Add support for console over UDP (compatible to Ingo Molnar's
netconsole patch under Linux)
diff --git a/CHANGELOG b/CHANGELOG
index 02447d3..4470f8c 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -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 b37c99a..bd4dfa0 100644
--- a/common/devices.c
+++ b/common/devices.c
@@ -201,6 +201,9 @@
#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 0000000..8dc0d29
--- /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 afca70e..5f22158 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -32,7 +32,7 @@
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 0000000..7e19161
--- /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 adac808..bc0f7c7 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 09c2c5f..2d9e282 100644
--- a/include/devices.h
+++ b/include/devices.h
@@ -108,5 +108,8 @@
#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 68f5fea..5a6b808 100644
--- a/include/net.h
+++ b/include/net.h
@@ -314,6 +314,7 @@
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 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 */
diff --git a/net/net.c b/net/net.c
index 6e0288d..261f7c1 100644
--- a/net/net.c
+++ b/net/net.c
@@ -148,6 +148,11 @@
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 @@
#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 @@
#if (CONFIG_COMMANDS & CFG_CMD_NFS)
case NFS:
#endif
+ case NETCONS:
case TFTP:
NetServerIP = getenv_IPaddr ("serverip");
break;
@@ -404,6 +411,11 @@
CDPStart();
break;
#endif
+#ifdef CONFIG_NETCONSOLE
+ case NETCONS:
+ NcStart();
+ break;
+#endif
default:
break;
}
@@ -1259,6 +1271,9 @@
/* 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 @@
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 @@
#if (CONFIG_COMMANDS & CFG_CMD_NFS)
case NFS:
#endif
+ case NETCONS:
case TFTP:
if (NetServerIP == 0) {
puts ("*** ERROR: `serverip' not set\n");