u-boot/common/serial.c
Poonam Aggrwal 039594a430 8xxx: Second UART port added for MPC85xx, MPC83xx, MPC86xx processors
Defining the next two configs allows to switch the serial port from the
console using the setenv stdin and stdout
  1. #define CONFIG_SERIAL_MULTI 1 /* Enable both serial ports */
  2. #define CONFIG_SYS_CONSOLE_IS_IN_ENV /* determine from environment */

Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
Signed-off-by: Ed Swarthout <Ed.Swarthout@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-07-02 08:34:13 -05:00

258 lines
6.2 KiB
C

/*
* (C) Copyright 2004
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <serial.h>
#include <devices.h>
DECLARE_GLOBAL_DATA_PTR;
static struct serial_device *serial_devices = NULL;
static struct serial_device *serial_current = NULL;
#if !defined(CONFIG_LWMON) && !defined(CONFIG_PXA27X)
struct serial_device *__default_serial_console (void)
{
#if defined(CONFIG_8xx_CONS_SMC1) || defined(CONFIG_8xx_CONS_SMC2)
return &serial_smc_device;
#elif defined(CONFIG_8xx_CONS_SCC1) || defined(CONFIG_8xx_CONS_SCC2) \
|| defined(CONFIG_8xx_CONS_SCC3) || defined(CONFIG_8xx_CONS_SCC4)
return &serial_scc_device;
#elif defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_440) \
|| defined(CONFIG_405EP) || defined(CONFIG_405EZ) || defined(CONFIG_405EX) \
|| defined(CONFIG_MPC5xxx) || defined(CONFIG_MPC83xx) \
|| defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
#if defined(CONFIG_CONS_INDEX) && defined(CONFIG_SYS_NS16550_SERIAL)
#if (CONFIG_CONS_INDEX==1)
return &eserial1_device;
#elif (CONFIG_CONS_INDEX==2)
return &eserial2_device;
#elif (CONFIG_CONS_INDEX==3)
return &eserial3_device;
#elif (CONFIG_CONS_INDEX==4)
return &eserial4_device;
#else
#error "Bad CONFIG_CONS_INDEX."
#endif
#elif defined(CONFIG_UART1_CONSOLE)
return &serial1_device;
#else
return &serial0_device;
#endif
#elif defined(CONFIG_S3C2410)
#if defined(CONFIG_SERIAL1)
return &s3c24xx_serial0_device;
#elif defined(CONFIG_SERIAL2)
return &s3c24xx_serial1_device;
#elif defined(CONFIG_SERIAL3)
return &s3c24xx_serial2_device;
#else
#error "CONFIG_SERIAL? missing."
#endif
#elif defined(CONFIG_OMAP3_ZOOM2)
return ZOOM2_DEFAULT_SERIAL_DEVICE;
#else
#error No default console
#endif
}
struct serial_device *default_serial_console(void) __attribute__((weak, alias("__default_serial_console")));
#endif
int serial_register (struct serial_device *dev)
{
dev->init += gd->reloc_off;
dev->setbrg += gd->reloc_off;
dev->getc += gd->reloc_off;
dev->tstc += gd->reloc_off;
dev->putc += gd->reloc_off;
dev->puts += gd->reloc_off;
dev->next = serial_devices;
serial_devices = dev;
return 0;
}
void serial_initialize (void)
{
#if defined(CONFIG_8xx_CONS_SMC1) || defined(CONFIG_8xx_CONS_SMC2)
serial_register (&serial_smc_device);
#endif
#if defined(CONFIG_8xx_CONS_SCC1) || defined(CONFIG_8xx_CONS_SCC2) \
|| defined(CONFIG_8xx_CONS_SCC3) || defined(CONFIG_8xx_CONS_SCC4)
serial_register (&serial_scc_device);
#endif
#if defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_440) \
|| defined(CONFIG_405EP) || defined(CONFIG_405EZ) || defined(CONFIG_405EX) \
|| defined(CONFIG_MPC5xxx)
serial_register(&serial0_device);
serial_register(&serial1_device);
#endif
#if defined(CONFIG_SYS_NS16550_SERIAL)
#if defined(CONFIG_SYS_NS16550_COM1)
serial_register(&eserial1_device);
#endif
#if defined(CONFIG_SYS_NS16550_COM2)
serial_register(&eserial2_device);
#endif
#if defined(CONFIG_SYS_NS16550_COM3)
serial_register(&eserial3_device);
#endif
#if defined(CONFIG_SYS_NS16550_COM4)
serial_register(&eserial4_device);
#endif
#endif /* CONFIG_SYS_NS16550_SERIAL */
#if defined (CONFIG_FFUART)
serial_register(&serial_ffuart_device);
#endif
#if defined (CONFIG_BTUART)
serial_register(&serial_btuart_device);
#endif
#if defined (CONFIG_STUART)
serial_register(&serial_stuart_device);
#endif
#if defined(CONFIG_S3C2410)
serial_register(&s3c24xx_serial0_device);
serial_register(&s3c24xx_serial1_device);
serial_register(&s3c24xx_serial2_device);
#endif
serial_assign (default_serial_console ()->name);
}
void serial_devices_init (void)
{
device_t dev;
struct serial_device *s = serial_devices;
while (s) {
memset (&dev, 0, sizeof (dev));
strcpy (dev.name, s->name);
dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT;
dev.start = s->init;
dev.putc = s->putc;
dev.puts = s->puts;
dev.getc = s->getc;
dev.tstc = s->tstc;
device_register (&dev);
s = s->next;
}
}
int serial_assign (char *name)
{
struct serial_device *s;
for (s = serial_devices; s; s = s->next) {
if (strcmp (s->name, name) == 0) {
serial_current = s;
return 0;
}
}
return 1;
}
void serial_reinit_all (void)
{
struct serial_device *s;
for (s = serial_devices; s; s = s->next) {
s->init ();
}
}
int serial_init (void)
{
if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
struct serial_device *dev = default_serial_console ();
return dev->init ();
}
return serial_current->init ();
}
void serial_setbrg (void)
{
if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
struct serial_device *dev = default_serial_console ();
dev->setbrg ();
return;
}
serial_current->setbrg ();
}
int serial_getc (void)
{
if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
struct serial_device *dev = default_serial_console ();
return dev->getc ();
}
return serial_current->getc ();
}
int serial_tstc (void)
{
if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
struct serial_device *dev = default_serial_console ();
return dev->tstc ();
}
return serial_current->tstc ();
}
void serial_putc (const char c)
{
if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
struct serial_device *dev = default_serial_console ();
dev->putc (c);
return;
}
serial_current->putc (c);
}
void serial_puts (const char *s)
{
if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
struct serial_device *dev = default_serial_console ();
dev->puts (s);
return;
}
serial_current->puts (s);
}