diff --git a/arch/sh/cpu/sh2/Makefile b/arch/sh/cpu/sh2/Makefile
index 686bb79..a19ed5e 100644
--- a/arch/sh/cpu/sh2/Makefile
+++ b/arch/sh/cpu/sh2/Makefile
@@ -8,27 +8,5 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(CPU).o
-
-START	= start.o
-COBJS	= cpu.o interrupts.o watchdog.o
-
-SRCS    := $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS    := $(addprefix $(obj),$(COBJS))
-SOBJS   := $(addprefix $(obj),$(SOBJS))
-
-all:    $(START) $(LIB)
-
-$(LIB):	$(OBJS) $(SOBJS)
-	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+extra-y	= start.o
+obj-y	= cpu.o interrupts.o watchdog.o
diff --git a/arch/sh/cpu/sh3/Makefile b/arch/sh/cpu/sh3/Makefile
index 26cb1ce..1dccaf9 100644
--- a/arch/sh/cpu/sh3/Makefile
+++ b/arch/sh/cpu/sh3/Makefile
@@ -11,27 +11,5 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(CPU).o
-
-START	= start.o
-COBJS	= cpu.o interrupts.o watchdog.o cache.o
-
-SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-all:    $(START) $(LIB)
-
-$(LIB):	$(OBJS) $(SOBJS)
-	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+extra-y	= start.o
+obj-y	= cpu.o interrupts.o watchdog.o cache.o
diff --git a/arch/sh/cpu/sh4/Makefile b/arch/sh/cpu/sh4/Makefile
index 5680d61..38c6188 100644
--- a/arch/sh/cpu/sh4/Makefile
+++ b/arch/sh/cpu/sh4/Makefile
@@ -8,27 +8,5 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(CPU).o
-
-START	= start.o
-COBJS	= cpu.o interrupts.o watchdog.o cache.o
-
-SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-all:    $(START) $(LIB)
-
-$(LIB):	$(OBJS) $(SOBJS)
-	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+extra-y	= start.o
+obj-y	= cpu.o interrupts.o watchdog.o cache.o
diff --git a/arch/sh/lib/Makefile b/arch/sh/lib/Makefile
index 8165963..5fc9d9d 100644
--- a/arch/sh/lib/Makefile
+++ b/arch/sh/lib/Makefile
@@ -5,57 +5,25 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-include $(TOPDIR)/config.mk
 
-LIB	= $(obj)lib$(ARCH).o
-LIBGCC	= $(obj)libgcc.o
-
-SOBJS-y	+=
-GLSOBJS	+= ashiftrt.o
-GLSOBJS	+= ashiftlt.o
-GLSOBJS	+= lshiftrt.o
-GLSOBJS	+= ashldi3.o
-GLSOBJS	+= ashrsi3.o
-GLSOBJS	+= lshrdi3.o
-GLSOBJS	+= movmem.o
-
-COBJS-y	+= board.o
-COBJS-$(CONFIG_CMD_BOOTM) += bootm.o
+obj-y	+= board.o
+obj-$(CONFIG_CMD_BOOTM) += bootm.o
 ifeq ($(CONFIG_SH2),y)
-COBJS-y	+= time_sh2.o
+obj-y	+= time_sh2.o
 else
-COBJS-y	+= time.o
+obj-y	+= time.o
 endif
-ifeq ($(CONFIG_CMD_SH_ZIMAGEBOOT),y)
-COBJS-y += zimageboot.o
-endif
+obj-$(CONFIG_CMD_SH_ZIMAGEBOOT) += zimageboot.o
 
-SRCS	:= $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
-OBJS	:= $(addprefix $(obj),$(SOBJS-y) $(COBJS-y))
-LGOBJS	:= $(addprefix $(obj),$(GLSOBJS)) \
-	   $(addprefix $(obj),$(GLCOBJS))
 
-# Always build libsh.o
-TARGETS	:= $(LIB)
 
