linux-yocto/arch/powerpc/kernel/Makefile

SPDX-License-Identifier: GPL-2.0

Makefile for the linux kernel.

ifdef CONFIG_PPC64 CFLAGS_prom_init.o += $(NO_MINIMAL_TOC) $(call cc-disable-warning, attribute-alias) CFLAGS_ptrace.o += $(call cc-disable-warning, array-bounds) CFLAGS_syscalls.o += $(call cc-disable-warning, attribute-alias) endif ifdef CONFIG_PPC32 CFLAGS_prom_init.o += -fPIC CFLAGS_btext.o += -fPIC endif

CFLAGS_early_32.o += $(DISABLE_LATENT_ENTROPY_PLUGIN) CFLAGS_cputable.o += $(DISABLE_LATENT_ENTROPY_PLUGIN) CFLAGS_prom_init.o += $(DISABLE_LATENT_ENTROPY_PLUGIN) CFLAGS_btext.o += $(DISABLE_LATENT_ENTROPY_PLUGIN) CFLAGS_prom.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)

CFLAGS_prom_init.o += -fno-stack-protector CFLAGS_prom_init.o += -DDISABLE_BRANCH_PROFILING CFLAGS_prom_init.o += -ffreestanding CFLAGS_prom_init.o += $(call cc-option, -ftrivial-auto-var-init=uninitialized)

ifdef CONFIG_FUNCTION_TRACER

Do not trace early boot code

CFLAGS_REMOVE_cputable.o = $(CC_FLAGS_FTRACE) CFLAGS_REMOVE_prom_init.o = $(CC_FLAGS_FTRACE) CFLAGS_REMOVE_btext.o = $(CC_FLAGS_FTRACE) CFLAGS_REMOVE_prom.o = $(CC_FLAGS_FTRACE) endif

KASAN_SANITIZE_early_32.o := n KASAN_SANITIZE_cputable.o := n KASAN_SANITIZE_prom_init.o := n KASAN_SANITIZE_btext.o := n KASAN_SANITIZE_paca.o := n KASAN_SANITIZE_setup_64.o := n KASAN_SANITIZE_mce.o := n KASAN_SANITIZE_mce_power.o := n KASAN_SANITIZE_udbg.o := n KASAN_SANITIZE_udbg_16550.o := n

we have to be particularly careful in ppc64 to exclude code that

runs with translations off, as we cannot access the shadow with

translations off. However, ppc32 can sanitize this.

ifdef CONFIG_PPC64 KASAN_SANITIZE_traps.o := n endif

ifdef CONFIG_KASAN CFLAGS_early_32.o += -DDISABLE_BRANCH_PROFILING CFLAGS_cputable.o += -DDISABLE_BRANCH_PROFILING CFLAGS_btext.o += -DDISABLE_BRANCH_PROFILING endif

KCSAN_SANITIZE_early_32.o := n KCSAN_SANITIZE_early_64.o := n KCSAN_SANITIZE_cputable.o := n KCSAN_SANITIZE_btext.o := n KCSAN_SANITIZE_paca.o := n KCSAN_SANITIZE_setup_64.o := n

#ifdef CONFIG_RANDOMIZE_KSTACK_OFFSET

Remove stack protector to avoid triggering unneeded stack canary

checks due to randomize_kstack_offset.

CFLAGS_REMOVE_syscall.o = -fstack-protector -fstack-protector-strong CFLAGS_syscall.o += -fno-stack-protector #endif

