16 #define SNTP_TIMEOUT 10000UL
18 static int sntp_our_port;
20 /* NTP server IP address */
21 struct in_addr net_ntp_server;
22 /* offset time from UTC */
23 int net_ntp_time_offset;
25 static void sntp_send(void)
27 struct sntp_pkt_t pkt;
28 int pktlen = SNTP_PACKET_LEN;
31 debug("%s\n", __func__);
33 memset(&pkt, 0, sizeof(pkt));
35 pkt.li = NTP_LI_NOLEAP;
37 pkt.mode = NTP_MODE_CLIENT;
39 memcpy((char *)net_tx_packet + net_eth_hdr_size() + IP_UDP_HDR_SIZE,
40 (char *)&pkt, pktlen);
42 sntp_our_port = 10000 + (get_timer(0) % 4096);
43 sport = NTP_SERVICE_PORT;
45 net_send_udp_packet(net_server_ethaddr, net_ntp_server, sport,
46 sntp_our_port, pktlen);
49 static void sntp_timeout_handler(void)
52 net_set_state(NETLOOP_FAIL);
56 static void sntp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
57 unsigned src, unsigned len)
59 struct sntp_pkt_t *rpktp = (struct sntp_pkt_t *)pkt;
63 debug("%s\n", __func__);
65 if (dest != sntp_our_port)
69 * As the RTC's used in U-Boot support second resolution only
70 * we simply ignore the sub-second field.
72 memcpy(&seconds, &rpktp->transmit_timestamp, sizeof(ulong));
74 rtc_to_tm(ntohl(seconds) - 2208988800UL + net_ntp_time_offset, &tm);
79 ret = uclass_get_device(UCLASS_RTC, 0, &dev);
81 printf("SNTP: cannot find RTC: err=%d\n", ret);
84 #elif defined(CONFIG_CMD_DATE)
87 printf("Date: %4d-%02d-%02d Time: %2d:%02d:%02d\n",
88 tm.tm_year, tm.tm_mon, tm.tm_mday,
89 tm.tm_hour, tm.tm_min, tm.tm_sec);
91 net_set_state(NETLOOP_SUCCESS);
97 * Prerequisites: - own ethernet address
99 * We want: - network time
102 int sntp_prereq(void *data)
104 if (net_ntp_server.s_addr == 0) {
105 puts("*** ERROR: NTP server address not given\n");
112 int sntp_start(void *data)
114 debug("%s\n", __func__);
116 net_set_timeout_handler(SNTP_TIMEOUT, sntp_timeout_handler);
117 net_set_udp_handler(sntp_handler);
118 memset(net_server_ethaddr, 0, sizeof(net_server_ethaddr));