]>
git.ipfire.org Git - people/ms/u-boot.git/blob - common/serial.c
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
28 DECLARE_GLOBAL_DATA_PTR
;
30 #if defined(CONFIG_SERIAL_MULTI)
32 static struct serial_device
*serial_devices
= NULL
;
33 static struct serial_device
*serial_current
= NULL
;
36 struct serial_device
*default_serial_console (void)
38 #if defined(CONFIG_8xx_CONS_SMC1) || defined(CONFIG_8xx_CONS_SMC2)
39 return &serial_smc_device
;
40 #elif defined(CONFIG_8xx_CONS_SCC1) || defined(CONFIG_8xx_CONS_SCC2) \
41 || defined(CONFIG_8xx_CONS_SCC3) || defined(CONFIG_8xx_CONS_SCC4)
42 return &serial_scc_device
;
43 #elif defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_440) \
44 || defined(CONFIG_405EP) || defined(CONFIG_MPC5xxx)
45 return &serial0_device
;
47 #error No default console
52 static int serial_register (struct serial_device
*dev
)
54 dev
->init
+= gd
->reloc_off
;
55 dev
->setbrg
+= gd
->reloc_off
;
56 dev
->getc
+= gd
->reloc_off
;
57 dev
->tstc
+= gd
->reloc_off
;
58 dev
->putc
+= gd
->reloc_off
;
59 dev
->puts
+= gd
->reloc_off
;
61 dev
->next
= serial_devices
;
67 void serial_initialize (void)
69 #if defined(CONFIG_8xx_CONS_SMC1) || defined(CONFIG_8xx_CONS_SMC2)
70 serial_register (&serial_smc_device
);
72 #if defined(CONFIG_8xx_CONS_SCC1) || defined(CONFIG_8xx_CONS_SCC2) \
73 || defined(CONFIG_8xx_CONS_SCC3) || defined(CONFIG_8xx_CONS_SCC4)
74 serial_register (&serial_scc_device
);
77 #if defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_440) \
78 || defined(CONFIG_405EP) || defined(CONFIG_MPC5xxx)
79 serial_register(&serial0_device
);
80 serial_register(&serial1_device
);
83 serial_assign (default_serial_console ()->name
);
86 void serial_devices_init (void)
89 struct serial_device
*s
= serial_devices
;
92 memset (&dev
, 0, sizeof (dev
));
94 strcpy (dev
.name
, s
->name
);
95 dev
.flags
= DEV_FLAGS_OUTPUT
| DEV_FLAGS_INPUT
;
103 device_register (&dev
);
109 int serial_assign (char *name
)
111 struct serial_device
*s
;
113 for (s
= serial_devices
; s
; s
= s
->next
) {
114 if (strcmp (s
->name
, name
) == 0) {
123 void serial_reinit_all (void)
125 struct serial_device
*s
;
127 for (s
= serial_devices
; s
; s
= s
->next
) {
132 int serial_init (void)
134 if (!(gd
->flags
& GD_FLG_RELOC
) || !serial_current
) {
135 struct serial_device
*dev
= default_serial_console ();
140 return serial_current
->init ();
143 void serial_setbrg (void)
145 if (!(gd
->flags
& GD_FLG_RELOC
) || !serial_current
) {
146 struct serial_device
*dev
= default_serial_console ();
152 serial_current
->setbrg ();
155 int serial_getc (void)
157 if (!(gd
->flags
& GD_FLG_RELOC
) || !serial_current
) {
158 struct serial_device
*dev
= default_serial_console ();
163 return serial_current
->getc ();
166 int serial_tstc (void)
168 if (!(gd
->flags
& GD_FLG_RELOC
) || !serial_current
) {
169 struct serial_device
*dev
= default_serial_console ();
174 return serial_current
->tstc ();
177 void serial_putc (const char c
)
179 if (!(gd
->flags
& GD_FLG_RELOC
) || !serial_current
) {
180 struct serial_device
*dev
= default_serial_console ();
186 serial_current
->putc (c
);
189 void serial_puts (const char *s
)
191 if (!(gd
->flags
& GD_FLG_RELOC
) || !serial_current
) {
192 struct serial_device
*dev
= default_serial_console ();
198 serial_current
->puts (s
);
201 #endif /* CONFIG_SERIAL_MULTI */