int
rarp (void)
{
int retry;
struct arprequest rarpreq;
if (! eth_probe ())
return 0;
network_ready = 0;
grub_memset (&rarpreq, 0, sizeof (rarpreq));
rarpreq.hwtype = htons (1);
rarpreq.protocol = htons (IP);
rarpreq.hwlen = ETH_ALEN;
rarpreq.protolen = 4;
rarpreq.opcode = htons (RARP_REQUEST);
grub_memmove ((char *) &rarpreq.shwaddr, arptable[ARP_CLIENT].node,
ETH_ALEN);
grub_memmove ((char *) &rarpreq.thwaddr, arptable[ARP_CLIENT].node,
ETH_ALEN);
for (retry = 0; retry < MAX_ARP_RETRIES; ++retry)
{
long timeout;
eth_transmit (broadcast, RARP, sizeof (rarpreq), &rarpreq);
timeout = rfc2131_sleep_interval (TIMEOUT, retry);
if (await_reply (AWAIT_RARP, 0, rarpreq.shwaddr, timeout))
break;
if (ip_abort)
return 0;
}
if (retry < MAX_ARP_RETRIES)
{
network_ready = 1;
return 1;
}
return 0;
}
int
rarp (void)
{
int retry;
/* arp and rarp requests share the same packet structure. */
struct arprequest rarpreq;
/* Make sure that an ethernet is probed. */
if (! eth_probe ())
return 0;
/* Clear the ready flag. */
network_ready = 0;
grub_memset (&rarpreq, 0, sizeof (rarpreq));
rarpreq.hwtype = htons (1);
rarpreq.protocol = htons (IP);
rarpreq.hwlen = ETH_ALEN;
rarpreq.protolen = 4;
rarpreq.opcode = htons (RARP_REQUEST);
grub_memmove ((char *) &rarpreq.shwaddr, arptable[ARP_CLIENT].node,
ETH_ALEN);
/* sipaddr is already zeroed out */
grub_memmove ((char *) &rarpreq.thwaddr, arptable[ARP_CLIENT].node,
ETH_ALEN);
/* tipaddr is already zeroed out */
for (retry = 0; retry < MAX_ARP_RETRIES; ++retry)
{
long timeout;
eth_transmit (broadcast, RARP, sizeof (rarpreq), &rarpreq);
timeout = rfc2131_sleep_interval (TIMEOUT, retry);
if (await_reply (AWAIT_RARP, 0, rarpreq.shwaddr, timeout))
break;
if (ip_abort)
return 0;
}
if (retry < MAX_ARP_RETRIES)
{
network_ready = 1;
return 1;
}
return 0;
}
/**************************************************************************
MAIN - Kick off routine
**************************************************************************/
main()
{
int c;
extern char edata[], end[];
bzero(edata,end-edata); /* Zero BSS */
#ifdef ASK_BOOT
while (1) {
printf("\nBoot from Network (Y/N) ? ");
c = getchar();
if ((c >= 'a') && (c <= 'z')) c &= 0x5F;
if (c == '\r') break;
putchar(c);
if (c == 'N')
exit(0);
if (c == 'Y')
break;
printf(" - bad response\n");
}
#endif
/* get the bios's idea about the disks geometry */
#ifdef PC98
for(c = 0; c < 2; c ++) {
if (*(unsigned char*)0xa155d & (1 << c)) { /* check DISK_EQUIP */
bootinfo.bi_bios_geom[c] = get_diskinfo(c + 0x80);
}
}
#else /* IBM-PC */
for(c = 0; c < N_BIOS_GEOM; c ++)
bootinfo.bi_bios_geom[c] = get_diskinfo(c + 0x80);
#endif /* PC98 */
gateA20();
#ifdef PC98
/* set machine type to PC98_SYSTEM_PARAMETER */
machine_check();
#endif
