ARM: mxs: Consolidate configuration options

Pull all the duplicate configuration options into configs/mxs.h
from the board configuration files. This reduces the files greatly
and makes them somewhat more readable. Besides, we do no longer
have such a horrible duplication of code.

Note that the mx23evk grew in size slightly. This is due to the
CONFIG_SYS_CBSIZE now being set to 1024 as it is on the rest of
MXS systems.

This patch also fixes the OCRAM size for i.MX23. The i.MX23 has
only 32kB of OCRAM, while i.MX28 has 128kB of OCRAM.

I verified the configuration didn't change for each of the boards,
but I didn't boot-test it on the boards I do not have. I configured
U-Boot for each board using the "make ... <board>_config" command
and then ran "cpp -I include -dM include/config.h" , which dumped
all the configuration options. I did this both before and after this
patch and finally compared the results for each MXS board. Actually,
the results do differ slightly, since the configs/mxs.h file now
properly includes the correct iomux-mx23.h or iomux-mx28.h , so
while comparing, I had to ignore these new defines. These have no
impact on U-Boot configuration though.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Lauri Hintsala <lauri.hintsala@bluegiga.com>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Stefano Babic <sbabic@denx.de>

7 files changed, 340 insertions, 732 deletions

diff --git a/include/configs/apx4devkit.h b/include/configs/apx4devkit.h
index 3242133..7081f37 100644
--- a/include/configs/apx4devkit.h
+++ b/include/configs/apx4devkit.h
@@ -19,34 +19,16 @@
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
  * GNU General Public License for more details.
  */
-#ifndef __CONFIG_H
-#define __CONFIG_H
+#ifndef __CONFIGS_APX4DEVKIT_H__
+#define __CONFIGS_APX4DEVKIT_H__
 
-/* SoC configurations */
+/* System configurations */
 #define CONFIG_MX28				/* i.MX28 SoC */
-#define CONFIG_MXS_GPIO				/* GPIO control */
-#define CONFIG_SYS_HZ		1000		/* Ticks per second */
-
 #define MACH_TYPE_APX4DEVKIT	3712
 #define CONFIG_MACH_TYPE	MACH_TYPE_APX4DEVKIT
 
-#include <asm/arch/regs-base.h>
-
-#define CONFIG_SYS_NO_FLASH
-#define CONFIG_BOARD_EARLY_INIT_F
-#define CONFIG_ARCH_CPU_INIT
-#define CONFIG_ARCH_MISC_INIT
-
-/* SPL */
-#define CONFIG_SPL
-#define CONFIG_SPL_NO_CPU_SUPPORT_CODE
-#define CONFIG_SPL_START_S_PATH	"arch/arm/cpu/arm926ejs/mxs"
-#define CONFIG_SPL_LDSCRIPT	"arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds"
-#define CONFIG_SPL_LIBCOMMON_SUPPORT
-#define CONFIG_SPL_LIBGENERIC_SUPPORT
-#define CONFIG_SPL_GPIO_SUPPORT
-
 /* U-Boot Commands */
+#define CONFIG_SYS_NO_FLASH
 #include <config_cmd_default.h>
 #define CONFIG_DISPLAY_CPUINFO
 #define CONFIG_DOS_PARTITION
@@ -66,78 +48,26 @@
 #define CONFIG_CMD_SAVEENV
 #define CONFIG_CMD_USB
 
-/* Memory configurations */
+/* Memory configuration */
 #define CONFIG_NR_DRAM_BANKS		1		/* 1 bank of DRAM */
 #define PHYS_SDRAM_1			0x40000000	/* Base address */
 #define PHYS_SDRAM_1_SIZE		0x20000000	/* Max 512 MB RAM */
-#define CONFIG_SYS_MALLOC_LEN		0x00400000	/* 4 MB for malloc */
-#define CONFIG_SYS_MEMTEST_START	0x40000000	/* Memtest start adr */
-#define CONFIG_SYS_MEMTEST_END		0x40400000	/* 4 MB RAM test */
 #define CONFIG_SYS_SDRAM_BASE		PHYS_SDRAM_1
 
-/* Point initial SP in SRAM so SPL can use it too. */
-#define CONFIG_SYS_INIT_RAM_ADDR	0x00000000
-#define CONFIG_SYS_INIT_RAM_SIZE	(128 * 1024)
-
-#define CONFIG_SYS_INIT_SP_OFFSET \
-	(CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
-#define CONFIG_SYS_INIT_SP_ADDR \
-	(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
-
-/*
- * We need to sacrifice first 4 bytes of RAM here to avoid triggering some
- * strange BUG in ROM corrupting first 4 bytes of RAM when loading U-Boot
- * binary. In case there was more of this mess, 0x100 bytes are skipped.
- */
-#define CONFIG_SYS_TEXT_BASE		0x40000100
 
+/* Environment */
 #define CONFIG_ENV_OVERWRITE
-
-/* U-Boot general configurations */
-#define CONFIG_SYS_LONGHELP
-#define CONFIG_SYS_PROMPT		"=> "
-#define CONFIG_SYS_CBSIZE		1024	/* Console I/O buffer size */
-#define CONFIG_SYS_PBSIZE	\
-	(CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
-						/* Print buffer size */
-#define CONFIG_SYS_MAXARGS		32	/* Max number of command args */
-#define CONFIG_SYS_BARGSIZE		CONFIG_SYS_CBSIZE
-						/* Boot argument buffer size */
-#define CONFIG_VERSION_VARIABLE			/* U-Boot version */
-#define CONFIG_AUTO_COMPLETE			/* Command auto complete */
-#define CONFIG_CMDLINE_EDITING			/* Command history etc. */
-#define CONFIG_SYS_HUSH_PARSER
-#define CONFIG_SYS_PROMPT_HUSH_PS2	"> "
-#define CONFIG_OF_LIBFDT
 #define CONFIG_ENV_IS_IN_NAND
 
-/* Serial Driver */
-#define CONFIG_PL011_SERIAL
-#define CONFIG_PL011_CLOCK		24000000
-#define CONFIG_PL01x_PORTS		{ (void *)MXS_UARTDBG_BASE }
-#define CONFIG_CONS_INDEX		0
-#define CONFIG_BAUDRATE			115200	/* Default baud rate */
-#define CONFIG_SYS_BAUDRATE_TABLE	{ 9600, 19200, 38400, 57600, 115200 }
-
-/* DMA */
-#define CONFIG_APBH_DMA
-
-/* MMC Driver */
-#ifdef CONFIG_ENV_IS_IN_MMC
+/* Environment is in MMC */
+#if defined(CONFIG_CMD_MMC) && defined(CONFIG_ENV_IS_IN_MMC)
 #define CONFIG_ENV_OFFSET		(256 * 1024)
 #define CONFIG_ENV_SIZE			(16 * 1024)
 #define CONFIG_SYS_MMC_ENV_DEV		0
 #endif
 
-#ifdef CONFIG_CMD_MMC
-#define CONFIG_MMC
-#define CONFIG_GENERIC_MMC
-#define CONFIG_BOUNCE_BUFFER
-#define CONFIG_MXS_MMC
-#endif
-
-/* NAND Driver */
-#ifdef CONFIG_ENV_IS_IN_NAND
+/* Environment is in NAND */
+#if defined(CONFIG_CMD_NAND) && defined(CONFIG_ENV_IS_IN_NAND)
 #define CONFIG_ENV_SECT_SIZE		(128 * 1024)
 #define CONFIG_ENV_SIZE			(128 * 1024)
 #define CONFIG_ENV_SIZE_REDUND		CONFIG_ENV_SIZE
@@ -147,12 +77,8 @@
 		(CONFIG_ENV_OFFSET + CONFIG_ENV_RANGE)
 #endif
 
+/* UBI and NAND partitioning */
 #ifdef CONFIG_CMD_NAND
-#define CONFIG_NAND_MXS
-#define CONFIG_SYS_MAX_NAND_DEVICE	1
-#define CONFIG_SYS_NAND_BASE		0x60000000
-#define CONFIG_SYS_NAND_5_ADDR_CYCLE
-
 #define CONFIG_CMD_UBI
 #define CONFIG_CMD_UBIFS
 #define CONFIG_CMD_MTDPARTS
@@ -167,43 +93,30 @@
 #define MTDPARTS_DEFAULT		""
 #endif
 
