src/arch/x86/Makefile.inc - mirrors/cros/chromiumos/third_party/coreboot - Git at Google

 ################################################################################
 ##
 ## This file is part of the coreboot project.
 ##
 ## Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
 ## Copyright (C) 2009-2010 coresystems GmbH
 ## Copyright (C) 2009 Ronald G. Minnich
 ##
 ## This program is free software; you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
 ## the Free Software Foundation; version 2 of the License.
 ##
 ## This program is distributed in the hope that it will be useful,
 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 ## GNU General Public License for more details.
 ##

 ################################################################################
 # i386 specific tools
 NVRAMTOOL:=$(objutil)/nvramtool/nvramtool

 OPTION_TABLE_H:=
 ifeq ($(CONFIG_HAVE_OPTION_TABLE),y)

 cbfs-files-y += cmos_layout.bin
 cmos_layout.bin-file = $(obj)/cmos_layout.bin
 cmos_layout.bin-type = cmos_layout

 $(obj)/cmos_layout.bin: $(NVRAMTOOL) $(top)/src/mainboard/$(MAINBOARDDIR)/cmos.layout
 	@printf "    OPTION     $(subst $(obj)/,,$(@))\n"
 	$(NVRAMTOOL) -y $(top)/src/mainboard/$(MAINBOARDDIR)/cmos.layout -L $@

 OPTION_TABLE_H:=$(obj)/option_table.h

 $(OPTION_TABLE_H): $(NVRAMTOOL) $(top)/src/mainboard/$(MAINBOARDDIR)/cmos.layout
 	@printf "    OPTION     $(subst $(obj)/,,$(@))\n"
 	$(NVRAMTOOL) -y $(top)/src/mainboard/$(MAINBOARDDIR)/cmos.layout -H $@
 endif # CONFIG_HAVE_OPTION_TABLE

 stripped_vgabios_id = $(call strip_quotes,$(CONFIG_VGA_BIOS_ID))
 cbfs-files-$(CONFIG_VGA_BIOS) += pci$(stripped_vgabios_id).rom
 pci$(stripped_vgabios_id).rom-file := $(call strip_quotes,$(CONFIG_VGA_BIOS_FILE))
 pci$(stripped_vgabios_id).rom-type := optionrom

 cbfs-files-$(CONFIG_INTEL_MBI) += mbi.bin
 mbi.bin-file := $(call strip_quotes,$(CONFIG_MBI_FILE))
 mbi.bin-type := mbi

 ###############################################################################
 # common support for early assembly includes
 ###############################################################################

 # Chipset specific assembly stubs in the romstage program flow. Certain
 # boards have more than one assembly stub so collect those and put them
 # into a single generated file.
 crt0s = $(cpu_incs-y)

 $(objgenerated)/assembly.inc: $$(crt0s)
 	@printf "    GEN        $(subst $(obj)/,,$(@))\n"
 	printf '$(foreach crt0,$(crt0s),#include "$(crt0)"\n)' > $@


 define early_x86_assembly_entry_rule
 # $1 stage name
 # Add the assembly file that pulls in the rest of the dependencies in
 # the right order. Make sure the auto generated assembly.inc is a proper
 # dependency.
 $(1)-y += assembly_entry.S
 $(call src-to-obj,$(1),$(dir)/assembly_entry.S): $(objgenerated)/assembly.inc
 endef

 define early_x86_stage
 # $1 stage name
 # $2 oformat
 $(1)-y += memlayout.ld

 # The '.' include path is needed for the generated assembly.inc file.
 $(1)-S-ccopts += -I.

 $$(objcbfs)/$(1).debug: $$$$($(1)-libs) $$$$($(1)-objs)
 	@printf "    LINK       $$(subst $$(obj)/,,$$(@))\n"
 	$$(LD_$(1)) $$(LDFLAGS_$(1)) -o $$@ -L$$(obj) $$(COMPILER_RT_FLAGS_$(1)) --whole-archive --start-group $$(filter-out %.ld,$$($(1)-objs)) $$($(1)-libs) --no-whole-archive $$(COMPILER_RT_$(1)) --end-group -T $(call src-to-obj,$(1),$(dir)/memlayout.ld) --oformat $(2)
 	-LANG=C LC_ALL= $$(OBJCOPY_$(1)) --only-section .illegal_globals $$(@) $$(objcbfs)/$(1)_null.offenders >/dev/null 2>&1
 	if [ -z "$$$$($$(NM_$(1)) $$(objcbfs)/$(1)_null.offenders 2>&1 | grep 'no symbols')" ];then \
 		echo "Forbidden global variables in $(1):"; \
 		$$(NM_$(1)) $$(objcbfs)/$(1)_null.offenders; false; \
 	fi
 endef

 ###############################################################################
 # bootblock
 ###############################################################################

 ifeq ($(CONFIG_ARCH_BOOTBLOCK_X86_32)$(CONFIG_ARCH_BOOTBLOCK_X86_64),y)

 bootblock-y += boot.c
 bootblock-y += cpu_common.c
 bootblock-y += memcpy.c
 bootblock-y += memset.c
 bootblock-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c
 bootblock-$(CONFIG_X86_TOP4G_BOOTMEDIA_MAP) += mmap_boot.c

 bootblock-y += id.S
 $(call src-to-obj,bootblock,$(dir)/id.S): $(obj)/build.h

 ifeq ($(CONFIG_C_ENVIRONMENT_BOOTBLOCK),y)

 bootblock-y += bootblock_crt0.S

 ifeq ($(CONFIG_ARCH_BOOTBLOCK_X86_32),y)
 $(eval $(call early_x86_stage,bootblock,elf32-i386))
 else
 $(eval $(call early_x86_stage,bootblock,elf64-x86-64))
 endif

 else # !C_ENVIRONMENT_BOOTBLOCK

 # x86-specific linker flags
 ifeq ($(CONFIG_ARCH_BOOTBLOCK_X86_32),y)
 LDFLAGS_bootblock += -m elf_i386 --oformat elf32-i386
 else
 LDFLAGS_bootblock += -m elf_x86_64 --oformat elf64-x86-64
 endif

