1# SPDX-License-Identifier: GPL-2.0 2# This file was copied from arm64/kernel/pi/Makefile. 3 4KBUILD_CFLAGS := $(subst $(CC_FLAGS_FTRACE),,$(KBUILD_CFLAGS)) -fpie \ 5 -Os -DDISABLE_BRANCH_PROFILING $(DISABLE_STACKLEAK_PLUGIN) \ 6 $(call cc-option,-mbranch-protection=none) \ 7 -I$(srctree)/scripts/dtc/libfdt -fno-stack-protector \ 8 -include $(srctree)/include/linux/hidden.h \ 9 -D__DISABLE_EXPORTS -ffreestanding \ 10 -fno-asynchronous-unwind-tables -fno-unwind-tables \ 11 $(call cc-option,-fno-addrsig) 12 13# Disable LTO 14KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_LTO), $(KBUILD_CFLAGS)) 15 16KBUILD_CFLAGS += -mcmodel=medany 17 18CFLAGS_cmdline_early.o += -D__NO_FORTIFY 19CFLAGS_fdt_early.o += -D__NO_FORTIFY 20# lib/string.c already defines __NO_FORTIFY 21CFLAGS_ctype.o += -D__NO_FORTIFY 22CFLAGS_lib-fdt.o += -D__NO_FORTIFY 23CFLAGS_lib-fdt_ro.o += -D__NO_FORTIFY 24CFLAGS_archrandom_early.o += -D__NO_FORTIFY 25 26$(obj)/%.pi.o: OBJCOPYFLAGS := --prefix-symbols=__pi_ \ 27 --remove-section=.note.gnu.property \ 28 --prefix-alloc-sections=.init.pi 29$(obj)/%.pi.o: $(obj)/%.o FORCE 30 $(call if_changed,objcopy) 31 32$(obj)/lib-%.o: $(srctree)/lib/%.c FORCE 33 $(call if_changed_rule,cc_o_c) 34 35$(obj)/string.o: $(srctree)/lib/string.c FORCE 36 $(call if_changed_rule,cc_o_c) 37 38$(obj)/ctype.o: $(srctree)/lib/ctype.c FORCE 39 $(call if_changed_rule,cc_o_c) 40 41obj-y := cmdline_early.pi.o fdt_early.pi.o string.pi.o ctype.pi.o lib-fdt.pi.o lib-fdt_ro.pi.o archrandom_early.pi.o 42extra-y := $(patsubst %.pi.o,%.o,$(obj-y)) 43