-/* Ethernet on SOC (FEC) */
+/* FEC Ethernet on SoC */
 #ifdef CONFIG_CMD_NET
+#define CONFIG_FEC_MXC
 #define CONFIG_NET_MULTI
 #define CONFIG_ETHPRIME			"FEC"
-#define CONFIG_FEC_MXC
 #define CONFIG_FEC_MXC_PHYADDR		0
 #define IMX_FEC_BASE			MXS_ENET0_BASE
-#define CONFIG_MII
-#define CONFIG_FEC_XCV_TYPE		RMII
 #endif
 
 /* USB */
 #ifdef CONFIG_CMD_USB
-#define CONFIG_USB_EHCI
-#define CONFIG_USB_EHCI_MXS
 #define CONFIG_EHCI_MXS_PORT1
 #define CONFIG_USB_MAX_CONTROLLER_COUNT	1
-#define CONFIG_EHCI_IS_TDI
 #define CONFIG_USB_STORAGE
 #endif
 
-/* I2C */
-#ifdef CONFIG_CMD_I2C
-#define CONFIG_I2C_MXS
-#define CONFIG_HARD_I2C
-#define CONFIG_SYS_I2C_SPEED		400000
-#endif
 
 /* RTC */
-#if defined(CONFIG_CMD_DATE)
+#ifdef CONFIG_CMD_DATE
 #define CONFIG_RTC_PCF8563
 #define CONFIG_SYS_I2C_RTC_ADDR		0x51
 #endif
 
 /* Boot Linux */
-#define CONFIG_CMDLINE_TAG
-#define CONFIG_SETUP_MEMORY_TAGS
 #define CONFIG_BOOTDELAY		1
 #define CONFIG_BOOTFILE			"uImage"
 #define CONFIG_BOOTCOMMAND		"run bootcmd_nand"
@@ -233,4 +146,7 @@
 		"ext2load mmc 0:2 41000000 boot/uImage && bootm 41000000\0" \
 ""
 
-#endif /* __CONFIG_H */
+/* The rest of the configuration is shared */
+#include <configs/mxs.h>
+
+#endif /* __CONFIGS_APX4DEVKIT_H__ */
diff --git a/include/configs/m28evk.h b/include/configs/m28evk.h
index 10ccc3b..b6fa6eb 100644
--- a/include/configs/m28evk.h
+++ b/include/configs/m28evk.h
@@ -17,43 +17,17 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  * MA 02111-1307 USA
  */
-#ifndef __M28EVK_CONFIG_H__
-#define __M28EVK_CONFIG_H__
+#ifndef __CONFIGS_M28EVK_H__
+#define __CONFIGS_M28EVK_H__
 
-/*
- * SoC configurations
- */
-#define CONFIG_MX28				/* i.MX28 SoC */
-#define CONFIG_MXS_GPIO				/* GPIO control */
-#define CONFIG_SYS_HZ		1000		/* Ticks per second */
 
-/*
- * Define M28EVK machine type by hand until it lands in mach-types
- */
+/* System configurations */
+#define CONFIG_MX28				/* i.MX28 SoC */
 #define MACH_TYPE_M28EVK	3613
-
 #define CONFIG_MACH_TYPE	MACH_TYPE_M28EVK
 
-#include <asm/arch/regs-base.h>
-
+/* U-Boot Commands */
 #define CONFIG_SYS_NO_FLASH
-#define CONFIG_BOARD_EARLY_INIT_F
-#define CONFIG_ARCH_MISC_INIT
-
-/*
- * SPL
- */
-#define CONFIG_SPL
-#define CONFIG_SPL_NO_CPU_SUPPORT_CODE
-#define CONFIG_SPL_START_S_PATH		"arch/arm/cpu/arm926ejs/mxs"
-#define CONFIG_SPL_LDSCRIPT	"arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds"
-#define CONFIG_SPL_LIBCOMMON_SUPPORT
-#define CONFIG_SPL_LIBGENERIC_SUPPORT
-#define CONFIG_SPL_GPIO_SUPPORT
-
-/*
- * U-Boot Commands
- */
 #include <config_cmd_default.h>
 #define CONFIG_DISPLAY_CPUINFO
 #define CONFIG_DOS_PARTITION
@@ -82,86 +56,18 @@
 
 #define CONFIG_REGEX			/* Enable regular expression support */
 
-/*
- * Memory configurations
- */
+/* Memory configuration */
 #define CONFIG_NR_DRAM_BANKS		1		/* 1 bank of DRAM */
 #define PHYS_SDRAM_1			0x40000000	/* Base address */
 #define PHYS_SDRAM_1_SIZE		0x20000000	/* Max 512 MB RAM */
-#define CONFIG_SYS_MALLOC_LEN		0x00400000	/* 4 MB for malloc */
-#define CONFIG_SYS_GBL_DATA_SIZE	128		/* Initial data */
-#define CONFIG_SYS_MEMTEST_START	0x40000000	/* Memtest start adr */
-#define CONFIG_SYS_MEMTEST_END		0x40400000	/* 4 MB RAM test */
 #define CONFIG_SYS_SDRAM_BASE		PHYS_SDRAM_1
-/* Point initial SP in SRAM so SPL can use it too. */
-
-#define CONFIG_SYS_INIT_RAM_ADDR	0x00000000
-#define CONFIG_SYS_INIT_RAM_SIZE	(128 * 1024)
-
-#define CONFIG_SYS_INIT_SP_OFFSET \
-	(CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
-#define CONFIG_SYS_INIT_SP_ADDR \
-	(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
-/*
- * We need to sacrifice first 4 bytes of RAM here to avoid triggering some
- * strange BUG in ROM corrupting first 4 bytes of RAM when loading U-Boot
- * binary. In case there was more of this mess, 0x100 bytes are skipped.
- */
-#define CONFIG_SYS_TEXT_BASE		0x40000100
-
-/*
- * U-Boot general configurations
- */
-#define CONFIG_SYS_LONGHELP
-#define CONFIG_SYS_PROMPT	"=> "
-#define CONFIG_SYS_CBSIZE	1024		/* Console I/O buffer size */
-#define CONFIG_SYS_PBSIZE	\
-	(CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
-						/* Print buffer size */
-#define CONFIG_SYS_MAXARGS	32		/* Max number of command args */
-#define CONFIG_SYS_BARGSIZE	CONFIG_SYS_CBSIZE
-						/* Boot argument buffer size */
-#define CONFIG_VERSION_VARIABLE			/* U-BOOT version */
-#define CONFIG_AUTO_COMPLETE			/* Command auto complete */
-#define CONFIG_CMDLINE_EDITING			/* Command history etc */
-#define CONFIG_SYS_HUSH_PARSER
-
-/*
- * Serial Driver
- */
-#define CONFIG_PL011_SERIAL
-#define CONFIG_PL011_CLOCK		24000000
-#define CONFIG_PL01x_PORTS		{ (void *)MXS_UARTDBG_BASE }
-#define CONFIG_CONS_INDEX		0
-#define CONFIG_BAUDRATE			115200	/* Default baud rate */
-
-/*
- * MMC Driver
- */
-#ifdef	CONFIG_CMD_MMC
-#define CONFIG_MMC
-#define CONFIG_BOUNCE_BUFFER
-#define CONFIG_GENERIC_MMC
-#define CONFIG_MXS_MMC
-#endif
 
-/*
- * APBH DMA
- */
-#define CONFIG_APBH_DMA
-
-/*
- * NAND
- */
+/* Environment */
 #define CONFIG_ENV_SIZE			(16 * 1024)
-#ifdef	CONFIG_CMD_NAND
-#define CONFIG_NAND_MXS
-#define CONFIG_SYS_MAX_NAND_DEVICE	1
-#define CONFIG_SYS_NAND_BASE		0x60000000
-#define CONFIG_SYS_NAND_5_ADDR_CYCLE
+#define CONFIG_ENV_IS_IN_NAND
 
 /* Environment is in NAND */
-#define CONFIG_ENV_IS_IN_NAND
+#if defined(CONFIG_CMD_NAND) && defined(CONFIG_ENV_IS_IN_NAND)
 #define CONFIG_ENV_SIZE_REDUND		CONFIG_ENV_SIZE
 #define CONFIG_ENV_SECT_SIZE		(128 * 1024)
 #define CONFIG_ENV_RANGE		(512 * 1024)
@@ -190,40 +96,22 @@
 #define CONFIG_ENV_IS_NOWHERE
 #endif
 
