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9f9276c34c
Rename this function so that it is clear that it is provided by the RTC. Also return an error when it cannot function as expected. This is unlikely to occur since it works for dates since 1752 and many RTCs do not support such old dates. Still it is better to be accurate. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Heiko Schocher <hs@denx.de>
92 lines
1.8 KiB
C
92 lines
1.8 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 <net.h>
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#include <rtc.h>
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#include "sntp.h"
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#define SNTP_TIMEOUT 10000UL
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static int sntp_our_port;
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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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rtc_set(&tm);
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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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void sntp_start(void)
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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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}
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