You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
649 lines
15 KiB
649 lines
15 KiB
/* Serialport functions for debugging
|
|
*
|
|
* Copyright (c) 2000 Axis Communications AB
|
|
*
|
|
* Authors: Bjorn Wesen
|
|
*
|
|
* Exports:
|
|
* console_print_etrax(char *buf)
|
|
* int getDebugChar()
|
|
* putDebugChar(int)
|
|
* enableDebugIRQ()
|
|
* init_etrax_debug()
|
|
*
|
|
* $Log: debugport.c,v $
|
|
* Revision 1.27 2005/06/10 10:34:14 starvik
|
|
* Real console support
|
|
*
|
|
* Revision 1.26 2005/06/07 07:06:07 starvik
|
|
* Added LF->CR translation to make ETRAX customers happy.
|
|
*
|
|
* Revision 1.25 2005/03/08 08:56:47 mikaelam
|
|
* Do only set index as port->index if port is defined, otherwise use the index from the command line
|
|
*
|
|
* Revision 1.24 2005/01/19 10:26:33 mikaelam
|
|
* Return the cris serial driver in console device driver callback function
|
|
*
|
|
* Revision 1.23 2005/01/14 10:12:17 starvik
|
|
* KGDB on separate port.
|
|
* Console fixes from 2.4.
|
|
*
|
|
* Revision 1.22 2005/01/11 16:06:13 starvik
|
|
* typo
|
|
*
|
|
* Revision 1.21 2005/01/11 13:49:14 starvik
|
|
* Added raw_printk to be used where we don't trust the console.
|
|
*
|
|
* Revision 1.20 2004/12/27 11:18:32 starvik
|
|
* Merge of Linux 2.6.10 (not functional yet).
|
|
*
|
|
* Revision 1.19 2004/10/21 07:26:16 starvik
|
|
* Made it possible to specify console settings on kernel command line.
|
|
*
|
|
* Revision 1.18 2004/10/19 13:07:37 starvik
|
|
* Merge of Linux 2.6.9
|
|
*
|
|
* Revision 1.17 2004/09/29 10:33:46 starvik
|
|
* Resolved a dealock when printing debug from kernel.
|
|
*
|
|
* Revision 1.16 2004/08/24 06:12:19 starvik
|
|
* Whitespace cleanup
|
|
*
|
|
* Revision 1.15 2004/08/16 12:37:19 starvik
|
|
* Merge of Linux 2.6.8
|
|
*
|
|
* Revision 1.14 2004/05/17 13:11:29 starvik
|
|
* Disable DMA until real serial driver is up
|
|
*
|
|
* Revision 1.13 2004/05/14 07:58:01 starvik
|
|
* Merge of changes from 2.4
|
|
*
|
|
* Revision 1.12 2003/09/11 07:29:49 starvik
|
|
* Merge of Linux 2.6.0-test5
|
|
*
|
|
* Revision 1.11 2003/07/07 09:53:36 starvik
|
|
* Revert all the 2.5.74 merge changes to make the console work again
|
|
*
|
|
* Revision 1.9 2003/02/17 17:07:23 starvik
|
|
* Solved the problem with corrupted debug output (from Linux 2.4)
|
|
* * Wait until DMA, FIFO and pipe is empty before and after transmissions
|
|
* * Buffer data until a FIFO flush can be triggered.
|
|
*
|
|
* Revision 1.8 2003/01/22 06:48:36 starvik
|
|
* Fixed warnings issued by GCC 3.2.1
|
|
*
|
|
* Revision 1.7 2002/12/12 08:26:32 starvik
|
|
* Don't use C-comments inside CVS comments
|
|
*
|
|
* Revision 1.6 2002/12/11 15:42:02 starvik
|
|
* Extracted v10 (ETRAX 100LX) specific stuff from arch/cris/kernel/
|
|
*
|
|
* Revision 1.5 2002/11/20 06:58:03 starvik
|
|
* Compiles with kgdb
|
|
*
|
|
* Revision 1.4 2002/11/19 14:35:24 starvik
|
|
* Changes from linux 2.4
|
|
* Changed struct initializer syntax to the currently prefered notation
|
|
*
|
|
* Revision 1.3 2002/11/06 09:47:03 starvik
|
|
* Modified for new interrupt macros
|
|
*
|
|
* Revision 1.2 2002/01/21 15:21:50 bjornw
|
|
* Update for kdev_t changes
|
|
*
|
|
* Revision 1.6 2001/04/17 13:58:39 orjanf
|
|
* * Renamed CONFIG_KGDB to CONFIG_ETRAX_KGDB.