 # Build private libgcc only when asked for
 ifdef USE_PRIVATE_LIBGCC
-TARGETS	+= $(LIBGCC)
+lib-y	+= ashiftrt.o
+lib-y	+= ashiftlt.o
+lib-y	+= lshiftrt.o
+lib-y	+= ashldi3.o
+lib-y	+= ashrsi3.o
+lib-y	+= lshrdi3.o
+lib-y	+= movmem.o
 endif
-
-all:	$(TARGETS)
-
-$(LIB):	$(obj).depend $(OBJS)
-	$(call cmd_link_o_target, $(OBJS))
-
-$(LIBGCC): $(obj).depend $(LGOBJS)
-	$(call cmd_link_o_target, $(LGOBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
diff --git a/board/alphaproject/ap_sh4a_4a/Makefile b/board/alphaproject/ap_sh4a_4a/Makefile
index a9ba175..486d0ac 100644
--- a/board/alphaproject/ap_sh4a_4a/Makefile
+++ b/board/alphaproject/ap_sh4a_4a/Makefile
@@ -3,25 +3,5 @@
 #
 # SPDX-License-Identifier:	GPL-2.0+
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(BOARD).o
-
-COBJS	:= ap_sh4a_4a.o
-SOBJS	:= lowlevel_init.o
-
-SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-$(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	:= ap_sh4a_4a.o
+obj-y	+= lowlevel_init.o
diff --git a/board/espt/Makefile b/board/espt/Makefile
index 107e544..8a8a2c9 100644
--- a/board/espt/Makefile
+++ b/board/espt/Makefile
@@ -7,25 +7,5 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(BOARD).o
-
-COBJS	:= espt.o
-SOBJS	:= lowlevel_init.o
-
-SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-$(LIB):	$(OBJS) $(SOBJS)
-	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+obj-y	:= espt.o
+obj-y	+= lowlevel_init.o
diff --git a/board/mpr2/Makefile b/board/mpr2/Makefile
index 7920b01..b6cdeb4 100644
--- a/board/mpr2/Makefile
+++ b/board/mpr2/Makefile
@@ -15,25 +15,5 @@
 #
 # SPDX-License-Identifier:	GPL-2.0+
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(BOARD).o
-
-COBJS	:= mpr2.o
-SOBJS	:= lowlevel_init.o
-
-SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-$(LIB):	$(OBJS) $(SOBJS)
-	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+obj-y	:= mpr2.o
+obj-y	+= lowlevel_init.o
diff --git a/board/ms7720se/Makefile b/board/ms7720se/Makefile
index 219649c..1819c4c 100644
--- a/board/ms7720se/Makefile
+++ b/board/ms7720se/Makefile
@@ -12,25 +12,5 @@
 #
 # SPDX-License-Identifier:	GPL-2.0+
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(BOARD).o
-
-COBJS	:= ms7720se.o
-SOBJS	:= lowlevel_init.o
-
-SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-$(LIB):	$(OBJS) $(SOBJS)
-	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+obj-y	:= ms7720se.o
+obj-y	+= lowlevel_init.o
diff --git a/board/ms7722se/Makefile b/board/ms7722se/Makefile
index e73ceb2..9f7af78 100644
--- a/board/ms7722se/Makefile
+++ b/board/ms7722se/Makefile
@@ -9,25 +9,5 @@
 #
 # SPDX-License-Identifier:	GPL-2.0+
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(BOARD).o
-
-COBJS	:= ms7722se.o
-SOBJS	:= lowlevel_init.o
-
-SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-$(LIB):	$(OBJS) $(SOBJS)
-	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+obj-y	:= ms7722se.o
+obj-y	+= lowlevel_init.o
diff --git a/board/ms7750se/Makefile b/board/ms7750se/Makefile
index 481c8bb..a8e3ca0 100644
--- a/board/ms7750se/Makefile
+++ b/board/ms7750se/Makefile
@@ -4,25 +4,6 @@
 #
 # SPDX-License-Identifier:	GPL-2.0+
 #
-include $(TOPDIR)/config.mk
 
-LIB	= $(obj)lib$(BOARD).o
-
-COBJS	:= ms7750se.o
-SOBJS	:= lowlevel_init.o
-
-SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-$(LIB):	$(OBJS) $(SOBJS)
-	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+obj-y	:= ms7750se.o
+obj-y	+= lowlevel_init.o
diff --git a/board/renesas/MigoR/Makefile b/board/renesas/MigoR/Makefile
index 7725c44..b4691a1 100644
--- a/board/renesas/MigoR/Makefile
+++ b/board/renesas/MigoR/Makefile
@@ -9,25 +9,5 @@
 #
 # SPDX-License-Identifier:	GPL-2.0+
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(BOARD).o
-
-COBJS	:= migo_r.o
-SOBJS	:= lowlevel_init.o
-
-SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-$(LIB):	$(OBJS) $(SOBJS)
-	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+obj-y	:= migo_r.o
+obj-y	+= lowlevel_init.o
diff --git a/board/renesas/ap325rxa/Makefile b/board/renesas/ap325rxa/Makefile
index 0597d0f..ff72de9 100644
--- a/board/renesas/ap325rxa/Makefile
+++ b/board/renesas/ap325rxa/Makefile
@@ -8,25 +8,5 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(BOARD).o
-
-COBJS	:= ap325rxa.o cpld-ap325rxa.o
-SOBJS	:= lowlevel_init.o
-
-SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-$(LIB):	$(OBJS) $(SOBJS)
-	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+obj-y	:= ap325rxa.o cpld-ap325rxa.o
+obj-y	+= lowlevel_init.o
diff --git a/board/renesas/ecovec/Makefile b/board/renesas/ecovec/Makefile
index f2a02f8..943fa47 100644
--- a/board/renesas/ecovec/Makefile
+++ b/board/renesas/ecovec/Makefile
@@ -4,26 +4,5 @@
 #
 # SPDX-License-Identifier:	GPL-2.0+
 
