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) \ 16 && defined(CONFIG_CMD_SNTP) 17 18 #define SNTP_TIMEOUT 10 19 20 static int SntpOurPort; 21 22 static void 23 SntpSend (void) 24 { 25 struct sntp_pkt_t pkt; 26 int pktlen = SNTP_PACKET_LEN; 27 int sport; 28 29 debug ("%s\n", __FUNCTION__); 30 31 memset (&pkt, 0, sizeof(pkt)); 32 33 pkt.li = NTP_LI_NOLEAP; 34 pkt.vn = NTP_VERSION; 35 pkt.mode = NTP_MODE_CLIENT; 36 37 memcpy ((char *)NetTxPacket + NetEthHdrSize() + IP_HDR_SIZE, (char *)&pkt, pktlen); 38 39 SntpOurPort = 10000 + (get_timer(0) % 4096); 40 sport = NTP_SERVICE_PORT; 41 42 NetSendUDPPacket (NetServerEther, NetNtpServerIP, sport, SntpOurPort, pktlen); 43 } 44 45 static void 46 SntpTimeout (void) 47 { 48 puts ("Timeout\n"); 49 NetState = NETLOOP_FAIL; 50 return; 51 } 52 53 static void 54 SntpHandler (uchar *pkt, unsigned dest, unsigned src, unsigned len) 55 { 56 struct sntp_pkt_t *rpktp = (struct sntp_pkt_t *)pkt; 57 struct rtc_time tm; 58 ulong seconds; 59 60 debug ("%s\n", __FUNCTION__); 61 62 if (dest != SntpOurPort) return; 63 64 /* 65 * As the RTC's used in U-Boot sepport second resolution only 66 * we simply ignore the sub-second field. 67 */ 68 memcpy (&seconds, &rpktp->transmit_timestamp, sizeof(ulong)); 69 70 to_tm(ntohl(seconds) - 2208988800UL + NetTimeOffset, &tm); 71 #if defined(CONFIG_CMD_DATE) 72 rtc_set (&tm); 73 #endif 74 printf ("Date: %4d-%02d-%02d Time: %2d:%02d:%02d\n", 75 tm.tm_year, tm.tm_mon, tm.tm_mday, 76 tm.tm_hour, tm.tm_min, tm.tm_sec); 77 78 NetState = NETLOOP_SUCCESS; 79 } 80 81 void 82 SntpStart (void) 83 { 84 debug ("%s\n", __FUNCTION__); 85 86 NetSetTimeout (SNTP_TIMEOUT * CFG_HZ, SntpTimeout); 87 NetSetHandler(SntpHandler); 88 memset (NetServerEther, 0, 6); 89 90 SntpSend (); 91 } 92 93 #endif 94