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csantifort |
/*----------------------------------------------------------------
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// //
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// boot-loader.h //
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// //
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// This file is part of the Amber project //
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// http://www.opencores.org/project,amber //
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// //
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// Description //
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// Defines for the boot-loader application. //
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// //
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// Author(s): //
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// - Conor Santifort, csantifort.amber@gmail.com //
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// //
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//////////////////////////////////////////////////////////////////
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// //
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// Copyright (C) 2010 Authors and OPENCORES.ORG //
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// //
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// This source file may be used and distributed without //
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// restriction provided that this copyright statement is not //
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// removed from the file and that any derivative work contains //
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// the original copyright notice and the associated disclaimer. //
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// //
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// This source file is free software; you can redistribute it //
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// and/or modify it under the terms of the GNU Lesser General //
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// Public License as published by the Free Software Foundation; //
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// either version 2.1 of the License, or (at your option) any //
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// later version. //
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// //
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// This source is distributed in the hope that it will be //
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// useful, but WITHOUT ANY WARRANTY; without even the implied //
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// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR //
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// PURPOSE. See the GNU Lesser General Public License for more //
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// details. //
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// //
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// You should have received a copy of the GNU Lesser General //
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// Public License along with this source; if not, download it //
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// from http://www.opencores.org/lgpl.shtml //
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// //
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----------------------------------------------------------------*/
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#define TELNET_PORT 23
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#define MAX_PACKET_SIZE 2000
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#define ETHMAC_RX_BUFFERS 8
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#define TCP_TX_BUFFERS 256
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#define TELNET_WILL 251
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#define TELNET_WONT 252
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#define TELNET_DO 253
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#define TELNET_DONT 254
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#define UDP_READ 1
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#define UDP_WRITE 2
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#define UDP_DATA 3
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#define UDP_ACK 4
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#define UDP_ERROR 5
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/* Generic MII registers. */
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/* Taken from kernel source file include/linux/mii.h */
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#define MII_BMCR 0x00 /* Basic mode control register */
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#define MII_BMSR 0x01 /* Basic mode status register */
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#define MII_PHYSID1 0x02 /* PHYS ID 1 */
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#define MII_PHYSID2 0x03 /* PHYS ID 2 */
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#define MII_ADVERTISE 0x04 /* Advertisement control reg */
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#define MII_LPA 0x05 /* Link partner ability reg */
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#define MII_EXPANSION 0x06 /* Expansion register */
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#define MII_CTRL1000 0x09 /* 1000BASE-T control */
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#define MII_STAT1000 0x0a /* 1000BASE-T status */
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#define MII_ESTATUS 0x0f /* Extended Status */
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#define MII_DCOUNTER 0x12 /* Disconnect counter */
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#define MII_FCSCOUNTER 0x13 /* False carrier counter */
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#define MII_NWAYTEST 0x14 /* N-way auto-neg test reg */
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#define MII_RERRCOUNTER 0x15 /* Receive error counter */
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#define MII_SREVISION 0x16 /* Silicon revision */
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#define MII_RESV1 0x17 /* Reserved... */
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#define MII_LBRERROR 0x18 /* Lpback, rx, bypass error */
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#define MII_PHYADDR 0x19 /* PHY address */
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#define MII_RESV2 0x1a /* Reserved... */
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#define MII_TPISTATUS 0x1b /* TPI status for 10mbps */
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#define MII_NCONFIG 0x1c /* Network interface config */
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/* Basic mode control register. */
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/* Taken from kernel source file include/linux/mii.h */
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#define BMCR_RESV 0x003f /* Unused... */
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#define BMCR_SPEED1000 0x0040 /* MSB of Speed (1000) */
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#define BMCR_CTST 0x0080 /* Collision test */
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#define BMCR_FULLDPLX 0x0100 /* Full duplex */
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#define BMCR_ANRESTART 0x0200 /* Auto negotiation restart */
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#define BMCR_ISOLATE 0x0400 /* Disconnect DP83840 from MII */
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#define BMCR_PDOWN 0x0800 /* Powerdown the DP83840 */
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#define BMCR_ANENABLE 0x1000 /* Enable auto negotiation */
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#define BMCR_SPEED100 0x2000 /* Select 100Mbps */
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#define BMCR_LOOPBACK 0x4000 /* TXD loopback bits */
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#define BMCR_RESET 0x8000 /* Reset the DP83840 */
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/* Basic mode status register. */
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/* Taken from kernel source file include/linux/mii.h */
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#define BMSR_ERCAP 0x0001 /* Ext-reg capability */
