xref: /openbmc/linux/arch/x86/purgatory/Makefile (revision fa0a497b)
1OBJECT_FILES_NON_STANDARD := y
2
3purgatory-y := purgatory.o stack.o setup-x86_$(BITS).o sha256.o entry64.o string.o
4
5targets += $(purgatory-y)
6PURGATORY_OBJS = $(addprefix $(obj)/,$(purgatory-y))
7
8LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined -nostdlib -z nodefaultlib
9targets += purgatory.ro
10
11# Default KBUILD_CFLAGS can have -pg option set when FTRACE is enabled. That
12# in turn leaves some undefined symbols like __fentry__ in purgatory and not
13# sure how to relocate those. Like kexec-tools, use custom flags.
14
15KBUILD_CFLAGS := -fno-strict-aliasing -Wall -Wstrict-prototypes -fno-zero-initialized-in-bss -fno-builtin -ffreestanding -c -MD -Os -mcmodel=large
16KBUILD_CFLAGS += -m$(BITS)
17
18$(obj)/purgatory.ro: $(PURGATORY_OBJS) FORCE
19		$(call if_changed,ld)
20
21targets += kexec-purgatory.c
22
23CMD_BIN2C = $(objtree)/scripts/basic/bin2c
24quiet_cmd_bin2c = BIN2C   $@
25      cmd_bin2c = $(CMD_BIN2C) kexec_purgatory < $< > $@
26
27$(obj)/kexec-purgatory.c: $(obj)/purgatory.ro FORCE
28	$(call if_changed,bin2c)
29	@:
30
31
32obj-$(CONFIG_KEXEC_FILE)	+= kexec-purgatory.o
33