 # Add the assembly file that pulls in the rest of the dependencies in
 # the right order. Make sure the auto generated bootblock.inc is a proper
 # dependency. Make the same true for the linker sript.
 bootblock-y += bootblock_romcc.S
 bootblock-y += walkcbfs.S
 $(call src-to-obj,bootblock,$(dir)/bootblock_romcc.S): $(objgenerated)/bootblock.inc

 bootblock-y += bootblock.ld
 $(call src-to-obj,bootblock,$(dir)/bootblock.ld): $(objgenerated)/bootblock.ld

 bootblock_romccflags := -mcpu=i386 -O2 -D__PRE_RAM__ -D__BOOTBLOCK__
 ifeq ($(CONFIG_SSE),y)
 bootblock_romccflags := -mcpu=k7 -msse -O2 -D__PRE_RAM__ -D__BOOTBLOCK__
 endif

 # This is a hack in case there are no per chipset linker files.
 $(objgenerated)/empty: build-dirs
 	touch $@

 $(objgenerated)/bootblock.ld: $$(filter-out $(call src-to-obj,bootblock,src/arch/x86/bootblock.ld), $$(filter %.ld,$$(bootblock-objs))) $(objgenerated)/empty
 	@printf "    GEN        $(subst $(obj)/,,$(@))\n"
 	cat $^ >> $@.tmp
 	mv $@.tmp $@

 $(objgenerated)/bootblock.inc: $(src)/arch/x86/$(subst ",,$(CONFIG_BOOTBLOCK_SOURCE)) $(objutil)/romcc/romcc $(OPTION_TABLE_H) $(KCONFIG_AUTOHEADER)
 # The open quote in the subst messes with syntax highlighting. Fix it - ")
 	@printf "    ROMCC      $(subst $(obj)/,,$(@))\n"
 	$(CC_bootblock) $(CPPFLAGS_bootblock) -MM -MT$(objgenerated)/bootblock.inc \
 		$< > $(objgenerated)/bootblock.inc.d
 	$(ROMCC) -c -S $(bootblock_romccflags) -I. $(CPPFLAGS_bootblock) $< -o $@

 # bootblock.ld is part of $(bootblock-objs)
 $(objcbfs)/bootblock.debug: $$(bootblock-objs)
 	@printf "    LINK       $(subst $(obj)/,,$(@))\n"
 	$(LD_bootblock) $(LDFLAGS_bootblock) -o $@ -L$(obj) \
 		$(filter-out %.ld,$(bootblock-objs)) \
 		-T $(call src-to-obj,bootblock,src/arch/x86/bootblock.ld)

 endif # C_ENVIRONMENT_BOOTBLOCK


 endif # CONFIG_ARCH_BOOTBLOCK_X86_32 / CONFIG_ARCH_BOOTBLOCK_X86_64

 ###############################################################################
 # verstage
 ###############################################################################

 ifeq ($(CONFIG_ARCH_VERSTAGE_X86_32)$(CONFIG_ARCH_VERSTAGE_X86_64),y)

 verstage-y += boot.c

 verstage-$(CONFIG_ARCH_RAMSTAGE_X86_32) += cpu_common.c
 verstage-y += memset.c
 verstage-y += memcpy.c
 verstage-y += memmove.c
 verstage-$(CONFIG_X86_TOP4G_BOOTMEDIA_MAP) += mmap_boot.c
 # If C environment is used for bootblock it means there's no need
 # for a chipset-specific car_stage_entry() so use the generic one
 # which just calls verstage().
 verstage-$(CONFIG_C_ENVIRONMENT_BOOTBLOCK) += verstage.c

 verstage-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c

 verstage-libs += $(objgenerated)/libverstage.a

 $(eval $(call early_x86_assembly_entry_rule,verstage))

 ifeq ($(CONFIG_ARCH_VERSTAGE_X86_32),y)
 $(eval $(call early_x86_stage,verstage,elf32-i386))
 else
 $(eval $(call early_x86_stage,verstage,elf64-x86-64))
 endif

 endif # CONFIG_ARCH_VERSTAGE_X86_32 / CONFIG_ARCH_VERSTAGE_X86_64

 ###############################################################################
 # romstage
 ###############################################################################

 ifeq ($(CONFIG_ARCH_ROMSTAGE_X86_32)$(CONFIG_ARCH_ROMSTAGE_X86_64),y)

 romstage-$(CONFIG_HAVE_ACPI_RESUME) += acpi_s3.c
 romstage-y += boot.c
 romstage-y += cbmem.c
 romstage-y += cbfs_and_run.c
 romstage-$(CONFIG_ARCH_RAMSTAGE_X86_32) += cpu_common.c
 romstage-y += memcpy.c
 romstage-y += memmove.c
 romstage-y += memset.c
 romstage-$(CONFIG_X86_TOP4G_BOOTMEDIA_MAP) += mmap_boot.c
 romstage-y += postcar_loader.c
 romstage-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c

