES += vmlinux.32 vmlinux.64
230 !! 409
231 include $(srctree)/scripts/Makefile.defconf !! 410 # device-trees
232 !! 411 core-y += arch/mips/boot/dts/
233 PHONY += virtconfig !! 412
234 virtconfig: !! 413 archprepare:
235 $(call merge_into_defconfig_override,d !! 414 ifdef CONFIG_MIPS32_N32
>> 415 @$(kecho) ' Checking missing-syscalls for N32'
>> 416 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
>> 417 endif
>> 418 ifdef CONFIG_MIPS32_O32
>> 419 @$(kecho) ' Checking missing-syscalls for O32'
>> 420 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
>> 421 endif
>> 422
>> 423 install:
>> 424 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
>> 425 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
>> 426 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
>> 427 endif
>> 428 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
>> 429 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
>> 430
>> 431 archclean:
>> 432 $(Q)$(MAKE) $(clean)=arch/mips/boot
>> 433 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
>> 434 $(Q)$(MAKE) $(clean)=arch/mips/boot/tools
>> 435
>> 436 archheaders:
>> 437 $(Q)$(MAKE) $(build)=arch/mips/kernel/syscalls all
236 438
237 define archhelp 439 define archhelp
238 echo '* Image.gz - Compressed kernel i !! 440 echo ' install - install kernel into $(INSTALL_PATH)'
239 echo ' Image - Uncompressed kernel !! 441 echo ' vmlinux.ecoff - ECOFF boot image'
240 echo ' image.fit - Flat Image Tree (ar !! 442 echo ' vmlinux.bin - Raw binary boot image'
241 echo ' install - Install kernel (com !! 443 echo ' vmlinux.srec - SREC boot image'
242 echo ' zinstall - Install compressed !! 444 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)'
243 echo ' Install using (your !! 445 echo ' vmlinuz - Compressed boot(zboot) image'
244 echo ' (distribution) /sbi !! 446 echo ' vmlinuz.ecoff - ECOFF zboot image'
245 echo ' install to $$(INSTA !! 447 echo ' vmlinuz.bin - Raw binary zboot image'
>> 448 echo ' vmlinuz.srec - SREC zboot image'
>> 449 echo ' uImage - U-Boot image'
>> 450 echo ' uImage.bin - U-Boot image (uncompressed)'
>> 451 echo ' uImage.bz2 - U-Boot image (bz2)'
>> 452 echo ' uImage.gz - U-Boot image (gzip)'
>> 453 echo ' uImage.lzma - U-Boot image (lzma)'
>> 454 echo ' uImage.lzo - U-Boot image (lzo)'
>> 455 echo ' uzImage.bin - U-Boot image (self-extracting)'
>> 456 echo
>> 457 echo ' These will be default as appropriate for a configured platform.'
>> 458 echo
>> 459 echo ' If you are targeting a system supported by generic kernels you may'
>> 460 echo ' configure the kernel for a given architecture target like so:'
>> 461 echo
>> 462 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
>> 463 echo
>> 464 echo ' Where BOARDS is some subset of the following:'
>> 465 for board in $(sort $(BOARDS)); do echo " $${board}"; done
>> 466 echo
>> 467 echo ' Specifically the following generic default configurations are'
>> 468 echo ' supported:'
>> 469 echo
>> 470 $(foreach cfg,$(generic_defconfigs),
>> 471 printf " %-24s - Build generic kernel for $(call describe_generic_defconfig,$(cfg))\n" $(cfg);)
>> 472 echo
>> 473 echo ' The following legacy default configurations have been converted to'
>> 474 echo ' generic and can still be used:'
>> 475 echo
>> 476 $(foreach cfg,$(sort $(legacy_defconfigs)),
>> 477 printf " %-24s - Build $($(cfg)-y)\n" $(cfg);)
>> 478 echo
>> 479 echo ' Otherwise, the following default configurations are available:'
246 endef 480 endef
>> 481
>> 482 generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
>> 483 generic_defconfigs :=
>> 484
>> 485 #
>> 486 # If the user generates a generic kernel configuration without specifying a
>> 487 # list of boards to include the config fragments for, default to including all
>> 488 # available board config fragments.
>> 489 #
>> 490 ifeq ($(BOARDS),)
>> 491 BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
>> 492 endif
>> 493
>> 494 #
>> 495 # Generic kernel configurations which merge generic_defconfig with the
>> 496 # appropriate config fragments from arch/mips/configs/generic/, resulting in
>> 497 # the ability to easily configure the kernel for a given architecture,
>> 498 # endianness & set of boards without duplicating the needed configuration in
>> 499 # hundreds of defconfig files.
>> 500 #
>> 501 define gen_generic_defconfigs
>> 502 $(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
>> 503 target := $(bits)$(rev)$(filter el,$(endian))_defconfig
>> 504 generic_defconfigs += $$(target)
>> 505 $$(target): $(generic_config_dir)/$(bits)$(rev).config
>> 506 $$(target): $(generic_config_dir)/$(endian).config
>> 507 )))
>> 508 endef
>> 509
>> 510 $(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
>> 511 $(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
>> 512
>> 513 define describe_generic_defconfig
>> 514 $(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(subst el, little endian,$(patsubst %_defconfig,%,$(1)))))
>> 515 endef
>> 516
>> 517 .PHONY: $(generic_defconfigs)
>> 518 $(generic_defconfigs):
>> 519 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
>> 520 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \
>> 521 grep -Ev '^#'
>> 522 $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@
>> 523 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \
>> 524 KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null
>> 525 $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \
>> 526 $(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \
>> 527 "$(origin BOARDS)" $(BOARDS)
>> 528 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
>> 529
>> 530 #
>> 531 # Prevent generic merge_config rules attempting to merge single fragments
>> 532 #
>> 533 $(generic_config_dir)/%.config: ;
>> 534
>> 535 #
>> 536 # Prevent direct use of generic_defconfig, which is intended to be used as the
>> 537 # basis of the various ISA-specific targets generated above.
>> 538 #
>> 539 .PHONY: generic_defconfig
>> 540 generic_defconfig:
>> 541 $(Q)echo "generic_defconfig is not intended for direct use, but should instead be"
>> 542 $(Q)echo "used via an ISA-specific target from the following list:"
>> 543 $(Q)echo
>> 544 $(Q)for cfg in $(generic_defconfigs); do echo " $${cfg}"; done
>> 545 $(Q)echo
>> 546 $(Q)false
>> 547
>> 548 #
>> 549 # Legacy defconfig compatibility - these targets used to be real defconfigs but
>> 550 # now that the boards have been converted to use the generic kernel they are
>> 551 # wrappers around the generic rules above.
>> 552 #
>> 553 legacy_defconfigs += ocelot_defconfig
>> 554 ocelot_defconfig-y := 32r2el_defconfig BOARDS=ocelot
>> 555
>> 556 legacy_defconfigs += sead3_defconfig
>> 557 sead3_defconfig-y := 32r2el_defconfig BOARDS=sead-3
>> 558
>> 559 legacy_defconfigs += sead3micro_defconfig
>> 560 sead3micro_defconfig-y := micro32r2el_defconfig BOARDS=sead-3
>> 561
>> 562 legacy_defconfigs += xilfpga_defconfig
>> 563 xilfpga_defconfig-y := 32r2el_defconfig BOARDS=xilfpga
>> 564
>> 565 .PHONY: $(legacy_defconfigs)
>> 566 $(legacy_defconfigs):
>> 567 $(Q)$(MAKE) -f $(srctree)/Makefile $($@-y)
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