Commit | Line | Data |
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fbe934d6 PD |
1 | # This file is included by the global makefile so that you can add your own |
2 | # architecture-specific flags and dependencies. Remember to do have actions | |
3 | # for "archclean" and "archdep" for cleaning up and making dependencies for | |
4 | # this architecture | |
5 | # | |
6 | # This file is subject to the terms and conditions of the GNU General Public | |
7 | # License. See the file "COPYING" in the main directory of this archive | |
8 | # for more details. | |
9 | # | |
10 | ||
fbe934d6 PD |
11 | OBJCOPYFLAGS := -O binary |
12 | LDFLAGS_vmlinux := | |
a1d2a6b4 AK |
13 | ifeq ($(CONFIG_DYNAMIC_FTRACE),y) |
14 | LDFLAGS_vmlinux := --no-relax | |
afc76b8b GR |
15 | KBUILD_CPPFLAGS += -DCC_USING_PATCHABLE_FUNCTION_ENTRY |
16 | CC_FLAGS_FTRACE := -fpatchable-function-entry=8 | |
a1d2a6b4 | 17 | endif |
aad15bc8 | 18 | |
5d2388db | 19 | ifeq ($(CONFIG_CMODEL_MEDLOW),y) |
aad15bc8 VC |
20 | KBUILD_CFLAGS_MODULE += -mcmodel=medany |
21 | endif | |
fbe934d6 | 22 | |
fbe934d6 PD |
23 | export BITS |
24 | ifeq ($(CONFIG_ARCH_RV64I),y) | |
25 | BITS := 64 | |
26 | UTS_MACHINE := riscv64 | |
27 | ||
28 | KBUILD_CFLAGS += -mabi=lp64 | |
29 | KBUILD_AFLAGS += -mabi=lp64 | |
a89757da | 30 | |
d503ac53 | 31 | KBUILD_LDFLAGS += -melf64lriscv |
fbe934d6 PD |
32 | else |
33 | BITS := 32 | |
34 | UTS_MACHINE := riscv32 | |
35 | ||
36 | KBUILD_CFLAGS += -mabi=ilp32 | |
37 | KBUILD_AFLAGS += -mabi=ilp32 | |
d503ac53 | 38 | KBUILD_LDFLAGS += -melf32lriscv |
fbe934d6 PD |
39 | endif |
40 | ||
ec3a5cb6 KR |
41 | ifeq ($(CONFIG_LD_IS_LLD),y) |
42 | KBUILD_CFLAGS += -mno-relax | |
43 | KBUILD_AFLAGS += -mno-relax | |
52cc02b9 | 44 | ifndef CONFIG_AS_IS_LLVM |
ec3a5cb6 KR |
45 | KBUILD_CFLAGS += -Wa,-mno-relax |
46 | KBUILD_AFLAGS += -Wa,-mno-relax | |
47 | endif | |
48 | endif | |
49 | ||
e8be5302 | 50 | # ISA string setting |
09afac77 CH |
51 | riscv-march-$(CONFIG_ARCH_RV32I) := rv32ima |
52 | riscv-march-$(CONFIG_ARCH_RV64I) := rv64ima | |
9671f706 | 53 | riscv-march-$(CONFIG_FPU) := $(riscv-march-y)fd |
e8be5302 AK |
54 | riscv-march-$(CONFIG_RISCV_ISA_C) := $(riscv-march-y)c |
55 | KBUILD_CFLAGS += -march=$(subst fd,,$(riscv-march-y)) | |
56 | KBUILD_AFLAGS += -march=$(riscv-march-y) | |
fbe934d6 | 57 | |
fbe934d6 PD |
58 | KBUILD_CFLAGS += -mno-save-restore |
59 | KBUILD_CFLAGS += -DCONFIG_PAGE_OFFSET=$(CONFIG_PAGE_OFFSET) | |
60 | ||
61 | ifeq ($(CONFIG_CMODEL_MEDLOW),y) | |
62 | KBUILD_CFLAGS += -mcmodel=medlow | |
63 | endif | |
64 | ifeq ($(CONFIG_CMODEL_MEDANY),y) | |
65 | KBUILD_CFLAGS += -mcmodel=medany | |
66 | endif | |
dbeb90b0 MH |
67 | ifeq ($(CONFIG_PERF_EVENTS),y) |
68 | KBUILD_CFLAGS += -fno-omit-frame-pointer | |
69 | endif | |
ab1ef68e ZL |
70 | |
71 | KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-relax) | |
fbe934d6 PD |
72 | |
73 | # GCC versions that support the "-mstrict-align" option default to allowing | |
