| /* |
| * SNTP support driver |
| * |
| * Masami Komiya <mkomiya@sonare.it> 2005 |
| * |
| */ |
| |
| #include <common.h> |
| #include <command.h> |
| #include <net.h> |
| #include <rtc.h> |
| |
| #include "sntp.h" |
| |
| #define SNTP_TIMEOUT 10000UL |
| |
| static int sntp_our_port; |
| |
| static void sntp_send(void) |
| { |
| struct sntp_pkt_t pkt; |
| int pktlen = SNTP_PACKET_LEN; |
| int sport; |
| |
| debug("%s\n", __func__); |
| |
| memset(&pkt, 0, sizeof(pkt)); |
| |
| pkt.li = NTP_LI_NOLEAP; |
| pkt.vn = NTP_VERSION; |
| pkt.mode = NTP_MODE_CLIENT; |
| |
| memcpy((char *)net_tx_packet + net_eth_hdr_size() + IP_UDP_HDR_SIZE, |
| (char *)&pkt, pktlen); |
| |
| sntp_our_port = 10000 + (get_timer(0) % 4096); |
| sport = NTP_SERVICE_PORT; |
| |
| net_send_udp_packet(net_server_ethaddr, net_ntp_server, sport, |
| sntp_our_port, pktlen); |
| } |
| |
| static void sntp_timeout_handler(void) |
| { |
| puts("Timeout\n"); |
| net_set_state(NETLOOP_FAIL); |
| return; |
| } |
| |
| static void sntp_handler(uchar *pkt, unsigned dest, struct in_addr sip, |
| unsigned src, unsigned len) |
| { |
| struct sntp_pkt_t *rpktp = (struct sntp_pkt_t *)pkt; |
| struct rtc_time tm; |
| ulong seconds; |
| |
| debug("%s\n", __func__); |
| |
| if (dest != sntp_our_port) |
| 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 + net_ntp_time_offset, &tm); |
| #if defined(CONFIG_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); |
| |
| net_set_state(NETLOOP_SUCCESS); |
| } |
| |
| void sntp_start(void) |
| { |
| debug("%s\n", __func__); |
| |
| net_set_timeout_handler(SNTP_TIMEOUT, sntp_timeout_handler); |
| net_set_udp_handler(sntp_handler); |
| memset(net_server_ethaddr, 0, sizeof(net_server_ethaddr)); |
| |
| sntp_send(); |
| } |