1 /* 2 * SNTP support driver 3 * 4 * Masami Komiya <mkomiya@sonare.it> 2005 5 * 6 */ 7 8 #include <common.h> 9 #include <command.h> 10 #include <net.h> 11 #include <rtc.h> 12 13 #include "sntp.h" 14 15 #if defined(CONFIG_CMD_NET) && defined(CONFIG_CMD_SNTP) 16 17 #define SNTP_TIMEOUT 10000UL 18 19 static int SntpOurPort; 20 21 static void 22 SntpSend (void) 23 { 24 struct sntp_pkt_t pkt; 25 int pktlen = SNTP_PACKET_LEN; 26 int sport; 27 28 debug ("%s\n", __FUNCTION__); 29 30 memset (&pkt, 0, sizeof(pkt)); 31 32 pkt.li = NTP_LI_NOLEAP; 33 pkt.vn = NTP_VERSION; 34 pkt.mode = NTP_MODE_CLIENT; 35 36 memcpy ((char *)NetTxPacket + NetEthHdrSize() + IP_HDR_SIZE, (char *)&pkt, pktlen); 37 38 SntpOurPort = 10000 + (get_timer(0) % 4096); 39 sport = NTP_SERVICE_PORT; 40 41 NetSendUDPPacket (NetServerEther, NetNtpServerIP, sport, SntpOurPort, pktlen); 42 } 43 44 static void 45 SntpTimeout (void) 46 { 47 puts ("Timeout\n"); 48 NetState = NETLOOP_FAIL; 49 return; 50 } 51 52 static void 53 SntpHandler (uchar *pkt, unsigned dest, unsigned src, unsigned len) 54 { 55 struct sntp_pkt_t *rpktp = (struct sntp_pkt_t *)pkt; 56 struct rtc_time tm; 57 ulong seconds; 58 59 debug ("%s\n", __FUNCTION__); 60 61 if (dest != SntpOurPort) return; 62 63 /* 64 * As the RTC's used in U-Boot sepport second resolution only 65 * we simply ignore the sub-second field. 66 */ 67 memcpy (&seconds, &rpktp->transmit_timestamp, sizeof(ulong)); 68 69 to_tm(ntohl(seconds) - 2208988800UL + NetTimeOffset, &tm); 70 #if defined(CONFIG_CMD_DATE) 71 rtc_set (&tm); 72 #endif 73 printf ("Date: %4d-%02d-%02d Time: %2d:%02d:%02d\n", 74 tm.tm_year, tm.tm_mon, tm.tm_mday, 75 tm.tm_hour, tm.tm_min, tm.tm_sec); 76 77 NetState = NETLOOP_SUCCESS; 78 } 79 80 void 81 SntpStart (void) 82 { 83 debug ("%s\n", __FUNCTION__); 84 85 NetSetTimeout (SNTP_TIMEOUT, SntpTimeout); 86 NetSetHandler(SntpHandler); 87 memset (NetServerEther, 0, 6); 88 89 SntpSend (); 90 } 91 92 #endif 93