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研发客服一、网卡的正常化配置
1、修改头文件调用关系
在原配的smdk6400.h中（因为是复制过来的），网卡配置为CS8900，而手头开发板上的网卡为DM9000，所以第一步来修改网卡驱动程序。
修改/include/configs/smdk6410.h
找到如下字段，更改如下
/*
* Hardware drivers
*/
#define CONFIG_NET_MULTI
//#define CONFIG_CS8900 /* we have a CS8900 on-board */
//#define CONFIG_CS8900_BASE 0x18800300
//#define CONFIG_CS8900_BUS16 /* follow the Linux driver */
#define CONFIG_DRIVER_DM9000 1 /* we have a DM9000 on-board */
#define CONFIG_DM9000_BASE 0x18000000
#define DM9000_IO CONFIG_DM9000_BASE
#define DM9000_DATA (CONFIG_DM9000_BASE+4)
#define CONFIG_DM9000_USE_16BIT
#define CONFIG_ETHADDR 00:40:5c:26:0a:5b
#define CONFIG_NETMASK 255.255.255.0
#define CONFIG_IPADDR 10.0.2.20
#define CONFIG_SERVERIP 10.0.2.2
#define CONFIG_GATEWAYIP 2.2.0.10
2、修改dm9000x.c文件
文件为drivers/net/dm9000x.c
在for(;;)之前加入两句
DM9000_ior(DM9000_MRRH);
DM9000_ior(DM9000_MRRL);
修改函数为dm9000_halt
static void dm9000_halt(struct eth_device *netdev)
{
DM9000_DBG('%sn', __func__);
/* RESET devie */
// phy_write(0, 0x8000); /* PHY RESET */
// DM9000_iow(DM9000_GPR, 0x01); /* Power-Down PHY */
// DM9000_iow(DM9000_IMR, 0x80); /* Disable all interrupt */
// DM9000_iow(DM9000_RCR, 0x00); /* Disable RX */
}
3、修改net配置文件
文件一 /net/eth.c
增加启动属性，在int eth_initialize(bd_t *bis)函数中，增加一段
/* for DM9000 init */
#if defined(CONFIG_DRIVER_DM9000)
dm9000_initialize(bis);
#endif
/*------------------------------*/
文件二 /net/net.c
修改ARP_TIMEOUT
#ifndef CONFIG_ARP_TIMEOUT
//# define ARP_TIMEOUT 5000UL /* Milliseconds before trying ARP again */
# define ARP_TIMEOUT 5 /* Milliseconds before trying ARP again */
#else
# define ARP_TIMEOUT CONFIG_ARP_TIMEOUT
#endif
修改NetArpWaitTimerStart
// if ((t - NetArpWaitTimerStart) > ARP_TIMEOUT) {
if ((t - NetArpWaitTimerStart) > ARP_TIMEOUT*CONFIG_SYS_HZ) {
修改NetSetTimeout
// NetSetTimeout (10000UL, PingTimeout);
NetSetTimeout (10*CONFIG_SYS_HZ, PingTimeout);
文件三/net/tftp.c
修改 TftpStart (void)
注释如下函数段
/*
* Allow the user to choose TFTP blocksize and timeout.
* TFTP protocol has a minimal timeout of 1 second.