|
|
*
|
|
* Revision 1.5 2001/03/26 14:22:05 bjornw
|
|
* Namechange of some config options
|
|
*
|
|
* Revision 1.4 2000/10/06 12:37:26 bjornw
|
|
* Use physical addresses when talking to DMA
|
|
*
|
|
*
|
|
*/
|
|
|
|
#include <linux/console.h>
|
|
#include <linux/init.h>
|
|
#include <linux/major.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/tty.h>
|
|
#include <asm/system.h>
|
|
#include <asm/arch/svinto.h>
|
|
#include <asm/io.h> /* Get SIMCOUT. */
|
|
|
|
struct dbg_port
|
|
{
|
|
unsigned int index;
|
|
const volatile unsigned* read;
|
|
volatile char* write;
|
|
volatile unsigned* xoff;
|
|
volatile char* baud;
|
|
volatile char* tr_ctrl;
|
|
volatile char* rec_ctrl;
|
|
unsigned long irq;
|
|
unsigned int started;
|
|
unsigned long baudrate;
|
|
unsigned char parity;
|
|
unsigned int bits;
|
|
};
|
|
|
|
struct dbg_port ports[]=
|
|
{
|
|
{
|
|
0,
|
|
R_SERIAL0_READ,
|
|
R_SERIAL0_TR_DATA,
|
|
R_SERIAL0_XOFF,
|
|
R_SERIAL0_BAUD,
|
|
R_SERIAL0_TR_CTRL,
|
|
R_SERIAL0_REC_CTRL,
|
|
IO_STATE(R_IRQ_MASK1_SET, ser0_data, set),
|
|
0,
|
|
115200,
|
|
'N',
|
|
8
|
|
},
|
|
{
|
|
1,
|
|
R_SERIAL1_READ,
|
|
R_SERIAL1_TR_DATA,
|
|
R_SERIAL1_XOFF,
|
|
R_SERIAL1_BAUD,
|
|
R_SERIAL1_TR_CTRL,
|
|
R_SERIAL1_REC_CTRL,
|
|
IO_STATE(R_IRQ_MASK1_SET, ser1_data, set),
|
|
0,
|
|
115200,
|
|
'N',
|
|
8
|
|
},
|
|
{
|
|
2,
|
|
R_SERIAL2_READ,
|
|
R_SERIAL2_TR_DATA,
|
|
R_SERIAL2_XOFF,
|
|
R_SERIAL2_BAUD,
|
|
R_SERIAL2_TR_CTRL,
|
|
R_SERIAL2_REC_CTRL,
|
|
IO_STATE(R_IRQ_MASK1_SET, ser2_data, set),
|
|
0,
|
|
115200,
|
|
'N',
|
|
8
|
|
},
|
|
{
|
|
3,
|
|
R_SERIAL3_READ,
|
|
R_SERIAL3_TR_DATA,
|
|
R_SERIAL3_XOFF,
|
|
R_SERIAL3_BAUD,
|
|
R_SERIAL3_TR_CTRL,
|
|
R_SERIAL3_REC_CTRL,
|
|
IO_STATE(R_IRQ_MASK1_SET, ser3_data, set),
|
|
0,
|
|
115200,
|
|
'N',
|
|
8
|
|
}
|
|
};
|
|
|
|
extern struct tty_driver *serial_driver;
|
|
|
|
struct dbg_port* port =
|
|
#if defined(CONFIG_ETRAX_DEBUG_PORT0)
|
|
&ports[0];
|
|
#elif defined(CONFIG_ETRAX_DEBUG_PORT1)
|
|
&ports[1];
|
|
#elif defined(CONFIG_ETRAX_DEBUG_PORT2)
|
|
&ports[2];
|
|
#elif defined(CONFIG_ETRAX_DEBUG_PORT3)
|
|
&ports[3];
|
|
#else
|
|
NULL;
|
|
#endif
|
|
|
|
static struct dbg_port* kgdb_port =
|
|
#if defined(CONFIG_ETRAX_KGDB_PORT0)
|
|
&ports[0];
|
|
#elif defined(CONFIG_ETRAX_KGDB_PORT1)
|
|
&ports[1];
|
|
#elif defined(CONFIG_ETRAX_KGDB_PORT2)
|
|
&ports[2];
|
|
#elif defined(CONFIG_ETRAX_KGDB_PORT3)
|
|
&ports[3];
|
|
#else
|
|
NULL;
|
|
#endif
|
|
|
|
static void
|
|
start_port(struct dbg_port* p)
|
|
{
|
|
unsigned long rec_ctrl = 0;
|
|
