Commit | Line | Data |
---|---|---|
fbe934d6 | 1 | # This file is included by the global makefile so that you can add your own |
8212f898 | 2 | # architecture-specific flags and dependencies. |
fbe934d6 PD |
3 | # |
4 | # This file is subject to the terms and conditions of the GNU General Public | |
5 | # License. See the file "COPYING" in the main directory of this archive | |
6 | # for more details. | |
7 | # | |
8 | ||
26e7aacb | 9 | LDFLAGS_vmlinux := -z norelro |
39b33072 | 10 | ifeq ($(CONFIG_RELOCATABLE),y) |
26e7aacb | 11 | LDFLAGS_vmlinux += -shared -Bsymbolic -z notext --emit-relocs |
39b33072 AG |
12 | KBUILD_CFLAGS += -fPIE |
13 | endif | |
a1d2a6b4 | 14 | ifeq ($(CONFIG_DYNAMIC_FTRACE),y) |
39b33072 | 15 | LDFLAGS_vmlinux += --no-relax |
afc76b8b | 16 | KBUILD_CPPFLAGS += -DCC_USING_PATCHABLE_FUNCTION_ENTRY |
409c8fb2 | 17 | ifeq ($(CONFIG_RISCV_ISA_C),y) |
409c8fb2 | 18 | CC_FLAGS_FTRACE := -fpatchable-function-entry=4 |
6724a76c GR |
19 | else |
20 | CC_FLAGS_FTRACE := -fpatchable-function-entry=2 | |
409c8fb2 | 21 | endif |
a1d2a6b4 | 22 | endif |
aad15bc8 | 23 | |
5d2388db | 24 | ifeq ($(CONFIG_CMODEL_MEDLOW),y) |
aad15bc8 VC |
25 | KBUILD_CFLAGS_MODULE += -mcmodel=medany |
26 | endif | |
fbe934d6 | 27 | |
fbe934d6 PD |
28 | export BITS |
29 | ifeq ($(CONFIG_ARCH_RV64I),y) | |
30 | BITS := 64 | |
31 | UTS_MACHINE := riscv64 | |
32 | ||
33 | KBUILD_CFLAGS += -mabi=lp64 | |
34 | KBUILD_AFLAGS += -mabi=lp64 | |
a89757da | 35 | |
d503ac53 | 36 | KBUILD_LDFLAGS += -melf64lriscv |
70a57b24 MO |
37 | |
38 | KBUILD_RUSTFLAGS += -Ctarget-cpu=generic-rv64 --target=riscv64imac-unknown-none-elf \ | |
39 | -Cno-redzone | |
fbe934d6 PD |
40 | else |
41 | BITS := 32 | |
42 | UTS_MACHINE := riscv32 | |
43 | ||
44 | KBUILD_CFLAGS += -mabi=ilp32 | |
45 | KBUILD_AFLAGS += -mabi=ilp32 | |
d503ac53 | 46 | KBUILD_LDFLAGS += -melf32lriscv |
fbe934d6 PD |
47 | endif |
48 | ||
55b71d2c | 49 | ifndef CONFIG_RISCV_USE_LINKER_RELAXATION |
ec3a5cb6 KR |
50 | KBUILD_CFLAGS += -mno-relax |
51 | KBUILD_AFLAGS += -mno-relax | |
52cc02b9 | 52 | ifndef CONFIG_AS_IS_LLVM |
ec3a5cb6 KR |
53 | KBUILD_CFLAGS += -Wa,-mno-relax |
54 | KBUILD_AFLAGS += -Wa,-mno-relax | |
55 | endif | |
021d2342 WT |
56 | # LLVM has an issue with target-features and LTO: https://github.com/llvm/llvm-project/issues/59350 |
57 | # Ensure it is aware of linker relaxation with LTO, otherwise relocations may | |
58 | # be incorrect: https://github.com/llvm/llvm-project/issues/65090 | |
59 | else ifeq ($(CONFIG_LTO_CLANG),y) | |
60 | KBUILD_LDFLAGS += -mllvm -mattr=+c -mllvm -mattr=+relax | |
ec3a5cb6 KR |
61 | endif |
62 | ||
d1584d79 ST |
63 | ifeq ($(CONFIG_SHADOW_CALL_STACK),y) |
64 | KBUILD_LDFLAGS += --no-relax-gp | |
65 | endif | |
66 | ||
e8be5302 | 67 | # ISA string setting |
09afac77 CH |
68 | riscv-march-$(CONFIG_ARCH_RV32I) := rv32ima |
