diff --git a/arch/sh/cpu/sh2/Makefile b/arch/sh/cpu/sh2/Makefile
index 686bb7910aa35e044f7b9e2311bb2c3aa20224b9..a19ed5ecf59a56c1ce93de3d5ce2944cb64e9a6e 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 26cb1ced5eb4734b374afe86d01b89dabbdc59b7..1dccaf95203d1e305cfc923d62859068beb2e900 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 5680d6115dd0684abd5ca0d1d74dd271a163567c..38c6188c383254d993cf5b299cf65b3395b1b528 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 8165963ee8dec37ae469f5ec82807ee90c224a82..5fc9d9d66d46e9e5c6bdf616b6a5ed41f93a2d4d 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
-endif
-ifeq ($(CONFIG_CMD_SH_ZIMAGEBOOT),y)
-COBJS-y += zimageboot.o
+obj-y	+= time.o
 endif
+obj-$(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 a9ba17568e46d32bc0fd850a10405b764b627d1f..486d0ac5507a0ffbbda038339e5a7c1a4957ecff 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 107e544774912c17341ebbdcf3743138112e1d99..8a8a2c992be032eab06c257c743164dd6b5e59b5 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 7920b01b49ec46b1a9c969b21ba1194606949a9a..b6cdeb4efa7fc890f07fa1fcb6c468b30535fbac 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 219649cd6b7163ad96eda27eed85f41a3c127f06..1819c4c10d3394f294a8ea9a2d4cfdedb8dab49b 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 e73ceb284f19d68abd7e738e45ecda459e92cc80..9f7af787380a050f4e1184495f9629fa3421639f 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 481c8bb95420c01ec26ec04aadfa91f2d72359b4..a8e3ca0acf24be1c7b469339077f7fbf358a1fd6 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 7725c449cd2de70020145846b89812f6fc4010bf..b4691a116554dc5df38321198a3b712db314874c 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 0597d0fc5e97dfeba18d32e3849a2492dbb4ed4a..ff72de902c45779d5a30a26c405e193e37a1e683 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 f2a02f81b599a97c36b8d11ad87b457ce3f51bfc..943fa4760dd10ddf21076d930e894dbc1a7da2c6 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 24933cc491097b74256cfb82e74c876df54c3e2f..1f24d9296200ce221a581563d3d56a329044b8cf 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 f0023abe860ada51ff544e9054154976aa3fa6bf..acffb6d3196036ecd27bd8dbcd43b1a9d37e7b0c 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 c95ac12f4dd79ca97d42d814a1aa51812e6390c7..8dab4358cd6e320a72599deafad724f35e44c293 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 13ffa4f8b5ecd907e4d4677e79217434c213de16..16acfaf40a369e326455e9134d1ebfff452b24a7 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 476de43069db598902bdc47b2e980a09710afdca..7ada697c888dab4a2afe8be635c19b7ae2e2e20f 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 1a015573d1c7af7215714e84e63e2ba86f2140bf..0f053d8fa65e69df35141afa9adcb74c18e5667e 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 70009ec8fd1e76df82b6fbec3338336ea941157c..856af8138574a771bb14a8c780a818b40dd181d4 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 4bb6068a9d6a2d7403adbf846938202390c2e282..1fa3992e1da32ad2541d69e154e7f7118478165d 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 b311bcd032e125c9dca202ad21502d5414571cab..cbf38bbc18f9c1d8bca26493f8bdbf854edd769b 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 e577d566a9f457740c0d5364250e5ac124a05d23..e8cfb053ce43f18bfa0db8c461d47f17327feb39 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 0377723f236b907d5a54742e5ca8a764bb4ed076..daf36deed05e867db026d24848cbefb17c706e49 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