xref: /openbmc/linux/arch/arm64/kernel/Makefile (revision e79e40c8) 
1# SPDX-License-Identifier: GPL-2.0
2#
3# Makefile for the linux kernel.
4#
5
6CFLAGS_armv8_deprecated.o := -I$(src)
7
8CFLAGS_REMOVE_ftrace.o = $(CC_FLAGS_FTRACE)
9CFLAGS_REMOVE_insn.o = $(CC_FLAGS_FTRACE)
10CFLAGS_REMOVE_return_address.o = $(CC_FLAGS_FTRACE)
11
12# Remove stack protector to avoid triggering unneeded stack canary
13# checks due to randomize_kstack_offset.
14CFLAGS_REMOVE_syscall.o	 = -fstack-protector -fstack-protector-strong
15CFLAGS_syscall.o	+= -fno-stack-protector
16
17# When KASAN is enabled, a stack trace is recorded for every alloc/free, which
18# can significantly impact performance. Avoid instrumenting the stack trace
19# collection code to minimize this impact.
20KASAN_SANITIZE_stacktrace.o := n
21
22# It's not safe to invoke KCOV when portions of the kernel environment aren't
23# available or are out-of-sync with HW state. Since `noinstr` doesn't always
24# inhibit KCOV instrumentation, disable it for the entire compilation unit.
25KCOV_INSTRUMENT_entry-common.o := n
26KCOV_INSTRUMENT_idle.o := n
27
28# Object file lists.
29obj-y			:= debug-monitors.o entry.o irq.o fpsimd.o		\
30			   entry-common.o entry-fpsimd.o process.o ptrace.o	\
31			   setup.o signal.o sys.o stacktrace.o time.o traps.o	\
32			   io.o vdso.o hyp-stub.o psci.o cpu_ops.o		\
33			   return_address.o cpuinfo.o cpu_errata.o		\
34			   cpufeature.o alternative.o cacheinfo.o		\
35			   smp.o smp_spin_table.o topology.o smccc-call.o	\
36			   syscall.o proton-pack.o idreg-override.o idle.o	\
37			   patching.o
38
39targets			+= efi-entry.o
40
41OBJCOPYFLAGS := --prefix-symbols=__efistub_
42$(obj)/%.stub.o: $(obj)/%.o FORCE
43	$(call if_changed,objcopy)
44
45obj-$(CONFIG_COMPAT)			+= sys32.o signal32.o			\
46					   sys_compat.o
47obj-$(CONFIG_COMPAT)			+= sigreturn32.o
48obj-$(CONFIG_KUSER_HELPERS)		+= kuser32.o
49obj-$(CONFIG_FUNCTION_TRACER)		+= ftrace.o entry-ftrace.o
50obj-$(CONFIG_MODULES)			+= module.o
51obj-$(CONFIG_ARM64_MODULE_PLTS)		+= module-plts.o
52obj-$(CONFIG_PERF_EVENTS)		+= perf_regs.o perf_callchain.o
53obj-$(CONFIG_HW_PERF_EVENTS)		+= perf_event.o
54obj-$(CONFIG_HAVE_HW_BREAKPOINT)	+= hw_breakpoint.o
55obj-$(CONFIG_CPU_PM)			+= sleep.o suspend.o
56obj-$(CONFIG_CPU_IDLE)			+= cpuidle.o
57obj-$(CONFIG_JUMP_LABEL)		+= jump_label.o
58obj-$(CONFIG_KGDB)			+= kgdb.o
59obj-$(CONFIG_EFI)			+= efi.o efi-entry.stub.o		\
60					   efi-rt-wrapper.o
61obj-$(CONFIG_PCI)			+= pci.o
62obj-$(CONFIG_ARMV8_DEPRECATED)		+= armv8_deprecated.o
63obj-$(CONFIG_ACPI)			+= acpi.o
64obj-$(CONFIG_ACPI_NUMA)			+= acpi_numa.o
65obj-$(CONFIG_ARM64_ACPI_PARKING_PROTOCOL)	+= acpi_parking_protocol.o
66obj-$(CONFIG_PARAVIRT)			+= paravirt.o
67obj-$(CONFIG_RANDOMIZE_BASE)		+= kaslr.o pi/
68obj-$(CONFIG_HIBERNATION)		+= hibernate.o hibernate-asm.o
69obj-$(CONFIG_ELF_CORE)			+= elfcore.o
70obj-$(CONFIG_KEXEC_CORE)		+= machine_kexec.o relocate_kernel.o	\
71					   cpu-reset.o
72obj-$(CONFIG_KEXEC_FILE)		+= machine_kexec_file.o kexec_image.o
73obj-$(CONFIG_ARM64_RELOC_TEST)		+= arm64-reloc-test.o
74arm64-reloc-test-y := reloc_test_core.o reloc_test_syms.o
75obj-$(CONFIG_CRASH_DUMP)		+= crash_dump.o
76obj-$(CONFIG_CRASH_CORE)		+= crash_core.o
77obj-$(CONFIG_ARM_SDE_INTERFACE)		+= sdei.o
78obj-$(CONFIG_ARM64_PTR_AUTH)		+= pointer_auth.o
79obj-$(CONFIG_ARM64_MTE)			+= mte.o
80obj-y					+= vdso-wrap.o
81obj-$(CONFIG_COMPAT_VDSO)		+= vdso32-wrap.o
82
83# Force dependency (vdso*-wrap.S includes vdso.so through incbin)
84$(obj)/vdso-wrap.o: $(obj)/vdso/vdso.so
85$(obj)/vdso32-wrap.o: $(obj)/vdso32/vdso.so
86
87obj-y					+= probes/
88head-y					:= head.o
89extra-y					+= $(head-y) vmlinux.lds
90
91ifeq ($(CONFIG_DEBUG_EFI),y)
92AFLAGS_head.o += -DVMLINUX_PATH="\"$(realpath $(objtree)/vmlinux)\""
93endif
94
95# for cleaning
96subdir- += vdso vdso32
97