4 * Masami Komiya <mkomiya@sonare.it> 2005
17 #define SNTP_TIMEOUT 10000UL
19 static int sntp_our_port;
21 /* NTP server IP address */
22 struct in_addr net_ntp_server;
23 /* offset time from UTC */
24 int net_ntp_time_offset;
26 static void sntp_send(void)
28 struct sntp_pkt_t pkt;
29 int pktlen = SNTP_PACKET_LEN;
32 debug("%s\n", __func__);
34 memset(&pkt, 0, sizeof(pkt));
36 pkt.li = NTP_LI_NOLEAP;
38 pkt.mode = NTP_MODE_CLIENT;
40 memcpy((char *)net_tx_packet + net_eth_hdr_size() + IP_UDP_HDR_SIZE,
41 (char *)&pkt, pktlen);
43 sntp_our_port = 10000 + (get_timer(0) % 4096);
44 sport = NTP_SERVICE_PORT;
46 net_send_udp_packet(net_server_ethaddr, net_ntp_server, sport,
47 sntp_our_port, pktlen);
50 static void sntp_timeout_handler(void)
53 net_set_state(NETLOOP_FAIL);
57 static void sntp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
58 unsigned src, unsigned len)
60 struct sntp_pkt_t *rpktp = (struct sntp_pkt_t *)pkt;
64 debug("%s\n", __func__);
66 if (dest != sntp_our_port)
70 * As the RTC's used in U-Boot support second resolution only
71 * we simply ignore the sub-second field.
73 memcpy(&seconds, &rpktp->transmit_timestamp, sizeof(ulong));
75 rtc_to_tm(ntohl(seconds) - 2208988800UL + net_ntp_time_offset, &tm);
80 ret = uclass_get_device(UCLASS_RTC, 0, &dev);
82 printf("SNTP: cannot find RTC: err=%d\n", ret);
85 #elif defined(CONFIG_CMD_DATE)
88 printf("Date: %4d-%02d-%02d Time: %2d:%02d:%02d\n",
89 tm.tm_year, tm.tm_mon, tm.tm_mday,
90 tm.tm_hour, tm.tm_min, tm.tm_sec);
92 net_set_state(NETLOOP_SUCCESS);
98 * Prerequisites: - own ethernet address
100 * We want: - network time
103 int sntp_prereq(void *data)
105 if (net_ntp_server.s_addr == 0) {
106 puts("*** ERROR: NTP server address not given\n");
113 int sntp_start(void *data)
115 debug("%s\n", __func__);
117 net_set_timeout_handler(SNTP_TIMEOUT, sntp_timeout_handler);
118 net_set_udp_handler(sntp_handler);
119 memset(net_server_ethaddr, 0, sizeof(net_server_ethaddr));