my_string.c

uboot底层驱动

/*
 *	uart.c    -     driver of uart 
 *	
 *	Author: 	<[e-mail]>
 *	Date:		2007-10-31
 */
#include <stdlib.h>
#include <stdio.h>
#include "my_string.h"
#include "my_printf.h"

int addrdn;
typedef struct pp {
	int p[3];
	int num;
}pt;
pt pr;

char *use_cmd[] = {"help", "dn", "go", "erase", "cp", "testsdram",
            "testcpu", "testnorflash", "testrtc", "testbeep", "testled", "testkey", "testin", "testout",
            "testadc", "set_channel"};

extern int addr[2];


int my_strcmp(const char *dst , const char *src)
{
	
	while ( *src == *dst && *dst != '\0' )
	{
		src++;
		dst++;
	}
	return (*src - *dst); 
}


int my_strcpy(char *dst, char *src)
{

	while (*dst++ = *src++);
	return 0;
}
	
void help_pp()
{
	int i = 0;
	for(; i<16;i++)
	my_printf("%s\n\r",use_cmd[i]);
}

void div_cmd(char *cmd)
{
	int i=0;
	int j=0;
        while (cmd[i] == ' ') i++;
	pr.p[j++] = i;
	while (cmd[i] != '\0' && j <= 3) 
	{
	   if (cmd[i] == ' ')
 	   {
		cmd[i++] = '\0';
	   while (cmd[i] == ' ') i++;
           pr.p[j++] = i;
	   pr.num++;
  	   }
	   i++;
	}
	return;
}
	
	
int cmd_cmp(char *cmd)
{
	int i = 0;
	int j = 0;
	int result;
	pr.num = 0;
	div_cmd(cmd);
	for(; i<16;i++)
	{
 	  result = my_strcmp(use_cmd[i], &cmd[pr.p[0]]);
	  if(result == 0)
	  {
		for (; j < pr.num; j++)
                  addr[j] = (int) strtol(&cmd[pr.p[j+1]], (char **) NULL, 16);
	  	return i;
	  	my_printf("i=%d\n\r", i);
	  }
	}
	return 16;
}


int mesg_begin(int RoBase, int ZiLimit)
{	
    int i = 0;
 	my_printf( "uboot code start at0x%x\n\r", RoBase);
	my_printf( "uboot code end at0x%x\n\r", ZiLimit);
	my_printf( "Sdram :%d\n\r", 8);
	my_printf( "Sdram :%d\n\r", 8);
	my_printf("In/Out/Err: serial\n\r");  

	for (; i<10; i++)
	{   int time = 0;
		for(; time<0xfffff; time++)
			if (((*(volatile unsigned  *)(0x10005014)) & 0x01) ==1)
			{
				return 0;
				}
	    my_printf("Hit any key to stop autoboot: %d%\r", i);
	    time = 0;
	}
	return 1;
 }