mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 11:00:15 +00:00
0b1284eb52
It is a pain to have to specify the value 10 in each call. Add a new dectoul() function and update the code to use it. Signed-off-by: Simon Glass <sjg@chromium.org>
345 lines
7.5 KiB
C
345 lines
7.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2004
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <env.h>
|
|
#include <log.h>
|
|
#include <stdio_dev.h>
|
|
#include <net.h>
|
|
|
|
#ifndef CONFIG_NETCONSOLE_BUFFER_SIZE
|
|
#define CONFIG_NETCONSOLE_BUFFER_SIZE 512
|
|
#endif
|
|
|
|
static char input_buffer[CONFIG_NETCONSOLE_BUFFER_SIZE];
|
|
static int input_size; /* char count in input buffer */
|
|
static int input_offset; /* offset to valid chars in input buffer */
|
|
static int input_recursion;
|
|
static int output_recursion;
|
|
static int net_timeout;
|
|
static uchar nc_ether[6]; /* server enet address */
|
|
static struct in_addr nc_ip; /* server ip */
|
|
static short nc_out_port; /* target output port */
|
|
static short nc_in_port; /* source input port */
|
|
static const char *output_packet; /* used by first send udp */
|
|
static int output_packet_len;
|
|
/*
|
|
* Start with a default last protocol.
|
|
* We are only interested in NETCONS or not.
|
|
*/
|
|
enum proto_t net_loop_last_protocol = BOOTP;
|
|
|
|
static void nc_wait_arp_handler(uchar *pkt, unsigned dest,
|
|
struct in_addr sip, unsigned src,
|
|
unsigned len)
|
|
{
|
|
net_set_state(NETLOOP_SUCCESS); /* got arp reply - quit net loop */
|
|
}
|
|
|
|
static void nc_handler(uchar *pkt, unsigned dest, struct in_addr sip,
|
|
unsigned src, unsigned len)
|
|
{
|
|
if (input_size)
|
|
net_set_state(NETLOOP_SUCCESS); /* got input - quit net loop */
|
|
}
|
|
|
|
static void nc_timeout_handler(void)
|
|
{
|
|
net_set_state(NETLOOP_SUCCESS);
|
|
}
|
|
|
|
static int is_broadcast(struct in_addr ip)
|
|
{
|
|
static struct in_addr netmask;
|
|
static struct in_addr our_ip;
|
|
static int env_changed_id;
|
|
int env_id = env_get_id();
|
|
|
|
/* update only when the environment has changed */
|
|
if (env_changed_id != env_id) {
|
|
netmask = env_get_ip("netmask");
|
|
our_ip = env_get_ip("ipaddr");
|
|
|
|
env_changed_id = env_id;
|
|
}
|
|
|
|
return (ip.s_addr == ~0 || /* 255.255.255.255 (global bcast) */
|
|
((netmask.s_addr & our_ip.s_addr) ==
|
|
(netmask.s_addr & ip.s_addr) && /* on the same net and */
|
|
(netmask.s_addr | ip.s_addr) == ~0)); /* bcast to our net */
|
|
}
|
|
|
|
static int refresh_settings_from_env(void)
|
|
{
|
|
const char *p;
|
|
static int env_changed_id;
|
|
int env_id = env_get_id();
|
|
|
|
/* update only when the environment has changed */
|
|
if (env_changed_id != env_id) {
|
|
if (env_get("ncip")) {
|
|
nc_ip = env_get_ip("ncip");
|
|
if (!nc_ip.s_addr)
|
|
return -1; /* ncip is 0.0.0.0 */
|
|
p = strchr(env_get("ncip"), ':');
|
|
if (p != NULL) {
|
|
nc_out_port = dectoul(p + 1, NULL);
|
|
nc_in_port = nc_out_port;
