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/* This file contains the TTY driver for the serial ports. The driver
* is layered so that different UART hardware can be used. It is implemented
* using the Driver Manager.
*
* This driver uses the termios pseudo driver.
*
* COPYRIGHT (c) 2010.
* Cobham Gaisler AB.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#include <bsp.h>
#include <stdlib.h>
#include <bsp/cons.h>
#include <rtems/console.h>
#ifdef RTEMS_DRVMGR_STARTUP
/* Note that it is not possible to use the interrupt mode of the driver
* together with the "old" APBUART and -u to GRMON. However the new
* APBUART core (from 1.0.17-b2710) has the GRMON debug bit and can
* handle interrupts.
*/
static int console_initialized = 0;
#define FLAG_SYSCON 0x01
struct console_priv {
int flags; /* 0x1=SystemConsole */
int minor;
struct console_dev *dev;
};
#define CONSOLE_MAX BSP_NUMBER_OF_TERMIOS_PORTS
struct console_priv cons[CONSOLE_MAX] = {{0,0},};
/* Install Console in TERMIOS layer */
static void console_dev_init(struct console_priv *con)
{
char name[16], *fsname;
rtems_status_code status;
int minor;
minor = con->minor;
if (!con->dev->fsname) {
strcpy(name, "/dev/console_a");
/* Special console name and MINOR for SYSTEM CONSOLE */
if (minor == 0)
name[12] = '\0'; /* /dev/console */
name[13] += minor; /* when minor=0, this has no effect... */
fsname = name;
} else {
fsname = con->dev->fsname;
}
status = rtems_termios_device_install(
fsname,
con->dev->handler,
NULL,
&con->dev->base
);
if (status != RTEMS_SUCCESSFUL) {
rtems_fatal_error_occurred(status);
}
}
/* Called by device driver to register itself to the cons interface. */
void console_dev_register(struct console_dev *dev)
{
int i, minor = 0;
struct console_priv *con = NULL;
if ((dev->flags & CONSOLE_FLAG_SYSCON) && !cons[0].dev) {
con = &cons[0];
con->flags = FLAG_SYSCON;
} else {
for (i=1; i<CONSOLE_MAX; i++) {
if (!cons[i].dev) {
con = &cons[i];
con->flags = 0;
minor = i;
break;
}
}
}
if (con == NULL) {
/* Not enough console structures */
return;
}
/* Assign Console */
con->dev = dev;
con->minor = minor;
if (console_initialized) {
/* Console layer is already initialized, that means that we can
* register termios interface directly.
*/
console_dev_init(con);
}
}
#if 0
void console_dev_unregister(struct console_dev *dev)
{
}
#endif
rtems_device_driver console_initialize(
rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
int i;
rtems_termios_initialize();
/* Register all Console a file system device node */
for (i=0; i<CONSOLE_MAX; i++) {
if (cons[i].dev)
console_dev_init(&cons[i]);
}
console_initialized = 1;
return RTEMS_SUCCESSFUL;
}
#endif
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