]>
git.ipfire.org Git - people/ms/u-boot.git/blob - common/iomux.c
3 * Gary Jennejohn, DENX Software Engineering GmbH, garyj@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 #ifdef CONFIG_CONSOLE_MUX
29 void iomux_printdevs(const int console
)
32 struct stdio_dev
*dev
;
34 for (i
= 0; i
< cd_count
[console
]; i
++) {
35 dev
= console_devices
[console
][i
];
36 printf("%s ", dev
->name
);
41 /* This tries to preserve the old list if an error occurs. */
42 int iomux_doenv(const int console
, const char *arg
)
44 char *console_args
, *temp
, **start
;
45 int i
, j
, k
, io_flag
, cs_idx
, repeat
;
46 struct stdio_dev
*dev
;
47 struct stdio_dev
**cons_set
;
49 console_args
= strdup(arg
);
50 if (console_args
== NULL
)
53 * Check whether a comma separated list of devices was
54 * entered and count how many devices were entered.
55 * The array start[] has pointers to the beginning of
56 * each device name (up to MAX_CONSARGS devices).
58 * Have to do this twice - once to count the number of
59 * commas and then again to populate start.
64 temp
= strchr(temp
, ',');
70 /* There's always one entry more than the number of commas. */
74 start
= (char **)malloc(i
* sizeof(char *));
80 start
[0] = console_args
;
82 temp
= strchr(start
[i
++], ',');
88 cons_set
= (struct stdio_dev
**)calloc(i
, sizeof(struct stdio_dev
*));
89 if (cons_set
== NULL
) {
97 io_flag
= DEV_FLAGS_INPUT
;
101 io_flag
= DEV_FLAGS_OUTPUT
;
111 for (j
= 0; j
< i
; j
++) {
113 * Check whether the device exists and is valid.
114 * console_assign() also calls search_device(),
115 * but I need the pointer to the device.
117 dev
= search_device(io_flag
, start
[j
]);
121 * Prevent multiple entries for a device.
124 for (k
= 0; k
< cs_idx
; k
++) {
125 if (dev
== cons_set
[k
]) {
133 * Try assigning the specified device.
134 * This could screw up the console settings for apps.
136 if (console_assign(console
, start
[j
]) < 0)
138 #ifdef CONFIG_SERIAL_MULTI
140 * This was taken from common/cmd_nvedit.c.
141 * This will never work because serial_assign() returns
142 * 1 upon error, not -1.
143 * This would almost always return an error anyway because
144 * serial_assign() expects the name of a serial device, like
145 * serial_smc, but the user generally only wants to set serial.
147 if (serial_assign(start
[j
]) < 0)
150 cons_set
[cs_idx
++] = dev
;
154 /* failed to set any console */
159 /* Works even if console_devices[console] is NULL. */
160 console_devices
[console
] =
161 (struct stdio_dev
**)realloc(console_devices
[console
],
162 cs_idx
* sizeof(struct stdio_dev
*));
163 if (console_devices
[console
] == NULL
) {
167 memcpy(console_devices
[console
], cons_set
, cs_idx
*
168 sizeof(struct stdio_dev
*));
170 cd_count
[console
] = cs_idx
;
175 #endif /* CONFIG_CONSOLE_MUX */