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 | ||
fbe934d6 PD |
9 | OBJCOPYFLAGS := -O binary |
10 | LDFLAGS_vmlinux := | |
a1d2a6b4 AK |
11 | ifeq ($(CONFIG_DYNAMIC_FTRACE),y) |
12 | LDFLAGS_vmlinux := --no-relax | |
afc76b8b | 13 | KBUILD_CPPFLAGS += -DCC_USING_PATCHABLE_FUNCTION_ENTRY |
409c8fb2 | 14 | ifeq ($(CONFIG_RISCV_ISA_C),y) |
409c8fb2 | 15 | CC_FLAGS_FTRACE := -fpatchable-function-entry=4 |
6724a76c GR |
16 | else |
17 | CC_FLAGS_FTRACE := -fpatchable-function-entry=2 | |
409c8fb2 | 18 | endif |
a1d2a6b4 | 19 | endif |
aad15bc8 | 20 | |
5d2388db | 21 | ifeq ($(CONFIG_CMODEL_MEDLOW),y) |
aad15bc8 VC |
22 | KBUILD_CFLAGS_MODULE += -mcmodel=medany |
23 | endif | |
fbe934d6 | 24 | |
fbe934d6 PD |
25 | export BITS |
26 | ifeq ($(CONFIG_ARCH_RV64I),y) | |
27 | BITS := 64 | |
28 | UTS_MACHINE := riscv64 | |
29 | ||
30 | KBUILD_CFLAGS += -mabi=lp64 | |
31 | KBUILD_AFLAGS += -mabi=lp64 | |
a89757da | 32 | |
d503ac53 | 33 | KBUILD_LDFLAGS += -melf64lriscv |
fbe934d6 PD |
34 | else |
35 | BITS := 32 | |
36 | UTS_MACHINE := riscv32 | |
37 | ||
38 | KBUILD_CFLAGS += -mabi=ilp32 | |
39 | KBUILD_AFLAGS += -mabi=ilp32 | |
d503ac53 | 40 | KBUILD_LDFLAGS += -melf32lriscv |
fbe934d6 PD |
41 | endif |
42 | ||
ec3a5cb6 | 43 | ifeq ($(CONFIG_LD_IS_LLD),y) |
fccb3d3e | 44 | ifeq ($(call test-lt, $(CONFIG_LLD_VERSION), 150000),y) |
ec3a5cb6 KR |
45 | KBUILD_CFLAGS += -mno-relax |
46 | KBUILD_AFLAGS += -mno-relax | |
52cc02b9 | 47 | ifndef CONFIG_AS_IS_LLVM |
ec3a5cb6 KR |
48 | KBUILD_CFLAGS += -Wa,-mno-relax |
49 | KBUILD_AFLAGS += -Wa,-mno-relax | |
50 | endif | |
51 | endif | |
3cebf80e | 52 | endif |
ec3a5cb6 | 53 | |
e8be5302 | 54 | # ISA string setting |
09afac77 CH |
55 | riscv-march-$(CONFIG_ARCH_RV32I) := rv32ima |
56 | riscv-march-$(CONFIG_ARCH_RV64I) := rv64ima | |
9671f706 | 57 | riscv-march-$(CONFIG_FPU) := $(riscv-march-y)fd |
e8be5302 | 58 | riscv-march-$(CONFIG_RISCV_ISA_C) := $(riscv-march-y)c |
6df2a016 AJ |
59 | |
60 | # Newer binutils versions default to ISA spec version 20191213 which moves some | |
61 | # instructions from the I extension to the Zicsr and Zifencei extensions. | |
62 | toolchain-need-zicsr-zifencei := $(call cc-option-yn, -march=$(riscv-march-y)_zicsr_zifencei) | |
63 | riscv-march-$(toolchain-need-zicsr-zifencei) := $(riscv-march-y)_zicsr_zifencei | |
64 | ||
8eb060e1 | 65 | # Check if the toolchain supports Zihintpause extension |
aae538cd | 66 | riscv-march-$(CONFIG_TOOLCHAIN_HAS_ZIHINTPAUSE) := $(riscv-march-y)_zihintpause |
8eb060e1 | 67 | |
e8be5302 AK |
68 | KBUILD_CFLAGS += -march=$(subst fd,,$(riscv-march-y)) |
69 | KBUILD_AFLAGS += -march=$(riscv-march-y) | |
fbe934d6 | 70 | |
fbe934d6 PD |
71 | KBUILD_CFLAGS += -mno-save-restore |
72 | KBUILD_CFLAGS += -DCONFIG_PAGE_OFFSET=$(CONFIG_PAGE_OFFSET) | |
73 | ||
74 | ifeq ($(CONFIG_CMODEL_MEDLOW),y) | |
75 | KBUILD_CFLAGS += -mcmodel=medlow | |
76 | endif | |
77 | ifeq ($(CONFIG_CMODEL_MEDANY),y) | |
78 | KBUILD_CFLAGS += -mcmodel=medany | |
79 | endif | |
dbeb90b0 MH |
80 | ifeq ($(CONFIG_PERF_EVENTS),y) |
81 | KBUILD_CFLAGS += -fno-omit-frame-pointer | |
82 | endif | |
ab1ef68e | 83 | |
2f394c0e AS |
84 | # Avoid generating .eh_frame sections. |
85 | KBUILD_CFLAGS += -fno-asynchronous-unwind-tables -fno-unwind-tables | |
86 | ||
ab1ef68e | 87 | KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-relax) |
c1f6eff3 | 88 | KBUILD_AFLAGS_MODULE += $(call as-option,-Wa$(comma)-mno-relax) |
fbe934d6 PD |
89 | |
90 | # GCC versions that support the "-mstrict-align" option default to allowing | |
91 | # unaligned accesses. While unaligned accesses are explicitly allowed in the | |