 ifneq ($(CONFIG_ROMCC),y)

 romstage-srcs += $(src)/mainboard/$(MAINBOARDDIR)/romstage.c

 else # CONFIG_ROMCC == y

 # This order matters. The mainboards requiring ROMCC need their mainboard
 # code to follow the prior crt0s files for program flow control. The
 # romstage.inc from the MAINBOARDDIR is implicitly main() for romstage
 # because of the instruction sequen fall-through.
 crt0s += $(obj)/mainboard/$(MAINBOARDDIR)/romstage.inc
 crt0s += $(src)/arch/x86/crt0_romcc_epilogue.inc

 ifeq ($(CONFIG_MMX),y)
 	ifeq ($(CONFIG_SSE),y)
 		ROMCCFLAGS := -mcpu=p4 -O2 # MMX, SSE
 	else
 		ROMCCFLAGS := -mcpu=p2 -O2 # MMX, !SSE
 	endif
 else
 	ROMCCFLAGS := -mcpu=i386 -O2 # !MMX, !SSE
 endif

 $(objcbfs)/romstage%.bin: $(objcbfs)/romstage%.elf
 	@printf "    OBJCOPY    $(subst $(obj)/,,$(@))\n"
 	$(OBJCOPY_romstage) -O binary $< $@

 $(objcbfs)/romstage%.elf: $(objcbfs)/romstage%.debug
 	@printf "    OBJCOPY    $(subst $(obj)/,,$(@))\n"
 	cp $< $@.tmp
 	$(OBJCOPY_romstage) --strip-debug $@.tmp
 	$(OBJCOPY_romstage) --add-gnu-debuglink=$< $@.tmp
 	mv $@.tmp $@

 $(obj)/mainboard/$(MAINBOARDDIR)/romstage.inc: $(src)/mainboard/$(MAINBOARDDIR)/romstage.c $(objutil)/romcc/romcc $(OPTION_TABLE_H) $(obj)/build.h $(obj)/config.h
 	printf "    ROMCC      romstage.inc\n"
 	$(ROMCC) -c -S $(ROMCCFLAGS) -D__ROMSTAGE__ -D__PRE_RAM__ -I. $(CPPFLAGS_romstage) $< -o $@

 endif

 romstage-libs ?=

 $(eval $(call early_x86_assembly_entry_rule,romstage))

 ifeq ($(CONFIG_ARCH_ROMSTAGE_X86_32),y)
 $(eval $(call early_x86_stage,romstage,elf32-i386))
 else
 $(eval $(call early_x86_stage,romstage,elf64-x86-64))
 endif

 # Compiling crt0 with -g seems to trigger https://sourceware.org/bugzilla/show_bug.cgi?id=6428
 romstage-S-ccopts += -g0

 endif # CONFIG_ARCH_ROMSTAGE_X86_32 / CONFIG_ARCH_ROMSTAGE_X86_64

 ###############################################################################
 # postcar
 ###############################################################################

 $(eval $(call create_class_compiler,postcar,x86_32))
 postcar-generic-ccopts += -D__POSTCAR__

 postcar-y += boot.c
 postcar-y += cbfs_and_run.c
 postcar-y += cpu_common.c
 postcar-y += exit_car.S
 postcar-y += memcpy.c
 postcar-y += memmove.c
 postcar-y += memset.c
 postcar-y += memlayout.ld
 postcar-$(CONFIG_X86_TOP4G_BOOTMEDIA_MAP) += mmap_boot.c
 postcar-y += postcar.c
 postcar-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c

 LDFLAGS_postcar += -Map $(objcbfs)/postcar.map

 $(objcbfs)/postcar.debug: $$(postcar-objs)
 	@printf "    LINK       $(subst $(obj)/,,$(@))\n"
 	$(LD_postcar) $(LDFLAGS_postcar) -o $@ -L$(obj) $(COMPILER_RT_FLAGS_postcar) --whole-archive --start-group $(filter-out %.ld,$^) --no-whole-archive $(COMPILER_RT_postcar) --end-group -T $(call src-to-obj,postcar,src/arch/x86/memlayout.ld)

 $(objcbfs)/postcar.elf: $(objcbfs)/postcar.debug.rmod
 	cp $< $@

 # Add postcar to CBFS
 cbfs-files-$(CONFIG_POSTCAR_STAGE)  += $(CONFIG_CBFS_PREFIX)/postcar
 $(CONFIG_CBFS_PREFIX)/postcar-file := $(objcbfs)/postcar.elf
 $(CONFIG_CBFS_PREFIX)/postcar-type := stage
 $(CONFIG_CBFS_PREFIX)/postcar-compression := none

 ###############################################################################
 # ramstage
 ###############################################################################

 ifeq ($(CONFIG_ARCH_RAMSTAGE_X86_32)$(CONFIG_ARCH_RAMSTAGE_X86_64),y)

