net.c

关于s3c2440之bootloader的源代码

#include "common.h"
#include <command.h>
#include <priv_data.h>
#include <mtd/mtd.h>
#include <net.h>
#include "bootp.h"
#include "tftp.h"
#include "rarp.h"
#include "nfs.h"

#ifdef CONFIG_CMD_NET

static user_subcommand_t net_cmds[];
#ifdef CFG_CMD_PING
void command_net_ping(int argc, const char *argv[])
{
	switch(argc){
	case 2:
		NetPingIP = string_to_ip(argv[1]);
		NetLoop(PING);
	}
}
#endif
#ifdef CFG_CMD_TFTP
void command_net_tftp(int argc, const char *argv[])
{
	bd_t *bd = &global_bd;

	switch(argc){
		case 3:
			bd->serverip = string_to_ip(argv[1]);
			sprintf(BootFile, "%s", argv[2]);
			NetLoop(TFTP);
			break;
		default:
			printf("param is invalid\n");
			return;
	}
	
	return;
}
#endif
void command_write_flash(int argc, const char *argv[])
{
	char *buf;
	//loff_t to; 
	unsigned long to;	/* is declared to long-long type ? */
	size_t size;
	mtd_partition_t *dst_part;
	int flag;
	bd_t *bd = &global_bd;

	if (bd->filesize<=0)	{
		printk("Please download the code to write firset\n");
		return;
	}
	buf = bd->fileaddr;
	switch(argc){
	case 2:
		if (strncmp("flash", argv[0], 5)==0){
			dst_part = get_mtd_partition(argv[1]);
			if (dst_part == NULL) {
				printk("Could not found \"%s\" partition\n", argv[2]);
				return;
			}
			to = dst_part->offset;
			size = dst_part->size;
			flag = dst_part->flag;
			if (bd->filesize>size){
				printk("An image size is too large to write flash. 
					wanted = 0x%08lx, loaded = 0x%08lx\n", size, bd->filesize);
				return;
			}
			write_to_flash(to, bd->filesize, bd->fileaddr, flag);
		}else{
			printk("Parameter Invalid\n");
		}
	}
}
void command_net_set(int argc, const char *argv[])
{
	bd_t *bd = &global_bd;
	switch(argc){
	case 4:
		bd->bi_ip_addr = string_to_ip(argv[1]);
		bd->netmask = string_to_ip(argv[2]);
		bd->gatewayip = string_to_ip(argv[3]);
		break;
	}
	bd->updated = 1;
}

void command_net_mac(int argc, const char *argv[])
{
	bd_t *bd = &global_bd;
	int i;
	char *s = argv[1];
	char *e;
	switch(argc){
	case 2:
		for (i=0; i<6; ++i) {
			bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0;
			if (s) s = (*e) ? e+1 : e;
		}
		break;
	}
	printf("MAC Address Change to ");
	for (i=0; i<6; ++i) {printf("%c%02X", i ? ':' : ' ', bd->bi_enetaddr[i]);}
	printf("\n");
}
void command_net_show(int argc, const char *argv[])
{
	bd_t *bd=&global_bd;
	int i;
	printf("Current Network Configuration\n");
	printf("Ethernet Address: ");
	for (i=0; i<6; ++i) {printf("%c%02X", i ? ':' : ' ', bd->bi_enetaddr[i]);}
	printf("\n");
	printf("IP Address: "); print_IPaddr(bd->bi_ip_addr); printf("\n");
	printf("Net Mask: "); print_IPaddr(bd->netmask); printf("\n");
	printf("Gateway: "); print_IPaddr(bd->gatewayip); printf("\n");
	printf("Server IP: "); print_IPaddr(bd->serverip); printf("\n");
}
static void command_net_help(int argc, const char **argv)
{
	print_usage("net", net_cmds);
}

static user_subcommand_t net_cmds[] = {
#ifdef CFG_CMD_PING
{	"ping",
	command_net_ping,
	"ping ipaddr -- Ping function"
},
#endif
#ifdef CFG_CMD_TFTP
{
	"tftp",
	command_net_tftp,
	"tftp <serverip> <filename> -- Download code From TFTP Server"
}, 
#endif
{
	"flash",
	command_write_flash,
	"flash <partname> -- Flash downloaded code to part"
}, {
	"set",
	command_net_set,
	"set <ipaddr> <mask> <gateway> -- Set IP Configuration"
}, {
	"mac",
	command_net_mac,
	"mac <mac address> -- Set MAC Address"
}, {	
	"show",
	command_net_show,
	"show -- Show Current network Configuration"
}, {
	"help",
	command_net_help,
	"help"
}, {
	NULL,
	NULL,
	NULL 
}
};
extern unsigned char enetaddr_default[];

void command_net(int argc, const char **argv)
{
	bd_t *bd = &global_bd;
	int i;
	if (!bd->updated)
	{
		printf("Initialize Net configruation\n");
		bd->bi_ip_addr = string_to_ip(CONFIG_NET_IP);
		bd->netmask = string_to_ip(CONFIG_NET_MASK);
		bd->gatewayip = string_to_ip(CONFIG_NET_GATEWAY);
		bd->fileaddr = 0;
		bd->filesize = 0;
		for (i=0; i<6; ++i)
			bd->bi_enetaddr[i] = enetaddr_default[i];
		bd->updated = 1;
	}
	bd->vlan = -1;
	bd->nvlan = -1;
	
	switch(argc)	{
	case 1:
		command_net_show(argc-1, argv+1);
		command_net_help(0, NULL);
		return;
	default:
		execsubcmd(net_cmds, argc-1, argv+1);
	}
}
user_command_t net_cmd = {
	"net",
	command_net,
	NULL,
	"net [ping|tftp|set|mac| show| help] \t\t-- Network Manage"
};
#endif