-/*
- * Ethernet on SOC (FEC)
- */
-#ifdef	CONFIG_CMD_NET
-#define CONFIG_ETHPRIME			"FEC0"
+/* FEC Ethernet on SoC */
+#ifdef CONFIG_CMD_NET
 #define CONFIG_FEC_MXC
-#define CONFIG_MII
-#define CONFIG_FEC_XCV_TYPE		RMII
 #endif
 
-/*
- * I2C
- */
-#ifdef	CONFIG_CMD_I2C
-#define CONFIG_I2C_MXS
-#define CONFIG_HARD_I2C
-#define CONFIG_SYS_I2C_SPEED		400000
-#endif
-
-/*
- * EEPROM
- */
-#ifdef	CONFIG_CMD_EEPROM
+/* EEPROM */
+#ifdef CONFIG_CMD_EEPROM
 #define CONFIG_SYS_I2C_MULTI_EEPROMS
 #define CONFIG_SYS_I2C_EEPROM_ADDR_LEN	2
 #endif
 
-/*
- * RTC
- */
-#ifdef	CONFIG_CMD_DATE
+/* RTC */
+#ifdef CONFIG_CMD_DATE
 /* Use the internal RTC in the MXS chip */
 #define CONFIG_RTC_INTERNAL
-#ifdef	CONFIG_RTC_INTERNAL
+#ifdef CONFIG_RTC_INTERNAL
 #define CONFIG_RTC_MXS
 #else
 #define CONFIG_RTC_M41T62
@@ -232,32 +120,22 @@
 #endif
 #endif
 
-/*
- * USB
- */
-#ifdef	CONFIG_CMD_USB
-#define CONFIG_USB_EHCI
-#define CONFIG_USB_EHCI_MXS
+/* USB */
+#ifdef CONFIG_CMD_USB
 #define CONFIG_EHCI_MXS_PORT0
 #define CONFIG_EHCI_MXS_PORT1
 #define CONFIG_USB_MAX_CONTROLLER_COUNT	2
-#define CONFIG_EHCI_IS_TDI
 #define CONFIG_USB_STORAGE
 #endif
 
-/*
- * SPI
- */
-#ifdef	CONFIG_CMD_SPI
-#define CONFIG_HARD_SPI
-#define CONFIG_MXS_SPI
-#define CONFIG_SPI_HALF_DUPLEX
+/* SPI */
+#ifdef CONFIG_CMD_SPI
 #define CONFIG_DEFAULT_SPI_BUS		2
 #define CONFIG_DEFAULT_SPI_CS		0
 #define CONFIG_DEFAULT_SPI_MODE		SPI_MODE_0
 
 /* SPI FLASH */
-#ifdef	CONFIG_CMD_SF
+#ifdef CONFIG_CMD_SF
 #define CONFIG_SPI_FLASH
 #define CONFIG_SPI_FLASH_STMICRO
 #define CONFIG_SF_DEFAULT_BUS		2
@@ -270,18 +148,12 @@
 #define CONFIG_ENV_SPI_MAX_HZ		40000000
 #define CONFIG_ENV_SPI_MODE		SPI_MODE_0
 #endif
+
 #endif
 
-/*
- * LCD
- */
-#ifdef	CONFIG_VIDEO
-#define	CONFIG_CFB_CONSOLE
-#define	CONFIG_VIDEO_MXS
+/* LCD */
+#ifdef CONFIG_VIDEO
 #define	CONFIG_VIDEO_LOGO
-#define	CONFIG_VIDEO_SW_CURSOR
-#define	CONFIG_VGA_AS_SINGLE_DEVICE
-#define	CONFIG_SYS_CONSOLE_IS_IN_ENV
 #define	CONFIG_SPLASH_SCREEN
 #define	CONFIG_CMD_BMP
 #define	CONFIG_BMP_16BPP
@@ -290,22 +162,15 @@
 #define	CONFIG_SYS_VIDEO_LOGO_MAX_SIZE	(512 << 10)
 #endif
 
-/*
- * Boot Linux
- */
-#define CONFIG_CMDLINE_TAG
-#define CONFIG_SETUP_MEMORY_TAGS
+/* Booting Linux */
 #define CONFIG_BOOTDELAY	3
 #define CONFIG_BOOTFILE		"uImage"
 #define CONFIG_BOOTARGS		"console=ttyAMA0,115200n8 "
 #define CONFIG_BOOTCOMMAND	"run bootcmd_net"
 #define CONFIG_LOADADDR		0x42000000
 #define CONFIG_SYS_LOAD_ADDR	CONFIG_LOADADDR
-#define CONFIG_OF_LIBFDT
 
-/*
- * Extra Environments
- */
+/* Extra Environment */
 #define CONFIG_EXTRA_ENV_SETTINGS					\
 	"update_nand_full_filename=u-boot.nand\0"			\
 	"update_nand_firmware_filename=u-boot.sb\0"			\
@@ -346,4 +211,7 @@
 		"fi ; "							\
 		"fi\0"
 
-#endif /* __M28EVK_CONFIG_H__ */
+/* The rest of the configuration is shared */
+#include <configs/mxs.h>
+
+#endif /* __CONFIGS_M28EVK_H__ */
diff --git a/include/configs/mx23_olinuxino.h b/include/configs/mx23_olinuxino.h
index 38ad7f4..418d4fd 100644
--- a/include/configs/mx23_olinuxino.h
+++ b/include/configs/mx23_olinuxino.h
@@ -16,40 +16,15 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  * MA 02111-1307 USA
  */
-#ifndef __MX23_OLINUXINO_CONFIG_H__
-#define __MX23_OLINUXINO_CONFIG_H__
+#ifndef __CONFIGS_MX23_OLINUXINO_H__
+#define __CONFIGS_MX23_OLINUXINO_H__
 
-#include <asm/arch/iomux-mx23.h>
-
-/*
- * SoC configurations
- */
+/* System configurations */
 #define CONFIG_MX23				/* i.MX23 SoC */
-#define CONFIG_MXS_GPIO				/* GPIO control */
-#define CONFIG_SYS_HZ		1000		/* Ticks per second */
-
 #define CONFIG_MACH_TYPE	4105
 
-#include <asm/arch/regs-base.h>
-
+/* U-Boot Commands */
 #define CONFIG_SYS_NO_FLASH
-#define CONFIG_BOARD_EARLY_INIT_F
-#define CONFIG_ARCH_MISC_INIT
-
-/*
- * SPL
- */
-#define CONFIG_SPL
-#define CONFIG_SPL_NO_CPU_SUPPORT_CODE
-#define CONFIG_SPL_START_S_PATH		"arch/arm/cpu/arm926ejs/mxs"
-#define CONFIG_SPL_LDSCRIPT	"arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds"
-#define CONFIG_SPL_LIBCOMMON_SUPPORT
-#define CONFIG_SPL_LIBGENERIC_SUPPORT
-#define CONFIG_SPL_GPIO_SUPPORT
-
-/*
- * U-Boot Commands
- */
 #include <config_cmd_default.h>
 #define CONFIG_DISPLAY_CPUINFO
 #define CONFIG_DOS_PARTITION
@@ -64,92 +39,36 @@
 #define CONFIG_CMD_NET
 #define CONFIG_CMD_USB
 
-/*
- * Memory configurations
- */
+/* Memory configuration */
 #define CONFIG_NR_DRAM_BANKS		1		/* 1 bank of DRAM */
 #define PHYS_SDRAM_1			0x40000000	/* Base address */
 #define PHYS_SDRAM_1_SIZE		0x08000000	/* Max 128 MB RAM */
-#define CONFIG_SYS_MALLOC_LEN		0x00400000	/* 4 MB for malloc */
-#define CONFIG_SYS_GBL_DATA_SIZE	128		/* Initial data */
-#define CONFIG_SYS_MEMTEST_START	0x40000000	/* Memtest start adr */
-#define CONFIG_SYS_MEMTEST_END		0x40400000	/* 4 MB RAM test */
 #define CONFIG_SYS_SDRAM_BASE		PHYS_SDRAM_1
-/* Point initial SP in SRAM so SPL can use it too. */
-
-#define CONFIG_SYS_INIT_RAM_ADDR	0x00000000
-#define CONFIG_SYS_INIT_RAM_SIZE	(128 * 1024)
-
-#define CONFIG_SYS_INIT_SP_OFFSET \
-	(CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
-#define CONFIG_SYS_INIT_SP_ADDR \
-	(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
-/*
- * We need to sacrifice first 4 bytes of RAM here to avoid triggering some
- * strange BUG in ROM corrupting first 4 bytes of RAM when loading U-Boot
- * binary. In case there was more of this mess, 0x100 bytes are skipped.
- */
-#define CONFIG_SYS_TEXT_BASE		0x40000100
 
