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
>> 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. Remember to do have actions
>> 12 # for "archclean" cleaning up for this architecture.
>> 13 #
12 14
13 LDFLAGS_vmlinux :=--no-undefined -X --pic-vene !! 15 archscripts: scripts_basic
>> 16 $(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs
14 17
15 ifeq ($(CONFIG_RELOCATABLE), y) !! 18 KBUILD_DEFCONFIG := ip22_defconfig
16 # Pass --no-apply-dynamic-relocs to restore pr <<
17 # for relative relocs, since this leads to bet <<
18 # with the relocation offsets always being zer <<
19 LDFLAGS_vmlinux += -shared -Bsymbolic <<
20 $(call ld-option, --no <<
21 endif <<
22 19
23 ifeq ($(CONFIG_ARM64_ERRATUM_843419),y) !! 20 #
24 ifeq ($(CONFIG_ARM64_LD_HAS_FIX_ERRATUM_8434 !! 21 # Select the object file format to substitute into the linker script.
25 LDFLAGS_vmlinux += --fix-cortex-a53-843419 !! 22 #
>> 23 ifdef CONFIG_CPU_LITTLE_ENDIAN
>> 24 32bit-tool-archpref = mipsel
>> 25 64bit-tool-archpref = mips64el
>> 26 32bit-bfd = elf32-tradlittlemips
>> 27 64bit-bfd = elf64-tradlittlemips
>> 28 32bit-emul = elf32ltsmip
>> 29 64bit-emul = elf64ltsmip
>> 30 else
>> 31 32bit-tool-archpref = mips
>> 32 64bit-tool-archpref = mips64
>> 33 32bit-bfd = elf32-tradbigmips
>> 34 64bit-bfd = elf64-tradbigmips
>> 35 32bit-emul = elf32btsmip
>> 36 64bit-emul = elf64btsmip
>> 37 endif
>> 38
>> 39 ifdef CONFIG_32BIT
>> 40 tool-archpref = $(32bit-tool-archpref)
>> 41 UTS_MACHINE := mips
>> 42 endif
>> 43 ifdef CONFIG_64BIT
>> 44 tool-archpref = $(64bit-tool-archpref)
>> 45 UTS_MACHINE := mips64
>> 46 endif
>> 47
>> 48 ifneq ($(SUBARCH),$(ARCH))
>> 49 ifeq ($(CROSS_COMPILE),)
>> 50 CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-)
26 endif 51 endif
27 endif 52 endif
28 53
29 cc_has_k_constraint := $(call try-run,echo !! 54 ifdef CONFIG_FUNCTION_GRAPH_TRACER
30 'int main(void) { !! 55 ifndef KBUILD_MCOUNT_RA_ADDRESS
31 asm volatile("and w0, w0, %w0" !! 56 ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
32 return 0; !! 57 cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
33 }' | $(CC) -S -x c -o "$$TMP" -,,-DCON !! 58 endif
34 <<
35 ifeq ($(CONFIG_BROKEN_GAS_INST),y) <<
36 $(warning Detected assembler with broken .inst <<
37 endif <<
38 <<
39 # The GCC option -ffreestanding is required in <<
40 # ARM/NEON intrinsics in a non C99-compliant e <<
41 CC_FLAGS_FPU := -ffreestanding <<
42 # Enable <arm_neon.h> <<
43 CC_FLAGS_FPU += -isystem $(shell $(CC) -pri <<
44 CC_FLAGS_NO_FPU := -mgeneral-regs-only <<
45 <<
46 KBUILD_CFLAGS += $(CC_FLAGS_NO_FPU) \ <<
47 $(compat_vdso) $(cc_has_k_c <<
48 KBUILD_CFLAGS += $(call cc-disable-warning, <<
49 KBUILD_AFLAGS += $(compat_vdso) <<
50 <<
51 KBUILD_RUSTFLAGS += --target=aarch64-unknown-n <<
52 <<
53 KBUILD_CFLAGS += $(call cc-option,-mabi=lp64 <<
54 KBUILD_AFLAGS += $(call cc-option,-mabi=lp64 <<
