移植U-Boot-2008.10到友善之臂mini2440（六）

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1.2.12 修改u-boot-2008.10/include/configs/mini2440.h 头文件

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(1)添加对2440的宏定义：

#define CONFIG_ARM920T???????? 1?????? /* This is an ARM920T Core???? */

#define CONFIG_S3C2440???????? 1 /* in a SAMSUNG S3C2440 SoC */

#define CONFIG_mini2440?????????? 1 /* on a SAMSUNG mini2440 Board */

#define CONFIG_mini2440_LED????? 1 /* Use the LED on Board */

//#define????? CONFIG_S3C2410? 1?? /* in a SAMSUNG S3C2410 SoC???? */

//#define CONFIG_SMDK2410?????? 1? /* on a SAMSUNG SMDK2410 Board? */

/* input clock of PLL */

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(2)修改网卡的宏定义，注释掉CS8900的部分，添加对DM9000的支持：

/*

?* Hardware drivers

?*/

//#define CONFIG_DRIVER_CS8900 1?????? /* we have a CS8900 on-board */

//#define CS8900_BASE????????? 0x19000300

//#define CS8900_BUS16???????? 1 /* the Linux driver does accesses as shorts */

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#define CONFIG_DRIVER_DM9000????????? 1

#define CONFIG_DM9000_USE_16BIT ????????????? 1

#define CONFIG_DM9000_BASE??????????????????? 0x20000300

#define DM9000_IO???????????????????????????? 0x20000300?

#define DM9000_DATA?????????????????????????? 0x20000304

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(3)添加支持Nand 启动等宏定义，将相关IP设置的注释去掉，并修改IP设置，顺便修改下启动参数的宏设置：

#define CONFIG_CMD_CACHE

#define CONFIG_CMD_DATE

#define CONFIG_CMD_ELF

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#define CONFIG_CMD_PING

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#define CONFIG_SETUP_MEMORY_TAGS

#define CONFIG_INITRD_TAG

#define CONFIG_CMDLINE_TAG

/*向linux内核传递函数所需的宏*/

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//nand Flash param

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#define CONFIG_CMD_NAND

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#define CONFIG_CMDLINE_EDITING

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#ifdef CONFIG_CMDLINE_EDITING

#undef CONFIG_AUTO_COMPLETE

#else

#define CONFIG_AUTO_COMPLETE

#endif

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//#define CONFIG_NAND_LEGACY

//不使用LEGACY,以使用自带的nand flash驱动

/*

?* NAND flash settings

?*/

#if defined(CONFIG_CMD_NAND)

#define CFG_NAND_BASE 0x4E000000

/* NandFlash控制器在SFR区起始寄存器地址 */

#define CFG_MAX_NAND_DEVICE ?? 1??????

/* Max number of NAND devices???????? */

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#define CONFIG_MTD_NAND_VERIFY_WRITE 1 //使能flash写校验

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/* #undef CONFIG_MTD_NAND_VERIFY_WRITE */

#endif? /* CONFIG_CMD_NAND */

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#define CONFIG_BOOTDELAY?????? 2

#define CONFIG_BOOTARGS??????? "noinitrd root=/dev/nfs nfsroot=192.168.1.10:/opt/root_nfs ip=192.168.1.70:192.168.1.10:192.168.1.10:255.255.255.0:mini.arm9.net:eth0:off init=linuxrc console=ttySAC0"

#define CONFIG_ETHADDR 08:00:3e:26:0a:5b?

#define CONFIG_NETMASK???????????? 255.255.255.0

#define CONFIG_IPADDR????????? 192.168.1.70??? /*改变默认的IP地址*/

#define CONFIG_SERVERIP??????? 192.168.1.80? /*改变原服务器IP地址*/

/*#define CONFIG_BOOTFILE????? "elinos-lart" */

#define CONFIG_BOOTCOMMAND???? "tftp 0x31000000 uImage;bootm 0x31000000"

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#undef? CFG_CLKS_IN_HZ???????? /* everything,incl board info,in Hz */

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#define CFG_LOAD_ADDR? 0x31000000???? /* default load address??????? bootm use it*/

......

