u-boot2013.10引导linux3.10.30记录

首先确定real210.h头文件的配置是否正确，我的完整配置如下：

/*
 * (C) Copyright 2009 Samsung Electronics
 * Minkyu Kang <[email protected]>
 * HeungJun Kim <[email protected]>
 * Inki Dae <[email protected]>
 *
 * Configuation settings for the SAMSUNG SMDKC100 board.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#ifndef __CONFIG_H
#define __CONFIG_H

//#define DEBUG	/*调试宏定义*/
//#define CONFIG_SKIP_LOWLEVEL_INIT  /*用于调试*/
/*
 * High Level Configuration Options
 * (easy to change)
 */
#define CONFIG_SAMSUNG		1	/* in a SAMSUNG core */
#define CONFIG_S5P		1	/* which is in a S5P Family */
#define CONFIG_S5PC100		1	/* which is in a S5PC100 */
#define CONFIG_SMDKC100		1	/* working with SMDKC100 */
#define CONFIG_S5PC11X		1	/* 打开nand_cp功能 */
#include <asm/arch/cpu.h>		/* get chip and board defs */

#define CONFIG_ARCH_CPU_INIT

#define CONFIG_DISPLAY_CPUINFO
#define CONFIG_DISPLAY_BOARDINFO

/* input clock of PLL: SMDKC100 has 12MHz input clock */
#define CONFIG_SYS_CLK_FREQ		24000000

/* DRAM Base */
#define CONFIG_SYS_SDRAM_BASE		0x30000000

/* Text Base */
#define CONFIG_SYS_TEXT_BASE		0x4ff00000  /*原为4ff00000，调试的时候使用3ff00000*/

#define CONFIG_SETUP_MEMORY_TAGS
#define CONFIG_CMDLINE_TAG
#define CONFIG_INITRD_TAG
#define CONFIG_CMDLINE_EDITING

/*
 * Size of malloc() pool
 * 1MB = 0x100000, 0x100000 = 1024 * 1024
 */
#define CONFIG_SYS_MALLOC_LEN		(CONFIG_ENV_SIZE + (1 << 20))
/*
 * select serial console configuration
 */
#define CONFIG_SERIAL2			1	/* use SERIAL 2 on REAL210 */

/* PWM */
#define CONFIG_PWM			1

/* allow to overwrite serial and ethaddr */
#define CONFIG_ENV_OVERWRITE
#define CONFIG_BAUDRATE			115200

/***********************************************************
 * Command definition
 ***********************************************************/
#include <config_cmd_default.h>

//#define CONFIG_CMD_FLASH	/*用户修改*/
#undef  CONFIG_CMD_IMLS
//#define CONFIG_CMD_NAND		/*用户修改*/

#define CONFIG_CMD_CACHE
#define CONFIG_CMD_REGINFO
//#define CONFIG_CMD_ONENAND
#define CONFIG_CMD_ELF
#define CONFIG_CMD_FAT
#define CONFIG_CMD_MTDPARTS
//#define CONFIG_CMD_EXT2		/*用户添加*/

#define CONFIG_BOOTDELAY	3

#define CONFIG_ZERO_BOOTDELAY_CHECK

#define CONFIG_MTD_DEVICE
#define CONFIG_MTD_PARTITIONS

//#define CONFIG_ENV_OVERWRITE
				/*",512k@0x80000(params)"\*/
#define MTDIDS_DEFAULT		"nand0=s3c-nand"
#define MTDPARTS_DEFAULT	"mtdparts=s3c-nand:1m(bootloader)"\
				",5m@0x100000(kernel)"\
				",-(root)"

#define NORMAL_MTDPARTS_DEFAULT MTDPARTS_DEFAULT

/*#define CONFIG_BOOTCOMMAND	"run ubifsboot"*/

#define CONFIG_RAMDISK_BOOT	"root=/dev/ram0 rw rootfstype=ext2" \
				" console=ttySAC2,115200n8" \
				" mem=512M"

