diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 4bf9afc384..ff8f5b5ce8 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -1,77 +1,129 @@
 menu "SuperH architecture"
 	depends on SH
 
-config SYS_ARCH
-	default "sh"
+config CPU_SH2
+	bool
+
+config CPU_SH2A
+	bool
+	select CPU_SH2
+
+config CPU_SH3
+	bool
+
+config CPU_SH4
+	bool
+
+config CPU_SH4A
+	bool
+	select CPU_SH4
+
+config SH_32BIT
+	bool "32bit mode"
+	depends on CPU_SH4A
+	default n
+	help
+	  SH4A has 2 physical memory maps. This use 32bit mode.
+	  And this is board specific. Please check your board if you
+	  want to use this.
 
 choice
 	prompt "Target select"
 
 config TARGET_RSK7203
-	bool "Support rsk7203"
+	bool "RSK+ 7203"
+	select CPU_SH2A
 
 config TARGET_RSK7264
-	bool "Support rsk7264"
+	bool "RSK2+SH7264"
+	select CPU_SH2A
 
 config TARGET_RSK7269
-	bool "Support rsk7269"
+	bool "RSK2+SH7269"
+	select CPU_SH2A
 
 config TARGET_MPR2
-	bool "Support mpr2"
+	bool "Magic Panel Release 2 board"
+	select CPU_SH3
 
 config TARGET_MS7720SE
 	bool "Support ms7720se"
+	select CPU_SH3
 
 config TARGET_SHMIN
-	bool "Support shmin"
+	bool "SHMIN"
+	select CPU_SH3
 
 config TARGET_ESPT
-	bool "Support espt"
+	bool "Data Technology ESPT-GIGA board"
+	select CPU_SH4
 
 config TARGET_MS7722SE
-	bool "Support ms7722se"
+	bool "SolutionEngine 7722"
+	select CPU_SH4
 
 config TARGET_MS7750SE
-	bool "Support ms7750se"
+	bool "SolutionEngine 7750"
+	select CPU_SH4
 
 config TARGET_AP_SH4A_4A
-	bool "Support ap_sh4a_4a"
+	bool "ALPHAPROJECT AP-SH4A-4A"
+	select CPU_SH4A
 
 config TARGET_AP325RXA
-	bool "Support ap325rxa"
+	bool "Renesas AP-325RXA"
+	select CPU_SH4
 
 config TARGET_ECOVEC
-	bool "Support ecovec"
+	bool "EcoVec"
+	select CPU_SH4A
 
 config TARGET_MIGOR
-	bool "Support MigoR"
+	bool "Migo-R"
+	select CPU_SH4
 
 config TARGET_R0P7734
 	bool "Support r0p7734"
+	select CPU_SH4A
 
 config TARGET_R2DPLUS
-	bool "Support r2dplus"
+	bool "Renesas R2D-PLUS"
+	select CPU_SH4
 
 config TARGET_R7780MP
-	bool "Support r7780mp"
+	bool "R7780MP board"
+	select CPU_SH4A
 
 config TARGET_SH7752EVB
-	bool "Support sh7752evb"
+	bool "SH7752EVB"
+	select CPU_SH4A
 
 config TARGET_SH7753EVB
-	bool "Support sh7753evb"
+	bool "SH7753EVB"
+	select CPU_SH4
 
 config TARGET_SH7757LCR
-	bool "Support sh7757lcr"
+	bool "SH7757LCR"
+	select CPU_SH4A
 
 config TARGET_SH7763RDP
-	bool "Support sh7763rdp"
+	bool "SH7763RDP"
+	select CPU_SH4
 
 config TARGET_SH7785LCR
-	bool "Support sh7785lcr"
+	bool "SH7785LCR"
+	select CPU_SH4A
 
 endchoice
 
+config SYS_ARCH
+	default "sh"
+
+config SYS_CPU
+	default "sh2" if CPU_SH2
+	default "sh3" if CPU_SH3
+	default "sh4" if CPU_SH4
+
 source "board/alphaproject/ap_sh4a_4a/Kconfig"
 source "board/espt/Kconfig"
 source "board/mpr2/Kconfig"
diff --git a/arch/sh/cpu/sh2/config.mk b/arch/sh/cpu/sh2/config.mk
index 4904d76d44..12e202d539 100644
--- a/arch/sh/cpu/sh2/config.mk
+++ b/arch/sh/cpu/sh2/config.mk
@@ -7,11 +7,11 @@
 #
 ENDIANNESS += -EB
 