unsigned long tr_ctrl = 0;
|
|
|
|
if (!p)
|
|
return;
|
|
|
|
if (p->started)
|
|
return;
|
|
p->started = 1;
|
|
|
|
if (p->index == 0)
|
|
{
|
|
genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma6);
|
|
genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma6, unused);
|
|
}
|
|
else if (p->index == 1)
|
|
{
|
|
genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma8);
|
|
genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma8, usb);
|
|
}
|
|
else if (p->index == 2)
|
|
{
|
|
genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma2);
|
|
genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma2, par0);
|
|
genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma3);
|
|
genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma3, par0);
|
|
genconfig_shadow |= IO_STATE(R_GEN_CONFIG, ser2, select);
|
|
}
|
|
else
|
|
{
|
|
genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma4);
|
|
genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma4, par1);
|
|
genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma5);
|
|
genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma5, par1);
|
|
genconfig_shadow |= IO_STATE(R_GEN_CONFIG, ser3, select);
|
|
}
|
|
|
|
*R_GEN_CONFIG = genconfig_shadow;
|
|
|
|
*p->xoff =
|
|
IO_STATE(R_SERIAL0_XOFF, tx_stop, enable) |
|
|
IO_STATE(R_SERIAL0_XOFF, auto_xoff, disable) |
|
|
IO_FIELD(R_SERIAL0_XOFF, xoff_char, 0);
|
|
|
|
switch (p->baudrate)
|
|
{
|
|
case 0:
|
|
case 115200:
|
|
*p->baud =
|
|
IO_STATE(R_SERIAL0_BAUD, tr_baud, c115k2Hz) |
|
|
IO_STATE(R_SERIAL0_BAUD, rec_baud, c115k2Hz);
|
|
break;
|
|
case 1200:
|
|
*p->baud =
|
|
IO_STATE(R_SERIAL0_BAUD, tr_baud, c1200Hz) |
|
|
IO_STATE(R_SERIAL0_BAUD, rec_baud, c1200Hz);
|
|
break;
|
|
case 2400:
|
|
*p->baud =
|
|
IO_STATE(R_SERIAL0_BAUD, tr_baud, c2400Hz) |
|
|
IO_STATE(R_SERIAL0_BAUD, rec_baud, c2400Hz);
|
|
break;
|
|
case 4800:
|
|
*p->baud =
|
|
IO_STATE(R_SERIAL0_BAUD, tr_baud, c4800Hz) |
|
|
IO_STATE(R_SERIAL0_BAUD, rec_baud, c4800Hz);
|
|
break;
|
|
case 9600:
|
|
*p->baud =
|
|
IO_STATE(R_SERIAL0_BAUD, tr_baud, c9600Hz) |
|
|
IO_STATE(R_SERIAL0_BAUD, rec_baud, c9600Hz);
|
|
break;
|
|
case 19200:
|
|
*p->baud =
|
|
IO_STATE(R_SERIAL0_BAUD, tr_baud, c19k2Hz) |
|
|
IO_STATE(R_SERIAL0_BAUD, rec_baud, c19k2Hz);
|
|
break;
|
|
case 38400:
|
|
*p->baud =
|
|
IO_STATE(R_SERIAL0_BAUD, tr_baud, c38k4Hz) |
|
|
IO_STATE(R_SERIAL0_BAUD, rec_baud, c38k4Hz);
|
|
break;
|
|
case 57600:
|
|
*p->baud =
|
|
IO_STATE(R_SERIAL0_BAUD, tr_baud, c57k6Hz) |
|
|
IO_STATE(R_SERIAL0_BAUD, rec_baud, c57k6Hz);
