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/**
* @file
*
* This file contains the libchip configuration information
* to instantiate the libchip driver for the VGA console
* and serial ports on a PC.
*/
/*
* COPYRIGHT (c) 1989-2014, 2016.
* On-Line Applications Research Corporation (OAR).
*
* 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 <bsp/bspimpl.h>
#include <libchip/serial.h>
#include <libchip/ns16550.h>
#if BSP_ENABLE_VGA
#include "vgacons.h"
#endif
#include <bsp/irq.h>
#include "../../../shared/console_private.h"
#if BSP_ENABLE_VGA
#define VGA_CONSOLE_FUNCTIONS &vgacons_fns
#endif
#if BSP_ENABLE_COM1_COM4
#if 0
#define COM_CONSOLE_FUNCTIONS &ns16550_fns_polled
#else
#define COM_CONSOLE_FUNCTIONS &ns16550_fns
#endif
/*
* Base IO for UART
*/
#define COM1_BASE_IO 0x3F8
#define COM2_BASE_IO 0x3E8
#define COM3_BASE_IO 0x2F8
#define COM4_BASE_IO 0x2E8
#define CLOCK_RATE (115200 * 16)
static uint8_t com_get_register(uint32_t addr, uint8_t i)
{
register uint8_t val;
inport_byte( (addr + i), val );
return val;
}
static void com_set_register(uint32_t addr, uint8_t i, uint8_t val)
{
outport_byte( (addr + i), val );
}
#endif
/*
* Default to the PC VGA console if present and configured.
*/
console_tbl Console_Configuration_Ports[] = {
#if BSP_ENABLE_VGA
/*
* If present the VGA console must always be minor 0.
* See console_control.
*/
{
"/dev/vgacons", /* sDeviceName */
VGA_CONSOLE, /* deviceType */
VGA_CONSOLE_FUNCTIONS, /* pDeviceFns */
vgacons_probe, /* deviceProbe */
NULL, /* pDeviceFlow */
16, /* ulMargin */
8, /* ulHysteresis */
(void *) NULL, /* NULL */ /* pDeviceParams */
0x00000000, /* ulCtrlPort1 */
0x00000000, /* ulCtrlPort2 */
0x00000000, /* ulDataPort */
NULL, /* getRegister */
NULL, /* setRegister */
NULL,/* unused */ /* getData */
NULL,/* unused */ /* setData */
0x0, /* ulClock */
0x0 /* ulIntVector -- base for port */
},
#endif
};
unsigned long Console_Configuration_Count =
(sizeof(Console_Configuration_Ports)/sizeof(console_tbl));
static console_tbl Legacy_Ports[] = {
#if BSP_ENABLE_COM1_COM4
{
"/dev/com1", /* sDeviceName */
SERIAL_NS16550, /* deviceType */
COM_CONSOLE_FUNCTIONS, /* pDeviceFns */
NULL, /* deviceProbe */
NULL, /* pDeviceFlow */
16, /* ulMargin */
8, /* ulHysteresis */
(void *) 9600, /* Baud Rate */ /* pDeviceParams */
COM1_BASE_IO, /* ulCtrlPort1 */
0x00000000, /* ulCtrlPort2 */
COM1_BASE_IO, /* ulDataPort */
com_get_register, /* getRegister */
com_set_register, /* setRegister */
NULL,/* unused */ /* getData */
NULL,/* unused */ /* setData */
CLOCK_RATE, /* ulClock */
BSP_UART_COM1_IRQ /* ulIntVector -- base for port */
},
{
"/dev/com2", /* sDeviceName */
SERIAL_NS16550, /* deviceType */
COM_CONSOLE_FUNCTIONS, /* pDeviceFns */
NULL, /* deviceProbe */
NULL, /* pDeviceFlow */
16, /* ulMargin */
8, /* ulHysteresis */
(void *) 9600, /* Baud Rate */ /* pDeviceParams */
COM2_BASE_IO, /* ulCtrlPort1 */
0x00000000, /* ulCtrlPort2 */
COM2_BASE_IO, /* ulDataPort */
com_get_register, /* getRegister */
com_set_register, /* setRegister */
NULL,/* unused */ /* getData */
NULL,/* unused */ /* setData */
CLOCK_RATE, /* ulClock */
BSP_UART_COM2_IRQ /* ulIntVector -- base for port */
},
{
"/dev/com3", /* sDeviceName */
SERIAL_NS16550, /* deviceType */
COM_CONSOLE_FUNCTIONS, /* pDeviceFns */
NULL, /* deviceProbe */
NULL, /* pDeviceFlow */
16, /* ulMargin */
8, /* ulHysteresis */
(void *) 9600, /* Baud Rate */ /* pDeviceParams */
COM3_BASE_IO, /* ulCtrlPort1 */
0x00000000, /* ulCtrlPort2 */
COM3_BASE_IO, /* ulDataPort */
com_get_register, /* getRegister */
com_set_register, /* setRegister */
NULL,/* unused */ /* getData */
NULL,/* unused */ /* setData */
CLOCK_RATE, /* ulClock */
BSP_UART_COM3_IRQ /* ulIntVector -- base for port */
},
{
"/dev/com4", /* sDeviceName */
SERIAL_NS16550, /* deviceType */
COM_CONSOLE_FUNCTIONS, /* pDeviceFns */
NULL, /* deviceProbe */
NULL, /* pDeviceFlow */
16, /* ulMargin */
8, /* ulHysteresis */
(void *) 9600, /* Baud Rate */ /* pDeviceParams */
COM4_BASE_IO, /* ulCtrlPort1 */
0x00000000, /* ulCtrlPort2 */
COM4_BASE_IO, /* ulDataPort */
com_get_register, /* getRegister */
com_set_register, /* setRegister */
NULL,/* unused */ /* getData */
NULL,/* unused */ /* setData */
CLOCK_RATE, /* ulClock */
BSP_UART_COM4_IRQ /* ulIntVector -- base for port */
},
#endif
};
#define Legacy_Port_Count \
(sizeof(Legacy_Ports)/sizeof(console_tbl))
void legacy_uart_probe(void)
{
#if BSP_ENABLE_COM1_COM4
const char *opt;
/*
* Check the command line to see if com1-com4 are disabled.
*/
opt = bsp_cmdline_arg("--disable-com1-com4");
if ( opt ) {
printk( "COM1-COM4: disabled\n" );
} else {
if (Legacy_Port_Count) {
printk("Legacy UART Ports: COM1-COM4\n");
console_register_devices( Legacy_Ports, Legacy_Port_Count );
}
}
#endif
}
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