printf("\nBOOTP/TFTP/NFS bootstrap loader ESC for menu\n"
"\nSearching for adapter...");
if (!eth_probe()) {
printf("No adapter found.\n");
exit(0);
}
kernel = DEFAULT_BOOTFILE;
while (1) {
if (setjmp(jmp_bootmenu))
bootmenu();
else
load();
}
}
void
print_network_configuration (void)
{
if (! eth_probe ())
grub_printf ("No ethernet card found.\n");
else if (! network_ready)
grub_printf ("Not initialized yet.\n");
else
{
etherboot_printf ("Address: %@\n", arptable[ARP_CLIENT].ipaddr.s_addr);
etherboot_printf ("Netmask: %@\n", netmask);
etherboot_printf ("Server: %@\n", arptable[ARP_SERVER].ipaddr.s_addr);
etherboot_printf ("Gateway: %@\n", arptable[ARP_GATEWAY].ipaddr.s_addr);
}
}
int
bootp (void)
{
int retry;
#ifndef NO_DHCP_SUPPORT
int reqretry;
#endif
struct bootpip_t ip;
unsigned long starttime;
if (! eth_probe ())
return 0;
network_ready = 0;
#ifdef DEBUG
grub_printf ("network is ready.\n");
#endif
grub_memset (&ip, 0, sizeof (struct bootpip_t));
ip.bp.bp_op = BOOTP_REQUEST;
ip.bp.bp_htype = 1;
ip.bp.bp_hlen = ETH_ALEN;
starttime = currticks ();
grub_memmove (&xid, &arptable[ARP_CLIENT].node[2], sizeof(xid));
ip.bp.bp_xid = xid += htonl (starttime);
grub_memmove (ip.bp.bp_hwaddr, arptable[ARP_CLIENT].node, ETH_ALEN);
#ifdef DEBUG
etherboot_printf ("bp_op = %d\n", ip.bp.bp_op);
etherboot_printf ("bp_htype = %d\n", ip.bp.bp_htype);
etherboot_printf ("bp_hlen = %d\n", ip.bp.bp_hlen);
etherboot_printf ("bp_xid = %d\n", ip.bp.bp_xid);
etherboot_printf ("bp_hwaddr = %!\n", ip.bp.bp_hwaddr);
etherboot_printf ("bp_hops = %d\n", (int) ip.bp.bp_hops);
etherboot_printf ("bp_secs = %d\n", (int) ip.bp.bp_hwaddr);
#endif
#ifdef NO_DHCP_SUPPORT
grub_memmove (ip.bp.bp_vend, rfc1533_cookie, 5);
#else
grub_memmove (ip.bp.bp_vend, rfc1533_cookie, sizeof rfc1533_cookie);
grub_memmove (ip.bp.bp_vend + sizeof rfc1533_cookie, dhcpdiscover,
sizeof dhcpdiscover);
grub_memmove (ip.bp.bp_vend + sizeof rfc1533_cookie + sizeof dhcpdiscover,
rfc1533_end, sizeof rfc1533_end);
#endif
for (retry = 0; retry < MAX_BOOTP_RETRIES;)
{
long timeout;
#ifdef DEBUG
grub_printf ("retry = %d\n", retry);
#endif
await_reply (AWAIT_QDRAIN, 0, NULL, 0);
udp_transmit (IP_BROADCAST, BOOTP_CLIENT, BOOTP_SERVER,
sizeof (struct bootpip_t), &ip);
timeout = rfc2131_sleep_interval (TIMEOUT, retry++);
#ifdef NO_DHCP_SUPPORT
if (await_reply (AWAIT_BOOTP, 0, NULL, timeout))
{
network_ready = 1;
return 1;
}
#else
if (await_reply (AWAIT_BOOTP, 0, NULL, timeout))
{
if (dhcp_reply != DHCPOFFER)
{
network_ready = 1;
return 1;
}
dhcp_reply = 0;
#ifdef DEBUG
etherboot_printf ("bp_op = %d\n", (int) ip.bp.bp_op);
etherboot_printf ("bp_htype = %d\n", (int) ip.bp.bp_htype);
etherboot_printf ("bp_hlen = %d\n", (int) ip.bp.bp_hlen);
etherboot_printf ("bp_xid = %d\n", (int) ip.bp.bp_xid);
