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_UDP_HDR_SIZE, 35 (char *)&pkt, pktlen); 36 37 SntpOurPort = 10000 + (get_timer(0) % 4096); 38 sport = NTP_SERVICE_PORT; 39 40 NetSendUDPPacket(NetServerEther, NetNtpServerIP, sport, SntpOurPort, 41 pktlen); 42 } 43 44 static void 45 SntpTimeout(void) 46 { 47 puts("Timeout\n"); 48 net_set_state(NETLOOP_FAIL); 49 return; 50 } 51 52 static void 53 SntpHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src, 54 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", __func__); 61 62 if (dest != SntpOurPort) 63 return; 64 65 /* 66 * As the RTC's used in U-Boot sepport second resolution only 67 * we simply ignore the sub-second field. 68 */ 69 memcpy(&seconds, &rpktp->transmit_timestamp, sizeof(ulong)); 70 71 to_tm(ntohl(seconds) - 2208988800UL + NetTimeOffset, &tm); 72 #if defined(CONFIG_CMD_DATE) 73 rtc_set(&tm); 74 #endif 75 printf("Date: %4d-%02d-%02d Time: %2d:%02d:%02d\n", 76 tm.tm_year, tm.tm_mon, tm.tm_mday, 77 tm.tm_hour, tm.tm_min, tm.tm_sec); 78 79 net_set_state(NETLOOP_SUCCESS); 80 } 81 82 void 83 SntpStart(void) 84 { 85 debug("%s\n", __func__); 86 87 NetSetTimeout(SNTP_TIMEOUT, SntpTimeout); 88 net_set_udp_handler(SntpHandler); 89 memset(NetServerEther, 0, sizeof(NetServerEther)); 90 91 SntpSend(); 92 } 93