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 ($(CONFIG_DYNAMIC_FTRACE),y) |
14 | LDFLAGS_vmlinux := --no-relax | |
15 | endif | |
fbe934d6 PD |
16 | KBUILD_AFLAGS_MODULE += -fPIC |
17 | KBUILD_CFLAGS_MODULE += -fPIC | |
18 | ||
19 | KBUILD_DEFCONFIG = defconfig | |
20 | ||
21 | export BITS | |
22 | ifeq ($(CONFIG_ARCH_RV64I),y) | |
23 | BITS := 64 | |
24 | UTS_MACHINE := riscv64 | |
25 | ||
26 | KBUILD_CFLAGS += -mabi=lp64 | |
27 | KBUILD_AFLAGS += -mabi=lp64 | |
a89757da | 28 | |
d503ac53 | 29 | KBUILD_LDFLAGS += -melf64lriscv |
fbe934d6 PD |
30 | else |
31 | BITS := 32 | |
32 | UTS_MACHINE := riscv32 | |
33 | ||
34 | KBUILD_CFLAGS += -mabi=ilp32 | |
35 | KBUILD_AFLAGS += -mabi=ilp32 | |
d503ac53 | 36 | KBUILD_LDFLAGS += -melf32lriscv |
fbe934d6 PD |
37 | endif |
38 | ||
39 | KBUILD_CFLAGS += -Wall | |
40 | ||
e8be5302 | 41 | # ISA string setting |
09afac77 CH |
42 | riscv-march-$(CONFIG_ARCH_RV32I) := rv32ima |
43 | riscv-march-$(CONFIG_ARCH_RV64I) := rv64ima | |
9671f706 | 44 | riscv-march-$(CONFIG_FPU) := $(riscv-march-y)fd |
e8be5302 AK |
45 | riscv-march-$(CONFIG_RISCV_ISA_C) := $(riscv-march-y)c |
46 | KBUILD_CFLAGS += -march=$(subst fd,,$(riscv-march-y)) | |
47 | KBUILD_AFLAGS += -march=$(riscv-march-y) | |
fbe934d6 | 48 | |
fbe934d6 PD |
49 | KBUILD_CFLAGS += -mno-save-restore |
50 | KBUILD_CFLAGS += -DCONFIG_PAGE_OFFSET=$(CONFIG_PAGE_OFFSET) | |
51 | ||
52 | ifeq ($(CONFIG_CMODEL_MEDLOW),y) | |
53 | KBUILD_CFLAGS += -mcmodel=medlow | |
54 | endif | |
55 | ifeq ($(CONFIG_CMODEL_MEDANY),y) | |
56 | KBUILD_CFLAGS += -mcmodel=medany | |
57 | endif | |
ab1ef68e ZL |
58 | ifeq ($(CONFIG_MODULE_SECTIONS),y) |
59 | KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/riscv/kernel/module.lds | |
60 | endif | |
61 | ||
62 | KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-relax) | |
fbe934d6 PD |
63 | |
64 | # GCC versions that support the "-mstrict-align" option default to allowing | |
65 | # unaligned accesses. While unaligned accesses are explicitly allowed in the | |
66 | # RISC-V ISA, they're emulated by machine mode traps on all extant | |
67 | # architectures. It's faster to have GCC emit only aligned accesses. | |
68 | KBUILD_CFLAGS += $(call cc-option,-mstrict-align) | |
69 | ||
889d746e LVO |
70 | # arch specific predefines for sparse |
71 | CHECKFLAGS += -D__riscv -D__riscv_xlen=$(BITS) | |
72 | ||
c0fbcd99 AP |
73 | # Default target when executing plain make |
74 | boot := arch/riscv/boot | |
75 | KBUILD_IMAGE := $(boot)/Image.gz | |
76 | ||
fbe934d6 PD |
77 | head-y := arch/riscv/kernel/head.o |
78 | ||
2353ecc6 | 79 | core-y += arch/riscv/kernel/ arch/riscv/mm/ arch/riscv/net/ |
fbe934d6 PD |
80 | |
81 | libs-y += arch/riscv/lib/ | |
82 | ||
f157d411 DA |
83 | PHONY += vdso_install |
84 | vdso_install: | |
85 | $(Q)$(MAKE) $(build)=arch/riscv/kernel/vdso $@ | |
86 | ||
c0fbcd99 AP |
87 | all: Image.gz |
88 | ||
89 | Image: vmlinux | |
90 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ | |
91 | ||
92 | Image.%: Image | |
93 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ | |
94 | ||
95 | zinstall install: | |
96 | $(Q)$(MAKE) $(build)=$(boot) $@ |