|
|
}
|
|
} else {
|
|
nc_ip.s_addr = ~0; /* ncip is not set, so broadcast */
|
|
}
|
|
|
|
p = env_get("ncoutport");
|
|
if (p != NULL)
|
|
nc_out_port = dectoul(p, NULL);
|
|
p = env_get("ncinport");
|
|
if (p != NULL)
|
|
nc_in_port = dectoul(p, NULL);
|
|
|
|
if (is_broadcast(nc_ip))
|
|
/* broadcast MAC address */
|
|
memset(nc_ether, 0xff, sizeof(nc_ether));
|
|
else
|
|
/* force arp request */
|
|
memset(nc_ether, 0, sizeof(nc_ether));
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Called from net_loop in net/net.c before each packet
|
|
*/
|
|
void nc_start(void)
|
|
{
|
|
refresh_settings_from_env();
|
|
if (!output_packet_len || memcmp(nc_ether, net_null_ethaddr, 6)) {
|
|
/* going to check for input packet */
|
|
net_set_udp_handler(nc_handler);
|
|
net_set_timeout_handler(net_timeout, nc_timeout_handler);
|
|
} else {
|
|
/* send arp request */
|
|
uchar *pkt;
|
|
net_set_arp_handler(nc_wait_arp_handler);
|
|
pkt = (uchar *)net_tx_packet + net_eth_hdr_size() +
|
|
IP_UDP_HDR_SIZE;
|
|
memcpy(pkt, output_packet, output_packet_len);
|
|
net_send_udp_packet(nc_ether, nc_ip, nc_out_port, nc_in_port,
|
|
output_packet_len);
|
|
}
|
|
}
|
|
|
|
int nc_input_packet(uchar *pkt, struct in_addr src_ip, unsigned dest_port,
|
|
unsigned src_port, unsigned len)
|
|
{
|
|
int end, chunk;
|
|
|
|
if (dest_port != nc_in_port || !len)
|
|
return 0; /* not for us */
|
|
|
|
if (src_ip.s_addr != nc_ip.s_addr && !is_broadcast(nc_ip))
|
|
return 0; /* not from our client */
|
|
|
|
debug_cond(DEBUG_DEV_PKT, "input: \"%*.*s\"\n", len, len, pkt);
|
|
|
|
if (input_size == sizeof(input_buffer))
|
|
return 1; /* no space */
|
|
if (len > sizeof(input_buffer) - input_size)
|
|
len = sizeof(input_buffer) - input_size;
|
|
|
|
end = input_offset + input_size;
|
|
if (end >= sizeof(input_buffer))
|
|
end -= sizeof(input_buffer);
|
|
|
|
chunk = len;
|
|
/* Check if packet will wrap in input_buffer */
|
|
if (end + len >= sizeof(input_buffer)) {
|
|
chunk = sizeof(input_buffer) - end;
|
|
/* Copy the second part of the pkt to start of input_buffer */
|
|
memcpy(input_buffer, pkt + chunk, len - chunk);
|
|
}
|
|
/* Copy first (or only) part of pkt after end of current valid input*/
|
|
memcpy(input_buffer + end, pkt, chunk);
|
|
|
|
input_size += len;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void nc_send_packet(const char *buf, int len)
|
|
{
|
|
#ifdef CONFIG_DM_ETH
|
|
struct udevice *eth;
|
|
#else
|
|
struct eth_device *eth;
|
|
#endif
|
|
int inited = 0;
|
|
uchar *pkt;
|
|
uchar *ether;
|
|
struct in_addr ip;
|
|
|
|
debug_cond(DEBUG_DEV_PKT, "output: \"%*.*s\"\n", len, len, buf);
|
|
|
|
eth = eth_get_dev();
|
|
if (eth == NULL)
|
|
return;
|
|
|
|
if (!memcmp(nc_ether, net_null_ethaddr, 6)) {
|
|
if (eth_is_active(eth))
|
|
return; /* inside net loop */
|
|
output_packet = buf;
|
|
output_packet_len = len;
|
|
input_recursion = 1;
|
|
net_loop(NETCONS); /* wait for arp reply and send packet */