 ramstage-$(CONFIG_HAVE_ACPI_TABLES) += acpi.c
 ramstage-$(CONFIG_HAVE_ACPI_TABLES) += acpigen.c
 ramstage-$(CONFIG_HAVE_ACPI_TABLES) += acpi_device.c
 ramstage-$(CONFIG_HAVE_ACPI_RESUME) += acpi_s3.c
 ramstage-y += boot.c
 ramstage-y += c_start.S
 ramstage-y += cbmem.c
 ramstage-y += cpu.c
 ramstage-y += cpu_common.c
 ramstage-y += ebda.c
 ramstage-y += exception.c
 ramstage-y += gdt.c
 ramstage-$(CONFIG_IOAPIC) += ioapic.c
 ramstage-y += memcpy.c
 ramstage-y += memlayout.ld
 ramstage-y += memmove.c
 ramstage-y += memset.c
 ramstage-$(CONFIG_X86_TOP4G_BOOTMEDIA_MAP) += mmap_boot.c
 ramstage-$(CONFIG_GENERATE_MP_TABLE) += mpspec.c
 ramstage-y += pci_ops_conf1.c
 ramstage-$(CONFIG_MMCONF_SUPPORT) += pci_ops_mmconf.c
 ramstage-$(CONFIG_GENERATE_PIRQ_TABLE) += pirq_routing.c
 ramstage-$(CONFIG_GENERATE_SMBIOS_TABLES) += smbios.c
 ramstage-y += tables.c
 ramstage-$(CONFIG_COOP_MULTITASKING) += thread.c
 ramstage-$(CONFIG_COOP_MULTITASKING) += thread_switch.S
 ramstage-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c
 ramstage-$(CONFIG_HAVE_ACPI_RESUME) += wakeup.S

 smm-y += memcpy.c
 smm-y += memmove.c
 smm-y += memset.c
 smm-$(CONFIG_X86_TOP4G_BOOTMEDIA_MAP) += mmap_boot.c

 ifeq ($(CONFIG_ARCH_RAMSTAGE_X86_32),y)
 rmodules_x86_32-y += memcpy.c
 rmodules_x86_32-y += memmove.c
 rmodules_x86_32-y += memset.c
 else
 rmodules_x86_64-y += memcpy.c
 rmodules_x86_64-y += memmove.c
 rmodules_x86_64-y += memset.c
 endif

 ifeq ($(CONFIG_ARCH_RAMSTAGE_X86_32),y)
 target-objcopy=-O elf32-i386 -B i386
 endif
 ifeq ($(CONFIG_ARCH_RAMSTAGE_X86_64),y)
 target-objcopy=-O elf64-x86-64 -B i386:x86-64
 endif

 ramstage-srcs += $(wildcard src/mainboard/$(MAINBOARDDIR)/mainboard.c)
 ifeq ($(CONFIG_GENERATE_MP_TABLE),y)
 ifneq ($(wildcard src/mainboard/$(MAINBOARDDIR)/mptable.c),)
 ramstage-srcs += src/mainboard/$(MAINBOARDDIR)/mptable.c
 endif
 endif
 ifeq ($(CONFIG_GENERATE_PIRQ_TABLE),y)
 ramstage-srcs += src/mainboard/$(MAINBOARDDIR)/irq_tables.c
 endif
 ifneq ($(wildcard src/mainboard/$(MAINBOARDDIR)/reset.c),)
 ramstage-srcs += src/mainboard/$(MAINBOARDDIR)/reset.c
 endif
 ifeq ($(CONFIG_HAVE_ACPI_TABLES),y)
 ramstage-srcs += src/mainboard/$(MAINBOARDDIR)/acpi_tables.c
 $(eval $(call asl_template,dsdt))
 ifneq ($(wildcard src/mainboard/$(MAINBOARDDIR)/fadt.c),)
 ramstage-srcs += src/mainboard/$(MAINBOARDDIR)/fadt.c
 endif
 endif # CONFIG_GENERATE_ACPI_TABLES
 ifeq ($(CONFIG_HAVE_SMI_HANDLER),y)
 ifneq ($(wildcard src/mainboard/$(MAINBOARDDIR)/smihandler.c),)
 smm-srcs += src/mainboard/$(MAINBOARDDIR)/smihandler.c
 endif
 endif
 ifneq ($(wildcard src/mainboard/$(MAINBOARDDIR)/get_bus_conf.c),)
 ramstage-srcs += src/mainboard/$(MAINBOARDDIR)/get_bus_conf.c
 endif

 ramstage-libs ?=

 ifeq ($(CONFIG_RELOCATABLE_RAMSTAGE),y)

 # The rmodule_link defintion creates an elf file with .rmod extension.
 $(objcbfs)/ramstage.elf: $(objcbfs)/ramstage.debug.rmod
 	cp $< $@

 endif

 $(objcbfs)/ramstage.debug: $(objgenerated)/ramstage.o $(call src-to-obj,ramstage,src/arch/x86/memlayout.ld)
 	@printf "    CC         $(subst $(obj)/,,$(@))\n"
 	$(LD_ramstage) $(CPPFLAGS) $(LDFLAGS_ramstage) -o $@ -L$(obj) $< -T $(call src-to-obj,ramstage,src/arch/x86/memlayout.ld)

 $(objgenerated)/ramstage.o: $$(ramstage-objs) $(COMPILER_RT_ramstage) $$(ramstage-libs)
 	@printf "    CC         $(subst $(obj)/,,$(@))\n"
 ifeq ($(CONFIG_ARCH_ROMSTAGE_X86_32),y)
 	$(LD_ramstage) -m elf_i386 -r -o $@ $(COMPILER_RT_FLAGS_ramstage) --whole-archive --start-group $(filter-out %.ld,$(ramstage-objs)) $(ramstage-libs) --no-whole-archive $(COMPILER_RT_ramstage) --end-group
 else
 	$(LD_ramstage) -m elf_x86_64 -r -o $@ $(COMPILER_RT_FLAGS_ramstage) --whole-archive --start-group $(filter-out %.ld,$(ramstage-objs)) $(ramstage-libs) --no-whole-archive $(COMPILER_RT_ramstage) --end-group
 endif

 endif # CONFIG_ARCH_RAMSTAGE_X86_32 / CONFIG_ARCH_RAMSTAGE_X86_64
	################################################################################
	##
	## This file is part of the coreboot project.
	##
	## Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
	## Copyright (C) 2009-2010 coresystems GmbH
	## Copyright (C) 2009 Ronald G. Minnich
	##
	## This program is free software; you can redistribute it and/or modify
	## it under the terms of the GNU General Public License as published by
	## the Free Software Foundation; version 2 of the License.
	##
	## This program is distributed in the hope that it will be useful,
	## but WITHOUT ANY WARRANTY; without even the implied warranty of
	## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	## GNU General Public License for more details.
	##