55 <<
56 # Avoid generating .eh_frame* sections. <<
57 ifneq ($(CONFIG_UNWIND_TABLES),y) <<
58 KBUILD_CFLAGS += -fno-asynchronous-unwind-ta <<
59 KBUILD_AFLAGS += -fno-asynchronous-unwind-ta <<
60 KBUILD_RUSTFLAGS += -Cforce-unwind-tables=n <<
61 else <<
62 KBUILD_CFLAGS += -fasynchronous-unwind-table <<
63 KBUILD_AFLAGS += -fasynchronous-unwind-table <<
64 KBUILD_RUSTFLAGS += -Cforce-unwind-tables=y -Z <<
65 endif <<
66 <<
67 ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y) <<
68 prepare: stack_protector_prepare <<
69 stack_protector_prepare: prepare0 <<
70 $(eval KBUILD_CFLAGS += -mstack-protec <<
71 -mstack-protec <<
72 -mstack-protec <<
73 awk '{if ($$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 59 endif
87 else <<
88 KBUILD_CFLAGS += $(call cc-option,-mbranch-p <<
89 endif 60 endif
>> 61 cflags-y += $(call cc-option, -mno-check-zero-division)
90 62
91 # Tell the assembler to support instructions f !! 63 ifdef CONFIG_32BIT
92 # architecture. !! 64 ld-emul = $(32bit-emul)
93 # !! 65 vmlinux-32 = vmlinux
94 # For non-integrated assemblers we'll pass thi !! 66 vmlinux-64 = vmlinux.64
95 # integrated assemblers we'll define ARM64_ASM <<
96 # inline usage. <<
97 # <<
98 # We cannot pass the same arch flag to the com <<
99 # freely generate instructions which are not s <<
100 # versions, which would prevent a single kerne <<
101 # hardware. <<
102 ifeq ($(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 $(call ld-option, -maar <<
134 UTS_MACHINE := aarch64 <<
135 endif <<
136 67
137 ifeq ($(CONFIG_LD_IS_LLD), y) !! 68 cflags-y += -mabi=32
138 KBUILD_LDFLAGS += -z norelro <<
139 endif 69 endif
140 70
141 CHECKFLAGS += -D__aarch64__ !! 71 ifdef CONFIG_64BIT
>> 72 ld-emul = $(64bit-emul)
>> 73 vmlinux-32 = vmlinux.32
>> 74 vmlinux-64 = vmlinux
142 75
143 ifeq ($(CONFIG_DYNAMIC_FTRACE_WITH_CALL_OPS),y !! 76 cflags-y += -mabi=64
144 KBUILD_CPPFLAGS += -DCC_USING_PATCHABLE_FUNC <<
145 CC_FLAGS_FTRACE := -fpatchable-function-entr <<
146 else ifeq ($(CONFIG_DYNAMIC_FTRACE_WITH_ARGS), <<
147 KBUILD_CPPFLAGS += -DCC_USING_PATCHABLE_FUNC <<
148 CC_FLAGS_FTRACE := -fpatchable-function-entr <<
149 endif 77 endif
150 78
151 ifeq ($(CONFIG_KASAN_SW_TAGS), y) !! 79 all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32)
152 KASAN_SHADOW_SCALE_SHIFT := 4 !! 80 all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64)
153 else ifeq ($(CONFIG_KASAN_GENERIC), y) !! 81 all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz
154 KASAN_SHADOW_SCALE_SHIFT := 3 !! 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 $28 conflicts with
>> 87 # the current pointer optimization.
>> 88 #
>> 89 # The DECStation requires an ECOFF kernel for remote booting, other MIPS
>> 90 # machines may also. Since BFD is incredibly buggy with respect to
>> 91 # crossformat linking we rely on the elf2ecoff tool for format conversion.