obj-y := cputable.o syscalls.o switch.o
irq.o align.o signal_$(BITS).o pmc.o vdso.o
process.o systbl.o idle.o
signal.o sysfs.o cacheinfo.o time.o
prom.o traps.o setup-common.o
udbg.o misc.o io.o misc_$(BITS).o
of_platform.o prom_parse.o firmware.o
hw_breakpoint_constraints.o interrupt.o
kdebugfs.o stacktrace.o syscall.o obj-y += ptrace/ obj-$(CONFIG_PPC64) += setup_64.o irq_64.o
paca.o nvram_64.o note.o obj-$(CONFIG_PPC32) += sys_ppc32.o obj-$(CONFIG_COMPAT) += sys_ppc32.o signal_32.o obj-$(CONFIG_VDSO32) += vdso32_wrapper.o obj-$(CONFIG_PPC_WATCHDOG) += watchdog.o obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o obj-$(CONFIG_PPC_DAWR) += dawr.o obj-$(CONFIG_PPC_BOOK3S_64) += cpu_setup_ppc970.o cpu_setup_pa6t.o obj-$(CONFIG_PPC_BOOK3S_64) += cpu_setup_power.o obj-$(CONFIG_PPC_BOOK3S_64) += mce.o mce_power.o obj-$(CONFIG_PPC_BOOK3E_64) += exceptions-64e.o idle_64e.o obj-$(CONFIG_PPC_BARRIER_NOSPEC) += security.o obj-$(CONFIG_PPC64) += vdso64_wrapper.o obj-$(CONFIG_ALTIVEC) += vecemu.o obj-$(CONFIG_PPC_BOOK3S_IDLE) += idle_book3s.o procfs-y := proc_powerpc.o obj-$(CONFIG_PROC_FS) += $(procfs-y) rtaspci-$(CONFIG_PPC64)-$(CONFIG_PCI) := rtas_pci.o obj-$(CONFIG_PPC_RTAS) += rtas_entry.o rtas.o rtas-rtc.o $(rtaspci-y-y) obj-$(CONFIG_PPC_RTAS_DAEMON) += rtasd.o obj-$(CONFIG_RTAS_FLASH) += rtas_flash.o obj-$(CONFIG_RTAS_PROC) += rtas-proc.o obj-$(CONFIG_PPC_DT_CPU_FTRS) += dt_cpu_ftrs.o obj-$(CONFIG_EEH) += eeh.o eeh_pe.o eeh_cache.o
eeh_driver.o eeh_event.o eeh_sysfs.o obj-$(CONFIG_GENERIC_TBSYNC) += smp-tbsync.o obj-$(CONFIG_CRASH_DUMP) += crash_dump.o obj-$(CONFIG_FA_DUMP) += fadump.o obj-$(CONFIG_PRESERVE_FA_DUMP) += fadump.o obj-$(CONFIG_PPC_85xx) += idle_85xx.o obj-$(CONFIG_PPC_BOOK3S_32) += idle_6xx.o l2cr_6xx.o cpu_setup_6xx.o obj-$(CONFIG_TAU) += tau_6xx.o obj-$(CONFIG_HIBERNATION) += swsusp.o suspend.o ifdef CONFIG_PPC_85xx obj-$(CONFIG_HIBERNATION) += swsusp_85xx.o else obj-$(CONFIG_HIBERNATION) += swsusp_$(BITS).o endif obj64-$(CONFIG_HIBERNATION) += swsusp_asm64.o obj-$(CONFIG_MODULES) += module.o module_$(BITS).o obj-$(CONFIG_44x) += cpu_setup_44x.o obj-$(CONFIG_PPC_E500) += cpu_setup_e500.o obj-$(CONFIG_PPC_DOORBELL) += dbell.o obj-$(CONFIG_JUMP_LABEL) += jump_label.o

obj-$(CONFIG_PPC64) += head_64.o obj-$(CONFIG_PPC_BOOK3S_32) += head_book3s_32.o obj-$(CONFIG_40x) += head_40x.o obj-$(CONFIG_44x) += head_44x.o obj-$(CONFIG_PPC_8xx) += head_8xx.o obj-$(CONFIG_PPC_85xx) += head_85xx.o extra-y += vmlinux.lds

obj-$(CONFIG_RELOCATABLE) += reloc_$(BITS).o

obj-$(CONFIG_PPC32) += entry_32.o setup_32.o early_32.o static_call.o obj-$(CONFIG_PPC64) += dma-iommu.o iommu.o obj-$(CONFIG_KGDB) += kgdb.o obj-$(CONFIG_BOOTX_TEXT) += btext.o obj-$(CONFIG_SMP) += smp.o obj-$(CONFIG_KPROBES) += kprobes.o obj-$(CONFIG_OPTPROBES) += optprobes.o optprobes_head.o obj-$(CONFIG_KPROBES_ON_FTRACE) += kprobes-ftrace.o obj-$(CONFIG_UPROBES) += uprobes.o obj-$(CONFIG_PPC_UDBG_16550) += legacy_serial.o udbg_16550.o obj-$(CONFIG_SWIOTLB) += dma-swiotlb.o obj-$(CONFIG_ARCH_HAS_DMA_SET_MASK) += dma-mask.o