-ifdef CONFIG_SH2A
+ifdef CONFIG_CPU_SH2A
 PLATFORM_CPPFLAGS += -m2a -m2a-nofpu -mb
 else # SH2
 PLATFORM_CPPFLAGS += -m3e -mb
 endif
-PLATFORM_CPPFLAGS += -DCONFIG_SH2 $(call cc-option,-mno-fdpic)
+PLATFORM_CPPFLAGS += $(call cc-option,-mno-fdpic)
 
 PLATFORM_LDFLAGS += $(ENDIANNESS)
diff --git a/arch/sh/cpu/sh3/config.mk b/arch/sh/cpu/sh3/config.mk
index 24b5c47859..dcafd19e58 100644
--- a/arch/sh/cpu/sh3/config.mk
+++ b/arch/sh/cpu/sh3/config.mk
@@ -11,4 +11,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 #
-PLATFORM_CPPFLAGS += -DCONFIG_SH3 -m3
+PLATFORM_CPPFLAGS += -m3
diff --git a/arch/sh/cpu/sh4/config.mk b/arch/sh/cpu/sh4/config.mk
index 5773d4fec9..4fb2dc23aa 100644
--- a/arch/sh/cpu/sh4/config.mk
+++ b/arch/sh/cpu/sh4/config.mk
@@ -8,4 +8,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 #
-PLATFORM_CPPFLAGS += -DCONFIG_SH4 -m4-nofpu
+PLATFORM_CPPFLAGS += -m4-nofpu
diff --git a/arch/sh/include/asm/cache.h b/arch/sh/include/asm/cache.h
index 0698a37759..abaf4050c3 100644
--- a/arch/sh/include/asm/cache.h
+++ b/arch/sh/include/asm/cache.h
@@ -1,7 +1,7 @@
 #ifndef __ASM_SH_CACHE_H
 #define __ASM_SH_CACHE_H
 
-#if defined(CONFIG_SH4)
+#if defined(CONFIG_CPU_SH4)
 
 int cache_control(unsigned int cmd);
 
@@ -18,7 +18,7 @@ struct __large_struct { unsigned long buf[100]; };
  */
 #define ARCH_DMA_MINALIGN	32
 
-#endif /* CONFIG_SH4 */
+#endif /* CONFIG_CPU_SH4 */
 
 /*
  * Use the L1 data cache line size value for the minimum DMA buffer alignment
diff --git a/arch/sh/include/asm/processor.h b/arch/sh/include/asm/processor.h
index b8677da959..b07fe542e3 100644
--- a/arch/sh/include/asm/processor.h
+++ b/arch/sh/include/asm/processor.h
@@ -1,10 +1,10 @@
 #ifndef _ASM_SH_PROCESSOR_H_
 #define _ASM_SH_PROCESSOR_H_
-#if defined(CONFIG_SH2)
+#if defined(CONFIG_CPU_SH2)
 # include <asm/cpu_sh2.h>
-#elif defined(CONFIG_SH3)
+#elif defined(CONFIG_CPU_SH3)
 # include <asm/cpu_sh3.h>
-#elif defined(CONFIG_SH4)
+#elif defined(CONFIG_CPU_SH4)
 # include <asm/cpu_sh4.h>
 #endif
 #endif
diff --git a/arch/sh/lib/Makefile b/arch/sh/lib/Makefile
index 8a84b24af1..1304f4ee93 100644
--- a/arch/sh/lib/Makefile
+++ b/arch/sh/lib/Makefile
@@ -8,7 +8,7 @@
 
 obj-y	+= board.o
 obj-$(CONFIG_CMD_BOOTM) += bootm.o
-ifeq ($(CONFIG_SH2),y)
+ifeq ($(CONFIG_CPU_SH2),y)
 obj-y	+= time_sh2.o
 else
 obj-y	+= time.o
diff --git a/board/alphaproject/ap_sh4a_4a/Kconfig b/board/alphaproject/ap_sh4a_4a/Kconfig
index 2352e66806..4692851b26 100644
--- a/board/alphaproject/ap_sh4a_4a/Kconfig
+++ b/board/alphaproject/ap_sh4a_4a/Kconfig
@@ -1,8 +1,5 @@
 if TARGET_AP_SH4A_4A
 