>> 92 #
>> 93 cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
>> 94 cflags-y += -msoft-float
>> 95 LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
>> 96 KBUILD_AFLAGS_MODULE += -mlong-calls
>> 97 KBUILD_CFLAGS_MODULE += -mlong-calls
>> 98
>> 99 ifeq ($(CONFIG_RELOCATABLE),y)
>> 100 LDFLAGS_vmlinux += --emit-relocs
155 endif 101 endif
156 102
157 KBUILD_CFLAGS += -DKASAN_SHADOW_SCALE_SHIFT=$( !! 103 #
158 KBUILD_CPPFLAGS += -DKASAN_SHADOW_SCALE_SHIFT= !! 104 # pass -msoft-float to GAS if it supports it. However on newer binutils
159 KBUILD_AFLAGS += -DKASAN_SHADOW_SCALE_SHIFT=$( !! 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
160 111
161 libs-y := arch/arm64/lib/ $(libs-y) !! 112 cflags-y += -ffreestanding
162 libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/ <<
163 113
164 # Default target when executing plain make !! 114 #
165 boot := arch/arm64/boot !! 115 # We explicitly add the endianness specifier if needed, this allows
>> 116 # to compile kernels with a toolchain for the other endianness. We
>> 117 # carefully avoid to add it redundantly because gcc 3.3/3.4 complains
>> 118 # when fed the toolchain default!
>> 119 #
>> 120 # Certain gcc versions up to gcc 4.1.1 (probably 4.2-subversion as of
>> 121 # 2006-10-10 don't properly change the predefined symbols if -EB / -EL
>> 122 # are used, so we kludge that here. A bug has been filed at
>> 123 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413.
>> 124 #
>> 125 undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
>> 126 undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
>> 127 predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
>> 128 predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
>> 129 cflags-$(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) $(predef-le))
166 131
167 BOOT_TARGETS := Image vmlinuz.efi image.fit !! 132 cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
>> 133 -fno-omit-frame-pointer
>> 134 #
>> 135 # CPU-dependent compiler/assembler options for optimization.
>> 136 #
>> 137 cflags-$(CONFIG_CPU_R3000) += -march=r3000
>> 138 cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
>> 139 cflags-$(CONFIG_CPU_R6000) += -march=r6000 -Wa,--trap
>> 140 cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
>> 141 cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
>> 142 cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
>> 143 cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
>> 144 cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
>> 145 -Wa,-mips32 -Wa,--trap
>> 146 cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
>> 147 -Wa,-mips32r2 -Wa,--trap
>> 148 cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap
>> 149 cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
>> 150 -Wa,-mips64 -Wa,--trap
>> 151 cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
>> 152 -Wa,-mips64r2 -Wa,--trap
>> 153 cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
>> 154 cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
>> 155 cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \
>> 156 -Wa,--trap
>> 157 cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
>> 158 -Wa,--trap
>> 159 cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
>> 160 -Wa,--trap
>> 161 cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
>> 162 -Wa,--trap
>> 163 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
>> 164 -Wa,--trap
>> 165 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx)
>> 166 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d)
>> 167 cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap
>> 168 cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
>> 169 -Wa,--trap
>> 170 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
>> 171 ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
>> 172 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
>> 173 endif
>> 174 cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
>> 175 cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
>> 176
>> 177 cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
>> 178 cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
>> 179 cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
>> 180
>> 181 # For smartmips configurations, there are hundreds of warnings due to ISA overrides
>> 182 # in assembly and header files. smartmips is only supported for MIPS32r1 onwards
>> 183 # and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
>> 184 # similar directives in the kernel will spam the build logs with the following warnings:
>> 185 # Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
>> 186 # or
>> 187 # Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
>> 188 # Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
>> 189 # been fixed properly.
