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![Wolfgang Denk](/assets/img/avatar_default.png)
Patch by Martin Krause, 8 Jun 2006 This patch supports two serial consoles on boards with a MPC5xxx CPU. The console can be switched at runtime by setting stdin, stdout and stderr to the desired serial interface (serial0 or serial1). The PSCs to be used as console port are definded by CONFIG_PSC_CONSOLE and CONFIG_PSC_CONSOLE2. See README.serial_multi for details.
202 lines
4.4 KiB
C
202 lines
4.4 KiB
C
/*
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* (C) Copyright 2004
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <serial.h>
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#include <devices.h>
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DECLARE_GLOBAL_DATA_PTR;
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#if defined(CONFIG_SERIAL_MULTI)
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static struct serial_device *serial_devices = NULL;
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static struct serial_device *serial_current = NULL;
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#ifndef CONFIG_LWMON
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struct serial_device *default_serial_console (void)
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{
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#if defined(CONFIG_8xx_CONS_SMC1) || defined(CONFIG_8xx_CONS_SMC2)
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return &serial_smc_device;
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#elif defined(CONFIG_8xx_CONS_SCC1) || defined(CONFIG_8xx_CONS_SCC2) \
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|| defined(CONFIG_8xx_CONS_SCC3) || defined(CONFIG_8xx_CONS_SCC4)
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return &serial_scc_device;
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#elif defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_440) \
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|| defined(CONFIG_405EP) || defined(CONFIG_MPC5xxx)
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return &serial0_device;
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#else
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#error No default console
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#endif
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}
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#endif
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static int serial_register (struct serial_device *dev)
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{
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dev->init += gd->reloc_off;
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dev->setbrg += gd->reloc_off;
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dev->getc += gd->reloc_off;
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dev->tstc += gd->reloc_off;
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dev->putc += gd->reloc_off;
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dev->puts += gd->reloc_off;
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dev->next = serial_devices;
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serial_devices = dev;
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return 0;
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}
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void serial_initialize (void)
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{
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#if defined(CONFIG_8xx_CONS_SMC1) || defined(CONFIG_8xx_CONS_SMC2)
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serial_register (&serial_smc_device);
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#endif
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#if defined(CONFIG_8xx_CONS_SCC1) || defined(CONFIG_8xx_CONS_SCC2) \
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|| defined(CONFIG_8xx_CONS_SCC3) || defined(CONFIG_8xx_CONS_SCC4)
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serial_register (&serial_scc_device);
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#endif
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#if defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_440) \
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|| defined(CONFIG_405EP) || defined(CONFIG_MPC5xxx)
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serial_register(&serial0_device);
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serial_register(&serial1_device);
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#endif
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serial_assign (default_serial_console ()->name);
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}
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void serial_devices_init (void)
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{
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device_t dev;
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struct serial_device *s = serial_devices;
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while (s) {
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memset (&dev, 0, sizeof (dev));
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strcpy (dev.name, s->name);
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dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT;
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dev.start = s->init;
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dev.putc = s->putc;
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dev.puts = s->puts;
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dev.getc = s->getc;
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dev.tstc = s->tstc;
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device_register (&dev);
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s = s->next;
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}
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}
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int serial_assign (char *name)
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{
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struct serial_device *s;
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for (s = serial_devices; s; s = s->next) {
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if (strcmp (s->name, name) == 0) {
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serial_current = s;
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return 0;
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}
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}
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return 1;
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}
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void serial_reinit_all (void)
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{
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struct serial_device *s;
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for (s = serial_devices; s; s = s->next) {
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s->init ();
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}
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}
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int serial_init (void)
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{
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if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
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struct serial_device *dev = default_serial_console ();
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return dev->init ();
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}
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return serial_current->init ();
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}
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void serial_setbrg (void)
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{
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if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
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struct serial_device *dev = default_serial_console ();
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dev->setbrg ();
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return;
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}
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serial_current->setbrg ();
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}
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int serial_getc (void)
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{
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if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
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struct serial_device *dev = default_serial_console ();
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return dev->getc ();
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}
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return serial_current->getc ();
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}
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int serial_tstc (void)
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{
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if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
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struct serial_device *dev = default_serial_console ();
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return dev->tstc ();
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}
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return serial_current->tstc ();
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}
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void serial_putc (const char c)
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{
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if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
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struct serial_device *dev = default_serial_console ();
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dev->putc (c);
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return;
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}
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serial_current->putc (c);
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}
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void serial_puts (const char *s)
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{
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if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
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struct serial_device *dev = default_serial_console ();
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dev->puts (s);
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return;
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}
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serial_current->puts (s);
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}
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#endif /* CONFIG_SERIAL_MULTI */
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