|
|
break;
|
|
default:
|
|
*p->baud =
|
|
IO_STATE(R_SERIAL0_BAUD, tr_baud, c115k2Hz) |
|
|
IO_STATE(R_SERIAL0_BAUD, rec_baud, c115k2Hz);
|
|
break;
|
|
}
|
|
|
|
if (p->parity == 'E') {
|
|
rec_ctrl =
|
|
IO_STATE(R_SERIAL0_REC_CTRL, rec_par, even) |
|
|
IO_STATE(R_SERIAL0_REC_CTRL, rec_par_en, enable);
|
|
tr_ctrl =
|
|
IO_STATE(R_SERIAL0_TR_CTRL, tr_par, even) |
|
|
IO_STATE(R_SERIAL0_TR_CTRL, tr_par_en, enable);
|
|
} else if (p->parity == 'O') {
|
|
rec_ctrl =
|
|
IO_STATE(R_SERIAL0_REC_CTRL, rec_par, odd) |
|
|
IO_STATE(R_SERIAL0_REC_CTRL, rec_par_en, enable);
|
|
tr_ctrl =
|
|
IO_STATE(R_SERIAL0_TR_CTRL, tr_par, odd) |
|
|
IO_STATE(R_SERIAL0_TR_CTRL, tr_par_en, enable);
|
|
} else {
|
|
rec_ctrl =
|
|
IO_STATE(R_SERIAL0_REC_CTRL, rec_par, even) |
|
|
IO_STATE(R_SERIAL0_REC_CTRL, rec_par_en, disable);
|
|
tr_ctrl =
|
|
IO_STATE(R_SERIAL0_TR_CTRL, tr_par, even) |
|
|
IO_STATE(R_SERIAL0_TR_CTRL, tr_par_en, disable);
|
|
}
|
|
if (p->bits == 7)
|
|
{
|
|
rec_ctrl |= IO_STATE(R_SERIAL0_REC_CTRL, rec_bitnr, rec_7bit);
|
|
tr_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_bitnr, tr_7bit);
|
|
}
|
|
else
|
|
{
|
|
rec_ctrl |= IO_STATE(R_SERIAL0_REC_CTRL, rec_bitnr, rec_8bit);
|
|
tr_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_bitnr, tr_8bit);
|
|
}
|
|
|
|
*p->rec_ctrl =
|
|
IO_STATE(R_SERIAL0_REC_CTRL, dma_err, stop) |
|
|
IO_STATE(R_SERIAL0_REC_CTRL, rec_enable, enable) |
|
|
IO_STATE(R_SERIAL0_REC_CTRL, rts_, active) |
|
|
IO_STATE(R_SERIAL0_REC_CTRL, sampling, middle) |
|
|
IO_STATE(R_SERIAL0_REC_CTRL, rec_stick_par, normal) |
|
|
rec_ctrl;
|
|
|
|
*p->tr_ctrl =
|
|
IO_FIELD(R_SERIAL0_TR_CTRL, txd, 0) |
|
|
IO_STATE(R_SERIAL0_TR_CTRL, tr_enable, enable) |
|
|
IO_STATE(R_SERIAL0_TR_CTRL, auto_cts, disabled) |
|
|
IO_STATE(R_SERIAL0_TR_CTRL, stop_bits, one_bit) |
|
|
IO_STATE(R_SERIAL0_TR_CTRL, tr_stick_par, normal) |
|
|
tr_ctrl;
|
|
}
|
|
|
|
static void
|
|
console_write_direct(struct console *co, const char *buf, unsigned int len)
|
|
{
|
|
int i;
|
|
unsigned long flags;
|
|
local_irq_save(flags);
|
|
|
|
if (!port)
|
|
return;
|
|
|
|
/* Send data */
|
|
for (i = 0; i < len; i++) {
|
|
/* LF -> CRLF */
|
|
if (buf[i] == '\n') {
|
|
while (!(*port->read & IO_MASK(R_SERIAL0_READ, tr_ready)))
|
|
;
|
|
*port->write = '\r';
|
|
}
|
|
/* Wait until transmitter is ready and send.*/
|
|
while (!(*port->read & IO_MASK(R_SERIAL0_READ, tr_ready)))
|
|
;
|
|
*port->write = buf[i];
|
|
}
|
|
local_irq_restore(flags);
|
|
}
|
|
|
|
int raw_printk(const char *fmt, ...)