-config SYS_CPU
-	default "sh4"
-
 config SYS_BOARD
 	default "ap_sh4a_4a"
 
diff --git a/board/espt/Kconfig b/board/espt/Kconfig
index 6c7cd24155..0294926cf5 100644
--- a/board/espt/Kconfig
+++ b/board/espt/Kconfig
@@ -1,8 +1,5 @@
 if TARGET_ESPT
 
-config SYS_CPU
-	default "sh4"
-
 config SYS_BOARD
 	default "espt"
 
diff --git a/board/mpr2/Kconfig b/board/mpr2/Kconfig
index 79a60c2f2d..54176e8f6f 100644
--- a/board/mpr2/Kconfig
+++ b/board/mpr2/Kconfig
@@ -1,8 +1,5 @@
 if TARGET_MPR2
 
-config SYS_CPU
-	default "sh3"
-
 config SYS_BOARD
 	default "mpr2"
 
diff --git a/board/ms7720se/Kconfig b/board/ms7720se/Kconfig
index d935affdd9..83313279b3 100644
--- a/board/ms7720se/Kconfig
+++ b/board/ms7720se/Kconfig
@@ -1,8 +1,5 @@
 if TARGET_MS7720SE
 
-config SYS_CPU
-	default "sh3"
-
 config SYS_BOARD
 	default "ms7720se"
 
diff --git a/board/ms7722se/Kconfig b/board/ms7722se/Kconfig
index 17073e81e9..39027c9864 100644
--- a/board/ms7722se/Kconfig
+++ b/board/ms7722se/Kconfig
@@ -1,8 +1,5 @@
 if TARGET_MS7722SE
 
-config SYS_CPU
-	default "sh4"
-
 config SYS_BOARD
 	default "ms7722se"
 
diff --git a/board/ms7750se/Kconfig b/board/ms7750se/Kconfig
index 07aa0247b7..2c0b88c775 100644
--- a/board/ms7750se/Kconfig
+++ b/board/ms7750se/Kconfig
@@ -1,8 +1,5 @@
 if TARGET_MS7750SE
 
-config SYS_CPU
-	default "sh4"
-
 config SYS_BOARD
 	default "ms7750se"
 
diff --git a/board/renesas/MigoR/Kconfig b/board/renesas/MigoR/Kconfig
index 10dffeda9f..25b170ac07 100644
--- a/board/renesas/MigoR/Kconfig
+++ b/board/renesas/MigoR/Kconfig
@@ -1,8 +1,5 @@
 if TARGET_MIGOR
 
-config SYS_CPU
-	default "sh4"
-
 config SYS_BOARD
 	default "MigoR"
 
diff --git a/board/renesas/ap325rxa/Kconfig b/board/renesas/ap325rxa/Kconfig
index 45bd6003bd..c8f2de2959 100644
--- a/board/renesas/ap325rxa/Kconfig
+++ b/board/renesas/ap325rxa/Kconfig
@@ -1,8 +1,5 @@
 if TARGET_AP325RXA
 
-config SYS_CPU
-	default "sh4"
-
 config SYS_BOARD
 	default "ap325rxa"
 
diff --git a/board/renesas/ecovec/Kconfig b/board/renesas/ecovec/Kconfig
index a24fe911e0..08cde83356 100644
--- a/board/renesas/ecovec/Kconfig
+++ b/board/renesas/ecovec/Kconfig
@@ -1,8 +1,5 @@
 if TARGET_ECOVEC
 
