uboot-vybrid_public/board/mx1ads/mx1ads.c

/*
 * board/mx1ads/mx1ads.c
 * 
 * (c) Copyright 2004
 * Techware Information Technology, Inc.
 * http://www.techware.com.tw/
 *
 * Ming-Len Wu <minglen_wu@techware.com.tw>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */


#include <common.h>
#include <mc9328.h>

/* ------------------------------------------------------------------------- */

#define FCLK_SPEED 1

#if FCLK_SPEED==0		/* Fout = 203MHz, Fin = 12MHz for Audio */
#define M_MDIV	0xC3
#define M_PDIV	0x4
#define M_SDIV	0x1
#elif FCLK_SPEED==1		/* Fout = 202.8MHz */
#define M_MDIV	0xA1
#define M_PDIV	0x3
#define M_SDIV	0x1
#endif

#define USB_CLOCK 1

#if USB_CLOCK==0
#define U_M_MDIV	0xA1
#define U_M_PDIV	0x3
#define U_M_SDIV	0x1
#elif USB_CLOCK==1
#define U_M_MDIV	0x48
#define U_M_PDIV	0x3
#define U_M_SDIV	0x2
#endif

#if 0

static inline void delay (unsigned long loops) {
	__asm__ volatile ("1:\n"
	  "subs %0, %1, #1\n"
	  "bne 1b":"=r" (loops):"0" (loops));
}

#endif 

/*
 * Miscellaneous platform dependent initialisations
 */


void SetAsynchMode(void) {
	__asm__ (
		"mrc p15,0,r0,c1,c0,0 \n"
		"mov r2, #0xC0000000 \n"
		"orr r0,r2,r0 \n"
		"mcr p15,0,r0,c1,c0,0 \n"
	);
}
                                                
static u32 mc9328sid;

int board_init (void) {

	DECLARE_GLOBAL_DATA_PTR;

	volatile unsigned int  tmp;

	mc9328sid	= MX1_SIDR;

	MX1_GPCR 	= 0x000003AB;		/* I/O pad driving strength 	*/
	
/*	MX1_CS1U 	= 0x00000A00;	*/	/* SRAM initialization 		*/
/*	MX1_CS1L 	= 0x11110601; 	*/
                        

	MX1_MPCTL0 	= 0x04632410;	/* setting for 150 MHz MCU PLL CLK	*/

/*	MX1_MPCTL0 	= 0x003f1437;	*//* setting for 192 MHz MCU PLL CLK	*/



/* set FCLK divider 1 (i.e. FCLK to MCU PLL CLK) and
 * BCLK divider to 2 (i.e. BCLK to 48 MHz)
 */
	MX1_CSCR 	= 0xAF000403;

	MX1_CSCR 	|= 0x00200000;   	/* Trigger the restart bit(bit 21)	*/
	MX1_CSCR 	&= 0xFFFF7FFF;		/* Program PRESC bit(bit 15) to 0 to divide-by-1 */

/* setup cs4 for cs8900 ethernet */
	
	MX1_CS4U	= 0x00000F00;	/* Initialize CS4 for CS8900 ethernet 	*/
	MX1_CS4L	= 0x00001501;
    
	MX1_GIUS_A	&= 0xFF3FFFFF;
	MX1_GPR_A	&= 0xFF3FFFFF;
        
	tmp = *(unsigned int *)(0x1500000C);
	tmp = *(unsigned int *)(0x1500000C);

/* setup timer 1 as system timer  	*/

	MX1_TPRER1	= 0x1f;		/* divide by 32 		*/
	MX1_TCTL1	= 0x19;		/* clock in from 32k Osc.	*/


	SetAsynchMode();

	gd->bd->bi_arch_number = 160;	/* Arch number of MX1ADS Board 		*/

	gd->bd->bi_boot_params = 0x08000100;	/* adress of boot parameters	*/

	icache_enable();
	dcache_enable();

/* set PERCLKs				*/
	MX1_PCDR = 0x00000055;     	/* set PERCLKS				*/
	
/* PERCLK3 is only used by SSI so the SSI driver can set it any value it likes 
 * PERCLK1 and PERCLK2 are shared so DO NOT change it in any other place       
 * all sources selected as normal interrupt
 */
	MX1_INTTYPEH = 0;
	MX1_INTTYPEL = 0;

	return 0;
}


int board_late_init(void) {

	setenv("stdout", "serial");
	setenv("stderr", "serial");

	switch	(mc9328sid) {
		case 0x0005901d :
			printf ("MX1ADS board with MC9328 MX1 (0L44N), Silicon ID 0x%08x \n\n",mc9328sid); 
			break;
		case 0x04d4c01d :
			printf ("MX1ADS board with MC9328 MXL (1L45N), Silicon ID 0x%08x \n\n",mc9328sid); 
			break;
		case 0x00d4c01d :
			printf ("MX1ADS board with MC9328 MXL (2L45N), Silicon ID 0x%08x \n\n",mc9328sid); 
			break;

		default :
			printf ("MX1ADS board with UNKNOWN MC9328 cpu, Silicon ID 0x%08x \n",mc9328sid); 
			break;
		
	}
	
	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;
}