|
|
{
|
|
static char buf[1024];
|
|
int printed_len;
|
|
static int first = 1;
|
|
if (first) {
|
|
/* Force reinitialization of the port to get manual mode. */
|
|
port->started = 0;
|
|
start_port(port);
|
|
first = 0;
|
|
}
|
|
va_list args;
|
|
va_start(args, fmt);
|
|
printed_len = vsnprintf(buf, sizeof(buf), fmt, args);
|
|
va_end(args);
|
|
console_write_direct(NULL, buf, strlen(buf));
|
|
return printed_len;
|
|
}
|
|
|
|
static void
|
|
console_write(struct console *co, const char *buf, unsigned int len)
|
|
{
|
|
if (!port)
|
|
return;
|
|
|
|
#ifdef CONFIG_SVINTO_SIM
|
|
/* no use to simulate the serial debug output */
|
|
SIMCOUT(buf, len);
|
|
return;
|
|
#endif
|
|
|
|
console_write_direct(co, buf, len);
|
|
}
|
|
|
|
/* legacy function */
|
|
|
|
void
|
|
console_print_etrax(const char *buf)
|
|
{
|
|
console_write(NULL, buf, strlen(buf));
|
|
}
|
|
|
|
/* Use polling to get a single character FROM the debug port */
|
|
|
|
int
|
|
getDebugChar(void)
|
|
{
|
|
unsigned long readval;
|
|
|
|
if (!kgdb_port)
|
|
return 0;
|
|
|
|
do {
|
|
readval = *kgdb_port->read;
|
|
} while (!(readval & IO_MASK(R_SERIAL0_READ, data_avail)));
|
|
|
|
return (readval & IO_MASK(R_SERIAL0_READ, data_in));
|
|
}
|
|
|
|
/* Use polling to put a single character to the debug port */
|
|
|
|
void
|
|
putDebugChar(int val)
|
|
{
|
|
if (!kgdb_port)
|
|
return;
|
|
|
|
while (!(*kgdb_port->read & IO_MASK(R_SERIAL0_READ, tr_ready)))
|
|
;
|
|
*kgdb_port->write = val;
|
|
}
|
|
|
|
/* Enable irq for receiving chars on the debug port, used by kgdb */
|
|
|
|
void
|
|
enableDebugIRQ(void)
|
|
{
|
|
if (!kgdb_port)
|
|
return;
|
|
|
|
*R_IRQ_MASK1_SET = kgdb_port->irq;
|
|
/* use R_VECT_MASK directly, since we really bypass Linux normal
|
|
* IRQ handling in kgdb anyway, we don't need to use enable_irq
|
|
*/
|
|
*R_VECT_MASK_SET = IO_STATE(R_VECT_MASK_SET, serial, set);
|
|
|
|
*kgdb_port->rec_ctrl = IO_STATE(R_SERIAL0_REC_CTRL, rec_enable, enable);
|
|
}
|
|
|
|
static int __init
|
|
console_setup(struct console *co, char *options)
|
|
{
|
|
char* s;
|
|
|
|
if (options) {
|
|
port = &ports[co->index];
|
|
port->baudrate = 115200;
|
|
port->parity = 'N';
|
|
port->bits = 8;
|
|
port->baudrate = simple_strtoul(options, NULL, 10);
|
|
s = options;
|
|
while(*s >= '0' && *s <= '9')
|
|
s++;
|
|
if (*s) port->parity = *s++;
|
|
if (*s) port->bits = *s++ - '0';
|
|
port->started = 0;
|
|
start_port(0);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* This is a dummy serial device that throws away anything written to it.
|
|
* This is used when no debug output is wanted.
