kernel/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 CMD_BIN2C = $(objtree)/scripts/basic/bin2c
  22 quiet_cmd_bin2c = BIN2C   $@
  23       cmd_bin2c = $(CMD_BIN2C) kexec_purgatory < $< > $@
  24
  25 $(obj)/kexec-purgatory.c: $(obj)/purgatory.ro FORCE
  26         $(call if_changed,bin2c)
  27         @:
  28
  29
  30 obj-$(CONFIG_KEXEC_FILE)        += kexec-purgatory.o