arch/x86/realmode/rm/Makefile

   1 #
   2 # arch/x86/realmode/Makefile
   3 #
   4 # This file is subject to the terms and conditions of the GNU General Public
   5 # License.  See the file "COPYING" in the main directory of this archive
   6 # for more details.
   7 #
   8 #
   9
  10 # Sanitizer runtimes are unavailable and cannot be linked here.
  11 KASAN_SANITIZE                  := n
  12 KCSAN_SANITIZE                  := n
  13 OBJECT_FILES_NON_STANDARD       := y
  14
  15 # Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
  16 KCOV_INSTRUMENT         := n
  17
  18 always-y := realmode.bin realmode.relocs
  19
  20 wakeup-objs     := wakeup_asm.o wakemain.o video-mode.o
  21 wakeup-objs     += copy.o bioscall.o regs.o
  22 # The link order of the video-*.o modules can matter.  In particular,
  23 # video-vga.o *must* be listed first, followed by video-vesa.o.
  24 # Hardware-specific drivers should follow in the order they should be
  25 # probed, and video-bios.o should typically be last.
  26 wakeup-objs     += video-vga.o
  27 wakeup-objs     += video-vesa.o
  28 wakeup-objs     += video-bios.o
  29
  30 realmode-y                      += header.o
  31 realmode-y                      += trampoline_$(BITS).o
  32 realmode-y                      += stack.o
  33 realmode-y                      += reboot.o
  34 realmode-$(CONFIG_ACPI_SLEEP)   += $(wakeup-objs)
  35
  36 targets += $(realmode-y)
  37
  38 REALMODE_OBJS = $(addprefix $(obj)/,$(realmode-y))
  39
  40 sed-pasyms := -n -r -e 's/^([0-9a-fA-F]+) [ABCDGRSTVW] (.+)$$/pa_\2 = \2;/p'
  41
  42 quiet_cmd_pasyms = PASYMS  $@
  43       cmd_pasyms = $(NM) $(real-prereqs) | sed $(sed-pasyms) | sort | uniq > $@
  44
  45 targets += pasyms.h
  46 $(obj)/pasyms.h: $(REALMODE_OBJS) FORCE
  47         $(call if_changed,pasyms)
  48
  49 targets += realmode.lds
  50 $(obj)/realmode.lds: $(obj)/pasyms.h
  51
  52 LDFLAGS_realmode.elf := -m elf_i386 --emit-relocs -T
  53 CPPFLAGS_realmode.lds += -P -C -I$(objtree)/$(obj)
  54
  55 targets += realmode.elf
  56 $(obj)/realmode.elf: $(obj)/realmode.lds $(REALMODE_OBJS) FORCE
  57         $(call if_changed,ld)
  58
  59 OBJCOPYFLAGS_realmode.bin := -O binary
  60
  61 targets += realmode.bin
  62 $(obj)/realmode.bin: $(obj)/realmode.elf $(obj)/realmode.relocs FORCE
  63         $(call if_changed,objcopy)
  64
  65 quiet_cmd_relocs = RELOCS  $@
  66       cmd_relocs = arch/x86/tools/relocs --realmode $< > $@
  67
  68 targets += realmode.relocs
  69 $(obj)/realmode.relocs: $(obj)/realmode.elf FORCE
  70         $(call if_changed,relocs)
  71
  72 # ---------------------------------------------------------------------------
  73
  74 KBUILD_CFLAGS   := $(REALMODE_CFLAGS) -D_SETUP -D_WAKEUP \
  75                    -I$(srctree)/arch/x86/boot
  76 KBUILD_AFLAGS   := $(KBUILD_CFLAGS) -D__ASSEMBLY__
  77 KBUILD_CFLAGS   += -fno-asynchronous-unwind-tables
  78 GCOV_PROFILE := n
  79 UBSAN_SANITIZE := n