/*OM[1:0] == 0, NAND FLash boot*/
void judgecodeposition()
{
S3C24X0_MEMCTL *const memctl = S3C24X0_GetBase_MEMCTL();
if(memctl->BWSCON & 0x6)
{
/*boot form nandflash*/
}
else if(!(memctl->BWSCON & 0x6))
{
/*boot form norflash*/
/*init zi bss*/
}
}
void memoryconfig()
{
int i;
S3C24X0_MEMCTL *const memctl = S3C24X0_GetBase_MEMCTL();
memctl->BWSCON = (2<<28)|(2<<24)|(1<<20)|(2<<16)|(1<<12)|(1<<8)|(1<<4)|(1<<1);
for(i=0;i<6;i++)
memctl->BANKCON[i] = 0x0700;
memctl->BANKCON[6] = (3<<15)|(1<<2)|(1<<0);
memctl->BANKCON[7] = (3<<15)|(1<<2)|(1<<0);
memctl->REFRESH = (1<<23)|(0<<22)|(1<<20)|(1<<18)|(1268);
memctl->BANKSIZE = (1<<5)|(1<<4)|2;
memctl->MRSRB6 = 0x30;
memctl->MRSRB7 = 0x30;
}
int board_init (void)
{
S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
S3C24X0_MEMCTL * const memctl = S3C24X0_GetBase_MEMCTL();
unsigned long bus_conf;
/*Buzzer_Stop*/
gpio->GPBCON &= ~3; //set GPB0 as output
gpio->GPBCON |= 1;
gpio->GPBDAT &= ~1;
/* to reduce PLL lock time, adjust the LOCKTIME register */
clk_power->LOCKTIME = 0xFFFFFF;
/* configure MPLL */
clk_power->MPLLCON = ((M_MDIV << 12) + (M_PDIV << 4) + M_SDIV);
/* some delay between MPLL and UPLL */
delay (4000);
/* configure UPLL */
clk_power->UPLLCON = ((U_M_MDIV << 12) + (U_M_PDIV << 4) + U_M_SDIV);
/* some delay between MPLL and UPLL */
delay (8000);
/* set up the I/O ports */
gpio->GPACON = 0x007FFFFF;
gpio->GPBCON = 0x002a9655;
gpio->GPBUP = 0x000007FF;
gpio->GPCCON = 0xAAAAAAAA;
gpio->GPCUP = 0x0000FFFF;
gpio->GPDCON = 0xAAAAAAAA;
gpio->GPDUP = 0x0000FFFF;
gpio->GPECON = 0xAAAAAAAA;
gpio->GPEUP = 0x0000FFFF;
gpio->GPFCON = 0x000055AA;
gpio->GPFUP = 0x000000FF;
gpio->GPGCON = 0xFD95FFBA;
gpio->GPGUP = 0x0000FFFF;
#ifdef CONFIG_SERIAL3
gpio->GPHCON = 0x002AAAAA;
#else
gpio->GPHCON = 0x002AFAAA;
#endif
gpio->GPHUP = 0x000007FF;
gpio->GPJCON = 0x2AAAAAA;
#if 0
/* USB Device Part */
/*GPGCON is reset for USB Device */
gpio->GPGCON = (gpio->GPGCON & ~(3 << 24)) | (1 << 24); /* Output Mode */
gpio->GPGUP = gpio->GPGUP | ( 1 << 12); /* Pull up disable */
gpio->GPGDAT |= ( 1 << 12) ;
gpio->GPGDAT &= ~( 1 << 12) ;
udelay(20000);
gpio->GPGDAT |= ( 1 << 12) ;
#endif
/*configure for cs8900 chip IO*/
bus_conf = memctl->BWSCON;
memctl->BWSCON = (bus_conf & ~0x0000F000) | 0x0000d000;
/* arch number of AKAE2440-Board */
gd->bd->bi_arch_number = MACH_TYPE_AKAE2440;
/* adress of boot parameters */
gd->bd->bi_boot_params = 0x30000100;
icache_enable();
dcache_enable();
return 0;
}
