u-boot->board->hk->hks3c44b0.c

#include
#include

/*
 * Miscelaneous platform dependent initialization
 */

int board_init (void)
{
 DECLARE_GLOBAL_DATA_PTR;

      //#define DECLARE_GLOBAL_DATA_PTR     register volatile gd_t *gd asm ("r8")

      //DECLARE_GLOBAL_DATA_PTR为指向R8的寄存器类型的指针
 u32 temp;

 /* Configuration Port Control Register*/
 /* Port A */
 PCONA = 0x1ff;

 /* Port B */
 PCONB = 0x1Cf;
 //ATB = 0xFFFF;

 /* Port C */
 
 PCONC = 0x0f05ff55;
 PUPC=0x30f0;
 PDATC = 0x0000;
 
 

 /* Port D */
 
 PCOND = 0xaaaa;
 PUPD = 0xff;
 

 /* Port E */
 PCONE = 0x2556a;
 PDATE = 0x0;
 PUPE = 0xff;

 /* Port F */
 PCONF = 0x9256A;
 PDATF  = 0xff; /* B2-eth_reset tied high level */
 /*
 PUPF = 0x1e3;
 */

 /* Port G */
 PUPG = 0xf;
 PCONG = 0xFFFF; /*PG0= EINT0= ETH_INT prepared for linux kernel*/

 INTMSK = 0x03fffeff;
 INTCON = 0x05;

    /*
     Configure chip ethernet interrupt as High level
     Port G EINT 0-7 EINT0 -> CHIP ETHERNET
    */
 temp = EXTINT;
    temp &= ~(0x7<<4);
    temp |= (0x4<<4); /*LEVEL_HIGH*/
 EXTINT = temp;

    /*
     Reset SMSC LAN91C96 chip
    */
    temp= PCONF;
    temp |= 0x00000040;
    PCONF = temp;

 /* Reset high */
    temp = PDATF;
    temp |= (1 << 3);
    PDATF = temp;

    /* Short delay */
    for (temp=0;temp<10;temp++)
    {
  /* NOP */
    }

    /* Reset low */
    temp = PDATF;
    temp &= ~(1 << 3);
    PDATF = temp;

 /* arch number MACH_TYPE_MBA44B0 */
 gd->bd->bi_arch_number = 178;

 /* location of boot parameters */
 gd->bd->bi_boot_params = 0x0c000100;
 
 

 return 0;
}

int dram_init (void)
{
 DECLARE_GLOBAL_DATA_PTR;

 gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
 gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;

 return (0);
}

void LED()
{

PDATC = 0x0000;
PDATC = 0x0000;
PDATC = 0xffff;
PDATC = 0x0000;
PDATC = 0x0000;
}