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 ($(CONFIG_DYNAMIC_FTRACE),y) |
14 | LDFLAGS_vmlinux := --no-relax | |
15 | endif | |
aad15bc8 VC |
16 | |
17 | ifeq ($(CONFIG_64BIT)$(CONFIG_CMODEL_MEDLOW),yy) | |
18 | KBUILD_CFLAGS_MODULE += -mcmodel=medany | |
19 | endif | |
fbe934d6 | 20 | |
fbe934d6 PD |
21 | export BITS |
22 | ifeq ($(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 | ||
e8be5302 | 39 | # ISA string setting |
09afac77 CH |
40 | riscv-march-$(CONFIG_ARCH_RV32I) := rv32ima |
41 | riscv-march-$(CONFIG_ARCH_RV64I) := rv64ima | |
9671f706 | 42 | riscv-march-$(CONFIG_FPU) := $(riscv-march-y)fd |
e8be5302 AK |
43 | riscv-march-$(CONFIG_RISCV_ISA_C) := $(riscv-march-y)c |
44 | KBUILD_CFLAGS += -march=$(subst fd,,$(riscv-march-y)) | |
45 | KBUILD_AFLAGS += -march=$(riscv-march-y) | |
fbe934d6 | 46 | |
fbe934d6 PD |
47 | KBUILD_CFLAGS += -mno-save-restore |
48 | KBUILD_CFLAGS += -DCONFIG_PAGE_OFFSET=$(CONFIG_PAGE_OFFSET) | |
49 | ||
50 | ifeq ($(CONFIG_CMODEL_MEDLOW),y) | |
51 | KBUILD_CFLAGS += -mcmodel=medlow | |
52 | endif | |
53 | ifeq ($(CONFIG_CMODEL_MEDANY),y) | |
54 | KBUILD_CFLAGS += -mcmodel=medany | |
55 | endif | |
dbeb90b0 MH |
56 | ifeq ($(CONFIG_PERF_EVENTS),y) |
57 | KBUILD_CFLAGS += -fno-omit-frame-pointer | |
58 | endif | |
ab1ef68e ZL |
59 | |
60 | KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-relax) | |
fbe934d6 PD |
61 | |
62 | # GCC versions that support the "-mstrict-align" option default to allowing | |
63 | # unaligned accesses. While unaligned accesses are explicitly allowed in the | |
64 | # RISC-V ISA, they're emulated by machine mode traps on all extant | |
65 | # architectures. It's faster to have GCC emit only aligned accesses. | |
66 | KBUILD_CFLAGS += $(call cc-option,-mstrict-align) | |
67 | ||
889d746e LVO |
68 | # arch specific predefines for sparse |
69 | CHECKFLAGS += -D__riscv -D__riscv_xlen=$(BITS) | |
70 | ||
c0fbcd99 AP |
71 | # Default target when executing plain make |
72 | boot := arch/riscv/boot | |
73 | KBUILD_IMAGE := $(boot)/Image.gz | |
74 | ||
fbe934d6 PD |
75 | head-y := arch/riscv/kernel/head.o |
76 | ||
909548d6 | 77 | core-y += arch/riscv/ |
fbe934d6 PD |
78 | |
79 | libs-y += arch/riscv/lib/ | |
d7071743 | 80 | libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a |
fbe934d6 | 81 | |
f157d411 DA |
82 | PHONY += vdso_install |
83 | vdso_install: | |
84 | $(Q)$(MAKE) $(build)=arch/riscv/kernel/vdso $@ | |
85 | ||
37809df4 CH |
86 | ifeq ($(CONFIG_RISCV_M_MODE)$(CONFIG_SOC_KENDRYTE),yy) |
87 | KBUILD_IMAGE := $(boot)/loader.bin | |
405fe7aa CH |
88 | else |
89 | KBUILD_IMAGE := $(boot)/Image.gz | |
90 | endif | |
37809df4 | 91 | BOOT_TARGETS := Image Image.gz loader loader.bin |
c0fbcd99 | 92 | |
405fe7aa | 93 | all: $(notdir $(KBUILD_IMAGE)) |
c0fbcd99 | 94 | |
405fe7aa | 95 | $(BOOT_TARGETS): vmlinux |
c0fbcd99 | 96 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ |
405fe7aa | 97 | @$(kecho) ' Kernel: $(boot)/$@ is ready' |
c0fbcd99 | 98 | |
c18d7c17 KW |
99 | Image.%: Image |
100 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ | |
101 | ||
c0fbcd99 AP |
102 | zinstall install: |
103 | $(Q)$(MAKE) $(build)=$(boot) $@ |