92 | # RISC-V ISA, they're emulated by machine mode traps on all extant | |
93 | # architectures. It's faster to have GCC emit only aligned accesses. | |
94 | KBUILD_CFLAGS += $(call cc-option,-mstrict-align) | |
95 | ||
fea2fed2 GR |
96 | ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y) |
97 | prepare: stack_protector_prepare | |
98 | stack_protector_prepare: prepare0 | |
99 | $(eval KBUILD_CFLAGS += -mstack-protector-guard=tls \ | |
100 | -mstack-protector-guard-reg=tp \ | |
101 | -mstack-protector-guard-offset=$(shell \ | |
102 | awk '{if ($$2 == "TSK_STACK_CANARY") print $$3;}' \ | |
103 | include/generated/asm-offsets.h)) | |
104 | endif | |
105 | ||
889d746e LVO |
106 | # arch specific predefines for sparse |
107 | CHECKFLAGS += -D__riscv -D__riscv_xlen=$(BITS) | |
108 | ||
c0fbcd99 AP |
109 | # Default target when executing plain make |
110 | boot := arch/riscv/boot | |
44c92257 VW |
111 | ifeq ($(CONFIG_XIP_KERNEL),y) |
112 | KBUILD_IMAGE := $(boot)/xipImage | |
113 | else | |
c0fbcd99 | 114 | KBUILD_IMAGE := $(boot)/Image.gz |
44c92257 | 115 | endif |
c0fbcd99 | 116 | |
fbe934d6 | 117 | libs-y += arch/riscv/lib/ |
d7071743 | 118 | libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a |
fbe934d6 | 119 | |
f157d411 DA |
120 | PHONY += vdso_install |
121 | vdso_install: | |
122 | $(Q)$(MAKE) $(build)=arch/riscv/kernel/vdso $@ | |
0715372a | 123 | $(if $(CONFIG_COMPAT),$(Q)$(MAKE) \ |
88bd24d7 | 124 | $(build)=arch/riscv/kernel/compat_vdso compat_$@) |
f157d411 | 125 | |
5a19c7e0 | 126 | ifeq ($(KBUILD_EXTMOD),) |
a290f510 | 127 | ifeq ($(CONFIG_MMU),y) |
fde9c59a SA |
128 | prepare: vdso_prepare |
129 | vdso_prepare: prepare0 | |
130 | $(Q)$(MAKE) $(build)=arch/riscv/kernel/vdso include/generated/vdso-offsets.h | |
0715372a GR |
131 | $(if $(CONFIG_COMPAT),$(Q)$(MAKE) \ |
132 | $(build)=arch/riscv/kernel/compat_vdso include/generated/compat_vdso-offsets.h) | |
133 | ||
a290f510 | 134 | endif |
5a19c7e0 | 135 | endif |
fde9c59a | 136 | |
44c92257 | 137 | ifneq ($(CONFIG_XIP_KERNEL),y) |
19ba9cf7 | 138 | ifeq ($(CONFIG_RISCV_M_MODE)$(CONFIG_ARCH_CANAAN),yy) |
37809df4 | 139 | KBUILD_IMAGE := $(boot)/loader.bin |
405fe7aa | 140 | else |
f5579340 | 141 | ifeq ($(CONFIG_EFI_ZBOOT),) |
405fe7aa | 142 | KBUILD_IMAGE := $(boot)/Image.gz |
f5579340 AB |
143 | else |
144 | KBUILD_IMAGE := $(boot)/vmlinuz.efi | |
145 | endif | |
405fe7aa | 146 | endif |
44c92257 | 147 | endif |
f5579340 | 148 | BOOT_TARGETS := Image Image.gz loader loader.bin xipImage vmlinuz.efi |
c0fbcd99 | 149 | |
405fe7aa | 150 | all: $(notdir $(KBUILD_IMAGE)) |
c0fbcd99 | 151 | |
405fe7aa | 152 | $(BOOT_TARGETS): vmlinux |
c0fbcd99 | 153 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ |
405fe7aa | 154 | @$(kecho) ' Kernel: $(boot)/$@ is ready' |
c0fbcd99 | 155 | |
c18d7c17 KW |
156 | Image.%: Image |
157 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ | |
158 | ||
f774f5bb MY |
159 | install: KBUILD_IMAGE := $(boot)/Image |
160 | zinstall: KBUILD_IMAGE := $(boot)/Image.gz | |
399c1ec8 | 161 | install zinstall: |
f774f5bb | 162 | $(call cmd,install) |
2c42bcbb | 163 | |
5d4595db RD |
164 | PHONY += rv32_randconfig |
165 | rv32_randconfig: | |
166 | $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/riscv/configs/32-bit.config \ | |
167 | -f $(srctree)/Makefile randconfig | |
168 | ||
169 | PHONY += rv64_randconfig | |
170 | rv64_randconfig: | |
171 | $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/riscv/configs/64-bit.config \ | |
172 | -f $(srctree)/Makefile randconfig | |
72f045d1 GR |
173 | |
174 | PHONY += rv32_defconfig | |
175 | rv32_defconfig: | |
176 | $(Q)$(MAKE) -f $(srctree)/Makefile defconfig 32-bit.config |