	################################################################################
	# i386 specific tools
	NVRAMTOOL:=$(objutil)/nvramtool/nvramtool

	OPTION_TABLE_H:=
	ifeq ($(CONFIG_HAVE_OPTION_TABLE),y)

	cbfs-files-y += cmos_layout.bin
	cmos_layout.bin-file = $(obj)/cmos_layout.bin
	cmos_layout.bin-type = cmos_layout

	$(obj)/cmos_layout.bin: $(NVRAMTOOL) $(top)/src/mainboard/$(MAINBOARDDIR)/cmos.layout
	@printf " OPTION $(subst $(obj)/,,$(@))\n"
	$(NVRAMTOOL) -y $(top)/src/mainboard/$(MAINBOARDDIR)/cmos.layout -L $@

	OPTION_TABLE_H:=$(obj)/option_table.h

	$(OPTION_TABLE_H): $(NVRAMTOOL) $(top)/src/mainboard/$(MAINBOARDDIR)/cmos.layout
	@printf " OPTION $(subst $(obj)/,,$(@))\n"
	$(NVRAMTOOL) -y $(top)/src/mainboard/$(MAINBOARDDIR)/cmos.layout -H $@
	endif # CONFIG_HAVE_OPTION_TABLE

	stripped_vgabios_id = $(call strip_quotes,$(CONFIG_VGA_BIOS_ID))
	cbfs-files-$(CONFIG_VGA_BIOS) += pci$(stripped_vgabios_id).rom
	pci$(stripped_vgabios_id).rom-file := $(call strip_quotes,$(CONFIG_VGA_BIOS_FILE))
	pci$(stripped_vgabios_id).rom-type := optionrom

	cbfs-files-$(CONFIG_INTEL_MBI) += mbi.bin
	mbi.bin-file := $(call strip_quotes,$(CONFIG_MBI_FILE))
	mbi.bin-type := mbi

	###############################################################################
	# common support for early assembly includes
	###############################################################################

	# Chipset specific assembly stubs in the romstage program flow. Certain
	# boards have more than one assembly stub so collect those and put them
	# into a single generated file.
	crt0s = $(cpu_incs-y)

	$(objgenerated)/assembly.inc: $$(crt0s)
	@printf " GEN $(subst $(obj)/,,$(@))\n"
	printf '$(foreach crt0,$(crt0s),#include "$(crt0)"\n)' > $@


	define early_x86_assembly_entry_rule
	# $1 stage name
	# Add the assembly file that pulls in the rest of the dependencies in
	# the right order. Make sure the auto generated assembly.inc is a proper
	# dependency.
	$(1)-y += assembly_entry.S
	$(call src-to-obj,$(1),$(dir)/assembly_entry.S): $(objgenerated)/assembly.inc
	endef

	define early_x86_stage
	# $1 stage name
	# $2 oformat
	$(1)-y += memlayout.ld

	# The '.' include path is needed for the generated assembly.inc file.
	$(1)-S-ccopts += -I.

	$$(objcbfs)/$(1).debug: $$$$($(1)-libs) $$$$($(1)-objs)
	@printf " LINK $$(subst $$(obj)/,,$$(@))\n"
	$$(LD_$(1)) $$(LDFLAGS_$(1)) -o $$@ -L$$(obj) $$(COMPILER_RT_FLAGS_$(1)) --whole-archive --start-group $$(filter-out %.ld,$$($(1)-objs)) $$($(1)-libs) --no-whole-archive $$(COMPILER_RT_$(1)) --end-group -T $(call src-to-obj,$(1),$(dir)/memlayout.ld) --oformat $(2)
	-LANG=C LC_ALL= $$(OBJCOPY_$(1)) --only-section .illegal_globals $$(@) $$(objcbfs)/$(1)_null.offenders >/dev/null 2>&1
	if [ -z "$$$$($$(NM_$(1)) $$(objcbfs)/$(1)_null.offenders 2>&1 \| grep 'no symbols')" ];then \
	echo "Forbidden global variables in $(1):"; \
	$$(NM_$(1)) $$(objcbfs)/$(1)_null.offenders; false; \
	fi
	endef

	###############################################################################
	# bootblock
	###############################################################################

	ifeq ($(CONFIG_ARCH_BOOTBLOCK_X86_32)$(CONFIG_ARCH_BOOTBLOCK_X86_64),y)

	bootblock-y += boot.c
	bootblock-y += cpu_common.c
	bootblock-y += memcpy.c
	bootblock-y += memset.c
	bootblock-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c
	bootblock-$(CONFIG_X86_TOP4G_BOOTMEDIA_MAP) += mmap_boot.c

	bootblock-y += id.S
	$(call src-to-obj,bootblock,$(dir)/id.S): $(obj)/build.h

	ifeq ($(CONFIG_C_ENVIRONMENT_BOOTBLOCK),y)

	bootblock-y += bootblock_crt0.S

	ifeq ($(CONFIG_ARCH_BOOTBLOCK_X86_32),y)
	$(eval $(call early_x86_stage,bootblock,elf32-i386))
	else
	$(eval $(call early_x86_stage,bootblock,elf64-x86-64))
	endif

	else # !C_ENVIRONMENT_BOOTBLOCK

	# x86-specific linker flags
	ifeq ($(CONFIG_ARCH_BOOTBLOCK_X86_32),y)
	LDFLAGS_bootblock += -m elf_i386 --oformat elf32-i386
	else
	LDFLAGS_bootblock += -m elf_x86_64 --oformat elf64-x86-64
	endif

