[U-Boot,11/18] x86: convert makefiles to Kbuild style

diff --git a/arch/x86/config.mk b/arch/x86/config.mk
index b22959f..4a4ad80 100644
--- a/arch/x86/config.mk
+++ b/arch/x86/config.mk
@@ -31,7 +31,7 @@  LDFLAGS_FINAL += --gc-sections -pie
 LDFLAGS_FINAL += --wrap=__divdi3 --wrap=__udivdi3
 LDFLAGS_FINAL += --wrap=__moddi3 --wrap=__umoddi3
 
-NORMAL_LIBGCC = $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
+export NORMAL_LIBGCC = $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
 PREFIXED_LIBGCC = $(OBJTREE)/arch/$(ARCH)/lib/$(shell basename $(NORMAL_LIBGCC))
 
 export USE_PRIVATE_LIBGCC=$(shell dirname $(PREFIXED_LIBGCC))
diff --git a/arch/x86/cpu/Makefile b/arch/x86/cpu/Makefile
index 41555ab..415bc24 100644
--- a/arch/x86/cpu/Makefile
+++ b/arch/x86/cpu/Makefile
@@ -8,28 +8,6 @@ 
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(CPU).o
-
-START-y	= start.o
-START-$(CONFIG_X86_RESET_VECTOR) += resetvec.o start16.o
-COBJS	= interrupts.o cpu.o
-
-SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
-START	:= $(addprefix $(obj),$(START-y))
-
-all:	$(obj).depend $(START) $(LIB)
-
-$(LIB):	$(OBJS)
-	$(call cmd_link_o_target, $(OBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+extra-y	= start.o
+extra-$(CONFIG_X86_RESET_VECTOR) += resetvec.o start16.o
+obj-y	= interrupts.o cpu.o
diff --git a/arch/x86/cpu/coreboot/Makefile b/arch/x86/cpu/coreboot/Makefile
index 18fa115..cd0bf4e 100644
--- a/arch/x86/cpu/coreboot/Makefile
+++ b/arch/x86/cpu/coreboot/Makefile
@@ -13,31 +13,10 @@ 
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-include $(TOPDIR)/config.mk
-
-LIB	:= $(obj)lib$(SOC).o
-
-SOBJS-$(CONFIG_SYS_COREBOOT) += car.o
-COBJS-$(CONFIG_SYS_COREBOOT) += coreboot.o
-COBJS-$(CONFIG_SYS_COREBOOT) += tables.o
-COBJS-$(CONFIG_SYS_COREBOOT) += ipchecksum.o
-COBJS-$(CONFIG_SYS_COREBOOT) += sdram.o
-COBJS-$(CONFIG_SYS_COREBOOT) += timestamp.o
-COBJS-$(CONFIG_PCI) += pci.o
-
-SRCS	:= $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
-OBJS	:= $(addprefix $(obj),$(SOBJS-y) $(COBJS-y))
-
-all: $(obj).depend $(LIB)
-
-$(LIB):	$(OBJS)
-	$(call cmd_link_o_target, $(OBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+obj-$(CONFIG_SYS_COREBOOT) += car.o
+obj-$(CONFIG_SYS_COREBOOT) += coreboot.o
+obj-$(CONFIG_SYS_COREBOOT) += tables.o
+obj-$(CONFIG_SYS_COREBOOT) += ipchecksum.o
+obj-$(CONFIG_SYS_COREBOOT) += sdram.o
+obj-$(CONFIG_SYS_COREBOOT) += timestamp.o
+obj-$(CONFIG_PCI) += pci.o
diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index f389767..638f790 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -5,41 +5,23 @@ 
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(ARCH).o
-
-COBJS-$(CONFIG_CMD_BOOTM) += bootm.o
-COBJS-y	+= cmd_boot.o
-COBJS-y	+= gcc.o
-COBJS-y	+= init_helpers.o
-COBJS-y	+= interrupts.o
-COBJS-$(CONFIG_SYS_PCAT_INTERRUPTS) += pcat_interrupts.o
-COBJS-$(CONFIG_SYS_PCAT_TIMER) += pcat_timer.o
-COBJS-$(CONFIG_PCI) += pci_type1.o
-COBJS-y	+= relocate.o
-COBJS-y += physmem.o
-COBJS-y	+= string.o
-COBJS-$(CONFIG_SYS_X86_TSC_TIMER)	+= tsc_timer.o
-COBJS-$(CONFIG_VIDEO_VGA)	+= video.o
-COBJS-$(CONFIG_CMD_ZBOOT)	+= zimage.o
-
-SRCS	:= $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
-OBJS	:= $(addprefix $(obj),$(SOBJS-y) $(COBJS-y))
-
-$(LIB):	$(obj).depend $(OBJS)
-	$(call cmd_link_o_target, $(OBJS))
-
-$(PREFIXED_LIBGCC): $(NORMAL_LIBGCC)
+obj-$(CONFIG_CMD_BOOTM) += bootm.o
+obj-y	+= cmd_boot.o
+obj-y	+= gcc.o
+obj-y	+= init_helpers.o
+obj-y	+= interrupts.o
+obj-$(CONFIG_SYS_PCAT_INTERRUPTS) += pcat_interrupts.o
+obj-$(CONFIG_SYS_PCAT_TIMER) += pcat_timer.o
+obj-$(CONFIG_PCI) += pci_type1.o
+obj-y	+= relocate.o
+obj-y += physmem.o
+obj-y	+= string.o
+obj-$(CONFIG_SYS_X86_TSC_TIMER)	+= tsc_timer.o
+obj-$(CONFIG_VIDEO_VGA)	+= video.o
+obj-$(CONFIG_CMD_ZBOOT)	+= zimage.o
+
+LIBGCC := $(notdir $(NORMAL_LIBGCC))
+extra-y := $(LIBGCC)
+
+$(obj)$(LIBGCC): $(NORMAL_LIBGCC)
 	$(OBJCOPY) $< $@ --prefix-symbols=__normal_
-
-$(LIB): $(PREFIXED_LIBGCC)
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
diff --git a/board/chromebook-x86/coreboot/Makefile b/board/chromebook-x86/coreboot/Makefile
index e2222ab..4f2ac89 100644
--- a/board/chromebook-x86/coreboot/Makefile
+++ b/board/chromebook-x86/coreboot/Makefile
@@ -12,23 +12,4 @@ 
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(BOARD).o
-
-SOBJS-y	+= coreboot_start.o
-
-SRCS	:= $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
-OBJS	:= $(addprefix $(obj),$(SOBJS-y) $(COBJS-y))
-
-$(LIB):	$(obj).depend $(OBJS) $(SOBJS)
-	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+obj-y	+= coreboot_start.o