-/*
- * U-Boot general configurations
- */
-#define CONFIG_SYS_LONGHELP
-#define CONFIG_SYS_PROMPT	"=> "
-#define CONFIG_SYS_CBSIZE	1024		/* Console I/O buffer size */
-#define CONFIG_SYS_PBSIZE	\
-	(CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
-						/* Print buffer size */
-#define CONFIG_SYS_MAXARGS	32		/* Max number of command args */
-#define CONFIG_SYS_BARGSIZE	CONFIG_SYS_CBSIZE
-						/* Boot argument buffer size */
-#define CONFIG_VERSION_VARIABLE			/* U-BOOT version */
-#define CONFIG_AUTO_COMPLETE			/* Command auto complete */
-#define CONFIG_CMDLINE_EDITING			/* Command history etc */
-#define CONFIG_SYS_HUSH_PARSER
+/* Environment */
+#define CONFIG_ENV_IS_IN_MMC
+#define CONFIG_ENV_OVERWRITE
 
-/*
- * Serial Driver
- */
-#define CONFIG_PL011_SERIAL
-#define CONFIG_PL011_CLOCK		24000000
-#define CONFIG_PL01x_PORTS		{ (void *)MXS_UARTDBG_BASE }
-#define CONFIG_CONS_INDEX		0
-#define CONFIG_BAUDRATE			115200	/* Default baud rate */
+/* Environment is in MMC */
+#if defined(CONFIG_CMD_MMC) && defined(CONFIG_ENV_IS_IN_MMC)
+#define CONFIG_ENV_OFFSET	(256 * 1024)
+#define CONFIG_ENV_SIZE		(16 * 1024)
+#define CONFIG_SYS_MMC_ENV_DEV	0
+#endif
 
-/*
- * Status LED
- */
+/* Status LED */
 #define CONFIG_STATUS_LED
 #define CONFIG_GPIO_LED
 #define CONFIG_BOARD_SPECIFIC_LED
-#define STATUS_LED_BOOT	0
-#define STATUS_LED_BIT	MX23_PAD_SSP1_DETECT__GPIO_2_1
+#define STATUS_LED_BOOT		0
+#define STATUS_LED_BIT		MX23_PAD_SSP1_DETECT__GPIO_2_1
 #define STATUS_LED_STATE	STATUS_LED_ON
 #define STATUS_LED_PERIOD	(CONFIG_SYS_HZ / 2)
 
-/*
- * MMC Driver
- */
-#ifdef CONFIG_CMD_MMC
-#define CONFIG_MMC
-#define CONFIG_BOUNCE_BUFFER
-#define CONFIG_GENERIC_MMC
-#define CONFIG_MXS_MMC
-#endif
-
-/*
- * APBH DMA
- */
-#define CONFIG_APBH_DMA
-
 /* USB */
 #ifdef CONFIG_CMD_USB
-#define CONFIG_USB_EHCI
-#define CONFIG_USB_EHCI_MXS
 #define CONFIG_EHCI_MXS_PORT0
 #define CONFIG_USB_MAX_CONTROLLER_COUNT 1
-#define CONFIG_EHCI_IS_TDI
 #define CONFIG_USB_STORAGE
 #endif
 
@@ -159,31 +78,13 @@
 #define CONFIG_USB_ETHER_SMSC95XX
 #endif
 
-/*
- * Boot Linux
- */
-#define CONFIG_CMDLINE_TAG
-#define CONFIG_SETUP_MEMORY_TAGS
+/* Booting Linux */
 #define CONFIG_BOOTDELAY	3
 #define CONFIG_BOOTFILE		"uImage"
 #define CONFIG_LOADADDR		0x42000000
 #define CONFIG_SYS_LOAD_ADDR	CONFIG_LOADADDR
-#define CONFIG_OF_LIBFDT
 
-/*
- * Environment
- */
-#define CONFIG_ENV_IS_IN_MMC
-#define CONFIG_ENV_OVERWRITE
-#ifdef CONFIG_ENV_IS_IN_MMC
-#define CONFIG_ENV_OFFSET	(256 * 1024)
-#define CONFIG_ENV_SIZE	(16 * 1024)
-#define CONFIG_SYS_MMC_ENV_DEV 0
-#endif
-
-/*
- * Extra Environments
- */
+/* Extra Environment */
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	"update_sd_firmware_filename=u-boot.sd\0" \
 	"update_sd_firmware="		/* Update the SD firmware partition */ \
@@ -265,4 +166,7 @@
 		"fi; " \
 	"else run netboot; fi"
 
-#endif /* __MX23_OLINUXINO_CONFIG_H__ */
+/* The rest of the configuration is shared */
+#include <configs/mxs.h>
+
+#endif /* __CONFIGS_MX23_OLINUXINO_H__ */
diff --git a/include/configs/mx23evk.h b/include/configs/mx23evk.h
index 3a58afe..b52b9e6 100644
--- a/include/configs/mx23evk.h
+++ b/include/configs/mx23evk.h
@@ -19,33 +19,15 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  *
  */
-#ifndef __MX23EVK_CONFIG_H__
-#define __MX23EVK_CONFIG_H__
+#ifndef __CONFIGS_MX23EVK_H__
+#define __CONFIGS_MX23EVK_H__
 
-/* SoC configurations */
+/* System configurations */
 #define CONFIG_MX23				/* i.MX23 SoC */
-
-#include <asm/arch/regs-base.h>
-
-#define CONFIG_MXS_GPIO			/* GPIO control */
-#define CONFIG_SYS_HZ		1000		/* Ticks per second */
-
 #define CONFIG_MACH_TYPE	MACH_TYPE_MX23EVK
 
-#define CONFIG_SYS_NO_FLASH
-#define CONFIG_BOARD_EARLY_INIT_F
-#define CONFIG_ARCH_MISC_INIT
-
-/* SPL */
-#define CONFIG_SPL
-#define CONFIG_SPL_NO_CPU_SUPPORT_CODE
-#define CONFIG_SPL_START_S_PATH	"arch/arm/cpu/arm926ejs/mxs"
-#define CONFIG_SPL_LDSCRIPT	"arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds"
-#define CONFIG_SPL_LIBCOMMON_SUPPORT
-#define CONFIG_SPL_LIBGENERIC_SUPPORT
-#define CONFIG_SPL_GPIO_SUPPORT
-
 /* U-Boot Commands */
+#define CONFIG_SYS_NO_FLASH
 #include <config_cmd_default.h>
 #undef CONFIG_CMD_NET
 #undef CONFIG_CMD_NFS
@@ -62,86 +44,33 @@
 #define CONFIG_CMD_BOOTZ
 #define CONFIG_VIDEO
 
-/* Memory configurations */
+/* Memory configuration */
 #define CONFIG_NR_DRAM_BANKS		1		/* 1 bank of DRAM */
 #define PHYS_SDRAM_1			0x40000000	/* Base address */
 #define PHYS_SDRAM_1_SIZE		0x08000000	/* Max 128 MB RAM */
-#define CONFIG_STACKSIZE		(128 * 1024)	/* 128 KB stack */
-#define CONFIG_SYS_MALLOC_LEN		0x00400000	/* 4 MB for malloc */
-#define CONFIG_SYS_MEMTEST_START	0x40000000	/* Memtest start adr */
-#define CONFIG_SYS_MEMTEST_END		0x40400000	/* 4 MB RAM test */
 #define CONFIG_SYS_SDRAM_BASE		PHYS_SDRAM_1
-/* Point initial SP in SRAM so SPL can use it too. */
-
-#define CONFIG_SYS_INIT_RAM_ADDR	0x00000000
-#define CONFIG_SYS_INIT_RAM_SIZE	(128 * 1024)
-
-#define CONFIG_SYS_INIT_SP_OFFSET \
-	(CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
-#define CONFIG_SYS_INIT_SP_ADDR \
-	(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
-
-/*
- * We need to sacrifice first 4 bytes of RAM here to avoid triggering some
- * strange BUG in ROM corrupting first 4 bytes of RAM when loading U-Boot
- * binary. In case there was more of this mess, 0x100 bytes are skipped.
- */
-#define CONFIG_SYS_TEXT_BASE	0x40000100
 