#define CONFIG_COMMON_BOOT	"console=ttySAC2,115200n8" \
				" mem=512M " \
				" " MTDPARTS_DEFAULT

/*#define CONFIG_BOOTARGS	"root=/dev/mtdblock5 ubi.mtd=4" \
			" rootfstype=cramfs " CONFIG_COMMON_BOOT*/

#define CONFIG_UPDATEB	"updateb=nand erase 0x0 0x80000;" \
			" nand write 0x40008000 0x0 0x80000\0"
#if 0
#define CONFIG_ENV_OVERWRITE
#define CONFIG_EXTRA_ENV_SETTINGS					\
	CONFIG_UPDATEB \
	"updatek=" \
		"onenand erase 0x60000 0x300000;" \
		"onenand write 0x31008000 0x60000 0x300000\0" \
	"updateu=" \
		"onenand erase block 147-4095;" \
		"onenand write 0x32000000 0x1260000 0x8C0000\0" \
	"bootk=" \
		"onenand read 0x30007FC0 0x60000 0x300000;" \
		"bootm 0x30007FC0\0" \
	"flashboot=" \
		"set bootargs root=/dev/mtdblock${bootblock} " \
		"rootfstype=${rootfstype} " \
		"ubi.mtd=${ubiblock} ${opts} " CONFIG_COMMON_BOOT ";" \
		"run bootk\0" \
	"ubifsboot=" \
		"set bootargs root=ubi0!rootfs rootfstype=ubifs " \
		" ubi.mtd=${ubiblock} ${opts} " CONFIG_COMMON_BOOT "; " \
		"run bootk\0" \
	"boottrace=setenv opts initcall_debug; run bootcmd\0" \
	"android=" \
		"set bootargs root=ubi0!ramdisk ubi.mtd=${ubiblock} " \
		"rootfstype=ubifs init=/init.sh " CONFIG_COMMON_BOOT "; " \
		"run bootk\0" \
	"nfsboot=" \
		"set bootargs root=/dev/nfs ubi.mtd=${ubiblock} " \
		"nfsroot=${nfsroot},nolock " \
		"ip=${ipaddr}:${serverip}:${gatewayip}:" \
		"${netmask}:nowplus:usb0:off " CONFIG_COMMON_BOOT "; " \
		"run bootk\0" \
	"ramboot=" \
		"set bootargs " CONFIG_RAMDISK_BOOT \
		" initrd=0x33000000,8M ramdisk=8192\0" \
	"rootfstype=cramfs\0" \
	"mtdparts=" MTDPARTS_DEFAULT "\0" \
	"meminfo=mem=512M\0" \
	"nfsroot=/nfsroot/arm\0" \
	"bootblock=5\0" \
	"ubiblock=4\0" \
	"ubi=enabled"
#endif
/*
 * Miscellaneous configurable options
 */
#define CONFIG_SYS_LONGHELP		/* undef to save memory */
#define CONFIG_SYS_HUSH_PARSER		/* use "hush" command parser	*/
#define CONFIG_SYS_PROMPT		"REAL210 # "
#define CONFIG_SYS_CBSIZE	256	/* Console I/O Buffer Size */
#define CONFIG_SYS_PBSIZE	384	/* Print Buffer Size */
#define CONFIG_SYS_MAXARGS	16	/* max number of command args */
/* Boot Argument Buffer Size */
#define CONFIG_SYS_BARGSIZE		CONFIG_SYS_CBSIZE
/* memtest works on */
#define CONFIG_SYS_MEMTEST_START	CONFIG_SYS_SDRAM_BASE
#define CONFIG_SYS_MEMTEST_END		(CONFIG_SYS_SDRAM_BASE + 0x5e00000)
#define CONFIG_SYS_LOAD_ADDR		CONFIG_SYS_SDRAM_BASE

