3 * Gary Jennejohn, DENX Software Engineering GmbH, garyj@denx.de.
5 * SPDX-License-Identifier: GPL-2.0+
12 #ifdef CONFIG_CONSOLE_MUX
13 void iomux_printdevs(const int console)
16 struct stdio_dev *dev;
18 for (i = 0; i < cd_count[console]; i++) {
19 dev = console_devices[console][i];
20 printf("%s ", dev->name);
25 /* This tries to preserve the old list if an error occurs. */
26 int iomux_doenv(const int console, const char *arg)
28 char *console_args, *temp, **start;
29 int i, j, k, io_flag, cs_idx, repeat;
30 struct stdio_dev *dev;
31 struct stdio_dev **cons_set;
33 console_args = strdup(arg);
34 if (console_args == NULL)
37 * Check whether a comma separated list of devices was
38 * entered and count how many devices were entered.
39 * The array start[] has pointers to the beginning of
40 * each device name (up to MAX_CONSARGS devices).
42 * Have to do this twice - once to count the number of
43 * commas and then again to populate start.
48 temp = strchr(temp, ',');
54 /* There's always one entry more than the number of commas. */
58 start = (char **)malloc(i * sizeof(char *));
64 start[0] = console_args;
66 temp = strchr(start[i++], ',');
72 cons_set = (struct stdio_dev **)calloc(i, sizeof(struct stdio_dev *));
73 if (cons_set == NULL) {
81 io_flag = DEV_FLAGS_INPUT;
85 io_flag = DEV_FLAGS_OUTPUT;
95 for (j = 0; j < i; j++) {
97 * Check whether the device exists and is valid.
98 * console_assign() also calls search_device(),
99 * but I need the pointer to the device.
101 dev = search_device(io_flag, start[j]);
105 * Prevent multiple entries for a device.
108 for (k = 0; k < cs_idx; k++) {
109 if (dev == cons_set[k]) {
117 * Try assigning the specified device.
118 * This could screw up the console settings for apps.
120 if (console_assign(console, start[j]) < 0)
122 cons_set[cs_idx++] = dev;
126 /* failed to set any console */
131 /* Works even if console_devices[console] is NULL. */
132 console_devices[console] =
133 (struct stdio_dev **)realloc(console_devices[console],
134 cs_idx * sizeof(struct stdio_dev *));
135 if (console_devices[console] == NULL) {
139 memcpy(console_devices[console], cons_set, cs_idx *
140 sizeof(struct stdio_dev *));
142 cd_count[console] = cs_idx;
147 #endif /* CONFIG_CONSOLE_MUX */