Makefile 1.01 KB
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purgatory-y := purgatory.o stack.o setup-x86_$(BITS).o sha256.o entry64.o string.o

targets += $(purgatory-y)
PURGATORY_OBJS = $(addprefix $(obj)/,$(purgatory-y))

LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined -nostdlib -z nodefaultlib
targets += purgatory.ro

# Default KBUILD_CFLAGS can have -pg option set when FTRACE is enabled. That
# in turn leaves some undefined symbols like __fentry__ in purgatory and not
# sure how to relocate those. Like kexec-tools, use custom flags.

KBUILD_CFLAGS := -fno-strict-aliasing -Wall -Wstrict-prototypes -fno-zero-initialized-in-bss -fno-builtin -ffreestanding -c -MD -Os -mcmodel=large
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KBUILD_CFLAGS += -m$(BITS)
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$(obj)/purgatory.ro: $(PURGATORY_OBJS) FORCE
		$(call if_changed,ld)

targets += kexec-purgatory.c

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CMD_BIN2C = $(objtree)/scripts/basic/bin2c
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quiet_cmd_bin2c = BIN2C   $@
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      cmd_bin2c = $(CMD_BIN2C) kexec_purgatory < $< > $@
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$(obj)/kexec-purgatory.c: $(obj)/purgatory.ro FORCE
	$(call if_changed,bin2c)
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	@:
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obj-$(CONFIG_KEXEC_FILE)	+= kexec-purgatory.o