| # SPDX-License-Identifier: GPL-2.0 |
| |
| purgatory-y := head.o purgatory.o string.o sha256.o mem.o |
| |
| targets += $(purgatory-y) purgatory.lds purgatory purgatory.chk purgatory.ro |
| PURGATORY_OBJS = $(addprefix $(obj)/,$(purgatory-y)) |
| |
| $(obj)/sha256.o: $(srctree)/lib/crypto/sha256.c FORCE |
| $(call if_changed_rule,cc_o_c) |
| |
| CFLAGS_sha256.o := -D__DISABLE_EXPORTS -D__NO_FORTIFY |
| |
| $(obj)/mem.o: $(srctree)/arch/s390/lib/mem.S FORCE |
| $(call if_changed_rule,as_o_S) |
| |
| KBUILD_CFLAGS := -fno-strict-aliasing -Wall -Wstrict-prototypes |
| KBUILD_CFLAGS += -Wno-pointer-sign -Wno-sign-compare |
| KBUILD_CFLAGS += -fno-zero-initialized-in-bss -fno-builtin -ffreestanding |
| KBUILD_CFLAGS += -Os -m64 -msoft-float -fno-common |
| KBUILD_CFLAGS += -fno-stack-protector |
| KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING |
| KBUILD_CFLAGS += $(CLANG_FLAGS) |
| KBUILD_CFLAGS += $(call cc-option,-fno-PIE) |
| KBUILD_AFLAGS := $(filter-out -DCC_USING_EXPOLINE,$(KBUILD_AFLAGS)) |
| |
| # Since we link purgatory with -r unresolved symbols are not checked, so we |
| # also link a purgatory.chk binary without -r to check for unresolved symbols. |
| PURGATORY_LDFLAGS := -nostdlib -z nodefaultlib |
| LDFLAGS_purgatory := -r $(PURGATORY_LDFLAGS) -T |
| LDFLAGS_purgatory.chk := -e purgatory_start $(PURGATORY_LDFLAGS) |
| $(obj)/purgatory: $(obj)/purgatory.lds $(PURGATORY_OBJS) FORCE |
| $(call if_changed,ld) |
| |
| $(obj)/purgatory.chk: $(obj)/purgatory FORCE |
| $(call if_changed,ld) |
| |
| OBJCOPYFLAGS_purgatory.ro := -O elf64-s390 |
| OBJCOPYFLAGS_purgatory.ro += --remove-section='*debug*' |
| OBJCOPYFLAGS_purgatory.ro += --remove-section='.comment' |
| OBJCOPYFLAGS_purgatory.ro += --remove-section='.note.*' |
| $(obj)/purgatory.ro: $(obj)/purgatory $(obj)/purgatory.chk FORCE |
| $(call if_changed,objcopy) |
| |
| $(obj)/kexec-purgatory.o: $(obj)/purgatory.ro |
| |
| obj-y += kexec-purgatory.o |