|
|
*/
|
|
static struct tty_driver dummy_driver;
|
|
|
|
static int dummy_open(struct tty_struct *tty, struct file * filp)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static void dummy_close(struct tty_struct *tty, struct file * filp)
|
|
{
|
|
}
|
|
|
|
static int dummy_write(struct tty_struct * tty,
|
|
const unsigned char *buf, int count)
|
|
{
|
|
return count;
|
|
}
|
|
|
|
static int
|
|
dummy_write_room(struct tty_struct *tty)
|
|
{
|
|
return 8192;
|
|
}
|
|
|
|
void __init
|
|
init_dummy_console(void)
|
|
{
|
|
memset(&dummy_driver, 0, sizeof(struct tty_driver));
|
|
dummy_driver.driver_name = "serial";
|
|
dummy_driver.name = "ttyS";
|
|
dummy_driver.major = TTY_MAJOR;
|
|
dummy_driver.minor_start = 68;
|
|
dummy_driver.num = 1; /* etrax100 has 4 serial ports */
|
|
dummy_driver.type = TTY_DRIVER_TYPE_SERIAL;
|
|
dummy_driver.subtype = SERIAL_TYPE_NORMAL;
|
|
dummy_driver.init_termios = tty_std_termios;
|
|
dummy_driver.init_termios.c_cflag =
|
|
B115200 | CS8 | CREAD | HUPCL | CLOCAL; /* is normally B9600 default... */
|
|
dummy_driver.flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
|
|
|
|
dummy_driver.open = dummy_open;
|
|
dummy_driver.close = dummy_close;
|
|
dummy_driver.write = dummy_write;
|
|
dummy_driver.write_room = dummy_write_room;
|
|
if (tty_register_driver(&dummy_driver))
|
|
panic("Couldn't register dummy serial driver\n");
|
|
}
|
|
|
|
static struct tty_driver*
|
|
etrax_console_device(struct console* co, int *index)
|
|
{
|
|
if (port)
|
|
*index = port->index;
|
|
return port ? serial_driver : &dummy_driver;
|
|
}
|
|
|
|
static struct console sercons = {
|
|
name : "ttyS",
|
|
write: console_write,
|
|
read : NULL,
|
|
device : etrax_console_device,
|
|
unblank : NULL,
|
|
setup : console_setup,
|
|
flags : CON_PRINTBUFFER,
|
|
index : -1,
|
|
cflag : 0,
|
|
next : NULL
|
|
};
|
|
static struct console sercons0 = {
|
|
name : "ttyS",
|
|
write: console_write,
|
|
read : NULL,
|
|
device : etrax_console_device,
|
|
unblank : NULL,
|
|
setup : console_setup,
|
|
flags : CON_PRINTBUFFER,
|
|
index : 0,
|
|
cflag : 0,
|
|
next : NULL
|
|
};
|
|
|
|
static struct console sercons1 = {
|
|
name : "ttyS",
|
|
write: console_write,
|
|
read : NULL,
|
|
device : etrax_console_device,
|
|
unblank : NULL,
|
|
setup : console_setup,
|
|
flags : CON_PRINTBUFFER,
|
|
index : 1,
|
|
cflag : 0,
|
|
next : NULL
|
|
};
|
|
static struct console sercons2 = {
|
|
name : "ttyS",
|
|
write: console_write,
|
|
read : NULL,
|
|
device : etrax_console_device,
|
|
unblank : NULL,
|
|
setup : console_setup,
|
|
flags : CON_PRINTBUFFER,
|
|
index : 2,
|
|
cflag : 0,
|
|
next : NULL
|
|
};
|
|
static struct console sercons3 = {
|
|
name : "ttyS",
|
|
write: console_write,
|
|
read : NULL,
|
|
device : etrax_console_device,
|
|
unblank : NULL,
|
|
setup : console_setup,
|
|
flags : CON_PRINTBUFFER,
|
|
index : 3,
|
|
cflag : 0,
|
|
next : NULL
|
|
};
|
|
/*
|
|
* Register console (for printk's etc)
|
|
*/
|
|
|
|
int __init
|
|
init_etrax_debug(void)
|
|
{
|
|
static int first = 1;
|
|
|
|
if (!first) {
|
|
unregister_console(&sercons);
|
|
register_console(&sercons0);
|
|
register_console(&sercons1);
|
|
register_console(&sercons2);
|
|
register_console(&sercons3);
|
|
init_dummy_console();
|
|
return 0;
|
|
}
|
|
|
|
first = 0;
|
|
register_console(&sercons);
|
|
start_port(port);
|
|
#ifdef CONFIG_ETRAX_KGDB
|
|
start_port(kgdb_port);
|
|
#endif
|
|
return 0;
|
|
}
|
|
__initcall(init_etrax_debug);
|
|
|