diff options
| -rw-r--r-- | CHANGELOG | 3 | ||||
| -rw-r--r-- | common/devices.c | 3 | ||||
| -rw-r--r-- | doc/README.NetConsole | 68 | ||||
| -rw-r--r-- | drivers/Makefile | 2 | ||||
| -rw-r--r-- | drivers/netconsole.c | 204 | ||||
| -rw-r--r-- | include/configs/TQM860L.h | 2 | ||||
| -rw-r--r-- | include/devices.h | 3 | ||||
| -rw-r--r-- | include/net.h | 3 | ||||
| -rw-r--r-- | net/net.c | 22 |
9 files changed, 308 insertions, 2 deletions
@@ -2,6 +2,9 @@ Changes since U-Boot 1.1.1: ====================================================================== +* Add support for console over UDP (compatible to Ingo Molnar's + netconsole patch under Linux) + * Patch by Jon Loeliger, 16 Jul 2004: - support larger DDR memories up to 2G on the PC8540/8560ADS and STXGP3 boards diff --git a/common/devices.c b/common/devices.c index b37c99a69..bd4dfa024 100644 --- a/common/devices.c +++ b/common/devices.c @@ -201,6 +201,9 @@ int devices_init (void) #ifdef CONFIG_USB_TTY drv_usbtty_init (); #endif +#ifdef CONFIG_NETCONSOLE + drv_nc_init (); +#endif return (0); } diff --git a/doc/README.NetConsole b/doc/README.NetConsole new file mode 100644 index 000000000..8dc0d2919 --- /dev/null +++ b/doc/README.NetConsole @@ -0,0 +1,68 @@ + +In U-Boot, we implemented the networked console via the standard +"devices" mechanism, which means that you can switch between the +serial and network input/output devices by adjusting the 'stdin' and +'stdout' environment variables. To switch to the networked console, +set either of these variables to "nc". Input and output can be +switched independently. + +On the host side, please use this script to access the console: + ++++++++++++++++++++++++++++++++++++++++++++ +#! /bin/bash + +TARGET_IP=$1 + +stty -icanon -echo intr ^T +nc -u -l -p 6666 < /dev/null & +nc -u ${TARGET_IP} 6666 +stty icanon echo intr ^C ++++++++++++++++++++++++++++++++++++++++++++ + +For Linux, the network-based console needs special configuration. +Minimally, the host IP address needs to be specified. This can be +done either via the kernel command line, or by passing parameters +while loading the netconsole.o module (when used in a loadable module +configuration). Please refer to Documentation/networking/logging.txt +file for the original Ingo Molnar's documentation on how to pass +parameters to the loadable module. + +The format of the kernel command line parameter (for the static +configuration) is as follows: + + netconsole=[src-port]@[src-ip]/[<dev>],[tgt-port]@<tgt-ip>/[tgt-macaddr] + +where + + src-port source for UDP packets + (defaults to 6665) + src-ip source IP to use + (defaults to the interface's address) + dev network interface + (defaults to eth0) + tgt-port port for logging agent + (defaults to 6666) + tgt-ip IP address for logging agent + (this is the required parameter) + tgt-macaddr ethernet MAC address for logging agent + (defaults to broadcast) + +Examples: + + netconsole=4444@10.0.0.1/eth1,9353@10.0.0.2/12:34:56:78:9a:bc + +or + + netconsole=@/,@192.168.3.1/ + +Please note that for the Linux networked console to work, the +ethernet interface has to be up by the time the netconsole driver is +initialized. This means that in case of static kernel configuration, +the respective Ethernet interface has to be brought up using the "IP +Autoconfiguration" kernel feature, which is usually done by defaults +in the ELDK-NFS-based environment. + +To browse the Linux network console output, use the 'netcat' tool invoked +as follows: + + nc -u -l -p 6666 diff --git a/drivers/Makefile b/drivers/Makefile index afca70e2d..5f221582a 100644 --- a/drivers/Makefile +++ b/drivers/Makefile @@ -32,7 +32,7 @@ OBJS = 3c589.o 5701rls.o ali512x.o \ cs8900.o ct69000.o dataflash.o dc2114x.o dm9000x.o \ e1000.o eepro100.o \ i8042.o i82365.o inca-ip_sw.o keyboard.o \ - lan91c96.o natsemi.o netarm_eth.o \ + lan91c96.o natsemi.o netarm_eth.o netconsole.o \ ns16550.o ns8382x.o ns87308.o omap1510_i2c.o \ pci.o pci_auto.o pci_indirect.o \ pcnet.o plb2800_eth.o \ diff --git a/drivers/netconsole.c b/drivers/netconsole.c new file mode 100644 index 000000000..7e1916132 --- /dev/null +++ b/drivers/netconsole.c @@ -0,0 +1,204 @@ +/* + * (C) Copyright 2004 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> + +#ifdef CONFIG_NETCONSOLE + +#include <command.h> +#include <devices.h> +#include <net.h> + +#ifndef CONFIG_NET_MULTI +#error define CONFIG_NET_MULTI to use netconsole +#endif + +static uchar nc_buf = 0; /* input buffer */ +static int input_recursion = 0; +static int output_recursion = 0; +static int net_timeout; + +static void nc_wait_arp_handler (uchar * pkt, unsigned dest, unsigned src, + unsigned len) +{ + NetState = NETLOOP_SUCCESS; /* got arp reply - quit net loop */ +} + +static void nc_handler (uchar * pkt, unsigned dest, unsigned src, + unsigned len) +{ + if (nc_buf) + NetState = NETLOOP_SUCCESS; /* got input - quit net loop */ +} + +static void nc_timeout (void) +{ + NetState = NETLOOP_SUCCESS; +} + +void NcStart (void) +{ + if (memcmp (NetServerEther, NetEtherNullAddr, 6)) { + /* going to check for input packet */ + NetSetHandler (nc_handler); + NetSetTimeout (net_timeout, nc_timeout); + } else { + /* send arp request */ + NetSetHandler (nc_wait_arp_handler); + NetSendUDPPacket (NetServerEther, NetServerIP, 6665, 6666, 0); + } +} + +int nc_input_packet (uchar * pkt, unsigned dest, unsigned src, unsigned len) +{ + if (dest != 6666 || !len) + return 0; /* not for us */ + + nc_buf = *pkt; + return 1; +} + +static void nc_send_packet (const char *buf, int len) +{ + DECLARE_GLOBAL_DATA_PTR; + + struct eth_device *eth; + int inited = 0; + uchar *pkt; + + if (!memcmp (NetServerEther, NetEtherNullAddr, 6)) + return; + + if ((eth = eth_get_dev ()) == NULL) { + return; + } + + if (eth->state != ETH_STATE_ACTIVE) { + if (eth_init (gd->bd) < 0) + return; + inited = 1; + } + pkt = (uchar *) NetTxPacket + NetEthHdrSize () + IP_HDR_SIZE; + memcpy (pkt, buf, len); + NetSendUDPPacket (NetServerEther, NetServerIP, 6666, 6665, len); + + if (inited) + eth_halt (); +} + +int nc_start (void) +{ + if (memcmp (NetServerEther, NetEtherNullAddr, 6)) + return 0; + + return NetLoop (NETCONS); /* wait for arp reply */ +} + +void nc_putc (char c) +{ + if (output_recursion) + return; + output_recursion = 1; + + nc_send_packet (&c, 1); + + output_recursion = 0; +} + +void nc_puts (const char *s) +{ + if (output_recursion) + return; + output_recursion = 1; + + int len = strlen (s); + + if (len > 512) + len = 512; + + nc_send_packet (s, len); + + output_recursion = 0; +} + +int nc_getc (void) +{ + input_recursion = 1; + + net_timeout = 0; /* no timeout */ + while (!nc_buf) + NetLoop (NETCONS); + + input_recursion = 0; + + uchar tmp = nc_buf; + + nc_buf = 0; + return tmp; +} + +int nc_tstc (void) +{ + struct eth_device *eth; + + if (input_recursion) + return 0; + + if (nc_buf) + return 1; + + eth = eth_get_dev (); + if (eth && eth->state == ETH_STATE_ACTIVE) + return 0; /* inside net loop */ + + input_recursion = 1; + + net_timeout = 1; + NetLoop (NETCONS); /* kind of poll */ + + input_recursion = 0; + + return nc_buf != 0; +} + +int drv_nc_init (void) +{ + device_t dev; + int rc; + + memset (&dev, 0, sizeof (dev)); + + strcpy (dev.name, "nc"); + dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM; + dev.start = nc_start; + dev.putc = nc_putc; + dev.puts = nc_puts; + dev.getc = nc_getc; + dev.tstc = nc_tstc; + + rc = device_register (&dev); + + return (rc == 0) ? 