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 always := realmode.bin realmode.relocs
  11
  12 wakeup-objs     := wakeup_asm.o wakemain.o video-mode.o
  13 wakeup-objs     += copy.o bioscall.o regs.o
  14 # The link order of the video-*.o modules can matter.  In particular,
  15 # video-vga.o *must* be listed first, followed by video-vesa.o.
  16 # Hardware-specific drivers should follow in the order they should be
  17 # probed, and video-bios.o should typically be last.
  18 wakeup-objs     += video-vga.o
  19 wakeup-objs     += video-vesa.o
  20 wakeup-objs     += video-bios.o
  21
  22 realmode-y                      += header.o
  23 realmode-y                      += trampoline_$(BITS).o
  24 realmode-y                      += stack.o
  25 realmode-y                      += reboot.o
  26 realmode-$(CONFIG_ACPI_SLEEP)   += $(wakeup-objs)
  27
  28 targets += $(realmode-y)
  29
  30 REALMODE_OBJS = $(addprefix $(obj)/,$(realmode-y))
  31
  32 sed-pasyms := -n -r -e 's/^([0-9a-fA-F]+) [ABCDGRSTVW] (.+)$$/pa_\2 = \2;/p'
  33
  34 quiet_cmd_pasyms = PASYMS  $@
  35       cmd_pasyms = $(NM) $(filter-out FORCE,$^) | \
  36                    sed $(sed-pasyms) | sort | uniq > $@
  37
  38 targets += pasyms.h
  39 $(obj)/pasyms.h: $(REALMODE_OBJS) FORCE
  40         $(call if_changed,pasyms)
  41
  42 targets += realmode.lds
  43 $(obj)/realmode.lds: $(obj)/pasyms.h
  44
  45 LDFLAGS_realmode.elf := --emit-relocs -T
  46 CPPFLAGS_realmode.lds += -P -C -I$(obj)
  47
  48 targets += realmode.elf
  49 $(obj)/realmode.elf: $(obj)/realmode.lds $(REALMODE_OBJS) FORCE
  50         $(call if_changed,ld)
  51
  52 OBJCOPYFLAGS_realmode.bin := -O binary
  53
  54 targets += realmode.bin
  55 $(obj)/realmode.bin: $(obj)/realmode.elf $(obj)/realmode.relocs
  56         $(call if_changed,objcopy)
  57
  58 quiet_cmd_relocs = RELOCS  $@
  59       cmd_relocs = arch/x86/tools/relocs --realmode $< > $@
  60
  61 targets += realmode.relocs
  62 $(obj)/realmode.relocs: $(obj)/realmode.elf FORCE
  63         $(call if_changed,relocs)
  64
  65 # ---------------------------------------------------------------------------
  66
  67 # How to compile the 16-bit code.  Note we always compile for -march=i386,
  68 # that way we can complain to the user if the CPU is insufficient.
  69 KBUILD_CFLAGS   := $(LINUXINCLUDE) -m32 -g -Os -D_SETUP -D__KERNEL__ -D_WAKEUP \
  70                    -I$(srctree)/arch/x86/boot \
  71                    -DDISABLE_BRANCH_PROFILING \
  72                    -Wall -Wstrict-prototypes \
  73                    -march=i386 -mregparm=3 \
  74                    -include $(srctree)/$(src)/../../boot/code16gcc.h \
  75                    -fno-strict-aliasing -fomit-frame-pointer \
  76                    $(call cc-option, -ffreestanding) \
  77                    $(call cc-option, -fno-toplevel-reorder,\
  78                         $(call cc-option, -fno-unit-at-a-time)) \
  79                    $(call cc-option, -fno-stack-protector) \
  80                    $(call cc-option, -mpreferred-stack-boundary=2)
  81 KBUILD_AFLAGS   := $(KBUILD_CFLAGS) -D__ASSEMBLY__
  82 GCOV_PROFILE := n