x86/purgatory: use approprate -m64/-32 build flag for arch/x86/purgatory
[cascardo/linux.git] / arch / x86 / purgatory / Makefile
1 purgatory-y := purgatory.o stack.o setup-x86_$(BITS).o sha256.o entry64.o string.o
2
3 targets += $(purgatory-y)
4 PURGATORY_OBJS = $(addprefix $(obj)/,$(purgatory-y))
5
6 LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined -nostdlib -z nodefaultlib
7 targets += purgatory.ro
8
9 # Default KBUILD_CFLAGS can have -pg option set when FTRACE is enabled. That
10 # in turn leaves some undefined symbols like __fentry__ in purgatory and not
11 # sure how to relocate those. Like kexec-tools, use custom flags.
12
13 KBUILD_CFLAGS := -fno-strict-aliasing -Wall -Wstrict-prototypes -fno-zero-initialized-in-bss -fno-builtin -ffreestanding -c -MD -Os -mcmodel=large
14 KBUILD_CFLAGS += -m$(BITS)
15
16 $(obj)/purgatory.ro: $(PURGATORY_OBJS) FORCE
17                 $(call if_changed,ld)
18
19 targets += kexec-purgatory.c
20
21 quiet_cmd_bin2c = BIN2C   $@
22       cmd_bin2c = cat $(obj)/purgatory.ro | $(objtree)/scripts/basic/bin2c kexec_purgatory > $(obj)/kexec-purgatory.c
23
24 $(obj)/kexec-purgatory.c: $(obj)/purgatory.ro FORCE
25         $(call if_changed,bin2c)
26
27
28 obj-$(CONFIG_KEXEC_FILE)        += kexec-purgatory.o