74 | # unaligned accesses. While unaligned accesses are explicitly allowed in the | |
75 | # RISC-V ISA, they're emulated by machine mode traps on all extant | |
76 | # architectures. It's faster to have GCC emit only aligned accesses. | |
77 | KBUILD_CFLAGS += $(call cc-option,-mstrict-align) | |
78 | ||
fea2fed2 GR |
79 | ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y) |
80 | prepare: stack_protector_prepare | |
81 | stack_protector_prepare: prepare0 | |
82 | $(eval KBUILD_CFLAGS += -mstack-protector-guard=tls \ | |
83 | -mstack-protector-guard-reg=tp \ | |
84 | -mstack-protector-guard-offset=$(shell \ | |
85 | awk '{if ($$2 == "TSK_STACK_CANARY") print $$3;}' \ | |
86 | include/generated/asm-offsets.h)) | |
87 | endif | |
88 | ||
889d746e LVO |
89 | # arch specific predefines for sparse |
90 | CHECKFLAGS += -D__riscv -D__riscv_xlen=$(BITS) | |
91 | ||
c0fbcd99 AP |
92 | # Default target when executing plain make |
93 | boot := arch/riscv/boot | |
44c92257 VW |
94 | ifeq ($(CONFIG_XIP_KERNEL),y) |
95 | KBUILD_IMAGE := $(boot)/xipImage | |
96 | else | |
c0fbcd99 | 97 | KBUILD_IMAGE := $(boot)/Image.gz |
44c92257 | 98 | endif |
c0fbcd99 | 99 | |
fbe934d6 PD |
100 | head-y := arch/riscv/kernel/head.o |
101 | ||
6f4eea90 | 102 | core-$(CONFIG_RISCV_ERRATA_ALTERNATIVE) += arch/riscv/errata/ |
fbe934d6 PD |
103 | |
104 | libs-y += arch/riscv/lib/ | |
d7071743 | 105 | libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a |
fbe934d6 | 106 | |
f157d411 DA |
107 | PHONY += vdso_install |
108 | vdso_install: | |
109 | $(Q)$(MAKE) $(build)=arch/riscv/kernel/vdso $@ | |
110 | ||
a290f510 | 111 | ifeq ($(CONFIG_MMU),y) |
fde9c59a SA |
112 | prepare: vdso_prepare |
113 | vdso_prepare: prepare0 | |
114 | $(Q)$(MAKE) $(build)=arch/riscv/kernel/vdso include/generated/vdso-offsets.h | |
a290f510 | 115 | endif |
fde9c59a | 116 | |
44c92257 | 117 | ifneq ($(CONFIG_XIP_KERNEL),y) |
08734e05 | 118 | ifeq ($(CONFIG_RISCV_M_MODE)$(CONFIG_SOC_CANAAN),yy) |
37809df4 | 119 | KBUILD_IMAGE := $(boot)/loader.bin |
405fe7aa CH |
120 | else |
121 | KBUILD_IMAGE := $(boot)/Image.gz | |
122 | endif | |
44c92257 VW |
123 | endif |
124 | BOOT_TARGETS := Image Image.gz loader loader.bin xipImage | |
c0fbcd99 | 125 | |
405fe7aa | 126 | all: $(notdir $(KBUILD_IMAGE)) |
c0fbcd99 | 127 | |
405fe7aa | 128 | $(BOOT_TARGETS): vmlinux |
c0fbcd99 | 129 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ |
405fe7aa | 130 | @$(kecho) ' Kernel: $(boot)/$@ is ready' |
c0fbcd99 | 131 | |
c18d7c17 KW |
132 | Image.%: Image |
133 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ | |
134 | ||
399c1ec8 MY |
135 | install: install-image = Image |
136 | zinstall: install-image = Image.gz | |
137 | install zinstall: | |
138 | $(CONFIG_SHELL) $(srctree)/$(boot)/install.sh $(KERNELRELEASE) \ | |
139 | $(boot)/$(install-image) System.map "$(INSTALL_PATH)" | |
2c42bcbb KW |
140 | |
141 | archclean: | |
142 | $(Q)$(MAKE) $(clean)=$(boot) |