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 13KMSAN_SANITIZE := n 14OBJECT_FILES_NON_STANDARD := y 15 16# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in. 17KCOV_INSTRUMENT := n 18 19always-y := realmode.bin realmode.relocs 20 21wakeup-objs := wakeup_asm.o wakemain.o video-mode.o 22wakeup-objs += copy.o bioscall.o regs.o 23# The link order of the video-*.o modules can matter. In particular, 24# video-vga.o *must* be listed first, followed by video-vesa.o. 25# Hardware-specific drivers should follow in the order they should be 26# probed, and video-bios.o should typically be last. 27wakeup-objs += video-vga.o 28wakeup-objs += video-vesa.o 29wakeup-objs += video-bios.o 30 31realmode-y += header.o 32realmode-y += trampoline_$(BITS).o 33realmode-y += stack.o 34realmode-y += reboot.o 35realmode-$(CONFIG_ACPI_SLEEP) += $(wakeup-objs) 36 37targets += $(realmode-y) 38 39REALMODE_OBJS = $(addprefix $(obj)/,$(realmode-y)) 40 41sed-pasyms := -n -r -e 's/^([0-9a-fA-F]+) [ABCDGRSTVW] (.+)$$/pa_\2 = \2;/p' 42 43quiet_cmd_pasyms = PASYMS $@ 44 cmd_pasyms = $(NM) $(real-prereqs) | sed $(sed-pasyms) | sort | uniq > $@ 45 46targets += pasyms.h 47$(obj)/pasyms.h: $(REALMODE_OBJS) FORCE 48 $(call if_changed,pasyms) 49 50targets += realmode.lds 51$(obj)/realmode.lds: $(obj)/pasyms.h 52 53LDFLAGS_realmode.elf := -m elf_i386 --emit-relocs -T 54CPPFLAGS_realmode.lds += -P -C -I$(objtree)/$(obj) 55 56targets += realmode.elf 57$(obj)/realmode.elf: $(obj)/realmode.lds $(REALMODE_OBJS) FORCE 58 $(call if_changed,ld) 59 60OBJCOPYFLAGS_realmode.bin := -O binary 61 62targets += realmode.bin 63$(obj)/realmode.bin: $(obj)/realmode.elf $(obj)/realmode.relocs FORCE 64 $(call if_changed,objcopy) 65 66quiet_cmd_relocs = RELOCS $@ 67 cmd_relocs = arch/x86/tools/relocs --realmode $< > $@ 68 69targets += realmode.relocs 70$(obj)/realmode.relocs: $(obj)/realmode.elf FORCE 71 $(call if_changed,relocs) 72 73# --------------------------------------------------------------------------- 74 75KBUILD_CFLAGS := $(REALMODE_CFLAGS) -D_SETUP -D_WAKEUP \ 76 -I$(srctree)/arch/x86/boot 77KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ 78KBUILD_CFLAGS += -fno-asynchronous-unwind-tables 79GCOV_PROFILE := n 80UBSAN_SANITIZE := n 81