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