-
-include $(TOPDIR)/config.mk
-
-LIB = $(obj)lib$(BOARD).o
-
-COBJS   := ecovec.o
-SOBJS   := lowlevel_init.o
-
-SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-$(LIB): $(OBJS) $(SOBJS)
-		$(call cmd_link_o_target, $(OBJS) $(SOBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+obj-y := ecovec.o
+obj-y += lowlevel_init.o
diff --git a/board/renesas/r0p7734/Makefile b/board/renesas/r0p7734/Makefile
index 24933cc..1f24d92 100644
--- a/board/renesas/r0p7734/Makefile
+++ b/board/renesas/r0p7734/Makefile
@@ -3,25 +3,5 @@
 #
 # SPDX-License-Identifier:	GPL-2.0+
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(BOARD).o
-
-COBJS	:= r0p7734.o
-SOBJS	:= lowlevel_init.o
-
-SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-$(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	:= r0p7734.o
+obj-y	+= lowlevel_init.o
diff --git a/board/renesas/r2dplus/Makefile b/board/renesas/r2dplus/Makefile
index f0023ab..acffb6d 100644
--- a/board/renesas/r2dplus/Makefile
+++ b/board/renesas/r2dplus/Makefile
@@ -4,25 +4,6 @@
 #
 # SPDX-License-Identifier:	GPL-2.0+
 #
-include $(TOPDIR)/config.mk
 
-LIB	= $(obj)lib$(BOARD).o
-
-COBJS	:= r2dplus.o
-SOBJS	:= lowlevel_init.o
-
-SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-$(LIB):	$(OBJS) $(SOBJS)
-	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+obj-y	:= r2dplus.o
+obj-y	+= lowlevel_init.o
diff --git a/board/renesas/r7780mp/Makefile b/board/renesas/r7780mp/Makefile
index c95ac12..8dab435 100644
--- a/board/renesas/r7780mp/Makefile
+++ b/board/renesas/r7780mp/Makefile
@@ -5,25 +5,5 @@
 #
 # SPDX-License-Identifier:	GPL-2.0+
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(BOARD).o
-
-COBJS	:= r7780mp.o
-SOBJS	:= lowlevel_init.o
-
-SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-$(LIB):	$(OBJS) $(SOBJS)
-	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+obj-y	:= r7780mp.o
+obj-y	+= lowlevel_init.o
diff --git a/board/renesas/rsk7203/Makefile b/board/renesas/rsk7203/Makefile
index 13ffa4f..16acfaf 100644
--- a/board/renesas/rsk7203/Makefile
+++ b/board/renesas/rsk7203/Makefile
@@ -6,25 +6,5 @@
 #
 # SPDX-License-Identifier:	GPL-2.0+
 
-include $(TOPDIR)/config.mk
-
-LIB	= lib$(BOARD).o
-
-OBJS	:= rsk7203.o
-SOBJS	:= lowlevel_init.o
-
-LIB	:= $(addprefix $(obj),$(LIB))
-OBJS	:= $(addprefix $(obj),$(OBJS))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-$(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	:= rsk7203.o
+obj-y	+= lowlevel_init.o
diff --git a/board/renesas/rsk7264/Makefile b/board/renesas/rsk7264/Makefile
index 476de43..7ada697 100644
--- a/board/renesas/rsk7264/Makefile
+++ b/board/renesas/rsk7264/Makefile
@@ -3,23 +3,5 @@
 #
 # SPDX-License-Identifier:	GPL-2.0+
 
