IT民工
分类： 嵌入式
2009-09-03 13:11:11
接上面的：
6 修改/board/tekkaman/tekkaman2440/tekkaman2440.c
因为友善之臂SBC2440和smdk2410的GPIO连接有所不同，修改其对GPIO和PLL的配置(请参阅友善之臂SBC2440的硬件说明和2440芯片手册)：
......
#elif FCLK_SPEED==1 /* Fout = 405MHz */
//#define M_MDIV 0x5c
//#define M_PDIV 0x4
//#define M_SDIV 0x0
#define M_MDIV 0x7f
#define M_PDIV 0x2
#define M_SDIV 0x1
......
#elif USB_CLOCK==1
//#define U_M_MDIV 0x48
//#define U_M_PDIV 0x3
#define U_M_MDIV 0x38
#define U_M_PDIV 0x2
#define U_M_SDIV 0x2
......
/* set up the I/O ports */
gpio->GPACON = 0x007FFFFF;
//gpio->GPBCON = 0x00044556;
gpio->GPBCON = 0x00055556;
......
/* arch number of S3C2440 -Board */
gd->bd->bi_arch_number = MACH_TYPE_S3C2440 ;
/* adress of boot parameters */
gd->bd->bi_boot_params = 0x30000100;
icache_enable();
dcache_enable();
gpio->GPBDAT = 0x180; //tekkamanninja
//int board_init (void)设置完成后，LED1和LED2会亮起！
return 0;
}
7 为了实现NAND Flash的读写，再次修改/include/configs/tekkaman2440.h
(请格外注意：如果编译时报错，在Linux下用KWrite等有高亮显示的文本编辑器看看文件的注释是不是为注释应有的颜色（KWrite中为灰色），如果不是,则将注释删除。因为#define后面的注释被认为是程序的一部分。建议注释和#define分行写)
......
/*
* High Level Configuration Options
* (easy to change)
*/
#define CONFIG_ARM920T 1 /* This is an ARM920T Core */
#define CONFIG_S3C2440 1 /* in a SAMSUNG S3C2440 SoC */
#define CONFIG_tekkaman2440 1 /* on a SAMSUNG tekkaman2440 Board */
......
/***********************************************************
* Command definition
***********************************************************/
#define CONFIG_COMMANDS \
(CONFIG_CMD_DFL | \
CFG_CMD_CACHE | \
CFG_CMD_NAND | \
CFG_CMD_NET | \
/*CFG_CMD_EEPROM |*/ \
/*CFG_CMD_I2C |*/ \
/*CFG_CMD_USB |*/ \
CFG_CMD_PING | \
CFG_CMD_ENV | \
CFG_CMD_REGINFO | \
CFG_CMD_DATE | \
CFG_CMD_DHCP | \
CFG_CMD_ELF)
/* this must be included AFTER the definition of CONFIG_COMMANDS (if any) */
#include
#define CFG_LONGHELP
/* undef to save memory */
#define CFG_PROMPT "[Tekkaman2440]#"
/*Monitor Command Prompt */
#define CFG_CBSIZE 256
/* Console I/O Buffer Size */
......
#define CFG_LOAD_ADDR 0x30008000
/* default load address */
......
/* Timeout for Flash Write */
#define CFG_ENV_IS_IN_NAND 1
#define CFG_ENV_OFFSET 0X20000
//#define ENV_IS_EMBEDDED 1
#define CFG_NAND_LEGACY
#define CFG_ENV_SIZE 0x10000
/* Total Size of Environment Sector */
/*----------------------------------------------------------------------
* NAND flash settings
*/
#if (CONFIG_COMMANDS & CFG_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
/* 支持的最在Nand Flash数据 */
#define SECTORSIZE 512
/* 1页的大小 */
#define NAND_SECTOR_SIZE SECTORSIZE
#define NAND_BLOCK_MASK 511
/* 页掩码 */
#define ADDR_COLUMN 1
/* 一个字节的Column地址 */
#define ADDR_PAGE 3
/* 3字节的页块地址!!!!!*/
#define ADDR_COLUMN_PAGE 4
/* 总共4字节的页块地址!!!!! */
#define NAND_ChipID_UNKNOWN 0x00
/* 未知芯片的ID号 */
#define NAND_MAX_FLOORS 1
#define NAND_MAX_CHIPS 1
/* Nand Flash命令层底层接口函数 */
#define WRITE_NAND_COMMAND(d, adr) {rNFCMD = d;}
#define WRITE_NAND_ADDRESS(d, adr) {rNFADDR = d;}
#define WRITE_NAND(d, adr) {rNFDATA = d;}
#define READ_NAND(adr) (rNFDATA)
#define NAND_WAIT_READY(nand) {while(!(rNFSTAT&(1<<0)));}
#define NAND_DISABLE_CE(nand) {rNFCONT |= (1<<1);}
#define NAND_ENABLE_CE(nand) {rNFCONT &= ~(1<<1);}
#define WRITE_NAND_COMMANDW(d, adr) NF_CmdW(d)
/* the following functions are NOP's because S3C24X0 handles this in hardware */
#define NAND_CTL_CLRALE(nandptr)
#define NAND_CTL_SETALE(nandptr)
#define NAND_CTL_CLRCLE(nandptr)
#define NAND_CTL_SETCLE(nandptr)
/* 允许Nand Flash写校验 */
#define CONFIG_MTD_NAND_VERIFY_WRITE 1
......
#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 /* __CONFIG_H */