>> 190 mips-cflags := $(cflags-y)
>> 191 ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
>> 192 smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips)
>> 193 cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn
>> 194 endif
>> 195 ifeq ($(CONFIG_CPU_MICROMIPS),y)
>> 196 micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips)
>> 197 cflags-$(micromips-ase) += -mmicromips
>> 198 endif
>> 199 ifeq ($(CONFIG_CPU_HAS_MSA),y)
>> 200 toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
>> 201 cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA
>> 202 endif
>> 203 toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt)
>> 204 cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT
168 205
169 PHONY += $(BOOT_TARGETS) !! 206 #
>> 207 # Firmware support
>> 208 #
>> 209 libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/
>> 210 libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
>> 211 libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
>> 212 libs-y += arch/mips/fw/lib/
170 213
171 ifeq ($(CONFIG_EFI_ZBOOT),) !! 214 #
172 KBUILD_IMAGE := $(boot)/Image.gz !! 215 # Kernel compression
>> 216 #
>> 217 ifdef SYS_SUPPORTS_ZBOOT
>> 218 COMPRESSION_FNAME = vmlinuz
173 else 219 else
174 KBUILD_IMAGE := $(boot)/vmlinuz.efi !! 220 COMPRESSION_FNAME = vmlinux
175 endif 221 endif
176 222
177 all: $(notdir $(KBUILD_IMAGE)) !! 223 #
>> 224 # Board-dependent options and extra files
>> 225 #
>> 226 include arch/mips/Kbuild.platforms
178 227
179 image.fit: dtbs !! 228 ifdef CONFIG_PHYSICAL_START
>> 229 load-y = $(CONFIG_PHYSICAL_START)
>> 230 endif
>> 231 entry-y = 0x$(shell $(NM) vmlinux 2>/dev/null \
>> 232 | grep "\bkernel_entry\b" | cut -f1 -d \ )
180 233
181 vmlinuz.efi image.fit: Image !! 234 cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
182 $(BOOT_TARGETS): vmlinux !! 235 drivers-$(CONFIG_PCI) += arch/mips/pci/
183 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$ <<
184 236
185 Image.%: Image !! 237 #
186 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$ !! 238 # Automatically detect the build format. By default we choose
>> 239 # the elf format according to the load address.
>> 240 # We can always force a build with a 64-bits symbol format by
>> 241 # passing 'KBUILD_SYM32=no' option to the make's command line.
>> 242 #
>> 243 ifdef CONFIG_64BIT
>> 244 ifndef KBUILD_SYM32
>> 245 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
>> 246 KBUILD_SYM32 = y
>> 247 endif
>> 248 endif
187 249
188 ifeq ($(CONFIG_COMPRESSED_INSTALL),y) !! 250 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
189 DEFAULT_KBUILD_IMAGE = $(KBUILD_IMAGE) !! 251 cflags-y += -msym32 -DKBUILD_64BIT_SYM32
>> 252 else
>> 253 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
>> 254 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
>> 255 endif
>> 256 endif
>> 257 endif
>> 258
>> 259 # When linking a 32-bit executable the LLVM linker cannot cope with a
>> 260 # 32-bit load address that has been sign-extended to 64 bits. Simply
>> 261 # remove the upper 32 bits then, as it is safe to do so with other
>> 262 # linkers.
