1 # SPDX-License-Identifier: GPL-2.0
2 OBJECT_FILES_NON_STANDARD := y
4 purgatory-y := purgatory.o stack.o setup-x86_$(BITS).o sha256.o entry64.o string.o
6 targets += $(purgatory-y)
7 PURGATORY_OBJS = $(addprefix $(obj)/,$(purgatory-y))
9 LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined -nostdlib -z nodefaultlib
10 targets += purgatory.ro
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.
19 KBUILD_CFLAGS := -fno-strict-aliasing -Wall -Wstrict-prototypes -fno-zero-initialized-in-bss -fno-builtin -ffreestanding -c -MD -Os -mcmodel=large
20 KBUILD_CFLAGS += -m$(BITS)
21 KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
23 AFLAGS_REMOVE_setup-x86_$(BITS).o += -Wa,-gdwarf-2
24 AFLAGS_REMOVE_entry64.o += -Wa,-gdwarf-2
26 $(obj)/purgatory.ro: $(PURGATORY_OBJS) FORCE
29 targets += kexec-purgatory.c
31 CMD_BIN2C = $(objtree)/scripts/basic/bin2c
32 quiet_cmd_bin2c = BIN2C $@
33 cmd_bin2c = $(CMD_BIN2C) kexec_purgatory < $< > $@
35 $(obj)/kexec-purgatory.c: $(obj)/purgatory.ro FORCE
36 $(call if_changed,bin2c)
38 obj-$(CONFIG_KEXEC_FILE) += kexec-purgatory.o