etherboot_printf ("bp_hwaddr = %!\n", ip.bp.bp_hwaddr);
etherboot_printf ("bp_hops = %d\n", (int) ip.bp.bp_hops);
etherboot_printf ("bp_secs = %d\n", (int) ip.bp.bp_hwaddr);
#endif
grub_memmove (ip.bp.bp_vend, rfc1533_cookie, sizeof rfc1533_cookie);
grub_memmove (ip.bp.bp_vend + sizeof rfc1533_cookie,
dhcprequest, sizeof dhcprequest);
grub_memmove (ip.bp.bp_vend + sizeof rfc1533_cookie
+ sizeof dhcprequest,
rfc1533_end, sizeof rfc1533_end);
grub_memmove (ip.bp.bp_vend + 9, (char *) &dhcp_server,
sizeof (in_addr));
grub_memmove (ip.bp.bp_vend + 15, (char *) &dhcp_addr,
sizeof (in_addr));
#ifdef DEBUG
grub_printf ("errnum = %d\n", errnum);
#endif
for (reqretry = 0; reqretry < MAX_BOOTP_RETRIES;)
{
int ret;
#ifdef DEBUG
grub_printf ("reqretry = %d\n", reqretry);
#endif
ret = udp_transmit (IP_BROADCAST, BOOTP_CLIENT, BOOTP_SERVER,
sizeof (struct bootpip_t), &ip);
if (! ret)
grub_printf ("udp_transmit failed.\n");
dhcp_reply = 0;
timeout = rfc2131_sleep_interval (TIMEOUT, reqretry++);
if (await_reply (AWAIT_BOOTP, 0, NULL, timeout))
if (dhcp_reply == DHCPACK)
{
network_ready = 1;
return 1;
}
#ifdef DEBUG
grub_printf ("dhcp_reply = %d\n", dhcp_reply);
#endif
if (ip_abort)
return 0;
}
}
#endif
if (ip_abort)
return 0;
ip.bp.bp_secs = htons ((currticks () - starttime) / TICKS_PER_SEC);
}
return 0;
}
int
bootp (void)
{
int retry;
#ifndef NO_DHCP_SUPPORT
int reqretry;
#endif /* ! NO_DHCP_SUPPORT */
struct bootpip_t ip;
unsigned long starttime;
/* Make sure that an ethernet is probed. */
if (! eth_probe ())
return 0;
/* Clear the ready flag. */
network_ready = 0;
#ifdef DEBUG
grub_printf ("network is ready.\n");
#endif
grub_memset (&ip, 0, sizeof (struct bootpip_t));
ip.bp.bp_op = BOOTP_REQUEST;
ip.bp.bp_htype = 1;
ip.bp.bp_hlen = ETH_ALEN;
starttime = currticks ();
/* Use lower 32 bits of node address, more likely to be
distinct than the time since booting */
grub_memmove (&xid, &arptable[ARP_CLIENT].node[2], sizeof(xid));
ip.bp.bp_xid = xid += htonl (starttime);
grub_memmove (ip.bp.bp_hwaddr, arptable[ARP_CLIENT].node, ETH_ALEN);
#ifdef DEBUG
etherboot_printf ("bp_op = %d\n", ip.bp.bp_op);
etherboot_printf ("bp_htype = %d\n", ip.bp.bp_htype);
etherboot_printf ("bp_hlen = %d\n", ip.bp.bp_hlen);
etherboot_printf ("bp_xid = %d\n", ip.bp.bp_xid);
etherboot_printf ("bp_hwaddr = %!\n", ip.bp.bp_hwaddr);
etherboot_printf ("bp_hops = %d\n", (int) ip.bp.bp_hops);
etherboot_printf ("bp_secs = %d\n", (int) ip.bp.bp_hwaddr);
#endif
#ifdef NO_DHCP_SUPPORT
/* Request RFC-style options. */
grub_memmove (ip.bp.bp_vend, rfc1533_cookie, 5);
#else
/* Request RFC-style options. */
grub_memmove (ip.bp.bp_vend, rfc1533_cookie, sizeof rfc1533_cookie);
grub_memmove (ip.bp.bp_vend + sizeof rfc1533_cookie, dhcpdiscover,