>> 263 ifdef CONFIG_64BIT
>> 264 load-ld = $(load-y)
190 else 265 else
191 DEFAULT_KBUILD_IMAGE = $(boot)/Image !! 266 load-ld = $(subst 0xffffffff,0x,$(load-y))
192 endif 267 endif
193 268
194 install: KBUILD_IMAGE := $(DEFAULT_KBUILD_IMAG !! 269 KBUILD_AFLAGS += $(cflags-y)
195 install zinstall: !! 270 KBUILD_CFLAGS += $(cflags-y)
196 $(call cmd,install) !! 271 KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) -DLINKER_LOAD_ADDRESS=$(load-ld)
>> 272 KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
197 273
198 archprepare: !! 274 bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
199 $(Q)$(MAKE) $(build)=arch/arm64/tools !! 275 LINKER_LOAD_ADDRESS=$(load-ld) \
200 ifeq ($(CONFIG_ARM64_ERRATUM_843419),y) !! 276 VMLINUX_ENTRY_ADDRESS=$(entry-y) \
201 ifneq ($(CONFIG_ARM64_LD_HAS_FIX_ERRATUM_843 !! 277 PLATFORM="$(platform-y)"
202 @echo "warning: ld does not support -- !! 278 ifdef CONFIG_32BIT
203 endif !! 279 bootvars-y += ADDR_BITS=32
204 endif 280 endif
205 ifeq ($(CONFIG_ARM64_USE_LSE_ATOMICS),y) !! 281 ifdef CONFIG_64BIT
206 ifneq ($(CONFIG_ARM64_LSE_ATOMICS),y) !! 282 bootvars-y += ADDR_BITS=64
207 @echo "warning: LSE atomics not suppor <<
208 endif <<
209 endif 283 endif
210 284
211 ifeq ($(KBUILD_EXTMOD),) !! 285 LDFLAGS += -m $(ld-emul)
212 # We need to generate vdso-offsets.h before co !! 286
213 # In order to do that, we should use the archp !! 287 ifdef CONFIG_MIPS
214 # asm-offsets.h is included in some files used !! 288 CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
215 # asm-offsets.h is built in prepare0, for whic !! 289 egrep -vw '__GNUC_(MINOR_|PATCHLEVEL_)?_' | \
216 # Therefore we need to generate the header aft !! 290 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
217 # this hack. !! 291 ifdef CONFIG_64BIT
218 prepare: vdso_prepare !! 292 CHECKFLAGS += -m64
219 vdso_prepare: prepare0 !! 293 endif
220 $(Q)$(MAKE) $(build)=arch/arm64/kernel !! 294 endif
221 include/generated/vdso-offsets.h arch/ !! 295
222 ifdef CONFIG_COMPAT_VDSO !! 296 OBJCOPYFLAGS += --remove-section=.reginfo
223 $(Q)$(MAKE) $(build)=arch/arm64/kernel !! 297
224 arch/arm64/kernel/vdso32/vdso.so !! 298 head-y := arch/mips/kernel/head.o
>> 299
>> 300 libs-y += arch/mips/lib/
>> 301 libs-y += arch/mips/math-emu/
>> 302
>> 303 # See arch/mips/Kbuild for content of core part of the kernel
>> 304 core-y += arch/mips/
>> 305
>> 306 drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/
>> 307
>> 308 # suspend and hibernation support
>> 309 drivers-$(CONFIG_PM) += arch/mips/power/
>> 310
>> 311 # boot image targets (arch/mips/boot/)
>> 312 boot-y := vmlinux.bin
>> 313 boot-y += vmlinux.ecoff
>> 314 boot-y += vmlinux.srec
>> 315 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
>> 316 boot-y += uImage
>> 317 boot-y += uImage.bin
>> 318 boot-y += uImage.bz2
>> 319 boot-y += uImage.gz
>> 320 boot-y += uImage.lzma
>> 321 boot-y += uImage.lzo
225 endif 322 endif
>> 323 boot-y += vmlinux.itb
>> 324 boot-y += vmlinux.gz.itb
>> 325 boot-y += vmlinux.bz2.itb
>> 326 boot-y += vmlinux.lzma.itb
>> 327 boot-y += vmlinux.lzo.itb
>> 328
>> 329 # compressed boot image targets (arch/mips/boot/compressed/)
>> 330 bootz-y := vmlinuz
>> 331 bootz-y += vmlinuz.bin
>> 332 bootz-y += vmlinuz.ecoff
>> 333 bootz-y += vmlinuz.srec
>> 334
>> 335 ifdef CONFIG_LASAT
>> 336 rom.bin rom.sw: vmlinux
>> 337 $(Q)$(MAKE) $(build)=arch/mips/lasat/image \
>> 338 $(bootvars-y) $@
226 endif 339 endif
227 340
228 vdso-install-y += arc !! 341 CMD_RELOCS = arch/mips/boot/tools/relocs
229 vdso-install-$(CONFIG_COMPAT_VDSO) += arc !! 342 quiet_cmd_relocs = RELOCS $<
230 !! 343 cmd_relocs = $(CMD_RELOCS) $<
231 include $(srctree)/scripts/Makefile.defconf !! 344
232 !! 345 #
233 PHONY += virtconfig !! 346 # Some machines like the Indy need 32-bit ELF binaries for booting purposes.
234 virtconfig: !! 347 # Other need ECOFF, so we build a 32-bit ELF binary for them which we then
235 $(call merge_into_defconfig_override,d !! 348 # convert to ECOFF using elf2ecoff.