-config SYS_CPU
-	default "sh4"
-
 config SYS_BOARD
 	default "ecovec"
 
diff --git a/board/renesas/ecovec/ecovec.c b/board/renesas/ecovec/ecovec.c
index 2804d9133d..d862d997e5 100644
--- a/board/renesas/ecovec/ecovec.c
+++ b/board/renesas/ecovec/ecovec.c
@@ -41,7 +41,7 @@ static void debug_led(u8 led)
 int board_late_init(void)
 {
 	u8 mac[6];
-	char env_mac[17];
+	char env_mac[18];
 
 	udelay(1000);
 
diff --git a/board/renesas/r0p7734/Kconfig b/board/renesas/r0p7734/Kconfig
index bda785dc97..7f24f41b8f 100644
--- a/board/renesas/r0p7734/Kconfig
+++ b/board/renesas/r0p7734/Kconfig
@@ -1,8 +1,5 @@
 if TARGET_R0P7734
 
-config SYS_CPU
-	default "sh4"
-
 config SYS_BOARD
 	default "r0p7734"
 
diff --git a/board/renesas/r2dplus/Kconfig b/board/renesas/r2dplus/Kconfig
index c55c109f6b..6597870a86 100644
--- a/board/renesas/r2dplus/Kconfig
+++ b/board/renesas/r2dplus/Kconfig
@@ -1,8 +1,5 @@
 if TARGET_R2DPLUS
 
-config SYS_CPU
-	default "sh4"
-
 config SYS_BOARD
 	default "r2dplus"
 
diff --git a/board/renesas/r7780mp/Kconfig b/board/renesas/r7780mp/Kconfig
index 2d3cbeca5b..050cc4cc0f 100644
--- a/board/renesas/r7780mp/Kconfig
+++ b/board/renesas/r7780mp/Kconfig
@@ -1,8 +1,5 @@
 if TARGET_R7780MP
 
-config SYS_CPU
-	default "sh4"
-
 config SYS_BOARD
 	default "r7780mp"
 
diff --git a/board/renesas/rsk7203/Kconfig b/board/renesas/rsk7203/Kconfig
index 5eb2923fb9..10b8786411 100644
--- a/board/renesas/rsk7203/Kconfig
+++ b/board/renesas/rsk7203/Kconfig
@@ -1,8 +1,5 @@
 if TARGET_RSK7203
 
-config SYS_CPU
-	default "sh2"
-
 config SYS_BOARD
 	default "rsk7203"
 
diff --git a/board/renesas/rsk7264/Kconfig b/board/renesas/rsk7264/Kconfig
index af71295a25..755d2896fb 100644
--- a/board/renesas/rsk7264/Kconfig
+++ b/board/renesas/rsk7264/Kconfig
@@ -1,8 +1,5 @@
 if TARGET_RSK7264
 
-config SYS_CPU
-	default "sh2"
-
 config SYS_BOARD
 	default "rsk7264"
 
diff --git a/board/renesas/rsk7269/Kconfig b/board/renesas/rsk7269/Kconfig
index cc0092c2fb..ab5cd0e38f 100644
--- a/board/renesas/rsk7269/Kconfig
+++ b/board/renesas/rsk7269/Kconfig
@@ -1,8 +1,5 @@
 if TARGET_RSK7269
 
-config SYS_CPU
-	default "sh2"
-
 config SYS_BOARD
 	default "rsk7269"
 
diff --git a/board/renesas/sh7752evb/Kconfig b/board/renesas/sh7752evb/Kconfig
index 7c6aae94bf..7f40888336 100644
--- a/board/renesas/sh7752evb/Kconfig
+++ b/board/renesas/sh7752evb/Kconfig
@@ -1,8 +1,5 @@
 if TARGET_SH7752EVB
 
-config SYS_CPU
-	default "sh4"
-
 config SYS_BOARD
 	default "sh7752evb"
 
diff --git a/board/renesas/sh7753evb/Kconfig b/board/renesas/sh7753evb/Kconfig
index 8abdea0b13..be889248a8 100644
--- a/board/renesas/sh7753evb/Kconfig
+++ b/board/renesas/sh7753evb/Kconfig
@@ -1,8 +1,5 @@
 if TARGET_SH7753EVB
 
-config SYS_CPU
-	default "sh4"
-
 config SYS_BOARD
 	default "sh7753evb"
 
diff --git a/board/renesas/sh7757lcr/Kconfig b/board/renesas/sh7757lcr/Kconfig
index 97d966feb2..3fba80ddca 100644
--- a/board/renesas/sh7757lcr/Kconfig
+++ b/board/renesas/sh7757lcr/Kconfig
@@ -1,8 +1,5 @@
 if TARGET_SH7757LCR
 
