Commit | Line | Data |
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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 ($(CONFIG_ARCH_RV64I),y) | |
30 | BITS := 64 | |
31 | UTS_MACHINE := riscv64 | |
32 | ||
33 | KBUILD_CFLAGS += -mabi=lp64 | |
34 | KBUILD_AFLAGS += -mabi=lp64 | |
a89757da | 35 | |
d503ac53 | 36 | KBUILD_LDFLAGS += -melf64lriscv |
fbe934d6 PD |
37 | else |
38 | BITS := 32 | |
39 | UTS_MACHINE := riscv32 | |
40 | ||
41 | KBUILD_CFLAGS += -mabi=ilp32 | |
42 | KBUILD_AFLAGS += -mabi=ilp32 | |
d503ac53 | 43 | KBUILD_LDFLAGS += -melf32lriscv |
fbe934d6 PD |
44 | endif |
45 | ||
ec3a5cb6 | 46 | ifeq ($(CONFIG_LD_IS_LLD),y) |
fccb3d3e | 47 | ifeq ($(call test-lt, $(CONFIG_LLD_VERSION), 150000),y) |
ec3a5cb6 KR |
48 | KBUILD_CFLAGS += -mno-relax |
49 | KBUILD_AFLAGS += -mno-relax | |
52cc02b9 | 50 | ifndef CONFIG_AS_IS_LLVM |
ec3a5cb6 KR |
51 | KBUILD_CFLAGS += -Wa,-mno-relax |
52 | KBUILD_AFLAGS += -Wa,-mno-relax | |
53 | endif | |
54 | endif | |
3cebf80e | 55 | endif |
ec3a5cb6 | 56 | |
e8be5302 | 57 | # ISA string setting |
09afac77 CH |
58 | riscv-march-$(CONFIG_ARCH_RV32I) := rv32ima |
59 | riscv-march-$(CONFIG_ARCH_RV64I) := rv64ima | |
9671f706 | 60 | riscv-march-$(CONFIG_FPU) := $(riscv-march-y)fd |
e8be5302 | 61 | riscv-march-$(CONFIG_RISCV_ISA_C) := $(riscv-march-y)c |
fa8e7cce | 62 | riscv-march-$(CONFIG_RISCV_ISA_V) := $(riscv-march-y)v |
6df2a016 | 63 | |
e89c2e81 NC |
64 | ifdef CONFIG_TOOLCHAIN_NEEDS_OLD_ISA_SPEC |
65 | KBUILD_CFLAGS += -Wa,-misa-spec=2.2 | |
66 | KBUILD_AFLAGS += -Wa,-misa-spec=2.2 | |
67 | else | |
68 | riscv-march-$(CONFIG_TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI) := $(riscv-march-y)_zicsr_zifencei | |
69 | endif | |
6df2a016 | 70 | |
8eb060e1 | 71 | # Check if the toolchain supports Zihintpause extension |
aae538cd | 72 | riscv-march-$(CONFIG_TOOLCHAIN_HAS_ZIHINTPAUSE) := $(riscv-march-y)_zihintpause |
8eb060e1 | 73 | |
fa8e7cce GR |
74 | # Remove F,D,V from isa string for all. Keep extensions between "fd" and "v" by |
75 | # matching non-v and non-multi-letter extensions out with the filter ([^v_]*) | |
76 | KBUILD_CFLAGS += -march=$(shell echo $(riscv-march-y) | sed -E 's/(rv32ima|rv64ima)fd([^v_]*)v?/\1\2/') | |
77 | ||
e8be5302 | 78 | KBUILD_AFLAGS += -march=$(riscv-march-y) |
fbe934d6 | 79 | |
fbe934d6 PD |
80 | KBUILD_CFLAGS += -mno-save-restore |
81 | KBUILD_CFLAGS += -DCONFIG_PAGE_OFFSET=$(CONFIG_PAGE_OFFSET) | |
82 | ||
83 | ifeq ($(CONFIG_CMODEL_MEDLOW),y) | |
84 | KBUILD_CFLAGS += -mcmodel=medlow | |
85 | endif | |
86 | ifeq ($(CONFIG_CMODEL_MEDANY),y) | |
87 | KBUILD_CFLAGS += -mcmodel=medany | |
88 | endif | |
ab1ef68e | 89 | |
2f394c0e AS |
90 | # Avoid generating .eh_frame sections. |
91 | KBUILD_CFLAGS += -fno-asynchronous-unwind-tables -fno-unwind-tables | |
92 | ||
e18048da PD |
93 | # The RISC-V attributes frequently cause compatibility issues and provide no |
94 | # information, so just turn them off. | |
95 | KBUILD_CFLAGS += $(call cc-option,-mno-riscv-attribute) | |
96 | KBUILD_AFLAGS += $(call cc-option,-mno-riscv-attribute) | |
97 | KBUILD_CFLAGS += $(call as-option,-Wa$(comma)-mno-arch-attr) | |
98 | KBUILD_AFLAGS += $(call as-option,-Wa$(comma)-mno-arch-attr) | |
99 | ||
ab1ef68e | 100 | KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-relax) |
c1f6eff3 | 101 | KBUILD_AFLAGS_MODULE += $(call as-option,-Wa$(comma)-mno-relax) |
fbe934d6 PD |
102 | |
103 | # GCC versions that support the "-mstrict-align" option default to allowing | |
104 | # unaligned accesses. While unaligned accesses are explicitly allowed in the | |
105 | # RISC-V ISA, they're emulated by machine mode traps on all extant | |
106 | # architectures. It's faster to have GCC emit only aligned accesses. | |