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#define BMSR_JCD 0x0002 /* Jabber detected */
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#define BMSR_LSTATUS 0x0004 /* Link status */
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#define BMSR_ANEGCAPABLE 0x0008 /* Able to do auto-negotiation */
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#define BMSR_RFAULT 0x0010 /* Remote fault detected */
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#define BMSR_ANEGCOMPLETE 0x0020 /* Auto-negotiation complete */
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#define BMSR_RESV 0x00c0 /* Unused... */
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#define BMSR_ESTATEN 0x0100 /* Extended Status in R15 */
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#define BMSR_100HALF2 0x0200 /* Can do 100BASE-T2 HDX */
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#define BMSR_100FULL2 0x0400 /* Can do 100BASE-T2 FDX */
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#define BMSR_10HALF 0x0800 /* Can do 10mbps, half-duplex */
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#define BMSR_10FULL 0x1000 /* Can do 10mbps, full-duplex */
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#define BMSR_100HALF 0x2000 /* Can do 100mbps, half-duplex */
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#define BMSR_100FULL 0x4000 /* Can do 100mbps, full-duplex */
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#define BMSR_100BASE4 0x8000 /* Can do 100mbps, 4k packets */
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typedef struct {
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unsigned char mac[6];
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unsigned char ip[4];
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} mac_ip_t;
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typedef struct {
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unsigned int payload_valid;
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unsigned int starting_seq;
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unsigned int ending_seq;
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unsigned int len_bytes;
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unsigned int ack_received;
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time_t resend_time;
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char buf[MAX_PACKET_SIZE];
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} packet_buffer_t;
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typedef struct {
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/* Ethernet */
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unsigned char src_mac[6];
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unsigned char dst_mac[6];
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unsigned int eth_type;
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/* IPv4 */
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unsigned char src_ip[4];
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unsigned char dst_ip[4];
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unsigned int ip_len; // IP; in bytres
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unsigned int ip_header_len; // IP; in 32-bit words
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unsigned int ip_proto;
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/* TCP */
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unsigned int tcp_src_port;
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unsigned int tcp_dst_port;
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unsigned int tcp_hdr_len;
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unsigned int tcp_seq;
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unsigned int tcp_ack;
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unsigned int tcp_flags;
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unsigned int tcp_window_size;
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unsigned int tcp_len;
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unsigned int tcp_payload_len;
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unsigned int tcp_src_time_stamp;
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/* Telnet */
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unsigned int telnet_payload_len;
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} packet_t;
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typedef struct {
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packet_buffer_t** tcp_buf;
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int tcp_current_buf;
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/* Telnet rx and tx line buffers */
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line_buf_t* telnet_rxbuf;
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line_buf_t* telnet_txbuf;
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int telnet_sent_opening_message;
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int telnet_echo_mode;
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int telnet_connection_state;
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int telnet_options_sent;
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int packets_sent;
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int packets_received;
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int packets_resent;
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int tcp_connection_state;
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int tcp_reset;
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int tcp_disconnect;
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int tcp_seq; /* should be random initial seq number for tcp */
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int tcp_last_seq;
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unsigned int tcp_last_ack;
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int id;
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packet_t* rx_packet; /* Header info from last packet received */
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} socket_t;
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/* Enumerated types */
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enum mdi_ctrl {
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mdi_write = 0x04000000,
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mdi_read = 0x08000000,
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mdi_ready = 0x10000000,
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};
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enum telnet_state {
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TELNET_CLOSED = 0,
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TELNET_OPEN = 1
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};
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/* Global Variables */
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extern mac_ip_t self_g;
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extern packet_t* rx_packet_g;
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extern socket_t* socket0_g;
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extern socket_t* socket1_g;
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/* Functions */
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void init_packet_buffers (socket_t*);
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unsigned short header_checksum16 (unsigned char *buf, unsigned short len, unsigned int sum);
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void arp_reply (char *buf, mac_ip_t*);
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void ping_reply (packet_t* packet0, int ping_id, int ping_seq, char * rx_buf);
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void ethernet_header (char *buf, mac_ip_t* target, unsigned short type);
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void ip_header (char *buf, mac_ip_t* target, unsigned short ip_len, char ip_proto);
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void parse_rx_packet (char*, packet_t*);
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void parse_arp_packet (char*);
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void parse_ip_packet (char*, packet_t*);
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void parse_ping_packet (char*, packet_t*);
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socket_t* init_socket (int);
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