-config SYS_CPU
-	default "sh4"
-
 config SYS_BOARD
 	default "sh7757lcr"
 
diff --git a/board/renesas/sh7763rdp/Kconfig b/board/renesas/sh7763rdp/Kconfig
index d512988138..101d2b5a32 100644
--- a/board/renesas/sh7763rdp/Kconfig
+++ b/board/renesas/sh7763rdp/Kconfig
@@ -1,8 +1,5 @@
 if TARGET_SH7763RDP
 
-config SYS_CPU
-	default "sh4"
-
 config SYS_BOARD
 	default "sh7763rdp"
 
diff --git a/board/renesas/sh7785lcr/Kconfig b/board/renesas/sh7785lcr/Kconfig
index 15787e645e..e204c76ef5 100644
--- a/board/renesas/sh7785lcr/Kconfig
+++ b/board/renesas/sh7785lcr/Kconfig
@@ -1,8 +1,5 @@
 if TARGET_SH7785LCR
 
-config SYS_CPU
-	default "sh4"
-
 config SYS_BOARD
 	default "sh7785lcr"
 
diff --git a/board/shmin/Kconfig b/board/shmin/Kconfig
index a1c383e1b2..467580c67b 100644
--- a/board/shmin/Kconfig
+++ b/board/shmin/Kconfig
@@ -1,8 +1,5 @@
 if TARGET_SHMIN
 
-config SYS_CPU
-	default "sh3"
-
 config SYS_BOARD
 	default "shmin"
 
diff --git a/configs/sh7752evb_defconfig b/configs/sh7752evb_defconfig
index 124154cc96..1f7c6d0284 100644
--- a/configs/sh7752evb_defconfig
+++ b/configs/sh7752evb_defconfig
@@ -1,2 +1,3 @@
 CONFIG_SH=y
+CONFIG_SH_32BIT=y
 CONFIG_TARGET_SH7752EVB=y
diff --git a/configs/sh7753evb_defconfig b/configs/sh7753evb_defconfig
index 9ff41218b9..35809e9530 100644
--- a/configs/sh7753evb_defconfig
+++ b/configs/sh7753evb_defconfig
@@ -1,2 +1,3 @@
 CONFIG_SH=y
+CONFIG_SH_32BIT=y
 CONFIG_TARGET_SH7753EVB=y
diff --git a/configs/sh7757lcr_defconfig b/configs/sh7757lcr_defconfig
index 3066d97f84..ffcf961bb5 100644
--- a/configs/sh7757lcr_defconfig
+++ b/configs/sh7757lcr_defconfig
@@ -1,2 +1,3 @@
 CONFIG_SH=y
+CONFIG_SH_32BIT=y
 CONFIG_TARGET_SH7757LCR=y
diff --git a/configs/sh7785lcr_32bit_defconfig b/configs/sh7785lcr_32bit_defconfig
index 7cf93b47ed..31b84ff352 100644
--- a/configs/sh7785lcr_32bit_defconfig
+++ b/configs/sh7785lcr_32bit_defconfig
@@ -1,3 +1,3 @@
-CONFIG_SYS_EXTRA_OPTIONS="SH_32BIT=1"
 CONFIG_SH=y
+CONFIG_SH_32BIT=y
 CONFIG_TARGET_SH7785LCR=y
diff --git a/drivers/serial/serial_sh.h b/drivers/serial/serial_sh.h
index 53406e5855..ef88c8f273 100644
--- a/drivers/serial/serial_sh.h
+++ b/drivers/serial/serial_sh.h
@@ -433,7 +433,7 @@ static inline void sci_##name##_out(struct uart_port *port,\
 		SCI_OUT(sci_size, sci_offset, value);\
 	}
 
