board.c

摩托罗拉冷火系列bootloader源码

#include "arch.h"
#include "mcfuart.h"

char	ident[] = "Moreton Bay NETtel";
char	copyright[] = "(C) 1999, Moreton Bay Ventures";
#define	IMAGE_ADDR  0xf0010000
#define IMAGE_SIZE 0x000e0000
#define XFER_ADDR 0x400
#define DEFAULT_PORT 0

extern unsigned int consoleBase;

void configureConsole()
{
	consoleBase = MCFUART_BASE1;
	configureSerial(consoleBase, 19200, MCF_CLK);
}

void configureAuxSerial()
{
	configureSerial(MCFUART_BASE2, 115200, MCF_CLK);
}

/* State to LED mapping */
void setLED(int state)
{
	unsigned char bits;

	switch(state) {
		case 0:
			bits = 0x00;
			break;
		case 1:
			bits = 0x01;
			break;
		case 2:
			bits = 0x02;
			break;
		case 3:
			bits = 0x04;
			break;
		case 4:
			bits = 0x08;
			break;
		case 5:
			bits = 0x10;
			break;
		case 6:
			bits = 0x20;
			break;
		case 7:
			bits = 0x40;
			break;
		case 8:
			bits = 0x80;
			break;
		case 10:
			bits = 0x10;
			break;
		case 11:
			bits = 0x11;
			break;
		case 12:
			bits = 0x12;
			break;
		case 13:
			bits = 0x13;
			break;
		case 14:
			bits = 0x14;
			break;
		case 15:
			bits = 0x15;
			break;
		default:
			return;
	}

	*((volatile unsigned char *)0x30400000)
		= (unsigned char)(~bits);
}

extern unsigned int downloadPort;
extern unsigned int image_size;
extern unsigned char *xfer_addr;
extern unsigned char *down_addr;
extern unsigned char *dest_addr;
extern unsigned char *source_addr;

void setImageParams()
{
	downloadPort = DEFAULT_PORT;
	image_size  = IMAGE_SIZE;
	xfer_addr   = (unsigned char *)XFER_ADDR;
	down_addr   = (unsigned char *)IMAGE_ADDR;
	dest_addr   = (unsigned char *)0xf1000000;
	source_addr = (unsigned char *)IMAGE_ADDR;
}

void setupBoard()
{
	volatile unsigned char	*mbar;
	mbar = (volatile unsigned char *) MCF_MBAR;

	/*
	 *	Firstly set up the POWER and DIAG LEDs. They are on
	 *	parallel I/O pins of the 5307.
	 */
	*((volatile unsigned short *) (mbar + MCFSIM_PAR)) = 0x0000;
	*((volatile unsigned short *) (mbar + MCFSIM_PADDR)) = 0x00ec;

	/* Set POWER and DIAG LEDs on */
	*((volatile unsigned short *) (mbar + MCFSIM_PADAT)) = 0x0000;

	/*
	 *	Setup chip selects...
	 */
	/* CS0 -- FLASH ROM */
	*((volatile unsigned short *) (mbar + MCFSIM_CSAR0)) = 0xf000;
	*((volatile unsigned long *) (mbar + MCFSIM_CSMR0)) = 0x000f0001;
	*((volatile unsigned short *) (mbar + MCFSIM_CSCR0)) = 0x1980;

	/* CS1 -- PCI host bridge */
	*((volatile unsigned short *) (mbar + MCFSIM_CSAR1)) = 0x5000;
	*((volatile unsigned long *) (mbar + MCFSIM_CSMR1)) = 0x000f0001;
	*((volatile unsigned short *) (mbar + MCFSIM_CSCR1)) = 0x3d80;

	/* CS2-7 */
	*((volatile unsigned short *) (mbar + MCFSIM_CSBAR)) = 0x3000;
	*((volatile unsigned short *) (mbar + MCFSIM_CSBAMR)) = 0x0000;

	/* CS2 -- LED bank, address 0x30400000 */
	*((volatile unsigned short *) (mbar + MCFSIM_CSMR2)) = 0x0001;
	*((volatile unsigned short *) (mbar + MCFSIM_CSCR2)) = 0x0140;
	setLED(0);

	/* CS3 -- ethernet, address 0x30600000 */
	*((volatile unsigned short *) (mbar + MCFSIM_CSMR3)) = 0x0001;
	*((volatile unsigned short *) (mbar + MCFSIM_CSCR3)) = 0x0d80;
}

static int delay(int size)
{
	int	i;

	for (i = 0; (i < size); i++)
		nop();
}

void setupDRAM()
{
	volatile unsigned char *mbar = (unsigned char *)MCF_MBAR;
	unsigned long	junk;

	*((volatile unsigned short *) (mbar + MCFSIM_DCR)) = 0x8130;
	*((volatile unsigned long *) (mbar + MCFSIM_DACR0)) = 0x00000300;
	*((volatile unsigned long *) (mbar + MCFSIM_DMR0)) = 0x003c0001;
	*((volatile unsigned long *) (mbar + MCFSIM_DACR0)) = 0x00000308;
	junk = *((volatile unsigned long *) 0x200);
	nop();

	*((volatile unsigned long *) (mbar + MCFSIM_DACR0)) = 0x00008300;
	delay(0x1000);

	*((volatile unsigned long *) (mbar + MCFSIM_DACR0)) = 0x00008340;
	*((volatile unsigned long *) 0x200) = 0x00000000;

	delay(0x10);
}