/*-------------------------------------------------------------------------+
| console.c - ARM BSP
+--------------------------------------------------------------------------+
| This file contains the ARM console I/O package.
+--------------------------------------------------------------------------+
| COPYRIGHT (c) 2000 Canon Research France SA.
| Emmanuel Raguet, mailto:raguet@crf.canon.fr
|
| The license and distribution terms for this file may be
| found in found in the file LICENSE in this distribution or at
| http://www.rtems.com/license/LICENSE.
|
| $Id$
+--------------------------------------------------------------------------*/
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <unistd.h>
#undef __assert
void __assert (const char *file, int line, const char *msg);
#include <bsp.h>
#include <rtems/bspIo.h>
#include <irq.h>
#include <rtems/libio.h>
#include <termios.h>
#include <registers.h>
#include <uart.h>
/*
* Possible value for console input/output :
* BSP_CONSOLE_PORT_CONSOLE
* BSP_UART_COM1
* BSP_UART_COM2
*
* Note:
* 1. Currently BSPPrintkPort, cannot be assigned to COM2,
* it will be fixed soon.
*
* 2. If both BSPConsolePort and BSPPrintkport are assigned
* to same serial device it does not work that great
*/
int BSPConsolePort = BSP_UART_COM1;
int BSPPrintkPort = BSP_UART_COM1;
int BSPBaseBaud = 115200;
/*-------------------------------------------------------------------------+
| External Prototypes
+--------------------------------------------------------------------------*/
extern char BSP_wait_polled_input(void);
extern BSP_polling_getchar_function_type BSP_poll_char;
extern void rtemsReboot(void);
static int conSetAttr(int minor, const struct termios *);
static void isr_on(const rtems_irq_connect_data *);
static void isr_off(const rtems_irq_connect_data *);
static int isr_is_on(const rtems_irq_connect_data *);
/*
* BSP initialization
*/
/* for printk support */
BSP_output_char_function_type BSP_output_char =
(BSP_output_char_function_type) BSP_output_char_via_serial;
BSP_polling_getchar_function_type BSP_poll_char =
(BSP_polling_getchar_function_type) BSP_poll_char_via_serial;
static rtems_irq_connect_data console_isr_data = {BSP_UART,
BSP_uart_termios_isr_com1,
isr_on,
isr_off,
isr_is_on};
static void
isr_on(const rtems_irq_connect_data *unused)
{
return;
}
static void
isr_off(const rtems_irq_connect_data *unused)
{
return;
}
static int
isr_is_on(const rtems_irq_connect_data *irq)
{
if (Regs[INTMASK] & 0x4)
return 0;
else
return 1;
}
void __assert (const char *file, int line, const char *msg)
{
static char exit_msg[] = "EXECUTIVE SHUTDOWN! Any key to reboot...";
unsigned char ch;
/*
* Note we cannot call exit or printf from here,
* assert can fail inside ISR too
*/
/*
* Close console
*/
close(2);
close(1);
close(0);
printk("\nassert failed: %s: ", file);
printk("%d: ", line);
printk("%s\n\n", msg);
printk(exit_msg);
ch = BSP_poll_char();
printk("\n\n");
rtemsReboot();
}
/*-------------------------------------------------------------------------+
| Console device driver INITIALIZE entry point.
+--------------------------------------------------------------------------+
| Initilizes the I/O console (keyboard + VGA display) driver.