+/* Environment */
 #define CONFIG_ENV_OVERWRITE
+#define CONFIG_ENV_IS_IN_MMC
 
-/* U-Boot general configurations */
-#define CONFIG_SYS_LONGHELP
-#define CONFIG_SYS_PROMPT	"=> "
-#define CONFIG_SYS_CBSIZE	256		/* Console I/O buffer size */
-#define CONFIG_SYS_PBSIZE	\
-	(CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
-						/* Print buffer size */
-#define CONFIG_SYS_MAXARGS	32		/* Max number of command args */
-#define CONFIG_SYS_BARGSIZE	CONFIG_SYS_CBSIZE
-						/* Boot argument buffer size */
-#define CONFIG_VERSION_VARIABLE	/* U-BOOT version */
-#define CONFIG_AUTO_COMPLETE		/* Command auto complete */
-#define CONFIG_CMDLINE_EDITING		/* Command history etc */
-#define CONFIG_SYS_HUSH_PARSER
-#define CONFIG_SYS_PROMPT_HUSH_PS2	"> "
-
-/* Serial Driver */
-#define CONFIG_PL011_SERIAL
-#define CONFIG_PL011_CLOCK		24000000
-#define CONFIG_PL01x_PORTS		{ (void *)MXS_UARTDBG_BASE }
-#define CONFIG_CONS_INDEX		0
-#define CONFIG_BAUDRATE			115200	/* Default baud rate */
-
-/* DMA */
-#define CONFIG_APBH_DMA
-
-/* MMC Driver */
-#ifdef	CONFIG_CMD_MMC
-#define CONFIG_MMC
-#define CONFIG_GENERIC_MMC
-#define CONFIG_BOUNCE_BUFFER
-#define CONFIG_MXS_MMC
+/* Environment is in MMC */
+#if defined(CONFIG_CMD_MMC) && defined(CONFIG_ENV_IS_IN_MMC)
+#define CONFIG_ENV_OFFSET	(256 * 1024)
+#define CONFIG_ENV_SIZE		(16 * 1024)
+#define CONFIG_SYS_MMC_ENV_DEV	0
 #endif
 
 /* USB */
 #ifdef	CONFIG_CMD_USB
-#define CONFIG_USB_EHCI
-#define CONFIG_USB_EHCI_MXS
 #define CONFIG_EHCI_MXS_PORT0
 #define CONFIG_USB_MAX_CONTROLLER_COUNT 1
-#define CONFIG_EHCI_IS_TDI
 #define CONFIG_USB_STORAGE
 #endif
 
 /* Framebuffer support */
 #ifdef CONFIG_VIDEO
-#define CONFIG_CFB_CONSOLE
-#define CONFIG_VIDEO_MXS
 #define CONFIG_VIDEO_LOGO
-#define CONFIG_VIDEO_SW_CURSOR
-#define CONFIG_VGA_AS_SINGLE_DEVICE
-#define CONFIG_SYS_CONSOLE_IS_IN_ENV
 #define CONFIG_SPLASH_SCREEN
 #define CONFIG_CMD_BMP
 #define CONFIG_BMP_16BPP
@@ -151,21 +80,10 @@
 #endif
 
 /* Boot Linux */
-#define CONFIG_CMDLINE_TAG
-#define CONFIG_SETUP_MEMORY_TAGS
 #define CONFIG_BOOTDELAY	1
-#define CONFIG_BOOTFILE	"uImage"
-#define CONFIG_LOADADDR	0x42000000
+#define CONFIG_BOOTFILE		"uImage"
+#define CONFIG_LOADADDR		0x42000000
 #define CONFIG_SYS_LOAD_ADDR	CONFIG_LOADADDR
-#define CONFIG_OF_LIBFDT
-
-/* Environment */
-#define CONFIG_ENV_IS_IN_MMC
-#ifdef CONFIG_ENV_IS_IN_MMC
- #define CONFIG_ENV_OFFSET	(256 * 1024)
- #define CONFIG_ENV_SIZE	(16 * 1024)
- #define CONFIG_SYS_MMC_ENV_DEV 0
-#endif
 
 /* Extra Environments */
 #define CONFIG_EXTRA_ENV_SETTINGS \
@@ -224,4 +142,7 @@
 		"fi; " \
 	"else exit; fi"
 
-#endif /* __MX23EVK_CONFIG_H__ */
+/* The rest of the configuration is shared */
+#include <configs/mxs.h>
+
+#endif /* __CONFIGS_MX23EVK_H__ */
diff --git a/include/configs/mx28evk.h b/include/configs/mx28evk.h
index de69182..877b811 100644
--- a/include/configs/mx28evk.h
+++ b/include/configs/mx28evk.h
@@ -16,33 +16,16 @@
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
  * GNU General Public License for more details.
  */
-#ifndef __MX28EVK_CONFIG_H__
-#define __MX28EVK_CONFIG_H__
+#ifndef __CONFIGS_MX28EVK_H__
+#define __CONFIGS_MX28EVK_H__
 
-/* SoC configurations */
+/* System configurations */
 #define CONFIG_MX28				/* i.MX28 SoC */
-
-#define CONFIG_MXS_GPIO			/* GPIO control */
-#define CONFIG_SYS_HZ		1000		/* Ticks per second */
-
 #define CONFIG_MACH_TYPE	MACH_TYPE_MX28EVK
-
-#include <asm/arch/regs-base.h>
-
-#define CONFIG_SYS_NO_FLASH
-#define CONFIG_BOARD_EARLY_INIT_F
-#define CONFIG_ARCH_MISC_INIT
-
-/* SPL */
-#define CONFIG_SPL
-#define CONFIG_SPL_NO_CPU_SUPPORT_CODE
-#define CONFIG_SPL_START_S_PATH	"arch/arm/cpu/arm926ejs/mxs"
-#define CONFIG_SPL_LDSCRIPT	"arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds"
-#define CONFIG_SPL_LIBCOMMON_SUPPORT
-#define CONFIG_SPL_LIBGENERIC_SUPPORT
-#define CONFIG_SPL_GPIO_SUPPORT
+#define CONFIG_SYS_PROMPT	"MX28EVK U-Boot > "
 
 /* U-Boot Commands */
+#define CONFIG_SYS_NO_FLASH
 #include <config_cmd_default.h>
 #define CONFIG_DISPLAY_CPUINFO
 #define CONFIG_DOS_PARTITION
@@ -57,6 +40,7 @@
 #define CONFIG_CMD_NET
 #define CONFIG_CMD_NFS
 #define CONFIG_CMD_PING
+#define CONFIG_CMD_SAVEENV
 #define CONFIG_CMD_SETEXPR
 #define CONFIG_CMD_SF
 #define CONFIG_CMD_SPI
@@ -66,81 +50,24 @@
 #define CONFIG_CMD_NAND_TRIMFFS
 #define CONFIG_VIDEO
 
-/* Memory configurations */
+/* Memory configuration */
 #define CONFIG_NR_DRAM_BANKS		1		/* 1 bank of DRAM */
 #define PHYS_SDRAM_1			0x40000000	/* Base address */
 #define PHYS_SDRAM_1_SIZE		0x40000000	/* Max 1 GB RAM */
-#define CONFIG_SYS_MALLOC_LEN		0x00400000	/* 4 MB for malloc */
-#define CONFIG_SYS_MEMTEST_START	0x40000000	/* Memtest start adr */
-#define CONFIG_SYS_MEMTEST_END		0x40400000	/* 4 MB RAM test */
 #define CONFIG_SYS_SDRAM_BASE		PHYS_SDRAM_1
-/* Point initial SP in SRAM so SPL can use it too. */
-
-#define CONFIG_SYS_INIT_RAM_ADDR	0x00000000
-#define CONFIG_SYS_INIT_RAM_SIZE	(128 * 1024)
-
-#define CONFIG_SYS_INIT_SP_OFFSET \
-	(CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
-#define CONFIG_SYS_INIT_SP_ADDR \
-	(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
-
-/*
- * We need to sacrifice first 4 bytes of RAM here to avoid triggering some
- * strange BUG in ROM corrupting first 4 bytes of RAM when loading U-Boot
- * binary. In case there was more of this mess, 0x100 bytes are skipped.
- */
-#define CONFIG_SYS_TEXT_BASE	0x40000100
 