|
|
input_recursion = 0;
|
|
output_packet_len = 0;
|
|
return;
|
|
}
|
|
|
|
if (!eth_is_active(eth)) {
|
|
if (eth_is_on_demand_init()) {
|
|
if (eth_init() < 0)
|
|
return;
|
|
eth_set_last_protocol(NETCONS);
|
|
} else {
|
|
eth_init_state_only();
|
|
}
|
|
|
|
inited = 1;
|
|
}
|
|
pkt = (uchar *)net_tx_packet + net_eth_hdr_size() + IP_UDP_HDR_SIZE;
|
|
memcpy(pkt, buf, len);
|
|
ether = nc_ether;
|
|
ip = nc_ip;
|
|
net_send_udp_packet(ether, ip, nc_out_port, nc_in_port, len);
|
|
|
|
if (inited) {
|
|
if (eth_is_on_demand_init())
|
|
eth_halt();
|
|
else
|
|
eth_halt_state_only();
|
|
}
|
|
}
|
|
|
|
static int nc_stdio_start(struct stdio_dev *dev)
|
|
{
|
|
int retval;
|
|
|
|
nc_out_port = 6666; /* default port */
|
|
nc_in_port = nc_out_port;
|
|
|
|
retval = refresh_settings_from_env();
|
|
if (retval != 0)
|
|
return retval;
|
|
|
|
/*
|
|
* Initialize the static IP settings and buffer pointers
|
|
* incase we call net_send_udp_packet before net_loop
|
|
*/
|
|
net_init();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void nc_stdio_putc(struct stdio_dev *dev, char c)
|
|
{
|
|
if (output_recursion)
|
|
return;
|
|
output_recursion = 1;
|
|
|
|
nc_send_packet(&c, 1);
|
|
|
|
output_recursion = 0;
|
|
}
|
|
|
|
static void nc_stdio_puts(struct stdio_dev *dev, const char *s)
|
|
{
|
|
int len;
|
|
|
|
if (output_recursion)
|
|
return;
|
|
output_recursion = 1;
|
|
|
|
len = strlen(s);
|
|
while (len) {
|
|
int send_len = min(len, (int)sizeof(input_buffer));
|
|
nc_send_packet(s, send_len);
|
|
len -= send_len;
|
|
s += send_len;
|
|
}
|
|
|
|
output_recursion = 0;
|
|
}
|
|
|
|
static int nc_stdio_getc(struct stdio_dev *dev)
|
|
{
|
|
uchar c;
|
|
|
|
input_recursion = 1;
|
|
|
|
net_timeout = 0; /* no timeout */
|
|
while (!input_size)
|
|
net_loop(NETCONS);
|
|
|
|
input_recursion = 0;
|
|
|
|
c = input_buffer[input_offset++];
|
|
|
|
if (input_offset >= sizeof(input_buffer))
|
|
input_offset -= sizeof(input_buffer);
|
|
input_size--;
|
|
|
|
return c;
|
|
}
|
|
|
|
static int nc_stdio_tstc(struct stdio_dev *dev)
|
|
{
|
|
#ifdef CONFIG_DM_ETH
|
|
struct udevice *eth;
|
|
#else
|
|
struct eth_device *eth;
|
|
#endif
|
|
|
|
if (input_recursion)
|
|
return 0;
|
|
|
|
if (input_size)
|
|
return 1;
|
|
|
|
eth = eth_get_dev();
|
|
if (eth_is_active(eth))
|
|
return 0; /* inside net loop */
|
|
|
|
input_recursion = 1;
|
|
|
|
net_timeout = 1;
|
|
net_loop(NETCONS); /* kind of poll */
|
|
|
|
input_recursion = 0;
|
|
|
|
return input_size != 0;
|
|
}
|
|
|
|
int drv_nc_init(void)
|
|
{
|
|
struct stdio_dev dev;
|
|
int rc;
|
|
|
|
memset(&dev, 0, sizeof(dev));
|
|
|
|
strcpy(dev.name, "nc");
|
|
dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT;
|
|
dev.start = nc_stdio_start;
|
|
dev.putc = nc_stdio_putc;
|
|
dev.puts = nc_stdio_puts;
|
|
dev.getc = nc_stdio_getc;
|
|
dev.tstc = nc_stdio_tstc;
|
|
|
|
rc = stdio_register(&dev);
|
|
|
|
return (rc == 0) ? 1 : rc;
|
|
}
|