69 | riscv-march-$(CONFIG_ARCH_RV64I) := rv64ima | |
9671f706 | 70 | riscv-march-$(CONFIG_FPU) := $(riscv-march-y)fd |
e8be5302 | 71 | riscv-march-$(CONFIG_RISCV_ISA_C) := $(riscv-march-y)c |
fa8e7cce | 72 | riscv-march-$(CONFIG_RISCV_ISA_V) := $(riscv-march-y)v |
6df2a016 | 73 | |
70a57b24 MO |
74 | ifneq ($(CONFIG_RISCV_ISA_C),y) |
75 | KBUILD_RUSTFLAGS += -Ctarget-feature=-c | |
76 | endif | |
77 | ||
e89c2e81 NC |
78 | ifdef CONFIG_TOOLCHAIN_NEEDS_OLD_ISA_SPEC |
79 | KBUILD_CFLAGS += -Wa,-misa-spec=2.2 | |
80 | KBUILD_AFLAGS += -Wa,-misa-spec=2.2 | |
81 | else | |
82 | riscv-march-$(CONFIG_TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI) := $(riscv-march-y)_zicsr_zifencei | |
83 | endif | |
6df2a016 | 84 | |
fa8e7cce GR |
85 | # Remove F,D,V from isa string for all. Keep extensions between "fd" and "v" by |
86 | # matching non-v and non-multi-letter extensions out with the filter ([^v_]*) | |
87 | KBUILD_CFLAGS += -march=$(shell echo $(riscv-march-y) | sed -E 's/(rv32ima|rv64ima)fd([^v_]*)v?/\1\2/') | |
88 | ||
e8be5302 | 89 | KBUILD_AFLAGS += -march=$(riscv-march-y) |
fbe934d6 | 90 | |
77acc6b5 SH |
91 | # For C code built with floating-point support, exclude V but keep F and D. |
92 | CC_FLAGS_FPU := -march=$(shell echo $(riscv-march-y) | sed -E 's/(rv32ima|rv64ima)([^v_]*)v?/\1\2/') | |
93 | ||
fbe934d6 PD |
94 | KBUILD_CFLAGS += -mno-save-restore |
95 | KBUILD_CFLAGS += -DCONFIG_PAGE_OFFSET=$(CONFIG_PAGE_OFFSET) | |
96 | ||
97 | ifeq ($(CONFIG_CMODEL_MEDLOW),y) | |
98 | KBUILD_CFLAGS += -mcmodel=medlow | |
99 | endif | |
100 | ifeq ($(CONFIG_CMODEL_MEDANY),y) | |
101 | KBUILD_CFLAGS += -mcmodel=medany | |
102 | endif | |
ab1ef68e | 103 | |
2f394c0e AS |
104 | # Avoid generating .eh_frame sections. |
105 | KBUILD_CFLAGS += -fno-asynchronous-unwind-tables -fno-unwind-tables | |
106 | ||
e18048da PD |
107 | # The RISC-V attributes frequently cause compatibility issues and provide no |
108 | # information, so just turn them off. | |
109 | KBUILD_CFLAGS += $(call cc-option,-mno-riscv-attribute) | |
110 | KBUILD_AFLAGS += $(call cc-option,-mno-riscv-attribute) | |
111 | KBUILD_CFLAGS += $(call as-option,-Wa$(comma)-mno-arch-attr) | |
112 | KBUILD_AFLAGS += $(call as-option,-Wa$(comma)-mno-arch-attr) | |
113 | ||
ab1ef68e | 114 | KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-relax) |
c1f6eff3 | 115 | KBUILD_AFLAGS_MODULE += $(call as-option,-Wa$(comma)-mno-relax) |
fbe934d6 PD |
116 | |
117 | # GCC versions that support the "-mstrict-align" option default to allowing | |
118 | # unaligned accesses. While unaligned accesses are explicitly allowed in the | |
119 | # RISC-V ISA, they're emulated by machine mode traps on all extant | |
120 | # architectures. It's faster to have GCC emit only aligned accesses. | |
b6da6cbe | 121 | ifneq ($(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS),y) |