+/* Environment */
+#define CONFIG_ENV_SIZE			(16 * 1024)
 #define CONFIG_ENV_OVERWRITE
-/* U-Boot general configurations */
-#define CONFIG_SYS_LONGHELP
-#define CONFIG_SYS_PROMPT	"MX28EVK U-Boot > "
-#define CONFIG_SYS_CBSIZE	1024		/* Console I/O buffer size */
-#define CONFIG_SYS_PBSIZE	\
-	(CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
-						/* Print buffer size */
-#define CONFIG_SYS_MAXARGS	32		/* Max number of command args */
-#define CONFIG_SYS_BARGSIZE	CONFIG_SYS_CBSIZE
-						/* Boot argument buffer size */
-#define CONFIG_VERSION_VARIABLE	/* U-BOOT version */
-#define CONFIG_AUTO_COMPLETE		/* Command auto complete */
-#define CONFIG_CMDLINE_EDITING		/* Command history etc */
-#define CONFIG_SYS_HUSH_PARSER
-
-/* Serial Driver */
-#define CONFIG_PL011_SERIAL
-#define CONFIG_PL011_CLOCK		24000000
-#define CONFIG_PL01x_PORTS		{ (void *)MXS_UARTDBG_BASE }
-#define CONFIG_CONS_INDEX		0
-#define CONFIG_BAUDRATE			115200	/* Default baud rate */
 
-/* DMA */
-#define CONFIG_APBH_DMA
-
-/* MMC Driver */
-#ifdef CONFIG_ENV_IS_IN_MMC
- #define CONFIG_ENV_OFFSET	(256 * 1024)
- #define CONFIG_ENV_SIZE	(16 * 1024)
- #define CONFIG_SYS_MMC_ENV_DEV 0
-#endif
-#define CONFIG_CMD_SAVEENV
-#ifdef	CONFIG_CMD_MMC
-#define CONFIG_MMC
-#define CONFIG_GENERIC_MMC
-#define CONFIG_BOUNCE_BUFFER
-#define CONFIG_MXS_MMC
+/* Environment is in MMC */
+#if defined(CONFIG_CMD_MMC) && defined(CONFIG_ENV_IS_IN_MMC)
+#define CONFIG_ENV_OFFSET		(256 * 1024)
+#define CONFIG_SYS_MMC_ENV_DEV		0
 #endif
 
-/* NAND Driver */
-#define CONFIG_ENV_SIZE			(16 * 1024)
-#ifdef CONFIG_CMD_NAND
-#define CONFIG_NAND_MXS
-#define CONFIG_SYS_MAX_NAND_DEVICE	1
-#define CONFIG_SYS_NAND_BASE		0x60000000
-#define CONFIG_SYS_NAND_5_ADDR_CYCLE
-
 /* Environment is in NAND */
-#ifdef CONFIG_ENV_IS_IN_NAND
+#if defined(CONFIG_CMD_NAND) && defined(CONFIG_ENV_IS_IN_NAND)
 #define CONFIG_ENV_SIZE_REDUND		CONFIG_ENV_SIZE
 #define CONFIG_ENV_SECT_SIZE		(128 * 1024)
 #define CONFIG_ENV_RANGE		(512 * 1024)
@@ -149,6 +76,21 @@
 		(CONFIG_ENV_OFFSET + CONFIG_ENV_RANGE)
 #endif
 
+/* Environemnt is in SPI flash */
+#if defined(CONFIG_CMD_SF) && defined(CONFIG_ENV_IS_IN_SPI_FLASH)
+#define CONFIG_SYS_REDUNDAND_ENVIRONMENT
+#define CONFIG_ENV_SIZE			0x1000		/* 4KB */
+#define CONFIG_ENV_OFFSET		0x40000		/* 256K */
+#define CONFIG_ENV_OFFSET_REDUND	(CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE)
+#define CONFIG_ENV_SECT_SIZE		0x1000
+#define CONFIG_ENV_SPI_CS		0
+#define CONFIG_ENV_SPI_BUS		2
+#define CONFIG_ENV_SPI_MAX_HZ		24000000
+#define CONFIG_ENV_SPI_MODE		SPI_MODE_0
+#endif
+
+/* UBI and NAND partitioning */
+#ifdef CONFIG_CMD_NAND
 #define CONFIG_CMD_UBI
 #define CONFIG_CMD_UBIFS
 #define CONFIG_CMD_MTDPARTS
@@ -168,13 +110,10 @@
 		"-(filesystem)"
 #endif
 
-/* Ethernet on SOC (FEC) */
+/* FEC Ethernet on SoC */
 #ifdef	CONFIG_CMD_NET
-#define CONFIG_NET_MULTI
-#define CONFIG_ETHPRIME	"FEC0"
 #define CONFIG_FEC_MXC
-#define CONFIG_MII
-#define CONFIG_FEC_XCV_TYPE	RMII
+#define CONFIG_NET_MULTI
 #define CONFIG_MX28_FEC_MAC_IN_OCOTP
 #endif
 
@@ -185,65 +124,35 @@
 
 /* USB */
 #ifdef	CONFIG_CMD_USB
-#define	CONFIG_USB_EHCI
-#define	CONFIG_USB_EHCI_MXS
 #define CONFIG_EHCI_MXS_PORT1
 #define CONFIG_USB_MAX_CONTROLLER_COUNT	1
-#define	CONFIG_EHCI_IS_TDI
 #define	CONFIG_USB_STORAGE
 #define	CONFIG_USB_HOST_ETHER
 #define	CONFIG_USB_ETHER_ASIX
 #define	CONFIG_USB_ETHER_SMSC95XX
 #endif
 
-/* I2C */
-#ifdef CONFIG_CMD_I2C
-#define CONFIG_I2C_MXS
-#define CONFIG_HARD_I2C
-#define CONFIG_SYS_I2C_SPEED	400000
-#endif
-
 /* SPI */
 #ifdef CONFIG_CMD_SPI
-#define CONFIG_HARD_SPI
-#define CONFIG_MXS_SPI
-#define CONFIG_SPI_HALF_DUPLEX
 #define CONFIG_DEFAULT_SPI_BUS		2
 #define CONFIG_DEFAULT_SPI_MODE		SPI_MODE_0
 
 /* SPI Flash */
 #ifdef CONFIG_CMD_SF
 #define CONFIG_SPI_FLASH
-#define CONFIG_SF_DEFAULT_BUS	2
-#define CONFIG_SF_DEFAULT_CS	0
+#define CONFIG_SF_DEFAULT_BUS		2
+#define CONFIG_SF_DEFAULT_CS		0
 /* this may vary and depends on the installed chip */
 #define CONFIG_SPI_FLASH_SST
 #define CONFIG_SF_DEFAULT_MODE		SPI_MODE_0
 #define CONFIG_SF_DEFAULT_SPEED		24000000
-
-/* (redundant) environemnt in SPI flash */
-#ifdef CONFIG_ENV_IS_IN_SPI_FLASH
-#define CONFIG_SYS_REDUNDAND_ENVIRONMENT
-#define CONFIG_ENV_SIZE			0x1000		/* 4KB */
-#define CONFIG_ENV_OFFSET		0x40000		/* 256K */
-#define CONFIG_ENV_OFFSET_REDUND	(CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE)
-#define CONFIG_ENV_SECT_SIZE		0x1000
-#define CONFIG_ENV_SPI_CS		0
-#define CONFIG_ENV_SPI_BUS		2
-#define CONFIG_ENV_SPI_MAX_HZ		24000000
-#define CONFIG_ENV_SPI_MODE		SPI_MODE_0
-#endif
 #endif
+
 #endif
 
 /* Framebuffer support */
 #ifdef CONFIG_VIDEO
-#define CONFIG_CFB_CONSOLE
-#define CONFIG_VIDEO_MXS
 #define CONFIG_VIDEO_LOGO
-#define CONFIG_VIDEO_SW_CURSOR
-#define CONFIG_VGA_AS_SINGLE_DEVICE
-#define CONFIG_SYS_CONSOLE_IS_IN_ENV
 #define CONFIG_SPLASH_SCREEN
 #define CONFIG_CMD_BMP
 #define CONFIG_BMP_16BPP
@@ -253,15 +162,12 @@
 #endif
 