*/
/* if ((ep = getenv('tftpblocksize')) != NULL)
* TftpBlkSizeOption = simple_strtol(ep, NULL, 10);
*
* if ((ep = getenv('tftptimeout')) != NULL)
* TftpTimeoutMSecs = simple_strtol(ep, NULL, 10);
*
* if (TftpTimeoutMSecs < 1000) {
* printf('TFTP timeout (%ld ms) too low, '
* 'set minimum = 1000 msn',
* TftpTimeoutMSecs);
* TftpTimeoutMSecs = 1000;
* }
*
* debug('TFTP blocksize = %i, timeout = %ld msn',
* TftpBlkSizeOption, TftpTimeoutMSecs);
*/
至此，网卡驱动修改完成，可以编译试一试了。
如果在局域网中，可以尝试ping一下其他主机的ip，此处我不再尝试。
接着是解决如下问题，NAND读取错误，CRC验证错误。
二、修复NAND flash
1、/include/linux/mtd/mtd.h
修改erase_info结构体，注意了是u_int32_t，而不是uint32_t
struct erase_info {
struct mtd_info *mtd;
/* uint64_t addr;
* uint64_t len;
* uint64_t fail_addr;
*/
u_int32_t addr;
u_int32_t len;
u_int32_t fail_addr;
u_long time;
u_long retries;
u_int dev;
u_int cell;
void (*callback) (struct erase_info *self);
u_long priv;
u_char state;
struct erase_info *next;
};
2、修改 mtd_erase_region_info
struct mtd_erase_region_info {
// uint64_t offset; /* At which this region starts, from the beginning of the MTD */
u_int32_t offset; /* At which this region starts, from the beginning of the MTD */
u_int32_t erasesize; /* For this region */
u_int32_t numblocks; /* Number of blocks of erasesize in this region */
unsigned long *lockmap; /* If keeping bitmap of locks */
};
3、修改mtd_info
struct mtd_info {
u_char type;
u_int32_t flags;
// uint64_t size; /* Total size of the MTD */
u_int32_t size; /* Total size of the MTD */
……
}
4、修改两个函数参量
/* Chip-supported device locking */
/* int (*lock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
* int (*unlock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
*/
int (*lock) (struct mtd_info *mtd, loff_t ofs, uint32_t len);
int (*unlock) (struct mtd_info *mtd, loff_t ofs, uint32_t len);
5、最后修改/drivers/mtd/nand/nand_ids.c
/* 16 Gigabit */
{'NAND 2GiB 1,8V 8-bit', 0xA5, 0, 2048, 0, LP_OPTIONS},
// {'NAND 2GiB 3,3V 8-bit', 0xD5, 0, 2048, 0, LP_OPTIONS},
{'NAND 2GiB 3,3V 8-bit', 0xD5, 4096, 2048, 512*1024, LP_OPTIONS},
{'NAND 2GiB 1,8V 16-bit', 0xB5, 0, 2048, 0, LP_OPTIONS16},
{'NAND 2GiB 3,3V 16-bit', 0xC5, 0, 2048, 0, LP_OPTIONS16},
6、修改/includes/asm/arch-s3c64xx/s3c6410.h
/*-----------------------------------------------------------------------
* Physical Memory Map
*/
//#define DMC1_MEM_CFG 0x00010012 /* burst 4, 13-bit row, 10-bit col */
#define DMC1_MEM_CFG 0x0001001A /* burst 4, 13-bit row, 10-bit col */
#define DMC1_MEM_CFG2 0xB45
//#define DMC1_CHIP0_CFG 0x150F8 /* 0x5000_0000~0x57ff_ffff (128 MiB) */
#define DMC1_CHIP0_CFG 0x150F0 /* 0x5000_0000~0x57ff_ffff (128 MiB) */
#define DMC_DDR_32_CFG 0x0 /* 32bit, DDR */
然后可以看到下图
此时的NAND flash已经正确读写了，只剩下CRC验证问题还有NAND无法识别zImage的问题。
三、CRC error
……这个我暂时没有解决成功…、日后再说。
四、zImage识别
uboot默认只能识别uImage。
所以要在commom目录下增加一个cmd_bootzImage.c文件
#include
#include
#ifdef CONFIG_CMD_BOOTZIMAGE
#define LINUX_PAGE_SHIFT 12
#define LINUX_PAGE_SIZE (1<
void do_bootzImage(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
int i;
u32 addr;
char *cmdline = getenv('bootargs');
void(*run)(int zero, int arch);
struct param_struct *params = (struct param_struct*)0x20000100;
//这里要注意根据平台的不同改,一般 约定俗成是内存首地址+100dex
if(argc < 2){
addr = load_addr; //默认加载地址
}
else{
addr = simple_strtoul(argv[1], NULL, 16);
}
for(i=0; i<(sizeof(struct param_struct)>>2); i++){
((u32 *)params)[i] = 0;
}
params->u1.s.page_size = LINUX_PAGE_SIZE;
params->u1.s.nr_pages = (0x04000000 >> LINUX_PAGE_SHIFT);
memcpy(params->commandline, cmdline, strlen(cmdline));
run = (void(*)(int, int))addr;
printf('start kernel.../n');
run(0, LINUX_MACHINE_ID);
}
U_BOOT_CMD( bootzImage, 2, 1, do_bootzImage,'bootzImage --boot zImage from ram./n','[addr] boot zImage directoly.');
#endif
在common/Makefile增加规则
COBJS-$(CONFIG_CMD_BOOTZIMAGE) +=cmd_bootzImage.o
在include/configs/smdk6410.h文件中添加