1# SPDX-License-Identifier: GPL-2.0 2OBJECT_FILES_NON_STANDARD := y 3 4purgatory-y := purgatory.o stack.o setup-x86_$(BITS).o sha256.o entry64.o string.o 5 6targets += $(purgatory-y) 7PURGATORY_OBJS = $(addprefix $(obj)/,$(purgatory-y)) 8 9LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined -nostdlib -z nodefaultlib 10targets += purgatory.ro 11 12KASAN_SANITIZE := n 13KCOV_INSTRUMENT := n 14 15# Default KBUILD_CFLAGS can have -pg option set when FTRACE is enabled. That 16# in turn leaves some undefined symbols like __fentry__ in purgatory and not 17# sure how to relocate those. Like kexec-tools, use custom flags. 18 19KBUILD_CFLAGS := -fno-strict-aliasing -Wall -Wstrict-prototypes -fno-zero-initialized-in-bss -fno-builtin -ffreestanding -c -MD -Os -mcmodel=large 20KBUILD_CFLAGS += -m$(BITS) 21KBUILD_CFLAGS += $(call cc-option,-fno-PIE) 22 23$(obj)/purgatory.ro: $(PURGATORY_OBJS) FORCE 24 $(call if_changed,ld) 25 26targets += kexec-purgatory.c 27 28CMD_BIN2C = $(objtree)/scripts/basic/bin2c 29quiet_cmd_bin2c = BIN2C $@ 30 cmd_bin2c = $(CMD_BIN2C) kexec_purgatory < $< > $@ 31 32$(obj)/kexec-purgatory.c: $(obj)/purgatory.ro FORCE 33 $(call if_changed,bin2c) 34 35obj-$(CONFIG_KEXEC_FILE) += kexec-purgatory.o 36