#define CONFIG_SYS_HZ			1000

/* SMDKC100 has 2 banks of DRAM */
#define CONFIG_NR_DRAM_BANKS    2          /* we have 1 bank of DRAM */
#define SDRAM_BANK_SIZE         0x10000000    /* 256 MB */
#define PHYS_SDRAM_1            CONFIG_SYS_SDRAM_BASE /* SDRAM Bank #1 */
#define PHYS_SDRAM_1_SIZE       SDRAM_BANK_SIZE
#define PHYS_SDRAM_2            (CONFIG_SYS_SDRAM_BASE + SDRAM_BANK_SIZE) /* SDRAM Bank #2 */
#define PHYS_SDRAM_2_SIZE       SDRAM_BANK_SIZE

#define CONFIG_SYS_MONITOR_BASE	0x00000000

/*-----------------------------------------------------------------------
 * FLASH and environment organization
 */
#define CONFIG_SYS_NO_FLASH		1

#define CONFIG_SYS_MONITOR_LEN		(256 << 10)	/* 256 KiB */
#define CONFIG_IDENT_STRING		" for REAL210"

#if !defined(CONFIG_NAND_SPL) && (CONFIG_SYS_TEXT_BASE >= 0xc0000000)
#define CONFIG_ENABLE_MMU
#endif

#ifdef CONFIG_ENABLE_MMU
#define CONFIG_SYS_MAPPED_RAM_BASE	0xc0000000
#else
#define CONFIG_SYS_MAPPED_RAM_BASE	CONFIG_SYS_SDRAM_BASE
#endif

/*-----------------------------------------------------------------------
 * Boot configuration
 */
#if 0
//#define CONFIG_ENV_IS_IN_ONENAND	1
#define CONFIG_ENV_IS_NOWHERE		1
#define CONFIG_ENV_SIZE			(128 << 10)	/* 128KiB, 0x20000 */
#define CONFIG_ENV_ADDR			(256 << 10)	/* 256KiB, 0x40000 */
#define CONFIG_ENV_OFFSET		(256 << 10)	/* 256KiB, 0x40000 */

#define CONFIG_USE_ONENAND_BOARD_INIT
#define CONFIG_SAMSUNG_ONENAND		1
#define CONFIG_SYS_ONENAND_BASE		0xE7100000
#endif

#define CONFIG_ENV_IS_IN_NAND		1		/* 打开该宏，环境变量会保存在nand，同时CONFIG_ENV_IS_IN_MMC和CONFIG_SYS_MMC_ENV_DEV需要注释掉*/
//#define CONFIG_ENV_IS_IN_MMC		1		/* 打开该宏，环境变量会保存在mmc，同时CONFIG_SYS_MMC_ENV_DEV需要打开并注释掉CONFIG_ENV_IS_IN_NAND*/
//#define CONFIG_SYS_MMC_ENV_DEV		0

#define CONFIG_CMD_SAVEENV				/* 开启环境变量操作命令*/
#define CONFIG_ENV_SIZE			0x40000		/* 环境变量的大小 */
#define CONFIG_ENV_ADDR			0		/* 该定义不清楚什么作用，测试结果它的值没有影响环境变量的存储地址 */
#define CONFIG_ENV_OFFSET		0x80000		/* 环境变量nand相对基址的偏移量，u-boot的大小一般在500KB以内，所以环境变量设置在512KB到1MB之间即可 */

#define CONFIG_DOS_PARTITION		1

//#define CONFIG_SYS_INIT_SP_ADDR	(CONFIG_SYS_LOAD_ADDR - 0x1000000)
#define CONFIG_SYS_INIT_SP_ADDR	(CONFIG_SYS_LOAD_ADDR + 0x10000000)
/*
 * Ethernet Contoller driver
 */
#if 0
#define CONFIG_CMD_NET

#ifdef CONFIG_CMD_NET
#define CONFIG_SMC911X         1       /* we have a SMC9115 on-board   */
#define CONFIG_SMC911X_16_BIT  1       /* SMC911X_16_BIT Mode          */
#define CONFIG_SMC911X_BASE    0x88000300      /* SMC911X Drive Base   */
#define CONFIG_ENV_SROM_BANK   3       /* Select SROM Bank-3 for Ethernet*/
#endif /* CONFIG_CMD_NET */
#endif
/*下面为添加部分*/
#define PRINTF_LOGO				/*打开该宏可以打印logo，位置在板级目录real210.c*/