1 : rc; +} + +#endif /* CONFIG_NETCONSOLE */ diff --git a/include/configs/TQM860L.h b/include/configs/TQM860L.h index adac808e7..bc0f7c7f7 100644 --- a/include/configs/TQM860L.h +++ b/include/configs/TQM860L.h @@ -97,6 +97,8 @@ CFG_CMD_IDE | \ CFG_CMD_DATE ) +#define CONFIG_NETCONSOLE + /* this must be included AFTER the definition of CONFIG_COMMANDS (if any) */ #include <cmd_confdefs.h> diff --git a/include/devices.h b/include/devices.h index 09c2c5f51..2d9e282e3 100644 --- a/include/devices.h +++ b/include/devices.h @@ -108,5 +108,8 @@ int drv_keyboard_init (void); #ifdef CONFIG_USB_TTY int drv_usbtty_init (void); #endif +#ifdef CONFIG_NETCONSOLE +int drv_nc_init (void); +#endif #endif /* _DEVICES_H_ */ diff --git a/include/net.h b/include/net.h index 68f5fea3e..5a6b8083b 100644 --- a/include/net.h +++ b/include/net.h @@ -314,6 +314,7 @@ extern volatile uchar * NetRxPkt; /* Current receive packet */ extern int NetRxPktLen; /* Current rx packet length */ extern unsigned NetIPID; /* IP ID (counting) */ extern uchar NetBcastAddr[6]; /* Ethernet boardcast address */ +extern uchar NetEtherNullAddr[6]; #define VLAN_NONE 4095 /* untagged */ #define VLAN_IDMASK 0x0fff /* mask of valid vlan id */ @@ -334,7 +335,7 @@ extern int NetState; /* Network loop state */ extern int NetRestartWrap; /* Tried all network devices */ #endif -typedef enum { BOOTP, RARP, ARP, TFTP, DHCP, PING, DNS, NFS, CDP } proto_t; +typedef enum { BOOTP, RARP, ARP, TFTP, DHCP, PING, DNS, NFS, CDP, NETCONS } proto_t; /* from net/net.c */ extern char BootFile[128]; /* Boot File name */ @@ -148,6 +148,11 @@ static void PingStart(void); static void CDPStart(void); #endif +#ifdef CONFIG_NETCONSOLE +void NcStart(void); +int nc_input_packet(uchar *pkt, unsigned dest, unsigned src, unsigned len); +#endif + volatile uchar PktBuf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN]; volatile uchar *NetRxPackets[PKTBUFSRX]; /* Receive packets */ @@ -308,6 +313,7 @@ restart: #if (CONFIG_COMMANDS & CFG_CMD_PING) case PING: #endif + case NETCONS: case TFTP: NetCopyIP(&NetOurIP, &bd->bi_ip_addr); NetOurGatewayIP = getenv_IPaddr ("gatewayip"); @@ -319,6 +325,7 @@ restart: #if (CONFIG_COMMANDS & CFG_CMD_NFS) case NFS: #endif + case NETCONS: case TFTP: NetServerIP = getenv_IPaddr ("serverip"); break; @@ -404,6 +411,11 @@ restart: CDPStart(); break; #endif +#ifdef CONFIG_NETCONSOLE + case NETCONS: + NcStart(); + break; +#endif default: break; } @@ -1259,6 +1271,9 @@ NetReceive(volatile uchar * inpkt, int len) /* save address for later use */ memcpy(NetArpWaitPacketMAC, &arp->ar_data[0], 6); +#ifdef CONFIG_NETCONSOLE + (*packetHandler)(0,0,0,0); +#endif /* modify header, and transmit it */ memcpy(((Ethernet_t *)NetArpWaitTxPacket)->et_dest, NetArpWaitPacketMAC, 6); (void) eth_send(NetArpWaitTxPacket, NetArpWaitTxPacketSize); @@ -1377,6 +1392,12 @@ NetReceive(volatile uchar * inpkt, int len) return; } +#ifdef CONFIG_NETCONSOLE + nc_input_packet((uchar *)ip +IP_HDR_SIZE, + ntohs(ip->udp_dst), + ntohs(ip->udp_src), + ntohs(ip->udp_len) - 8); +#endif /* * IP header OK. Pass the packet to the current handler. */ @@ -1406,6 +1427,7 @@ static int net_check_prereq (proto_t protocol) #if (CONFIG_COMMANDS & CFG_CMD_NFS) case NFS: #endif + case NETCONS: case TFTP: if (NetServerIP == 0) { puts ("*** ERROR: `serverip' not set\n"); |