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. 11KASAN_SANITIZE := n 12KCSAN_SANITIZE := n 13OBJECT_FILES_NON_STANDARD := y 14 15# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in. 16KCOV_INSTRUMENT := n 17 18always-y := realmode.bin realmode.relocs 19 20wakeup-objs := wakeup_asm.o wakemain.o video-mode.o 21wakeup-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. 26wakeup-objs += video-vga.o 27wakeup-objs += video-vesa.o 28wakeup-objs += video-bios.o 29 30realmode-y += header.o 31realmode-y += trampoline_$(BITS).o 32realmode-y += stack.o 33realmode-y += reboot.o 34realmode-$(CONFIG_ACPI_SLEEP) += $(wakeup-objs) 35 36targets += $(realmode-y) 37 38REALMODE_OBJS = $(addprefix $(obj)/,$(realmode-y)) 39 40sed-pasyms := -n -r -e 's/^([0-9a-fA-F]+) [ABCDGRSTVW] (.+)$$/pa_\2 = \2;/p' 41 42quiet_cmd_pasyms = PASYMS $@ 43 cmd_pasyms = $(NM) $(real-prereqs) | sed $(sed-pasyms) | sort | uniq > $@ 44 45targets += pasyms.h 46$(obj)/pasyms.h: $(REALMODE_OBJS) FORCE 47 $(call if_changed,pasyms) 48 49targets += realmode.lds 50$(obj)/realmode.lds: $(obj)/pasyms.h 51 52LDFLAGS_realmode.elf := -m elf_i386 --emit-relocs -T 53CPPFLAGS_realmode.lds += -P -C -I$(objtree)/$(obj) 54 55targets += realmode.elf 56$(obj)/realmode.elf: $(obj)/realmode.lds $(REALMODE_OBJS) FORCE 57 $(call if_changed,ld) 58 59OBJCOPYFLAGS_realmode.bin := -O binary 60 61targets += realmode.bin 62$(obj)/realmode.bin: $(obj)/realmode.elf $(obj)/realmode.relocs FORCE 63 $(call if_changed,objcopy) 64 65quiet_cmd_relocs = RELOCS $@ 66 cmd_relocs = arch/x86/tools/relocs --realmode $< > $@ 67 68targets += realmode.relocs 69$(obj)/realmode.relocs: $(obj)/realmode.elf FORCE 70 $(call if_changed,relocs) 71 72# --------------------------------------------------------------------------- 73 74KBUILD_CFLAGS := $(REALMODE_CFLAGS) -D_SETUP -D_WAKEUP \ 75 -I$(srctree)/arch/x86/boot 76KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ 77KBUILD_CFLAGS += -fno-asynchronous-unwind-tables 78GCOV_PROFILE := n 79UBSAN_SANITIZE := n 80