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 ($(CONFIG_DYNAMIC_FTRACE),y) |
14 | LDFLAGS_vmlinux := --no-relax | |
15 | endif | |
fbe934d6 PD |
16 | KBUILD_AFLAGS_MODULE += -fPIC |
17 | KBUILD_CFLAGS_MODULE += -fPIC | |
18 | ||
fbe934d6 PD |
19 | export BITS |
20 | ifeq ($(CONFIG_ARCH_RV64I),y) | |
21 | BITS := 64 | |
22 | UTS_MACHINE := riscv64 | |
23 | ||
24 | KBUILD_CFLAGS += -mabi=lp64 | |
25 | KBUILD_AFLAGS += -mabi=lp64 | |
a89757da | 26 | |
d503ac53 | 27 | KBUILD_LDFLAGS += -melf64lriscv |
fbe934d6 PD |
28 | else |
29 | BITS := 32 | |
30 | UTS_MACHINE := riscv32 | |
31 | ||
32 | KBUILD_CFLAGS += -mabi=ilp32 | |
33 | KBUILD_AFLAGS += -mabi=ilp32 | |
d503ac53 | 34 | KBUILD_LDFLAGS += -melf32lriscv |
fbe934d6 PD |
35 | endif |
36 | ||
e8be5302 | 37 | # ISA string setting |
09afac77 CH |
38 | riscv-march-$(CONFIG_ARCH_RV32I) := rv32ima |
39 | riscv-march-$(CONFIG_ARCH_RV64I) := rv64ima | |
9671f706 | 40 | riscv-march-$(CONFIG_FPU) := $(riscv-march-y)fd |
e8be5302 AK |
41 | riscv-march-$(CONFIG_RISCV_ISA_C) := $(riscv-march-y)c |
42 | KBUILD_CFLAGS += -march=$(subst fd,,$(riscv-march-y)) | |
43 | KBUILD_AFLAGS += -march=$(riscv-march-y) | |
fbe934d6 | 44 | |
fbe934d6 PD |
45 | KBUILD_CFLAGS += -mno-save-restore |
46 | KBUILD_CFLAGS += -DCONFIG_PAGE_OFFSET=$(CONFIG_PAGE_OFFSET) | |
47 | ||
48 | ifeq ($(CONFIG_CMODEL_MEDLOW),y) | |
49 | KBUILD_CFLAGS += -mcmodel=medlow | |
50 | endif | |
51 | ifeq ($(CONFIG_CMODEL_MEDANY),y) | |
52 | KBUILD_CFLAGS += -mcmodel=medany | |
53 | endif | |
ab1ef68e | 54 | ifeq ($(CONFIG_MODULE_SECTIONS),y) |
10df0638 | 55 | KBUILD_LDS_MODULE += $(srctree)/arch/riscv/kernel/module.lds |
ab1ef68e | 56 | endif |
dbeb90b0 MH |
57 | ifeq ($(CONFIG_PERF_EVENTS),y) |
58 | KBUILD_CFLAGS += -fno-omit-frame-pointer | |
59 | endif | |
ab1ef68e ZL |
60 | |
61 | KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-relax) | |
fbe934d6 PD |
62 | |
63 | # GCC versions that support the "-mstrict-align" option default to allowing | |
64 | # unaligned accesses. While unaligned accesses are explicitly allowed in the | |
65 | # RISC-V ISA, they're emulated by machine mode traps on all extant | |
66 | # architectures. It's faster to have GCC emit only aligned accesses. | |
67 | KBUILD_CFLAGS += $(call cc-option,-mstrict-align) | |
68 | ||
889d746e LVO |
69 | # arch specific predefines for sparse |
70 | CHECKFLAGS += -D__riscv -D__riscv_xlen=$(BITS) | |
71 | ||
c0fbcd99 AP |
72 | # Default target when executing plain make |
73 | boot := arch/riscv/boot | |
74 | KBUILD_IMAGE := $(boot)/Image.gz | |
75 | ||
fbe934d6 PD |
76 | head-y := arch/riscv/kernel/head.o |
77 | ||
909548d6 | 78 | core-y += arch/riscv/ |
fbe934d6 PD |
79 | |
80 | libs-y += arch/riscv/lib/ | |
81 | ||
f157d411 DA |
82 | PHONY += vdso_install |
83 | vdso_install: | |
84 | $(Q)$(MAKE) $(build)=arch/riscv/kernel/vdso $@ | |
85 | ||
c0fbcd99 AP |
86 | all: Image.gz |
87 | ||
88 | Image: vmlinux | |
89 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ | |
90 | ||
91 | Image.%: Image | |
92 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ | |
93 | ||
94 | zinstall install: | |
95 | $(Q)$(MAKE) $(build)=$(boot) $@ |