-#if defined(CONFIG_SH3) || \
+#if defined(CONFIG_CPU_SH3) || \
 	defined(CONFIG_ARCH_SH7367) || \
 	defined(CONFIG_ARCH_SH7377) || \
 	defined(CONFIG_ARCH_SH7372) || \
diff --git a/include/configs/rsk7203.h b/include/configs/rsk7203.h
index 5436324580..e7f73872ee 100644
--- a/include/configs/rsk7203.h
+++ b/include/configs/rsk7203.h
@@ -11,7 +11,6 @@
 #define __RSK7203_H
 
 #undef DEBUG
-#define CONFIG_SH2A		1
 #define CONFIG_CPU_SH7203	1
 #define CONFIG_RSK7203	1
 
diff --git a/include/configs/rsk7264.h b/include/configs/rsk7264.h
index 4aaa3ef74b..2ecf785082 100644
--- a/include/configs/rsk7264.h
+++ b/include/configs/rsk7264.h
@@ -12,7 +12,6 @@
 #define __RSK7264_H
 
 #undef DEBUG
-#define CONFIG_SH2A		1
 #define CONFIG_CPU_SH7264	1
 #define CONFIG_RSK7264		1
 
diff --git a/include/configs/rsk7269.h b/include/configs/rsk7269.h
index 11fc231fa6..14c1da774d 100644
--- a/include/configs/rsk7269.h
+++ b/include/configs/rsk7269.h
@@ -11,7 +11,6 @@
 #define __RSK7269_H
 
 #undef DEBUG
-#define CONFIG_SH2A		1
 #define CONFIG_CPU_SH7269	1
 #define CONFIG_RSK7269		1
 
diff --git a/include/configs/sh7752evb.h b/include/configs/sh7752evb.h
index f06abbca0c..2d509a9b9c 100644
--- a/include/configs/sh7752evb.h
+++ b/include/configs/sh7752evb.h
@@ -10,7 +10,6 @@
 #define __SH7752EVB_H
 
 #undef DEBUG
-#define CONFIG_SH_32BIT		1
 #define CONFIG_CPU_SH7752	1
 #define CONFIG_SH7752EVB	1
 
diff --git a/include/configs/sh7753evb.h b/include/configs/sh7753evb.h
index e400db08ad..c31dd7a174 100644
--- a/include/configs/sh7753evb.h
+++ b/include/configs/sh7753evb.h
@@ -10,7 +10,6 @@
 #define __SH7753EVB_H
 
 #undef DEBUG
-#define CONFIG_SH_32BIT		1
 #define CONFIG_CPU_SH7753	1
 #define CONFIG_SH7753EVB	1
 
diff --git a/include/configs/sh7757lcr.h b/include/configs/sh7757lcr.h
index 08bff1da3f..36afd5f70a 100644
--- a/include/configs/sh7757lcr.h
+++ b/include/configs/sh7757lcr.h
@@ -10,7 +10,6 @@
 #define __SH7757LCR_H
 
 #undef DEBUG
-#define CONFIG_SH_32BIT		1
 #define CONFIG_CPU_SH7757	1
 #define CONFIG_SH7757LCR	1
 #define CONFIG_SH7757LCR_DDR_ECC	1
diff --git a/include/sh_tmu.h b/include/sh_tmu.h
index 61afc7136d..97d578dd55 100644
--- a/include/sh_tmu.h
+++ b/include/sh_tmu.h
@@ -25,7 +25,7 @@
 
 #include <asm/types.h>
 
-#if defined(CONFIG_SH3)
+#if defined(CONFIG_CPU_SH3)
 struct tmu_regs {
 	u8	tocr;
 	u8	reserved0;
@@ -45,9 +45,9 @@ struct tmu_regs {
 	u16	reserved4;
 	u32	tcpr2;
 };
-#endif /* CONFIG_SH3 */
+#endif /* CONFIG_CPU_SH3 */
 
-#if defined(CONFIG_SH4) || defined(CONFIG_RMOBILE)
+#if defined(CONFIG_CPU_SH4) || defined(CONFIG_RMOBILE)
 struct tmu_regs {
 	u32 reserved;
 	u8  tstr;
@@ -65,7 +65,7 @@ struct tmu_regs {
 	u16 tcr2;
 	u16 reserved5;
 };
-#endif /* CONFIG_SH4 */
+#endif /* CONFIG_CPU_SH4 */
 
 static inline unsigned long get_tmu0_clk_rate(void)
 {