	# Add the assembly file that pulls in the rest of the dependencies in
	# the right order. Make sure the auto generated bootblock.inc is a proper
	# dependency. Make the same true for the linker sript.
	bootblock-y += bootblock_romcc.S
	bootblock-y += walkcbfs.S
	$(call src-to-obj,bootblock,$(dir)/bootblock_romcc.S): $(objgenerated)/bootblock.inc

	bootblock-y += bootblock.ld
	$(call src-to-obj,bootblock,$(dir)/bootblock.ld): $(objgenerated)/bootblock.ld

	bootblock_romccflags := -mcpu=i386 -O2 -D__PRE_RAM__ -D__BOOTBLOCK__
	ifeq ($(CONFIG_SSE),y)
	bootblock_romccflags := -mcpu=k7 -msse -O2 -D__PRE_RAM__ -D__BOOTBLOCK__
	endif

	# This is a hack in case there are no per chipset linker files.
	$(objgenerated)/empty: build-dirs
	touch $@

	$(objgenerated)/bootblock.ld: $$(filter-out $(call src-to-obj,bootblock,src/arch/x86/bootblock.ld), $$(filter %.ld,$$(bootblock-objs))) $(objgenerated)/empty
	@printf " GEN $(subst $(obj)/,,$(@))\n"
	cat $^ >> $@.tmp
	mv $@.tmp $@

	$(objgenerated)/bootblock.inc: $(src)/arch/x86/$(subst ",,$(CONFIG_BOOTBLOCK_SOURCE)) $(objutil)/romcc/romcc $(OPTION_TABLE_H) $(KCONFIG_AUTOHEADER)
	# The open quote in the subst messes with syntax highlighting. Fix it - ")
	@printf " ROMCC $(subst $(obj)/,,$(@))\n"
	$(CC_bootblock) $(CPPFLAGS_bootblock) -MM -MT$(objgenerated)/bootblock.inc \
	$< > $(objgenerated)/bootblock.inc.d
	$(ROMCC) -c -S $(bootblock_romccflags) -I. $(CPPFLAGS_bootblock) $< -o $@

	# bootblock.ld is part of $(bootblock-objs)
	$(objcbfs)/bootblock.debug: $$(bootblock-objs)
	@printf " LINK $(subst $(obj)/,,$(@))\n"
	$(LD_bootblock) $(LDFLAGS_bootblock) -o $@ -L$(obj) \
	$(filter-out %.ld,$(bootblock-objs)) \
	-T $(call src-to-obj,bootblock,src/arch/x86/bootblock.ld)

	endif # C_ENVIRONMENT_BOOTBLOCK


	endif # CONFIG_ARCH_BOOTBLOCK_X86_32 / CONFIG_ARCH_BOOTBLOCK_X86_64

	###############################################################################
	# verstage
	###############################################################################

	ifeq ($(CONFIG_ARCH_VERSTAGE_X86_32)$(CONFIG_ARCH_VERSTAGE_X86_64),y)

	verstage-y += boot.c

	verstage-$(CONFIG_ARCH_RAMSTAGE_X86_32) += cpu_common.c
	verstage-y += memset.c
	verstage-y += memcpy.c
	verstage-y += memmove.c
	verstage-$(CONFIG_X86_TOP4G_BOOTMEDIA_MAP) += mmap_boot.c
	# If C environment is used for bootblock it means there's no need
	# for a chipset-specific car_stage_entry() so use the generic one
	# which just calls verstage().
	verstage-$(CONFIG_C_ENVIRONMENT_BOOTBLOCK) += verstage.c

	verstage-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c

	verstage-libs += $(objgenerated)/libverstage.a

	$(eval $(call early_x86_assembly_entry_rule,verstage))

	ifeq ($(CONFIG_ARCH_VERSTAGE_X86_32),y)
	$(eval $(call early_x86_stage,verstage,elf32-i386))
	else
	$(eval $(call early_x86_stage,verstage,elf64-x86-64))
	endif

	endif # CONFIG_ARCH_VERSTAGE_X86_32 / CONFIG_ARCH_VERSTAGE_X86_64

	###############################################################################
	# romstage
	###############################################################################

	ifeq ($(CONFIG_ARCH_ROMSTAGE_X86_32)$(CONFIG_ARCH_ROMSTAGE_X86_64),y)

	romstage-$(CONFIG_HAVE_ACPI_RESUME) += acpi_s3.c
	romstage-y += boot.c
	romstage-y += cbmem.c
	romstage-y += cbfs_and_run.c
	romstage-$(CONFIG_ARCH_RAMSTAGE_X86_32) += cpu_common.c
	romstage-y += memcpy.c
	romstage-y += memmove.c
	romstage-y += memset.c
	romstage-$(CONFIG_X86_TOP4G_BOOTMEDIA_MAP) += mmap_boot.c
	romstage-y += postcar_loader.c
	romstage-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c

