blob: db8c2c279984c6af7a882bde0a90837338b467fc [file] [log] [blame]
wdenkea287de2005-04-01 00:25:43 +00001/*
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 ((CONFIG_COMMANDS & CFG_CMD_NET) && (CONFIG_COMMANDS & CFG_CMD_SNTP))
16
17#define SNTP_TIMEOUT 10
18
19static int SntpOurPort;
20
21static void
22SntpSend (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
44static void
45SntpTimeout (void)
46{
47 puts ("Timeout\n");
48 NetState = NETLOOP_FAIL;
49 return;
50}
51
52static void
53SntpHandler (uchar *pkt, unsigned dest, unsigned src, unsigned len)
54{
wdenk414eec32005-04-02 22:37:54 +000055 struct sntp_pkt_t *rpktp = (struct sntp_pkt_t *)pkt;
wdenkea287de2005-04-01 00:25:43 +000056 struct rtc_time tm;
wdenk414eec32005-04-02 22:37:54 +000057 ulong seconds;
wdenkea287de2005-04-01 00:25:43 +000058
59 debug ("%s\n", __FUNCTION__);
60
61 if (dest != SntpOurPort) return;
62
wdenk414eec32005-04-02 22:37:54 +000063 /*
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));
wdenkea287de2005-04-01 00:25:43 +000068
wdenk414eec32005-04-02 22:37:54 +000069 to_tm(ntohl(seconds) - 2208988800UL + NetTimeOffset, &tm);
wdenkea287de2005-04-01 00:25:43 +000070#if (CONFIG_COMMANDS & CFG_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);
wdenkea287de2005-04-01 00:25:43 +000076
77 NetState = NETLOOP_SUCCESS;
78}
79
80void
81SntpStart (void)
82{
83 debug ("%s\n", __FUNCTION__);
84
85 NetSetTimeout (SNTP_TIMEOUT * CFG_HZ, SntpTimeout);
86 NetSetHandler(SntpHandler);
87 memset (NetServerEther, 0, 6);
88
89 SntpSend ();
90}
91
92#endif /* CONFIG_COMMANDS & CFG_CMD_SNTP */