1 # SPDX-License-Identifier: GPL-2.0 2 3 OBJECT_FILES_NON_STANDARD := y 4 5 purgatory-y := head.o purgatory.o string.o sha256.o mem.o 6 7 targets += $(purgatory-y) purgatory.lds purgatory purgatory.chk purgatory.ro 8 PURGATORY_OBJS = $(addprefix $(obj)/,$(purgatory-y)) 9 10 $(obj)/sha256.o: $(srctree)/lib/crypto/sha256.c FORCE 11 $(call if_changed_rule,cc_o_c) 12 13 CFLAGS_sha256.o := -D__DISABLE_EXPORTS 14 15 $(obj)/mem.o: $(srctree)/arch/s390/lib/mem.S FORCE 16 $(call if_changed_rule,as_o_S) 17 18 KCOV_INSTRUMENT := n 19 GCOV_PROFILE := n 20 UBSAN_SANITIZE := n 21 KASAN_SANITIZE := n 22 KCSAN_SANITIZE := n 23 24 KBUILD_CFLAGS := -fno-strict-aliasing -Wall -Wstrict-prototypes 25 KBUILD_CFLAGS += -Wno-pointer-sign -Wno-sign-compare 26 KBUILD_CFLAGS += -fno-zero-initialized-in-bss -fno-builtin -ffreestanding 27 KBUILD_CFLAGS += -c -MD -Os -m64 -msoft-float -fno-common 28 KBUILD_CFLAGS += -fno-stack-protector 29 KBUILD_CFLAGS += $(CLANG_FLAGS) 30 KBUILD_CFLAGS += $(call cc-option,-fno-PIE) 31 KBUILD_AFLAGS := $(filter-out -DCC_USING_EXPOLINE,$(KBUILD_AFLAGS)) 32 33 # Since we link purgatory with -r unresolved symbols are not checked, so we 34 # also link a purgatory.chk binary without -r to check for unresolved symbols. 35 PURGATORY_LDFLAGS := -nostdlib -z nodefaultlib 36 LDFLAGS_purgatory := -r $(PURGATORY_LDFLAGS) -T 37 LDFLAGS_purgatory.chk := -e purgatory_start $(PURGATORY_LDFLAGS) 38 $(obj)/purgatory: $(obj)/purgatory.lds $(PURGATORY_OBJS) FORCE 39 $(call if_changed,ld) 40 41 $(obj)/purgatory.chk: $(obj)/purgatory FORCE 42 $(call if_changed,ld) 43 44 OBJCOPYFLAGS_purgatory.ro := -O elf64-s390 45 OBJCOPYFLAGS_purgatory.ro += --remove-section='*debug*' 46 OBJCOPYFLAGS_purgatory.ro += --remove-section='.comment' 47 OBJCOPYFLAGS_purgatory.ro += --remove-section='.note.*' 48 $(obj)/purgatory.ro: $(obj)/purgatory $(obj)/purgatory.chk FORCE 49 $(call if_changed,objcopy) 50 51 $(obj)/kexec-purgatory.o: $(obj)/kexec-purgatory.S $(obj)/purgatory.ro FORCE 52 $(call if_changed_rule,as_o_S) 53 54 obj-$(CONFIG_ARCH_HAS_KEXEC_PURGATORY) += kexec-purgatory.o 55