pci64-$(CONFIG_PPC64) += pci_dn.o pci-hotplug.o isa-bridge.o obj-$(CONFIG_PCI) += pci_$(BITS).o $(pci64-y)
pci-common.o pci_of_scan.o obj-$(CONFIG_PCI_MSI) += msi.o

obj-$(CONFIG_AUDIT) += audit.o obj64-$(CONFIG_AUDIT) += compat_audit.o

obj-$(CONFIG_PPC_IO_WORKAROUNDS) += io-workarounds.o

obj-y += trace/

ifneq ($(CONFIG_PPC_INDIRECT_PIO),y) obj-y += iomap.o endif

obj64-$(CONFIG_PPC_TRANSACTIONAL_MEM) += tm.o

ifneq ($(CONFIG_XMON)$(CONFIG_KEXEC_CORE)$(CONFIG_PPC_BOOK3S),) obj-y += ppc_save_regs.o endif

obj-$(CONFIG_EPAPR_PARAVIRT) += epapr_paravirt.o epapr_hcalls.o obj-$(CONFIG_KVM_GUEST) += kvm.o kvm_emul.o ifneq ($(CONFIG_PPC_POWERNV)$(CONFIG_PPC_SVM),) obj-y += ucall.o endif

obj-$(CONFIG_PPC_SECURE_BOOT) += secure_boot.o ima_arch.o secvar-ops.o obj-$(CONFIG_PPC_SECVAR_SYSFS) += secvar-sysfs.o

Disable GCOV, KCOV & sanitizers in odd or sensitive code

GCOV_PROFILE_prom_init.o := n KCOV_INSTRUMENT_prom_init.o := n KCSAN_SANITIZE_prom_init.o := n UBSAN_SANITIZE_prom_init.o := n GCOV_PROFILE_kprobes.o := n KCOV_INSTRUMENT_kprobes.o := n KCSAN_SANITIZE_kprobes.o := n UBSAN_SANITIZE_kprobes.o := n GCOV_PROFILE_kprobes-ftrace.o := n KCOV_INSTRUMENT_kprobes-ftrace.o := n KCSAN_SANITIZE_kprobes-ftrace.o := n UBSAN_SANITIZE_kprobes-ftrace.o := n GCOV_PROFILE_syscall_64.o := n KCOV_INSTRUMENT_syscall_64.o := n UBSAN_SANITIZE_syscall_64.o := n UBSAN_SANITIZE_vdso.o := n

Necessary for booting with kcov enabled on book3e machines

KCOV_INSTRUMENT_cputable.o := n KCOV_INSTRUMENT_setup_64.o := n KCOV_INSTRUMENT_paca.o := n

CFLAGS_setup_64.o += -fno-stack-protector CFLAGS_paca.o += -fno-stack-protector

obj-$(CONFIG_PPC_FPU) += fpu.o obj-$(CONFIG_ALTIVEC) += vector.o

obj-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += prom_init.o obj64-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += prom_entry_64.o extra-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += prom_init_check

obj-$(CONFIG_PPC64) += $(obj64-y) obj-$(CONFIG_PPC32) += $(obj32-y)

quiet_cmd_prom_init_check = PROMCHK $@ cmd_prom_init_check = $(CONFIG_SHELL) $< "$(NM)" $(obj)/prom_init.o; touch $@

$(obj)/prom_init_check: $(src)/prom_init_check.sh $(obj)/prom_init.o FORCE $(call if_changed,prom_init_check) targets += prom_init_check

clean-files := vmlinux.lds

Force dependency (incbin is bad)

$(obj)/vdso32_wrapper.o : $(obj)/vdso/vdso32.so.dbg $(obj)/vdso64_wrapper.o : $(obj)/vdso/vdso64.so.dbg

for cleaning

subdir- += vdso