 /* Boot Linux */
-#define CONFIG_CMDLINE_TAG
-#define CONFIG_SETUP_MEMORY_TAGS
 #define CONFIG_BOOTDELAY	1
-#define CONFIG_BOOTFILE	"uImage"
-#define CONFIG_LOADADDR	0x42000000
+#define CONFIG_BOOTFILE		"uImage"
+#define CONFIG_LOADADDR		0x42000000
 #define CONFIG_SYS_LOAD_ADDR	CONFIG_LOADADDR
-#define CONFIG_OF_LIBFDT
 
-/* Extra Environments */
+/* Extra Environment */
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	"update_nand_full_filename=u-boot.nand\0" \
 	"update_nand_firmware_filename=u-boot.sb\0"	\
@@ -372,4 +278,7 @@
 		"fi; " \
 	"else run netboot; fi"
 
-#endif /* __MX28EVK_CONFIG_H__ */
+/* The rest of the configuration is shared */
+#include <configs/mxs.h>
+
+#endif /* __CONFIGS_MX28EVK_H__ */
diff --git a/include/configs/mxs.h b/include/configs/mxs.h
new file mode 100644
index 0000000..a684166
--- /dev/null
+++ b/include/configs/mxs.h
@@ -0,0 +1,191 @@
+/*
+ * Copyright (C) 2013 Marek Vasut <marex@denx.de>
+ *
+ * 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; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#ifndef __CONFIGS_MXS_H__
+#define __CONFIGS_MXS_H__
+
+/*
+ * Includes
+ */
+
+#if defined(CONFIG_MX23) && defined(CONFIG_MX28)
+#error Select either CONFIG_MX23 or CONFIG_MX28 , never both!
+#elif !defined(CONFIG_MX23) && !defined(CONFIG_MX28)
+#error Select one of CONFIG_MX23 or CONFIG_MX28 !
+#endif
+
+#include <asm/arch/regs-base.h>
+
+#if defined(CONFIG_MX23)
+#include <asm/arch/iomux-mx23.h>
+#elif defined(CONFIG_MX28)
+#include <asm/arch/iomux-mx28.h>
+#endif
+
+/*
+ * CPU specifics
+ */
+
+/* Ticks per second */
+#define CONFIG_SYS_HZ		1000
+
+/* MXS uses FDT */
+#define CONFIG_OF_LIBFDT
+
+/* Startup hooks */
+#define CONFIG_BOARD_EARLY_INIT_F
+#define CONFIG_ARCH_MISC_INIT
+
+/* SPL */
+#define CONFIG_SPL
+#define CONFIG_SPL_NO_CPU_SUPPORT_CODE
+#define CONFIG_SPL_START_S_PATH	"arch/arm/cpu/arm926ejs/mxs"
+#define CONFIG_SPL_LDSCRIPT	"arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds"
+#define CONFIG_SPL_LIBCOMMON_SUPPORT
+#define CONFIG_SPL_LIBGENERIC_SUPPORT
+#define CONFIG_SPL_GPIO_SUPPORT
+
+/* Memory sizes */
+#define CONFIG_SYS_MALLOC_LEN		0x00400000	/* 4 MB for malloc */
+#define CONFIG_SYS_GBL_DATA_SIZE	128		/* Initial data */
+#define CONFIG_SYS_MEMTEST_START	0x40000000	/* Memtest start adr */
+#define CONFIG_SYS_MEMTEST_END		0x40400000	/* 4 MB RAM test */
+
+/* OCRAM at 0x0 ; 32kB on MX23 ; 128kB on MX28 */
+#define CONFIG_SYS_INIT_RAM_ADDR	0x00000000
+#if defined(CONFIG_MX23)
+#define CONFIG_SYS_INIT_RAM_SIZE	(32 * 1024)
+#elif defined(CONFIG_MX28)
+#define CONFIG_SYS_INIT_RAM_SIZE	(128 * 1024)
+#endif
+
+/* Point initial SP in SRAM so SPL can use it too. */
+#define CONFIG_SYS_INIT_SP_OFFSET \
+	(CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR \
+	(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
+
+/*
+ * We need to sacrifice first 4 bytes of RAM here to avoid triggering some
+ * strange BUG in ROM corrupting first 4 bytes of RAM when loading U-Boot
+ * binary. In case there was more of this mess, 0x100 bytes are skipped.
+ */
+#define CONFIG_SYS_TEXT_BASE		0x40000100
+
+/* U-Boot general configuration */
+#define CONFIG_SYS_LONGHELP
+#ifndef CONFIG_SYS_PROMPT
+#define CONFIG_SYS_PROMPT	"=> "
+#endif
+#define CONFIG_SYS_CBSIZE	1024		/* Console I/O buffer size */
+#define CONFIG_SYS_PBSIZE	\
+	(CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
+						/* Print buffer size */
+#define CONFIG_SYS_MAXARGS	32		/* Max number of command args */
+#define CONFIG_SYS_BARGSIZE	CONFIG_SYS_CBSIZE
+						/* Boot argument buffer size */
+#define CONFIG_VERSION_VARIABLE			/* U-BOOT version */
+#define CONFIG_AUTO_COMPLETE			/* Command auto complete */
+#define CONFIG_CMDLINE_EDITING			/* Command history etc */
+#define CONFIG_SYS_HUSH_PARSER
+#define CONFIG_SYS_PROMPT_HUSH_PS2	"> "
+
+/* Booting Linux */
+#define CONFIG_CMDLINE_TAG
+#define CONFIG_SETUP_MEMORY_TAGS
+
+/*
+ * Drivers
+ */
+
+/* APBH DMA */
+#define CONFIG_APBH_DMA
+
+/* GPIO */
+#define CONFIG_MXS_GPIO
+
+/* DUART Serial Driver */
+#define CONFIG_PL011_SERIAL
+#define CONFIG_PL011_CLOCK		24000000
+#define CONFIG_PL01x_PORTS		{ (void *)MXS_UARTDBG_BASE }
+#define CONFIG_CONS_INDEX		0
+/* Default baudrate can be overriden by board! */
+#ifndef CONFIG_BAUDRATE
+#define CONFIG_BAUDRATE			115200
+#endif
+
+/* FEC Ethernet on SoC */
+#ifdef CONFIG_FEC_MXC
+#define CONFIG_MII
+#ifndef CONFIG_ETHPRIME
+#define CONFIG_ETHPRIME			"FEC0"
+#endif
+#ifndef CONFIG_FEC_XCV_TYPE
+#define CONFIG_FEC_XCV_TYPE		RMII
+#endif
+#endif
+
+/* I2C */
+#ifdef CONFIG_CMD_I2C
+#define CONFIG_I2C_MXS
+#define CONFIG_HARD_I2C
+#ifndef CONFIG_SYS_I2C_SPEED
+#define CONFIG_SYS_I2C_SPEED		400000
+#endif
+#endif
+
+/* LCD */
+#ifdef CONFIG_VIDEO
+#define CONFIG_CFB_CONSOLE
+#define CONFIG_VIDEO_MXS
+#define CONFIG_VIDEO_SW_CURSOR
+#define CONFIG_VGA_AS_SINGLE_DEVICE
+#define CONFIG_SYS_CONSOLE_IS_IN_ENV
+#endif
+
+/* MMC */
+#ifdef CONFIG_CMD_MMC
+#define CONFIG_MMC
+#define CONFIG_GENERIC_MMC
+#define CONFIG_BOUNCE_BUFFER
+#define CONFIG_MXS_MMC
+#endif
+
+/* NAND */
+#ifdef CONFIG_CMD_NAND
+#define CONFIG_NAND_MXS
+#define CONFIG_SYS_MAX_NAND_DEVICE	1
+#define CONFIG_SYS_NAND_BASE		0x60000000
+#define CONFIG_SYS_NAND_5_ADDR_CYCLE
+#endif
+
+/* SPI */
+#ifdef CONFIG_CMD_SPI
+#define CONFIG_HARD_SPI
+#define CONFIG_MXS_SPI
+#define CONFIG_SPI_HALF_DUPLEX
+#endif
+
+/* USB */
+#ifdef CONFIG_CMD_USB
+#define CONFIG_USB_EHCI
+#define CONFIG_USB_EHCI_MXS
+#define CONFIG_EHCI_IS_TDI
+#endif
+
+#endif	/* __CONFIGS_MXS_H__ */
diff --git a/include/configs/sc_sps_1.h b/include/configs/sc_sps_1.h
index 349497f..b7b46b4 100644
--- a/include/configs/sc_sps_1.h
+++ b/include/configs/sc_sps_1.h
@@ -19,48 +19,16 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  * MA 02111-1307 USA
  */
-#ifndef __SC_SPS_1_H__
-#define __SC_SPS_1_H__
+#ifndef __CONFIGS_SC_SPS_1_H__
+#define __CONFIGS_SC_SPS_1_H__
 