sizeof dhcpdiscover);
grub_memmove (ip.bp.bp_vend + sizeof rfc1533_cookie + sizeof dhcpdiscover,
rfc1533_end, sizeof rfc1533_end);
#endif /* ! NO_DHCP_SUPPORT */
for (retry = 0; retry < MAX_BOOTP_RETRIES;)
{
long timeout;
#ifdef DEBUG
grub_printf ("retry = %d\n", retry);
#endif
/* Clear out the Rx queue first. It contains nothing of
* interest, except possibly ARP requests from the DHCP/TFTP
* server. We use polling throughout Etherboot, so some time
* may have passed since we last polled the receive queue,
* which may now be filled with broadcast packets. This will
* cause the reply to the packets we are about to send to be
* lost immediately. Not very clever. */
await_reply (AWAIT_QDRAIN, 0, NULL, 0);
udp_transmit (IP_BROADCAST, BOOTP_CLIENT, BOOTP_SERVER,
sizeof (struct bootpip_t), &ip);
timeout = rfc2131_sleep_interval (TIMEOUT, retry++);
#ifdef NO_DHCP_SUPPORT
if (await_reply (AWAIT_BOOTP, 0, NULL, timeout))
{
network_ready = 1;
return 1;
}
#else /* ! NO_DHCP_SUPPORT */
if (await_reply (AWAIT_BOOTP, 0, NULL, timeout))
{
if (dhcp_reply != DHCPOFFER)
{
network_ready = 1;
return 1;
}
dhcp_reply = 0;
#ifdef DEBUG
etherboot_printf ("bp_op = %d\n", (int) ip.bp.bp_op);
etherboot_printf ("bp_htype = %d\n", (int) ip.bp.bp_htype);
etherboot_printf ("bp_hlen = %d\n", (int) ip.bp.bp_hlen);
etherboot_printf ("bp_xid = %d\n", (int) ip.bp.bp_xid);
etherboot_printf ("bp_hwaddr = %!\n", ip.bp.bp_hwaddr);
etherboot_printf ("bp_hops = %d\n", (int) ip.bp.bp_hops);
etherboot_printf ("bp_secs = %d\n", (int) ip.bp.bp_hwaddr);
#endif
grub_memmove (ip.bp.bp_vend, rfc1533_cookie, sizeof rfc1533_cookie);
grub_memmove (ip.bp.bp_vend + sizeof rfc1533_cookie,
dhcprequest, sizeof dhcprequest);
grub_memmove (ip.bp.bp_vend + sizeof rfc1533_cookie
+ sizeof dhcprequest,
rfc1533_end, sizeof rfc1533_end);
grub_memmove (ip.bp.bp_vend + 9, (char *) &dhcp_server,
sizeof (in_addr));
grub_memmove (ip.bp.bp_vend + 15, (char *) &dhcp_addr,
sizeof (in_addr));
#ifdef DEBUG
grub_printf ("errnum = %d\n", errnum);
#endif
for (reqretry = 0; reqretry < MAX_BOOTP_RETRIES;)
{
int ret;
#ifdef DEBUG
grub_printf ("reqretry = %d\n", reqretry);
#endif
ret = udp_transmit (IP_BROADCAST, BOOTP_CLIENT, BOOTP_SERVER,
sizeof (struct bootpip_t), &ip);
if (! ret)
grub_printf ("udp_transmit failed.\n");
dhcp_reply = 0;
timeout = rfc2131_sleep_interval (TIMEOUT, reqretry++);
if (await_reply (AWAIT_BOOTP, 0, NULL, timeout))
if (dhcp_reply == DHCPACK)
{
network_ready = 1;
return 1;
}
#ifdef DEBUG
grub_printf ("dhcp_reply = %d\n", dhcp_reply);
#endif
if (ip_abort)
return 0;
}
}
#endif /* ! NO_DHCP_SUPPORT */
if (ip_abort)
return 0;
ip.bp.bp_secs = htons ((currticks () - starttime) / TICKS_PER_SEC);
}
/* Timeout. */
return 0;
}
