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 $(obj)/string.o: $(srctree)/arch/x86/boot/compressed/string.c FORCE
10 $(call if_changed_rule,cc_o_c)
12 $(obj)/sha256.o: $(srctree)/lib/sha256.c FORCE
13 $(call if_changed_rule,cc_o_c)
15 LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined -nostdlib -z nodefaultlib
16 targets += purgatory.ro
21 # Default KBUILD_CFLAGS can have -pg option set when FTRACE is enabled. That
22 # in turn leaves some undefined symbols like __fentry__ in purgatory and not
23 # sure how to relocate those.
24 ifdef CONFIG_FUNCTION_TRACER
25 CFLAGS_REMOVE_sha256.o += $(CC_FLAGS_FTRACE)
26 CFLAGS_REMOVE_purgatory.o += $(CC_FLAGS_FTRACE)
27 CFLAGS_REMOVE_string.o += $(CC_FLAGS_FTRACE)
28 CFLAGS_REMOVE_kexec-purgatory.o += $(CC_FLAGS_FTRACE)
31 ifdef CONFIG_STACKPROTECTOR
32 CFLAGS_REMOVE_sha256.o += -fstack-protector
33 CFLAGS_REMOVE_purgatory.o += -fstack-protector
34 CFLAGS_REMOVE_string.o += -fstack-protector
35 CFLAGS_REMOVE_kexec-purgatory.o += -fstack-protector
38 ifdef CONFIG_STACKPROTECTOR_STRONG
39 CFLAGS_REMOVE_sha256.o += -fstack-protector-strong
40 CFLAGS_REMOVE_purgatory.o += -fstack-protector-strong
41 CFLAGS_REMOVE_string.o += -fstack-protector-strong
42 CFLAGS_REMOVE_kexec-purgatory.o += -fstack-protector-strong
45 ifdef CONFIG_RETPOLINE
46 CFLAGS_REMOVE_sha256.o += $(RETPOLINE_CFLAGS)
47 CFLAGS_REMOVE_purgatory.o += $(RETPOLINE_CFLAGS)
48 CFLAGS_REMOVE_string.o += $(RETPOLINE_CFLAGS)
49 CFLAGS_REMOVE_kexec-purgatory.o += $(RETPOLINE_CFLAGS)
52 $(obj)/purgatory.ro: $(PURGATORY_OBJS) FORCE
55 targets += kexec-purgatory.c
57 quiet_cmd_bin2c = BIN2C $@
58 cmd_bin2c = $(objtree)/scripts/bin2c kexec_purgatory < $< > $@
60 $(obj)/kexec-purgatory.c: $(obj)/purgatory.ro FORCE
61 $(call if_changed,bin2c)
63 obj-$(CONFIG_KEXEC_FILE) += kexec-purgatory.o