-/*
- * SoC configurations
- */
+/* System configuration */
 #define CONFIG_MX28				/* i.MX28 SoC */
-#define CONFIG_MXS_GPIO				/* GPIO control */
-#define CONFIG_SYS_HZ		1000		/* Ticks per second */
-
-/*
- * Define SC_SPS_1 machine type by hand until it lands in mach-types
- */
 #define MACH_TYPE_SC_SPS_1	4172
-
 #define CONFIG_MACH_TYPE	MACH_TYPE_SC_SPS_1
 
-#include <asm/arch/regs-base.h>
-
+/* U-Boot Commands */
 #define CONFIG_SYS_NO_FLASH
-#define CONFIG_BOARD_EARLY_INIT_F
-#define CONFIG_ARCH_CPU_INIT
-#define CONFIG_ARCH_MISC_INIT
-
-#define CONFIG_ENV_IS_IN_MMC
-
-#define CONFIG_OF_LIBFDT
-
-/*
- * SPL
- */
-#define CONFIG_SPL
-#define CONFIG_SPL_NO_CPU_SUPPORT_CODE
-#define CONFIG_SPL_START_S_PATH		"arch/arm/cpu/arm926ejs/mxs"
-#define CONFIG_SPL_LDSCRIPT	"arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds"
-#define CONFIG_SPL_LIBCOMMON_SUPPORT
-#define CONFIG_SPL_LIBGENERIC_SUPPORT
-#define CONFIG_SPL_GPIO_SUPPORT
-
-/*
- * U-Boot Commands
- */
 #include <config_cmd_default.h>
 #define CONFIG_DISPLAY_CPUINFO
 #define CONFIG_DOS_PARTITION
@@ -78,119 +46,47 @@
 #define CONFIG_CMD_SETEXPR
 #define CONFIG_CMD_USB
 
-/*
- * Memory configurations
- */
+/* Memory configuration */
 #define CONFIG_NR_DRAM_BANKS		1		/* 1 bank of DRAM */
 #define PHYS_SDRAM_1			0x40000000	/* Base address */
 #define PHYS_SDRAM_1_SIZE		0x40000000	/* Max 1 GB RAM */
-#define CONFIG_STACKSIZE		0x00010000	/* 128 KB stack */
-#define CONFIG_SYS_MALLOC_LEN		0x00400000	/* 4 MB for malloc */
-#define CONFIG_SYS_GBL_DATA_SIZE	128		/* Initial data */
-#define CONFIG_SYS_MEMTEST_START	0x40000000	/* Memtest start adr */
-#define CONFIG_SYS_MEMTEST_END		0x40400000	/* 4 MB RAM test */
 #define CONFIG_SYS_SDRAM_BASE		PHYS_SDRAM_1
 
-/* Point initial SP in SRAM so SPL can use it too. */
-#define CONFIG_SYS_INIT_RAM_ADDR	0x00000000
-#define CONFIG_SYS_INIT_RAM_SIZE	(128 * 1024)
-
-#define CONFIG_SYS_INIT_SP_OFFSET \
-	(CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
-#define CONFIG_SYS_INIT_SP_ADDR \
-	(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
-/*
- * We need to sacrifice first 4 bytes of RAM here to avoid triggering some
- * strange BUG in ROM corrupting first 4 bytes of RAM when loading U-Boot
- * binary. In case there was more of this mess, 0x100 bytes are skipped.
- */
-#define CONFIG_SYS_TEXT_BASE		0x40000100
-
-/*
- * U-Boot general configurations
- */
-#define CONFIG_SYS_LONGHELP
-#define CONFIG_SYS_PROMPT	"=> "
-#define CONFIG_SYS_CBSIZE	1024		/* Console I/O buffer size */
-#define CONFIG_SYS_PBSIZE	\
-	(CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
-						/* Print buffer size */
-#define CONFIG_SYS_MAXARGS	32		/* Max number of command args */
-#define CONFIG_SYS_BARGSIZE	CONFIG_SYS_CBSIZE
-						/* Boot argument buffer size */
-#define CONFIG_VERSION_VARIABLE			/* U-BOOT version */
-#define CONFIG_AUTO_COMPLETE			/* Command auto complete */
-#define CONFIG_CMDLINE_EDITING			/* Command history etc */
-#define CONFIG_SYS_HUSH_PARSER
-#define CONFIG_SYS_PROMPT_HUSH_PS2	"> "
-
-/*
- * Serial Driver
- */
-#define CONFIG_PL011_SERIAL
-#define CONFIG_PL011_CLOCK		24000000
-#define CONFIG_PL01x_PORTS		{ (void *)MXS_UARTDBG_BASE }
-#define CONFIG_CONS_INDEX		0
-#define CONFIG_BAUDRATE			115200	/* Default baud rate */
-#define CONFIG_SYS_BAUDRATE_TABLE	{ 9600, 19200, 38400, 57600, 115200 }
-
-/*
- * MMC Driver
- */
-#ifdef CONFIG_CMD_MMC
-#define CONFIG_APBH_DMA
-#define CONFIG_MMC
-#define CONFIG_BOUNCE_BUFFER
-#define CONFIG_GENERIC_MMC
-#define CONFIG_MXS_MMC
-#endif
+/* Environment */
 #define CONFIG_ENV_SIZE			(16 * 1024)
-#ifdef CONFIG_ENV_IS_IN_MMC
+#define CONFIG_ENV_IS_IN_MMC
+
+/* Environment is in MMC */
+#if defined(CONFIG_CMD_MMC) && defined(CONFIG_ENV_IS_IN_MMC)
 #define CONFIG_ENV_OFFSET		(256 * 1024)
 #define CONFIG_SYS_MMC_ENV_DEV		0
 #else
 #define CONFIG_ENV_IS_NOWHERE
 #endif
 
-/*
- * Ethernet on SOC (FEC)
- */
+/* FEC Ethernet on SoC */
 #ifdef CONFIG_CMD_NET
-#define CONFIG_ETHPRIME			"FEC0"
 #define CONFIG_FEC_MXC
-#define CONFIG_MII
-#define CONFIG_FEC_XCV_TYPE		RMII
 #define CONFIG_PHYLIB
 #define CONFIG_PHY_SMSC
 #endif
 
-/*
- * USB
- */
+/* USB */
 #ifdef CONFIG_CMD_USB
-#define CONFIG_USB_EHCI
-#define CONFIG_USB_EHCI_MXS
 #define CONFIG_EHCI_MXS_PORT0
 #define CONFIG_USB_MAX_CONTROLLER_COUNT	1
-#define CONFIG_EHCI_IS_TDI
 #define CONFIG_USB_STORAGE
 #endif
 
-/*
- * Boot Linux
- */
-#define CONFIG_CMDLINE_TAG
-#define CONFIG_SETUP_MEMORY_TAGS
+/* Booting Linux */
 #define CONFIG_BOOTDELAY	3
 #define CONFIG_BOOTFILE		"uImage"
 #define CONFIG_BOOTARGS		"console=ttyAMA0,115200"
-#define CONFIG_BOOTCOMMAND	"bootm "
+#define CONFIG_BOOTCOMMAND	"bootm"
 #define CONFIG_LOADADDR		0x42000000
 #define CONFIG_SYS_LOAD_ADDR	CONFIG_LOADADDR
 
-/*
- * Extra Environments
- */
+/* Extra Environment */
 #define CONFIG_EXTRA_ENV_SETTINGS					\
 	"update_sd_firmware_filename=u-boot.sd\0"			\
 	"update_sd_firmware="		/* Update the SD firmware partition */ \
@@ -202,4 +98,7 @@
 		"fi ; "							\
 		"fi\0"
 
-#endif /* __SC_SPS_1_H__ */
+/* The rest of the configuration is shared */
+#include <configs/mxs.h>
+
+#endif /* __CONFIGS_SC_SPS_1_H__ */