#define CONFIG_MCP_SINGLE	1		/*初始化内存使用*/
#define CONFIG_EVT1		1		/* EVT1  */
#define CONFIG_BL1_CHECKSUM	1		/* 在往nand中写入u-boot时，前8K需要有校验和，因为在bl0阶段会对它进行校验，由该宏控制，代码在nand_base.c的nand_write中 */

#define CONFIG_UBOOT_BASE	CONFIG_SYS_TEXT_BASE	/*0x4ff00000*/
#define CONFIG_PHY_UBOOT_BASE	CONFIG_SYS_TEXT_BASE	/*CONFIG_SYS_SDRAM_BASE + 0x3e00000*/

#define BOOT_ONENAND		0x1
#define BOOT_NAND		0x2
#define BOOT_MMCSD		0x3
#define BOOT_NOR		0x4
#define BOOT_SEC_DEV		0x5

#undef CONFIG_MEMORY_UPPER_CODE

#undef CONFIG_USE_IRQ				/* we don't need IRQ/FIQ stuff */
/* total memory required by uboot */
#define CONFIG_UBOOT_SIZE		(1*1024*1024)	/* Uboot的大小设置为1MB，1MB空间还包含环境变量*/
/*时钟部分*/
/* CLK_DIV0 */
#define APLL_RATIO	0
#define A2M_RATIO	4
#define HCLK_MSYS_RATIO	8
#define PCLK_MSYS_RATIO	12
#define HCLK_DSYS_RATIO	16
#define PCLK_DSYS_RATIO 20
#define HCLK_PSYS_RATIO	24
#define PCLK_PSYS_RATIO 28

#define APLL_MDIV       0x7d
#define APLL_PDIV       0x3
#define APLL_SDIV       0x1

#define MPLL_MDIV	0x29b
#define MPLL_PDIV	0xc
#define MPLL_SDIV	0x1

#define EPLL_MDIV	0x60
#define EPLL_PDIV	0x6
#define EPLL_SDIV	0x2

#define VPLL_MDIV	0x6c
#define VPLL_PDIV	0x6
#define VPLL_SDIV	0x3

#define set_pll(mdiv, pdiv, sdiv)	(1<<31 | mdiv<<16 | pdiv<<8 | sdiv)

#define APLL_VAL	set_pll(APLL_MDIV,APLL_PDIV,APLL_SDIV)
#define MPLL_VAL	set_pll(MPLL_MDIV,MPLL_PDIV,MPLL_SDIV)
#define EPLL_VAL	set_pll(EPLL_MDIV,EPLL_PDIV,EPLL_SDIV)
#define VPLL_VAL	set_pll(VPLL_MDIV,VPLL_PDIV,VPLL_SDIV)

#define APLL_LOCKTIME_VAL	0x2cf
#define CLK_DIV0_MASK		0x7fffffff
#define CLK_DIV0_VAL    ((0<<APLL_RATIO)|(4<<A2M_RATIO)|(4<<HCLK_MSYS_RATIO)|(1<<PCLK_MSYS_RATIO)\
			|(3<<HCLK_DSYS_RATIO)|(1<<PCLK_DSYS_RATIO)|(4<<HCLK_PSYS_RATIO)|(1<<PCLK_PSYS_RATIO))
#if defined(CONFIG_EVT1)
/* Set AFC value */
#define AFC_ON		0x00000000
#define AFC_OFF		0x10000010
#endif
/*串口部分*/
#define UART_UBRDIV_VAL		34
#define UART_UDIVSLOT_VAL	0xDDDD