/*------------------------------------------------------------------

?* FLASH and environment organization

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//#define CONFIG_AMD_LV400???? 1?????? /* uncomment this if you have a LV400 flash */

//#if 0

//#define CONFIG_AMD_LV800???? 1?????? /* uncomment this if you have a LV800 flash */

//#endif

#define CONFIG_AMD_LV800????????????? /*mini2440上用的是2M的Nor Flash，暂时用这个也可以从Nor Flash启动 */

/*------------------------------*/

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(5)在Nand Flash中保存 u-boot 参数 (saveenv 功能)：

/* timeout values are in ticks */

#define CFG_FLASH_ERASE_TOUT?? (5*CFG_HZ) /* Timeout for Flash Erase */

#define CFG_FLASH_WRITE_TOUT?? (5*CFG_HZ) /* Timeout for Flash Write */

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#define CONFIG_ENV_IS_IN_NAND?? 1

#define CONFIG_ENV_OFFSET?????? 0x30000

//#define CFG_ENV_OFFSET 0X30000

//#define????? CONFIG_ENV_IS_IN_FLASH 1

#define CONFIG_ENV_SIZE???? 0x10000?? /* Total Size of Environment Sector */

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(6)为了在U-Boot运行阶段对一些寄存器进行操作，在此文件后面添加代码：

# if defined(CONFIG_mini2440_LED)

/* GPIO */

#define GPIO_CTL_BASE 0x56000000

#define oGPIO_B 0x10

#define oGPIO_CON 0x0 /* R/W,Configures the pins of the port */

#define oGPIO_DAT 0x4 /* R/W,Data register for port */

#define oGPIO_UP 0x8 /* R/W,Pull-up disable register */

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#endif

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#define STACK_BASE 0x33f00000

#define STACK_SIZE 0x8000

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/* NAND Flash Controller */

#define NAND_CTL_BASE 0x4E000000

#define bINT_CTL(Nb) __REG(INT_CTL_BASE + (Nb))

/* Offset */

#define oNFCONF 0x00

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# if defined(CONFIG_S3C2440)

#define CONFIG_S3C2440_NAND_BOOT 1

/* Offset */

#define oNFCONT 0x04

#define oNFCMD 0x08

#define oNFADDR 0x0c

#define oNFDATA 0x10

#define oNFSTAT 0x20

#define oNFECC 0x2c

#define rNFCONF (*(volatile unsigned int *)0x4e000000)

#define rNFCONT (*(volatile unsigned int *)0x4e000004)

#define rNFCMD (*(volatile unsigned char *)0x4e000008)

#define rNFADDR (*(volatile unsigned char *)0x4e00000c)

#define rNFDATA (*(volatile unsigned char *)0x4e000010)

#define rNFSTAT (*(volatile unsigned int *)0x4e000020)

#define rNFECC (*(volatile unsigned int *)0x4e00002c)

#endif

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# if defined(CONFIG_S3C2410)

#define CONFIG_S3C2410_NAND_BOOT 1

/* Offset */

#define oNFCONF 0x00

#define oNFCMD 0x04

#define oNFADDR 0x08

#define oNFDATA 0x0c

#define oNFSTAT 0x10

#define oNFECC 0x14

#define rNFCONF (*(volatile unsigned int *)0x4e000000)

#define rNFCMD (*(volatile unsigned char *)0x4e000004)

#define rNFADDR (*(volatile unsigned char *)0x4e000008)

#define rNFDATA (*(volatile unsigned char *)0x4e00000c)

#define rNFSTAT (*(volatile unsigned int *)0x4e000010)

#define rNFECC (*(volatile unsigned int *)0x4e000014)

#define rNFECC0 (*(volatile unsigned char *)0x4e000014)

#define rNFECC1 (*(volatile unsigned char *)0x4e000015)

#define rNFECC2 (*(volatile unsigned char *)0x4e000016)

#endif

#endif? /* __CONFIG_H */

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1.2.13 修改u-boot-2008.10/lib_arm/board.c 文件

(1)添加头文件引用：

#include <nand.h>

#include <onenand_uboot.h>

#include <s3c2410.h>

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(2)添加LED功能，指示进度：
static int display_banner (void)

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# if defined(CONFIG_mini2440_LED)????

??? S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();

???????? gpio->GPBDAT = 0x100;

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//在串口初始化和console初始化完成，串口输出信息之前，LED1、LED2、LED3会亮起！

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#endif

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#if !defined(CONFIG_mini2440_LED)

??????? S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();

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#endif

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??????? printf ("nn%snn",version_string);

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??????? reset_phy();

?#endif

?#endif

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#if defined(CONFIG_mini2440_LED) ????

?????????????? S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();

#endif

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# if defined(CONFIG_mini2440_LED)????

???????? gpio->GPBDAT = 0x0;

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//在进入命令提示符之前，四个LED会同时亮起！

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#endif

??????? /* main_loop() can return to retry autoboot,if so just run it again. */