107 | KBUILD_CFLAGS += $(call cc-option,-mstrict-align) | |
108 | ||
fea2fed2 GR |
109 | ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y) |
110 | prepare: stack_protector_prepare | |
111 | stack_protector_prepare: prepare0 | |
112 | $(eval KBUILD_CFLAGS += -mstack-protector-guard=tls \ | |
113 | -mstack-protector-guard-reg=tp \ | |
114 | -mstack-protector-guard-offset=$(shell \ | |
115 | awk '{if ($$2 == "TSK_STACK_CANARY") print $$3;}' \ | |
116 | include/generated/asm-offsets.h)) | |
117 | endif | |
118 | ||
889d746e LVO |
119 | # arch specific predefines for sparse |
120 | CHECKFLAGS += -D__riscv -D__riscv_xlen=$(BITS) | |
121 | ||
c0fbcd99 AP |
122 | # Default target when executing plain make |
123 | boot := arch/riscv/boot | |
44c92257 VW |
124 | ifeq ($(CONFIG_XIP_KERNEL),y) |
125 | KBUILD_IMAGE := $(boot)/xipImage | |
126 | else | |
c0fbcd99 | 127 | KBUILD_IMAGE := $(boot)/Image.gz |
44c92257 | 128 | endif |
c0fbcd99 | 129 | |
fbe934d6 | 130 | libs-y += arch/riscv/lib/ |
d7071743 | 131 | libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a |
fbe934d6 | 132 | |
5a19c7e0 | 133 | ifeq ($(KBUILD_EXTMOD),) |
a290f510 | 134 | ifeq ($(CONFIG_MMU),y) |
fde9c59a SA |
135 | prepare: vdso_prepare |
136 | vdso_prepare: prepare0 | |
137 | $(Q)$(MAKE) $(build)=arch/riscv/kernel/vdso include/generated/vdso-offsets.h | |
0715372a GR |
138 | $(if $(CONFIG_COMPAT),$(Q)$(MAKE) \ |
139 | $(build)=arch/riscv/kernel/compat_vdso include/generated/compat_vdso-offsets.h) | |
140 | ||
a290f510 | 141 | endif |
5a19c7e0 | 142 | endif |
fde9c59a | 143 | |
56769ba4 MY |
144 | vdso-install-y += arch/riscv/kernel/vdso/vdso.so.dbg |
145 | vdso-install-$(CONFIG_COMPAT) += arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg:../compat_vdso/compat_vdso.so | |
146 | ||
44c92257 | 147 | ifneq ($(CONFIG_XIP_KERNEL),y) |
19ba9cf7 | 148 | ifeq ($(CONFIG_RISCV_M_MODE)$(CONFIG_ARCH_CANAAN),yy) |
37809df4 | 149 | KBUILD_IMAGE := $(boot)/loader.bin |
405fe7aa | 150 | else |
f5579340 | 151 | ifeq ($(CONFIG_EFI_ZBOOT),) |
405fe7aa | 152 | KBUILD_IMAGE := $(boot)/Image.gz |
f5579340 AB |
153 | else |
154 | KBUILD_IMAGE := $(boot)/vmlinuz.efi | |
155 | endif | |
405fe7aa | 156 | endif |
44c92257 | 157 | endif |
f5579340 | 158 | BOOT_TARGETS := Image Image.gz loader loader.bin xipImage vmlinuz.efi |
c0fbcd99 | 159 | |
405fe7aa | 160 | all: $(notdir $(KBUILD_IMAGE)) |
c0fbcd99 | 161 | |
405fe7aa | 162 | $(BOOT_TARGETS): vmlinux |
c0fbcd99 | 163 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ |
405fe7aa | 164 | @$(kecho) ' Kernel: $(boot)/$@ is ready' |
c0fbcd99 | 165 | |
c18d7c17 KW |
166 | Image.%: Image |
167 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ | |
168 | ||
f774f5bb MY |
169 | install: KBUILD_IMAGE := $(boot)/Image |
170 | zinstall: KBUILD_IMAGE := $(boot)/Image.gz | |
399c1ec8 | 171 | install zinstall: |
f774f5bb | 172 | $(call cmd,install) |
2c42bcbb | 173 | |
5d4595db RD |
174 | PHONY += rv32_randconfig |
175 | rv32_randconfig: | |
176 | $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/riscv/configs/32-bit.config \ | |
177 | -f $(srctree)/Makefile randconfig | |
178 | ||
179 | PHONY += rv64_randconfig | |
180 | rv64_randconfig: | |
181 | $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/riscv/configs/64-bit.config \ | |
182 | -f $(srctree)/Makefile randconfig | |
72f045d1 GR |
183 | |
184 | PHONY += rv32_defconfig | |
185 | rv32_defconfig: | |
186 | $(Q)$(MAKE) -f $(srctree)/Makefile defconfig 32-bit.config | |
77c0c966 JT |
187 | |
188 | PHONY += rv32_nommu_virt_defconfig | |
189 | rv32_nommu_virt_defconfig: | |
190 | $(Q)$(MAKE) -f $(srctree)/Makefile nommu_virt_defconfig 32-bit.config |