	ifneq ($(CONFIG_ROMCC),y)

	romstage-srcs += $(src)/mainboard/$(MAINBOARDDIR)/romstage.c

	else # CONFIG_ROMCC == y

	# This order matters. The mainboards requiring ROMCC need their mainboard
	# code to follow the prior crt0s files for program flow control. The
	# romstage.inc from the MAINBOARDDIR is implicitly main() for romstage
	# because of the instruction sequen fall-through.
	crt0s += $(obj)/mainboard/$(MAINBOARDDIR)/romstage.inc
	crt0s += $(src)/arch/x86/crt0_romcc_epilogue.inc

	ifeq ($(CONFIG_MMX),y)
	ifeq ($(CONFIG_SSE),y)
	ROMCCFLAGS := -mcpu=p4 -O2 # MMX, SSE
	else
	ROMCCFLAGS := -mcpu=p2 -O2 # MMX, !SSE
	endif
	else
	ROMCCFLAGS := -mcpu=i386 -O2 # !MMX, !SSE
	endif

	$(objcbfs)/romstage%.bin: $(objcbfs)/romstage%.elf
	@printf " OBJCOPY $(subst $(obj)/,,$(@))\n"
	$(OBJCOPY_romstage) -O binary $< $@

	$(objcbfs)/romstage%.elf: $(objcbfs)/romstage%.debug
	@printf " OBJCOPY $(subst $(obj)/,,$(@))\n"
	cp $< $@.tmp
	$(OBJCOPY_romstage) --strip-debug $@.tmp
	$(OBJCOPY_romstage) --add-gnu-debuglink=$< $@.tmp
	mv $@.tmp $@

	$(obj)/mainboard/$(MAINBOARDDIR)/romstage.inc: $(src)/mainboard/$(MAINBOARDDIR)/romstage.c $(objutil)/romcc/romcc $(OPTION_TABLE_H) $(obj)/build.h $(obj)/config.h
	printf " ROMCC romstage.inc\n"
	$(ROMCC) -c -S $(ROMCCFLAGS) -D__ROMSTAGE__ -D__PRE_RAM__ -I. $(CPPFLAGS_romstage) $< -o $@

	endif

	romstage-libs ?=

	$(eval $(call early_x86_assembly_entry_rule,romstage))

	ifeq ($(CONFIG_ARCH_ROMSTAGE_X86_32),y)
	$(eval $(call early_x86_stage,romstage,elf32-i386))
	else
	$(eval $(call early_x86_stage,romstage,elf64-x86-64))
	endif

	# Compiling crt0 with -g seems to trigger https://sourceware.org/bugzilla/show_bug.cgi?id=6428
	romstage-S-ccopts += -g0

	endif # CONFIG_ARCH_ROMSTAGE_X86_32 / CONFIG_ARCH_ROMSTAGE_X86_64

	###############################################################################
	# postcar
	###############################################################################

	$(eval $(call create_class_compiler,postcar,x86_32))
	postcar-generic-ccopts += -D__POSTCAR__

	postcar-y += boot.c
	postcar-y += cbfs_and_run.c
	postcar-y += cpu_common.c
	postcar-y += exit_car.S
	postcar-y += memcpy.c
	postcar-y += memmove.c
	postcar-y += memset.c
	postcar-y += memlayout.ld
	postcar-$(CONFIG_X86_TOP4G_BOOTMEDIA_MAP) += mmap_boot.c
	postcar-y += postcar.c
	postcar-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c

	LDFLAGS_postcar += -Map $(objcbfs)/postcar.map

	$(objcbfs)/postcar.debug: $$(postcar-objs)
	@printf " LINK $(subst $(obj)/,,$(@))\n"
	$(LD_postcar) $(LDFLAGS_postcar) -o $@ -L$(obj) $(COMPILER_RT_FLAGS_postcar) --whole-archive --start-group $(filter-out %.ld,$^) --no-whole-archive $(COMPILER_RT_postcar) --end-group -T $(call src-to-obj,postcar,src/arch/x86/memlayout.ld)

	$(objcbfs)/postcar.elf: $(objcbfs)/postcar.debug.rmod
	cp $< $@

	# Add postcar to CBFS
	cbfs-files-$(CONFIG_POSTCAR_STAGE) += $(CONFIG_CBFS_PREFIX)/postcar
	$(CONFIG_CBFS_PREFIX)/postcar-file := $(objcbfs)/postcar.elf
	$(CONFIG_CBFS_PREFIX)/postcar-type := stage
	$(CONFIG_CBFS_PREFIX)/postcar-compression := none

	###############################################################################
	# ramstage
	###############################################################################

	ifeq ($(CONFIG_ARCH_RAMSTAGE_X86_32)$(CONFIG_ARCH_RAMSTAGE_X86_64),y)

