arch/powerpc/kernel/Makefile

Source file repositories/reference/linux-study-clean/arch/powerpc/kernel/Makefile

File Facts

System
Linux kernel
Corpus path
arch/powerpc/kernel/Makefile
Extension
[no extension]
Size
7388 bytes
Lines
221
Domain
Architecture Layer
Bucket
arch/powerpc
Inferred role
Architecture Layer: build/configuration rule
Status
atlas-only

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the linux kernel.
#

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_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 \

Annotation

Implementation Notes