>> 349 #
>> 350 quiet_cmd_32 = OBJCOPY $@
>> 351 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
>> 352 vmlinux.32: vmlinux
>> 353 ifeq ($(CONFIG_RELOCATABLE)$(CONFIG_64BIT),yy)
>> 354 # Currently, objcopy fails to handle the relocations in the elf64
>> 355 # So the relocs tool must be run here to remove them first
>> 356 $(call cmd,relocs)
>> 357 endif
>> 358 $(call cmd,32)
>> 359
>> 360 #
>> 361 # The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
>> 362 # ELF files from 32-bit files by conversion.
>> 363 #
>> 364 quiet_cmd_64 = OBJCOPY $@
>> 365 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
>> 366 vmlinux.64: vmlinux
>> 367 $(call cmd,64)
>> 368
>> 369 all: $(all-y)
>> 370
>> 371 # boot
>> 372 $(boot-y): $(vmlinux-32) FORCE
>> 373 ifeq ($(CONFIG_RELOCATABLE)$(CONFIG_32BIT),yy)
>> 374 $(call cmd,relocs)
>> 375 endif
>> 376 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
>> 377 $(bootvars-y) arch/mips/boot/$@
>> 378
>> 379 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
>> 380 # boot/compressed
>> 381 $(bootz-y): $(vmlinux-32) FORCE
>> 382 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
>> 383 $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
>> 384 else
>> 385 vmlinuz: FORCE
>> 386 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
>> 387 /bin/false
>> 388 endif
>> 389
>> 390
>> 391 CLEAN_FILES += vmlinux.32 vmlinux.64
>> 392
>> 393 # device-trees
>> 394 core-$(CONFIG_BUILTIN_DTB) += arch/mips/boot/dts/
>> 395
>> 396 %.dtb %.dtb.S %.dtb.o: | scripts
>> 397 $(Q)$(MAKE) $(build)=arch/mips/boot/dts arch/mips/boot/dts/$@
>> 398
>> 399 PHONY += dtbs
>> 400 dtbs: scripts
>> 401 $(Q)$(MAKE) $(build)=arch/mips/boot/dts
>> 402
>> 403 PHONY += dtbs_install
>> 404 dtbs_install:
>> 405 $(Q)$(MAKE) $(dtbinst)=arch/mips/boot/dts
>> 406
>> 407 archprepare:
>> 408 ifdef CONFIG_MIPS32_N32
>> 409 @echo ' Checking missing-syscalls for N32'
>> 410 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
>> 411 endif
>> 412 ifdef CONFIG_MIPS32_O32
>> 413 @echo ' Checking missing-syscalls for O32'
>> 414 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
>> 415 endif
>> 416
>> 417 install:
>> 418 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
>> 419 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
>> 420 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
>> 421 endif
>> 422 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
>> 423 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
>> 424
>> 425 archclean:
>> 426 $(Q)$(MAKE) $(clean)=arch/mips/boot
>> 427 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
>> 428 $(Q)$(MAKE) $(clean)=arch/mips/boot/tools
>> 429 $(Q)$(MAKE) $(clean)=arch/mips/lasat
236 430
237 define archhelp 431 define archhelp
238 echo '* Image.gz - Compressed kernel i !! 432 echo ' install - install kernel into $(INSTALL_PATH)'
239 echo ' Image - Uncompressed kernel !! 433 echo ' vmlinux.ecoff - ECOFF boot image'
240 echo ' image.fit - Flat Image Tree (ar !! 434 echo ' vmlinux.bin - Raw binary boot image'
241 echo ' install - Install kernel (com !! 435 echo ' vmlinux.srec - SREC boot image'
242 echo ' zinstall - Install compressed !! 436 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)'
243 echo ' Install using (your !! 437 echo ' vmlinuz - Compressed boot(zboot) image'