/*下面是用户添加的对内存配置的定义*/
#define	DMC0_MEMCONTROL		0x00202400
#define DMC0_MEMCONFIG_0	0x30F01323	// MemConfig0	256MB config, 8 banks,Mapping Method[12:15]0:linear, 1:linterleaved, 2:Mixed
#define DMC0_MEMCONFIG_1	0x40F01323	// MemConfig1
#define DMC0_TIMINGA_REF	0x00000618	// TimingAref	7.8us*133MHz=1038(0x40E), 100MHz=780(0x30C), 20MHz=156(0x9C), 10MHz=78(0x4E)
#define DMC0_TIMING_ROW		0x28233287	// TimingRow	for @200MHz
#define DMC0_TIMING_DATA	0x23240304	// TimingData	CL=3
#define	DMC0_TIMING_PWR		0x09C80232	// TimingPower

#define	DMC1_MEMCONTROL		0x00202400	// MemControl	BL=4, 2 chip, DDR2 type, dynamic self refresh, force precharge, dynamic power down off
#define DMC1_MEMCONFIG_0	0x40F01323	// MemConfig0	512MB config, 8 banks,Mapping Method[12:15]0:linear, 1:linterleaved, 2:Mixed
#define DMC1_MEMCONFIG_1	0x40E01323	// MemConfig1 在real210中该寄存器配置与否都行，因为本硬件不使用该部分功能
#define DMC1_TIMINGA_REF	0x00000618	// TimingAref	7.8us*133MHz=1038(0x40E), 100MHz=780(0x30C), 20MHz=156(0x9C), 10MHz=78(0x4
#define DMC1_TIMING_ROW		0x28233289	// TimingRow	for @200MHz
#define DMC1_TIMING_DATA	0x23240304	// TimingData	CL=3
#define	DMC1_TIMING_PWR		0x08280232	// TimingPower

/*
 * Ethernet Contoller driver 网络配置
 */

#define CONFIG_DM9000    
#define CONFIG_DRIVER_DM9000    1
#define CONFIG_DM9000_BASE      (0x88000300)
#define CONFIG_DM9000_USE_16BIT
#define DM9000_IO               CONFIG_DM9000_BASE
#define DM9000_DATA             (CONFIG_DM9000_BASE+0x4) 
#define DM9000_16BIT_DATA

#define CONFIG_CMD_PING

//#define CONFIG_BOOTARGS    	"console=ttySAC2,115200 noinitrd root=/dev/mtdblock2 init=/linuxrc" 
#define CONFIG_ETHADDR		00:22:12:34:56:90
#define CONFIG_NETMASK          255.255.255.0
#define CONFIG_IPADDR		192.168.1.20
#define CONFIG_SERVERIP		192.168.1.22
#define CONFIG_GATEWAYIP	192.168.1.1

/*auto complete command*/
#define CONFIG_CMDLINE_EDITING
#define CONFIG_AUTO_COMPLETE    /*实现命令补全功能*/
#define CONFIG_SYS_HUSH_PARSER

/*nand driver*/
/* nand copy size from nand to DRAM.*/
#define	COPY_BL2_SIZE		0x80000

#define CONFIG_CMD_NAND 
#define CONFIG_SYS_MAX_NAND_DEVICE 	1 
#define CONFIG_SYS_NAND_MAX_CHIPS 	1
#define CONFIG_SYS_NAND_BASE 0xB0E00000
#define CONFIG_NAND_S5PV210

#define NAND_DISABLE_CE()	(NFCONT_REG |= (1 << 1))
#define NAND_ENABLE_CE()	(NFCONT_REG &= ~(1 << 1))

#define CONFIG_S5PC11X_NAND_HWECC/*开启硬件ecc校验*/
#define CONFIG_NAND_BL1_8BIT_ECC/*使用8位ecc硬件校验*/
//#define CONFIG_SYS_NAND_ONFI_DETECTION /*检测ONFI*/
//#define CONFIG_MTD_NAND_VERIFY_WRITE/*nand写入数据校验*/
//#define CONFIG_MTD_DEBUG/*调试mtd*/
//#define CONFIG_MTD_DEBUG_VERBOSE 3