fbe934d6 | 122 | KBUILD_CFLAGS += $(call cc-option,-mstrict-align) |
b6da6cbe | 123 | endif |
fbe934d6 | 124 | |
fea2fed2 GR |
125 | ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y) |
126 | prepare: stack_protector_prepare | |
127 | stack_protector_prepare: prepare0 | |
128 | $(eval KBUILD_CFLAGS += -mstack-protector-guard=tls \ | |
129 | -mstack-protector-guard-reg=tp \ | |
130 | -mstack-protector-guard-offset=$(shell \ | |
131 | awk '{if ($$2 == "TSK_STACK_CANARY") print $$3;}' \ | |
132 | include/generated/asm-offsets.h)) | |
133 | endif | |
134 | ||
889d746e LVO |
135 | # arch specific predefines for sparse |
136 | CHECKFLAGS += -D__riscv -D__riscv_xlen=$(BITS) | |
137 | ||
c0fbcd99 AP |
138 | # Default target when executing plain make |
139 | boot := arch/riscv/boot | |
44c92257 VW |
140 | ifeq ($(CONFIG_XIP_KERNEL),y) |
141 | KBUILD_IMAGE := $(boot)/xipImage | |
142 | else | |
0bfbc914 | 143 | ifeq ($(CONFIG_RISCV_M_MODE)$(CONFIG_SOC_CANAAN_K210),yy) |
3b938e23 MY |
144 | KBUILD_IMAGE := $(boot)/loader.bin |
145 | else | |
146 | ifeq ($(CONFIG_EFI_ZBOOT),) | |
c0fbcd99 | 147 | KBUILD_IMAGE := $(boot)/Image.gz |
3b938e23 MY |
148 | else |
149 | KBUILD_IMAGE := $(boot)/vmlinuz.efi | |
150 | endif | |
151 | endif | |
44c92257 | 152 | endif |
c0fbcd99 | 153 | |
e79dfcbf ERB |
154 | boot := arch/riscv/boot |
155 | boot-image-y := Image | |
156 | boot-image-$(CONFIG_KERNEL_BZIP2) := Image.bz2 | |
157 | boot-image-$(CONFIG_KERNEL_GZIP) := Image.gz | |
158 | boot-image-$(CONFIG_KERNEL_LZ4) := Image.lz4 | |
159 | boot-image-$(CONFIG_KERNEL_LZMA) := Image.lzma | |
160 | boot-image-$(CONFIG_KERNEL_LZO) := Image.lzo | |
161 | boot-image-$(CONFIG_KERNEL_ZSTD) := Image.zst | |
ab4ce983 | 162 | boot-image-$(CONFIG_KERNEL_XZ) := Image.xz |
e79dfcbf ERB |
163 | ifdef CONFIG_RISCV_M_MODE |
164 | boot-image-$(CONFIG_ARCH_CANAAN) := loader.bin | |
165 | endif | |
166 | boot-image-$(CONFIG_EFI_ZBOOT) := vmlinuz.efi | |
167 | boot-image-$(CONFIG_XIP_KERNEL) := xipImage | |
168 | KBUILD_IMAGE := $(boot)/$(boot-image-y) | |
169 | ||
fbe934d6 | 170 | libs-y += arch/riscv/lib/ |
d7071743 | 171 | libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a |
fbe934d6 | 172 | |
5a19c7e0 | 173 | ifeq ($(KBUILD_EXTMOD),) |
a290f510 | 174 | ifeq ($(CONFIG_MMU),y) |
fde9c59a SA |
175 | prepare: vdso_prepare |
176 | vdso_prepare: prepare0 | |
177 | $(Q)$(MAKE) $(build)=arch/riscv/kernel/vdso include/generated/vdso-offsets.h | |
0715372a GR |
178 | $(if $(CONFIG_COMPAT),$(Q)$(MAKE) \ |
179 | $(build)=arch/riscv/kernel/compat_vdso include/generated/compat_vdso-offsets.h) | |
180 | ||
a290f510 | 181 | endif |
5a19c7e0 | 182 | endif |
fde9c59a | 183 | |
56769ba4 | 184 | vdso-install-y += arch/riscv/kernel/vdso/vdso.so.dbg |
4b0bf9a0 | 185 | vdso-install-$(CONFIG_COMPAT) += arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg |
56769ba4 | 186 | |
ab4ce983 | 187 | BOOT_TARGETS := Image Image.gz Image.bz2 Image.lz4 Image.lzma Image.lzo Image.zst Image.xz loader loader.bin xipImage vmlinuz.efi |
c0fbcd99 | 188 | |
405fe7aa | 189 | all: $(notdir $(KBUILD_IMAGE)) |
c0fbcd99 | 190 | |
c4db7ff7 | 191 | loader.bin: loader |
ab4ce983 | 192 | Image.gz Image.bz2 Image.lz4 Image.lzma Image.lzo Image.zst Image.xz loader xipImage vmlinuz.efi: Image |
e79dfcbf | 193 | |
405fe7aa | 194 | $(BOOT_TARGETS): vmlinux |
c0fbcd99 | 195 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ |
405fe7aa | 196 | @$(kecho) ' Kernel: $(boot)/$@ is ready' |
c0fbcd99 | 197 | |
e79dfcbf ERB |
198 | # the install target always installs KBUILD_IMAGE (which may be compressed) |
199 | # but keep the zinstall target for compatibility with older releases | |
399c1ec8 | 200 | install zinstall: |
f774f5bb | 201 | $(call cmd,install) |
2c42bcbb | 202 | |
5d4595db RD |
203 | PHONY += rv32_randconfig |
204 | rv32_randconfig: | |
205 | $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/riscv/configs/32-bit.config \ | |
206 | -f $(srctree)/Makefile randconfig | |
207 | ||
208 | PHONY += rv64_randconfig | |
209 | rv64_randconfig: | |
210 | $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/riscv/configs/64-bit.config \ | |
211 | -f $(srctree)/Makefile randconfig | |
72f045d1 GR |
212 | |
213 | PHONY += rv32_defconfig | |
214 | rv32_defconfig: | |
215 | $(Q)$(MAKE) -f $(srctree)/Makefile defconfig 32-bit.config | |
77c0c966 JT |
216 | |
217 | PHONY += rv32_nommu_virt_defconfig | |
218 | rv32_nommu_virt_defconfig: | |
219 | $(Q)$(MAKE) -f $(srctree)/Makefile nommu_virt_defconfig 32-bit.config | |
07501c49 ERB |
220 | |
221 | define archhelp | |
222 | echo ' Image - Uncompressed kernel image (arch/riscv/boot/Image)' | |
223 | echo ' Image.gz - Compressed kernel image (arch/riscv/boot/Image.gz)' | |
224 | echo ' Image.bz2 - Compressed kernel image (arch/riscv/boot/Image.bz2)' | |
225 | echo ' Image.lz4 - Compressed kernel image (arch/riscv/boot/Image.lz4)' | |
226 | echo ' Image.lzma - Compressed kernel image (arch/riscv/boot/Image.lzma)' | |
227 | echo ' Image.lzo - Compressed kernel image (arch/riscv/boot/Image.lzo)' | |
228 | echo ' Image.zst - Compressed kernel image (arch/riscv/boot/Image.zst)' | |
ab4ce983 | 229 | echo ' Image.xz - Compressed kernel image (arch/riscv/boot/Image.xz)' |
07501c49 ERB |
230 | echo ' vmlinuz.efi - Compressed EFI kernel image (arch/riscv/boot/vmlinuz.efi)' |
231 | echo ' Default when CONFIG_EFI_ZBOOT=y' | |
232 | echo ' xipImage - Execute-in-place kernel image (arch/riscv/boot/xipImage)' | |
233 | echo ' Default when CONFIG_XIP_KERNEL=y' | |
234 | echo ' install - Install kernel using (your) ~/bin/$(INSTALLKERNEL) or' | |
235 | echo ' (distribution) /sbin/$(INSTALLKERNEL) or install to ' | |
236 | echo ' $$(INSTALL_PATH)' | |
237 | endef |