+--------------------------------------------------------------------------*/
rtems_device_driver
console_initialize(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
rtems_status_code status;
/*
* Set up TERMIOS
*/
rtems_termios_initialize ();
/*
* Do device-specific initialization
*/
/* 38400-8-N-1 */
BSP_uart_init(BSPConsolePort, 38400, 0);
/* Set interrupt handler */
console_isr_data.name = BSP_UART;
console_isr_data.hdl = BSP_uart_termios_isr_com1;
console_isr_data.irqLevel = 3;
console_isr_data.irqTrigger = 0;
status = BSP_install_rtems_irq_handler(&console_isr_data);
if (!status){
printk("Error installing serial console interrupt handler!\n");
rtems_fatal_error_occurred(status);
}
/*
* Register the device
*/
status = rtems_io_register_name ("/dev/console", major, 0);
if (status != RTEMS_SUCCESSFUL)
{
printk("Error registering console device!\n");
rtems_fatal_error_occurred (status);
}
printk("Initialized console on port COM1 38400-8-N-1\n\n");
return RTEMS_SUCCESSFUL;
} /* console_initialize */
static int console_last_close(int major, int minor, void *arg)
{
BSP_remove_rtems_irq_handler (&console_isr_data);
return 0;
}
/*-------------------------------------------------------------------------+
| Console device driver OPEN entry point
+--------------------------------------------------------------------------*/
rtems_device_driver
console_open(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
rtems_status_code status;
static rtems_termios_callbacks cb =
{
NULL, /* firstOpen */
console_last_close, /* lastClose */
NULL, /* pollRead */
BSP_uart_termios_write_com1, /* write */
conSetAttr, /* setAttributes */
NULL, /* stopRemoteTx */
NULL, /* startRemoteTx */
1 /* outputUsesInterrupts */
};
status = rtems_termios_open (major, minor, arg, &cb);
if(status != RTEMS_SUCCESSFUL)
{
printk("Error openning console device\n");
return status;
}
/*
* Pass data area info down to driver
*/
BSP_uart_termios_set(BSPConsolePort,
((rtems_libio_open_close_args_t *)arg)->iop->data1);
/* Enable interrupts on channel */
BSP_uart_intr_ctrl(BSPConsolePort, BSP_UART_INTR_CTRL_TERMIOS);
return RTEMS_SUCCESSFUL;
}
/*-------------------------------------------------------------------------+
| Console device driver CLOSE entry point
+--------------------------------------------------------------------------*/
rtems_device_driver
console_close(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
rtems_device_driver res = RTEMS_SUCCESSFUL;
res = rtems_termios_close (arg);
return res;
} /* console_close */
/*-------------------------------------------------------------------------+
| Console device driver READ entry point.
+--------------------------------------------------------------------------+
| Read characters from the I/O console. We only have stdin.
+--------------------------------------------------------------------------*/
rtems_device_driver
console_read(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
return rtems_termios_read (arg);
} /* console_read */
/*-------------------------------------------------------------------------+
| Console device driver WRITE entry point.
+--------------------------------------------------------------------------+
| Write characters to the I/O console. Stderr and stdout are the same.
+--------------------------------------------------------------------------*/
rtems_device_driver
console_write(rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg)
{
return rtems_termios_write (arg);
} /* console_write */
/*
* Handle ioctl request.
*/
rtems_device_driver
console_control(rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg
)
{
return rtems_termios_ioctl (arg);
}
static int
conSetAttr(int minor, const struct termios *t)
{
int baud;
switch (t->c_cflag & CBAUD)
{
case B50:
baud = 50;
break;
case B75:
baud = 75;
break;
case B110:
baud = 110;
break;
case B134:
baud = 134;
break;
case B150:
baud = 150;
break;
case B200:
baud = 200;
break;
case B300:
baud = 300;
break;
case B600:
baud = 600;
break;
case B1200:
baud = 1200;
break;
case B1800:
baud = 1800;
break;
case B2400:
baud = 2400;
break;
case B4800:
baud = 4800;
break;
case B9600:
baud = 9600;
break;
case B19200:
baud = 19200;
break;
case B38400:
baud = 38400;
break;
case B57600:
baud = 57600;
break;
case B115200:
baud = 115200;
break;
default:
baud = 0;
rtems_fatal_error_occurred (RTEMS_INTERNAL_ERROR);
return 0;
}
BSP_uart_set_baud(BSPConsolePort, baud);
return 0;
}