-include $(TOPDIR)/config.mk
-
-LIB	= lib$(BOARD).o
-
-OBJS	:= rsk7264.o
-SOBJS	:= lowlevel_init.o
-
-LIB	:= $(addprefix $(obj),$(LIB))
-OBJS	:= $(addprefix $(obj),$(OBJS))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-$(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	:= rsk7264.o
+obj-y	+= lowlevel_init.o
diff --git a/board/renesas/rsk7269/Makefile b/board/renesas/rsk7269/Makefile
index 1a01557..0f053d8 100644
--- a/board/renesas/rsk7269/Makefile
+++ b/board/renesas/rsk7269/Makefile
@@ -4,23 +4,5 @@
 #
 # SPDX-License-Identifier:	GPL-2.0+
 
-include $(TOPDIR)/config.mk
-
-LIB	= lib$(BOARD).o
-
-OBJS	:= rsk7269.o
-SOBJS	:= lowlevel_init.o
-
-LIB	:= $(addprefix $(obj),$(LIB))
-OBJS	:= $(addprefix $(obj),$(OBJS))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-$(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	:= rsk7269.o
+obj-y	+= lowlevel_init.o
diff --git a/board/renesas/sh7752evb/Makefile b/board/renesas/sh7752evb/Makefile
index 70009ec..856af81 100644
--- a/board/renesas/sh7752evb/Makefile
+++ b/board/renesas/sh7752evb/Makefile
@@ -3,21 +3,5 @@
 #
 # SPDX-License-Identifier:	GPL-2.0+
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(BOARD).o
-
-COBJS	:= sh7752evb.o spi-boot.o
-SOBJS	:= lowlevel_init.o
-
-$(LIB):	$(obj).depend $(COBJS) $(SOBJS)
-	$(call cmd_link_o_target, $(COBJS) $(SOBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+obj-y	:= sh7752evb.o spi-boot.o
+obj-y	+= lowlevel_init.o
diff --git a/board/renesas/sh7757lcr/Makefile b/board/renesas/sh7757lcr/Makefile
index 4bb6068..1fa3992 100644
--- a/board/renesas/sh7757lcr/Makefile
+++ b/board/renesas/sh7757lcr/Makefile
@@ -3,21 +3,5 @@
 #
 # SPDX-License-Identifier:	GPL-2.0+
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(BOARD).o
-
-COBJS	:= sh7757lcr.o spi-boot.o
-SOBJS	:= lowlevel_init.o
-
-$(LIB):	$(obj).depend $(COBJS) $(SOBJS)
-	$(call cmd_link_o_target, $(COBJS) $(SOBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+obj-y	:= sh7757lcr.o spi-boot.o
+obj-y	+= lowlevel_init.o
diff --git a/board/renesas/sh7763rdp/Makefile b/board/renesas/sh7763rdp/Makefile
index b311bcd..cbf38bb 100644
--- a/board/renesas/sh7763rdp/Makefile
+++ b/board/renesas/sh7763rdp/Makefile
@@ -8,25 +8,5 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(BOARD).o
-
-COBJS	:= sh7763rdp.o
-SOBJS	:= lowlevel_init.o
-
-SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-$(LIB):	$(OBJS) $(SOBJS)
-	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+obj-y	:= sh7763rdp.o
+obj-y	+= lowlevel_init.o
diff --git a/board/renesas/sh7785lcr/Makefile b/board/renesas/sh7785lcr/Makefile
index e577d56..e8cfb05 100644
--- a/board/renesas/sh7785lcr/Makefile
+++ b/board/renesas/sh7785lcr/Makefile
@@ -3,25 +3,5 @@
 #
 # SPDX-License-Identifier:	GPL-2.0+
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(BOARD).o
-
-COBJS	:= sh7785lcr.o selfcheck.o rtl8169_mac.o
-SOBJS	:= lowlevel_init.o
-
-SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-$(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	:= sh7785lcr.o selfcheck.o rtl8169_mac.o
+obj-y	+= lowlevel_init.o
diff --git a/board/shmin/Makefile b/board/shmin/Makefile
index 0377723..daf36de 100644
--- a/board/shmin/Makefile
+++ b/board/shmin/Makefile
@@ -6,25 +6,5 @@
 #
 # SPDX-License-Identifier:	GPL-2.0+
 
-include $(TOPDIR)/config.mk
-
-LIB	= lib$(BOARD).o
-
-OBJS	:= shmin.o
-SOBJS	:= lowlevel_init.o
-
-LIB	:= $(addprefix $(obj),$(LIB))
-OBJS	:= $(addprefix $(obj),$(OBJS))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-$(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	:= shmin.o
+obj-y	+= lowlevel_init.o