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 10always := realmode.bin realmode.relocs 11 12wakeup-objs := wakeup_asm.o wakemain.o video-mode.o 13wakeup-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. 18wakeup-objs += video-vga.o 19wakeup-objs += video-vesa.o 20wakeup-objs += video-bios.o 21 22realmode-y += header.o 23realmode-y += trampoline_$(BITS).o 24realmode-y += stack.o 25realmode-y += reboot.o 26realmode-$(CONFIG_ACPI_SLEEP) += $(wakeup-objs) 27 28targets += $(realmode-y) 29 30REALMODE_OBJS = $(addprefix $(obj)/,$(realmode-y)) 31 32sed-pasyms := -n -r -e 's/^([0-9a-fA-F]+) [ABCDGRSTVW] (.+)$$/pa_\2 = \2;/p' 33 34quiet_cmd_pasyms = PASYMS $@ 35 cmd_pasyms = $(NM) $(filter-out FORCE,$^) | \ 36 sed $(sed-pasyms) | sort | uniq > $@ 37 38targets += pasyms.h 39$(obj)/pasyms.h: $(REALMODE_OBJS) FORCE 40 $(call if_changed,pasyms) 41 42targets += realmode.lds 43$(obj)/realmode.lds: $(obj)/pasyms.h 44 45LDFLAGS_realmode.elf := --emit-relocs -T 46CPPFLAGS_realmode.lds += -P -C -I$(obj) 47 48targets += realmode.elf 49$(obj)/realmode.elf: $(obj)/realmode.lds $(REALMODE_OBJS) FORCE 50 $(call if_changed,ld) 51 52OBJCOPYFLAGS_realmode.bin := -O binary 53 54targets += realmode.bin 55$(obj)/realmode.bin: $(obj)/realmode.elf $(obj)/realmode.relocs 56 $(call if_changed,objcopy) 57 58quiet_cmd_relocs = RELOCS $@ 59 cmd_relocs = arch/x86/tools/relocs --realmode $< > $@ 60 61targets += realmode.relocs 62$(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. 69KBUILD_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 -fno-pic \ 76 -mno-mmx -mno-sse \ 77 $(call cc-option, -ffreestanding) \ 78 $(call cc-option, -fno-toplevel-reorder,\ 79 $(call cc-option, -fno-unit-at-a-time)) \ 80 $(call cc-option, -fno-stack-protector) \ 81 $(call cc-option, -mpreferred-stack-boundary=2) 82KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ 83GCOV_PROFILE := n 84