131 lines
2.5 KiB
C
131 lines
2.5 KiB
C
/*
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* SNTP support driver
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*
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* Masami Komiya <mkomiya@sonare.it> 2005
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*
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*/
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#include <common.h>
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#include <command.h>
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#include <dm.h>
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#include <log.h>
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#include <net.h>
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#include <rtc.h>
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#include <net/sntp.h>
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#define SNTP_TIMEOUT 10000UL
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static int sntp_our_port;
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/* NTP server IP address */
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struct in_addr net_ntp_server;
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/* offset time from UTC */
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int net_ntp_time_offset;
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static void sntp_send(void)
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{
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struct sntp_pkt_t pkt;
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int pktlen = SNTP_PACKET_LEN;
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int sport;
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debug("%s\n", __func__);
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memset(&pkt, 0, sizeof(pkt));
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pkt.li = NTP_LI_NOLEAP;
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pkt.vn = NTP_VERSION;
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pkt.mode = NTP_MODE_CLIENT;
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memcpy((char *)net_tx_packet + net_eth_hdr_size() + IP_UDP_HDR_SIZE,
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(char *)&pkt, pktlen);
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sntp_our_port = 10000 + (get_timer(0) % 4096);
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sport = NTP_SERVICE_PORT;
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net_send_udp_packet(net_server_ethaddr, net_ntp_server, sport,
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sntp_our_port, pktlen);
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}
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static void sntp_timeout_handler(void)
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{
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puts("Timeout\n");
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net_set_state(NETLOOP_FAIL);
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return;
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}
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static void sntp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
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unsigned src, unsigned len)
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{
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#ifdef CONFIG_TIMESTAMP
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struct sntp_pkt_t *rpktp = (struct sntp_pkt_t *)pkt;
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struct rtc_time tm;
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ulong seconds;
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#endif
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debug("%s\n", __func__);
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if (dest != sntp_our_port)
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return;
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#ifdef CONFIG_TIMESTAMP
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/*
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* As the RTC's used in U-Boot support second resolution only
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* we simply ignore the sub-second field.
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*/
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memcpy(&seconds, &rpktp->transmit_timestamp, sizeof(ulong));
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rtc_to_tm(ntohl(seconds) - 2208988800UL + net_ntp_time_offset, &tm);
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#if defined(CONFIG_CMD_DATE)
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# ifdef CONFIG_DM_RTC
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struct udevice *dev;
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int ret;
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ret = uclass_get_device(UCLASS_RTC, 0, &dev);
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if (ret)
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printf("SNTP: cannot find RTC: err=%d\n", ret);
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else
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dm_rtc_set(dev, &tm);
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# else
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rtc_set(&tm);
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# endif
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#endif
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printf("Date: %4d-%02d-%02d Time: %2d:%02d:%02d\n",
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tm.tm_year, tm.tm_mon, tm.tm_mday,
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tm.tm_hour, tm.tm_min, tm.tm_sec);
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#endif
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net_set_state(NETLOOP_SUCCESS);
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}
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/*
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* SNTP:
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*
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* Prerequisites: - own ethernet address
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* - own IP address
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* We want: - network time
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* Next step: none
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*/
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int sntp_prereq(void *data)
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{
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if (net_ntp_server.s_addr == 0) {
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puts("*** ERROR: NTP server address not given\n");
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return 1;
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}
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return 0;
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}
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int sntp_start(void *data)
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{
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debug("%s\n", __func__);
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net_set_timeout_handler(SNTP_TIMEOUT, sntp_timeout_handler);
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net_set_udp_handler(sntp_handler);
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memset(net_server_ethaddr, 0, sizeof(net_server_ethaddr));
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sntp_send();
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return 0;
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}
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