	ramstage-$(CONFIG_HAVE_ACPI_TABLES) += acpi.c
	ramstage-$(CONFIG_HAVE_ACPI_TABLES) += acpigen.c
	ramstage-$(CONFIG_HAVE_ACPI_TABLES) += acpi_device.c
	ramstage-$(CONFIG_HAVE_ACPI_RESUME) += acpi_s3.c
	ramstage-y += boot.c
	ramstage-y += c_start.S
	ramstage-y += cbmem.c
	ramstage-y += cpu.c
	ramstage-y += cpu_common.c
	ramstage-y += ebda.c
	ramstage-y += exception.c
	ramstage-y += gdt.c
	ramstage-$(CONFIG_IOAPIC) += ioapic.c
	ramstage-y += memcpy.c
	ramstage-y += memlayout.ld
	ramstage-y += memmove.c
	ramstage-y += memset.c
	ramstage-$(CONFIG_X86_TOP4G_BOOTMEDIA_MAP) += mmap_boot.c
	ramstage-$(CONFIG_GENERATE_MP_TABLE) += mpspec.c
	ramstage-y += pci_ops_conf1.c
	ramstage-$(CONFIG_MMCONF_SUPPORT) += pci_ops_mmconf.c
	ramstage-$(CONFIG_GENERATE_PIRQ_TABLE) += pirq_routing.c
	ramstage-$(CONFIG_GENERATE_SMBIOS_TABLES) += smbios.c
	ramstage-y += tables.c
	ramstage-$(CONFIG_COOP_MULTITASKING) += thread.c
	ramstage-$(CONFIG_COOP_MULTITASKING) += thread_switch.S
	ramstage-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c
	ramstage-$(CONFIG_HAVE_ACPI_RESUME) += wakeup.S

	smm-y += memcpy.c
	smm-y += memmove.c
	smm-y += memset.c
	smm-$(CONFIG_X86_TOP4G_BOOTMEDIA_MAP) += mmap_boot.c

	ifeq ($(CONFIG_ARCH_RAMSTAGE_X86_32),y)
	rmodules_x86_32-y += memcpy.c
	rmodules_x86_32-y += memmove.c
	rmodules_x86_32-y += memset.c
	else
	rmodules_x86_64-y += memcpy.c
	rmodules_x86_64-y += memmove.c
	rmodules_x86_64-y += memset.c
	endif

	ifeq ($(CONFIG_ARCH_RAMSTAGE_X86_32),y)
	target-objcopy=-O elf32-i386 -B i386
	endif
	ifeq ($(CONFIG_ARCH_RAMSTAGE_X86_64),y)
	target-objcopy=-O elf64-x86-64 -B i386:x86-64
	endif

	ramstage-srcs += $(wildcard src/mainboard/$(MAINBOARDDIR)/mainboard.c)
	ifeq ($(CONFIG_GENERATE_MP_TABLE),y)
	ifneq ($(wildcard src/mainboard/$(MAINBOARDDIR)/mptable.c),)
	ramstage-srcs += src/mainboard/$(MAINBOARDDIR)/mptable.c
	endif
	endif
	ifeq ($(CONFIG_GENERATE_PIRQ_TABLE),y)
	ramstage-srcs += src/mainboard/$(MAINBOARDDIR)/irq_tables.c
	endif
	ifneq ($(wildcard src/mainboard/$(MAINBOARDDIR)/reset.c),)
	ramstage-srcs += src/mainboard/$(MAINBOARDDIR)/reset.c
	endif
	ifeq ($(CONFIG_HAVE_ACPI_TABLES),y)
	ramstage-srcs += src/mainboard/$(MAINBOARDDIR)/acpi_tables.c
	$(eval $(call asl_template,dsdt))
	ifneq ($(wildcard src/mainboard/$(MAINBOARDDIR)/fadt.c),)
	ramstage-srcs += src/mainboard/$(MAINBOARDDIR)/fadt.c
	endif
	endif # CONFIG_GENERATE_ACPI_TABLES
	ifeq ($(CONFIG_HAVE_SMI_HANDLER),y)
	ifneq ($(wildcard src/mainboard/$(MAINBOARDDIR)/smihandler.c),)
	smm-srcs += src/mainboard/$(MAINBOARDDIR)/smihandler.c
	endif
	endif
	ifneq ($(wildcard src/mainboard/$(MAINBOARDDIR)/get_bus_conf.c),)
	ramstage-srcs += src/mainboard/$(MAINBOARDDIR)/get_bus_conf.c
	endif

	ramstage-libs ?=

	ifeq ($(CONFIG_RELOCATABLE_RAMSTAGE),y)

	# The rmodule_link defintion creates an elf file with .rmod extension.
	$(objcbfs)/ramstage.elf: $(objcbfs)/ramstage.debug.rmod
	cp $< $@

	endif

	$(objcbfs)/ramstage.debug: $(objgenerated)/ramstage.o $(call src-to-obj,ramstage,src/arch/x86/memlayout.ld)
	@printf " CC $(subst $(obj)/,,$(@))\n"
	$(LD_ramstage) $(CPPFLAGS) $(LDFLAGS_ramstage) -o $@ -L$(obj) $< -T $(call src-to-obj,ramstage,src/arch/x86/memlayout.ld)

	$(objgenerated)/ramstage.o: $$(ramstage-objs) $(COMPILER_RT_ramstage) $$(ramstage-libs)
	@printf " CC $(subst $(obj)/,,$(@))\n"
	ifeq ($(CONFIG_ARCH_ROMSTAGE_X86_32),y)
	$(LD_ramstage) -m elf_i386 -r -o $@ $(COMPILER_RT_FLAGS_ramstage) --whole-archive --start-group $(filter-out %.ld,$(ramstage-objs)) $(ramstage-libs) --no-whole-archive $(COMPILER_RT_ramstage) --end-group
	else
	$(LD_ramstage) -m elf_x86_64 -r -o $@ $(COMPILER_RT_FLAGS_ramstage) --whole-archive --start-group $(filter-out %.ld,$(ramstage-objs)) $(ramstage-libs) --no-whole-archive $(COMPILER_RT_ramstage) --end-group
	endif

	endif # CONFIG_ARCH_RAMSTAGE_X86_32 / CONFIG_ARCH_RAMSTAGE_X86_64