/*SD driver*/
#define CONFIG_GENERIC_MMC
#define CONFIG_MMC
#define CONFIG_SDHCI
#define CONFIG_S5P_SDHCI
#define CONFIG_CMD_MMC


#define CONFIG_CMD_EXT2
#define CONFIG_CMD_FAT


//#define CONFIG_BOOTCOMMAND	"nand read 30008000 100000 400000; bootm 30008000"
#define CONFIG_BOOTCOMMAND	"tftp 30008000 /210_old/uImage;bootm 30008000"
#define CONFIG_BOOTARGS    	"console=ttySAC2,115200 noinitrd root=/dev/mtdblock2 init=/linuxrc" 


#define CONFIG_MACH_TYPE	MACH_TYPE_SMDKV210 /* 值是2456 */
#define CONFIG_MTD_NAND_YAFFS2   1
//#define CONFIG_GZIP
//#define CONFIG_SILENT_CONSOLE
#endif	/* __CONF

配置里面涉及的重要配置如下：

/* input clock of PLL: SMDKC100 has 12MHz input clock */
#define CONFIG_SYS_CLK_FREQ		24000000

/* DRAM Base */
#define CONFIG_SYS_SDRAM_BASE		0x30000000

/* Text Base */
#define CONFIG_SYS_TEXT_BASE		0x4ff00000  /*原为4ff00000，调试的时候使用3ff00000*/

#define CONFIG_SETUP_MEMORY_TAGS
#define CONFIG_CMDLINE_TAG
#define CONFIG_INITRD_TAG
#define CONFIG_CMDLINE_EDITING

#define CONFIG_MTD_DEVICE
#define CONFIG_MTD_PARTITIONS

//#define CONFIG_ENV_OVERWRITE
				/*",512k@0x80000(params)"\*/
#define MTDIDS_DEFAULT		"nand0=s3c-nand"
#define MTDPARTS_DEFAULT	"mtdparts=s3c-nand:1m(bootloader)"\
				",5m@0x100000(kernel)"\
				",-(root)"

#define NORMAL_MTDPARTS_DEFAULT MTDPARTS_DEFAULT

#define CONFIG_BOOTCOMMAND	"tftp 30008000 /210_old/uImage;bootm 30008000"
#define CONFIG_BOOTARGS    	"console=ttySAC2,115200 noinitrd root=/dev/mtdblock2 init=/linuxrc" 


#define CONFIG_MACH_TYPE	MACH_TYPE_SMDKV210 /* 值是2456 */
#define CONFIG_MTD_NAND_YAFFS2   1

另外还需要修改两个文件，一个是common/cmd_bootm.c，用gedit打开该文件搜索images.ep = image_get_ep(&images.legacy_hdr_os_copy)，然后再后面增加+0x40，也就是修改成images.ep = image_get_ep(&images.legacy_hdr_os_copy)+0x40，增加+0x40的原因是uImage头是64个字节也就是0x40，真正的启动地址是在uImage的基地址加上0x40的偏移量，如果不设置这个，linux是无法引导的。当然如果使用zImage的话就不需要了，但是还得删除u-boot检查uImage头的功能才行，这个后边再做记录。

另一个要修改的就是板级文件了，得确定传递到内核的机器码是否与内核的一致。查询机器码我就不记录了，百度一下即可。内核的机器码被设置为SMDKV210的，也就是0x998，那么在u-boot中查找SMDKV210的机器码位置在/arch/arm/include/asm/mach-types.h中定义。打开real210.c搜索gd->bd->bi_arch_number，修改成gd->bd->bi_arch_number = CONFIG_MACH_TYPE;，CONFIG_MACH_TYPE定义在real210.h文件中，被定义成MACH_TYPE_SMDKV210，这样就可以使机器码匹配了。

编译下载。

关于内核的配置，请参考http://blog.csdn.net/wang_shuai_ww/article/details/19640009