board.c

针对freescale的coldfire系列mcu的开源bootloader源码colilo的优化代码

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

char	ident[] = "Motorola 5307 C3";
char	copyright[] = "(C) 2002 Ken Treis ([e-mail])";

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;

extern unsigned long consoleBase;

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

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

void setLED() {};

void setImageParams()
{
	downloadPort = 1;
	image_size = 0x000f0000;
	source_addr = (unsigned char *)0xfff10000;
	down_addr = (unsigned char *)0xfff10000;
	xfer_addr = (unsigned char *)0x20000;
	dest_addr = (unsigned char *)0x20000;
}

void setupBoard()
{
	volatile unsigned char	*mbar;
	mbar = (volatile unsigned char *) MCF_MBAR;
	
	// CS0: Flash
	*((volatile unsigned short *) (mbar + MCFSIM_CSAR0)) = 0xfff0;
	*((volatile unsigned long *) (mbar + MCFSIM_CSMR0)) = 0x000f0001;
	*((volatile unsigned short *) (mbar + MCFSIM_CSCR0)) = 0x1980;

	/* CS2-7 */
	*((volatile unsigned short *) (mbar + MCFSIM_CSBAR)) = 0x0000;
	*((volatile unsigned short *) (mbar + MCFSIM_CSBAMR)) = 0xFF00;
}

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);
}