DM9000在内核启动加载的时候死机

lingyunwmr

static int __init
dm9000_init(void)
{
#if defined(CONFIG_ARCH_S3C2410)
 unsigned int oldval_bwscon = *(volatile unsigned int *)S3C2410_BWSCON;
 unsigned int oldval_bankcon4 = *(volatile unsigned int *)S3C2410_BANKCON4;
// *((volatile unsigned int *)S3C2410_BWSCON) =
  // (oldval_bwscon & ~(3<<16)) | S3C2410_BWSCON_DW4_16 | S3C2410_BWSCON_WS4 | S3C2410_BWSCON_ST4;
 //*((volatile unsigned int *)S3C2410_BANKCON4) = 0x1f7c;
 *((volatile unsigned int *)S3C2410_BWSCON) = (oldval_bwscon| 0x000f0000) & 0xfff1ffff;
 *((volatile unsigned int *)S3C2410_BANKCON4) = 0x0700;

#endif
 printk(KERN_INFO "%s Ethernet Driver, V%s\n", CARDNAME, DRV_VERSION);

 return platform_driver_register(&dm9000_driver);
}

 

 

改动了  BWSCON  和  BANKCON4 的值