244 echo ' (distribution) /sbi !! 438 echo ' vmlinuz.ecoff - ECOFF zboot image'
245 echo ' install to $$(INSTA !! 439 echo ' vmlinuz.bin - Raw binary zboot image'
>> 440 echo ' vmlinuz.srec - SREC zboot image'
>> 441 echo ' uImage - U-Boot image'
>> 442 echo ' uImage.bin - U-Boot image (uncompressed)'
>> 443 echo ' uImage.bz2 - U-Boot image (bz2)'
>> 444 echo ' uImage.gz - U-Boot image (gzip)'
>> 445 echo ' uImage.lzma - U-Boot image (lzma)'
>> 446 echo ' uImage.lzo - U-Boot image (lzo)'
>> 447 echo ' dtbs - Device-tree blobs for enabled boards'
>> 448 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
>> 449 echo
>> 450 echo ' These will be default as appropriate for a configured platform.'
>> 451 echo
>> 452 echo ' If you are targeting a system supported by generic kernels you may'
>> 453 echo ' configure the kernel for a given architecture target like so:'
>> 454 echo
>> 455 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
>> 456 echo
>> 457 echo ' Otherwise, the following default configurations are available:'
246 endef 458 endef
>> 459
>> 460 generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
>> 461 generic_defconfigs :=
>> 462
>> 463 #
>> 464 # If the user generates a generic kernel configuration without specifying a
>> 465 # list of boards to include the config fragments for, default to including all
>> 466 # available board config fragments.
>> 467 #
>> 468 ifeq ($(BOARDS),)
>> 469 BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
>> 470 endif
>> 471
>> 472 #
>> 473 # Generic kernel configurations which merge generic_defconfig with the
>> 474 # appropriate config fragments from arch/mips/configs/generic/, resulting in
>> 475 # the ability to easily configure the kernel for a given architecture,
>> 476 # endianness & set of boards without duplicating the needed configuration in
>> 477 # hundreds of defconfig files.
>> 478 #
>> 479 define gen_generic_defconfigs
>> 480 $(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
>> 481 target := $(bits)$(rev)$(filter el,$(endian))_defconfig
>> 482 generic_defconfigs += $$(target)
>> 483 $$(target): $(generic_config_dir)/$(bits)$(rev).config
>> 484 $$(target): $(generic_config_dir)/$(endian).config
>> 485 )))
>> 486 endef
>> 487
>> 488 $(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
>> 489 $(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
>> 490
>> 491 .PHONY: $(generic_defconfigs)
>> 492 $(generic_defconfigs):
>> 493 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
>> 494 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ \
>> 495 $(foreach board,$(BOARDS),$(generic_config_dir)/board-$(board).config)
>> 496 $(Q)$(MAKE) olddefconfig
>> 497
>> 498 #
>> 499 # Prevent generic merge_config rules attempting to merge single fragments
>> 500 #
>> 501 $(generic_config_dir)/%.config: ;
>> 502
>> 503 #
>> 504 # Legacy defconfig compatibility - these targets used to be real defconfigs but
>> 505 # now that the boards have been converted to use the generic kernel they are
>> 506 # wrappers around the generic rules above.
>> 507 #
>> 508 .PHONY: sead3_defconfig
>> 509 sead3_defconfig:
>> 510 $(Q)$(MAKE) 32r2el_defconfig BOARDS=sead-3
>> 511
>> 512 .PHONY: sead3micro_defconfig
>> 513 sead3micro_defconfig:
>> 514 $(Q)$(MAKE) micro32r2el_defconfig BOARDS=sead-3
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