/* * SNTP support driver * * Masami Komiya <mkomiya@sonare.it> 2005 * */ #include <common.h> #include <command.h> #include <net.h> #include <rtc.h> #include "sntp.h" #if ((CONFIG_COMMANDS & CFG_CMD_NET) && (CONFIG_COMMANDS & CFG_CMD_SNTP)) #define SNTP_TIMEOUT 10 static int SntpOurPort; static void SntpSend (void) { struct sntp_pkt_t pkt; int pktlen = SNTP_PACKET_LEN; int sport; debug ("%s\n", __FUNCTION__); memset (&pkt, 0, sizeof(pkt)); pkt.li = NTP_LI_NOLEAP; pkt.vn = NTP_VERSION; pkt.mode = NTP_MODE_CLIENT; memcpy ((char *)NetTxPacket + NetEthHdrSize() + IP_HDR_SIZE, (char *)&pkt, pktlen); SntpOurPort = 10000 + (get_timer(0) % 4096); sport = NTP_SERVICE_PORT; NetSendUDPPacket (NetServerEther, NetNtpServerIP, sport, SntpOurPort, pktlen); } static void SntpTimeout (void) { puts ("Timeout\n"); NetState = NETLOOP_FAIL; return; } static void SntpHandler (uchar *pkt, unsigned dest, unsigned src, unsigned len) { struct sntp_pkt_t *rpktp = (struct sntp_pkt_t *)pkt; struct rtc_time tm; ulong seconds; debug ("%s\n", __FUNCTION__); if (dest != SntpOurPort) return; /* * As the RTC's used in U-Boot sepport second resolution only * we simply ignore the sub-second field. */ memcpy (&seconds, &rpktp->transmit_timestamp, sizeof(ulong)); to_tm(ntohl(seconds) - 2208988800UL + NetTimeOffset, &tm); #if (CONFIG_COMMANDS & CFG_CMD_DATE) rtc_set (&tm); #endif printf ("Date: %4d-%02d-%02d Time: %2d:%02d:%02d\n", tm.tm_year, tm.tm_mon, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec); NetState = NETLOOP_SUCCESS; } void SntpStart (void) { debug ("%s\n", __FUNCTION__); NetSetTimeout (SNTP_TIMEOUT * CFG_HZ, SntpTimeout); NetSetHandler(SntpHandler); memset (NetServerEther, 0, 6); SntpSend (); } #endif /* CONFIG_COMMANDS & CFG_CMD_SNTP */