mirror of
https://github.com/AsahiLinux/u-boot
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
147 lines
3.1 KiB
C
147 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2008
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* Gary Jennejohn, DENX Software Engineering GmbH, garyj@denx.de.
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*/
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#include <common.h>
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#include <console.h>
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#include <serial.h>
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#include <malloc.h>
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#if CONFIG_IS_ENABLED(CONSOLE_MUX)
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void iomux_printdevs(const int console)
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{
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int i;
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struct stdio_dev *dev;
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for (i = 0; i < cd_count[console]; i++) {
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dev = console_devices[console][i];
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printf("%s ", dev->name);
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}
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printf("\n");
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}
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/* This tries to preserve the old list if an error occurs. */
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int iomux_doenv(const int console, const char *arg)
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{
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char *console_args, *temp, **start;
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int i, j, k, io_flag, cs_idx, repeat;
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struct stdio_dev *dev;
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struct stdio_dev **cons_set;
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console_args = strdup(arg);
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if (console_args == NULL)
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return 1;
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/*
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* Check whether a comma separated list of devices was
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* entered and count how many devices were entered.
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* The array start[] has pointers to the beginning of
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* each device name (up to MAX_CONSARGS devices).
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*
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* Have to do this twice - once to count the number of
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* commas and then again to populate start.
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*/
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i = 0;
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temp = console_args;
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for (;;) {
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temp = strchr(temp, ',');
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if (temp != NULL) {
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i++;
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temp++;
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continue;
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}
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/* There's always one entry more than the number of commas. */
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i++;
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break;
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}
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start = (char **)malloc(i * sizeof(char *));
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if (start == NULL) {
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free(console_args);
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return 1;
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}
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i = 0;
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start[0] = console_args;
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for (;;) {
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temp = strchr(start[i++], ',');
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if (temp == NULL)
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break;
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*temp = '\0';
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start[i] = temp + 1;
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}
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cons_set = (struct stdio_dev **)calloc(i, sizeof(struct stdio_dev *));
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if (cons_set == NULL) {
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free(start);
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free(console_args);
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return 1;
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}
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switch (console) {
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case stdin:
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io_flag = DEV_FLAGS_INPUT;
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break;
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case stdout:
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case stderr:
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io_flag = DEV_FLAGS_OUTPUT;
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break;
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default:
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free(start);
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free(console_args);
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free(cons_set);
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return 1;
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}
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cs_idx = 0;
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for (j = 0; j < i; j++) {
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/*
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* Check whether the device exists and is valid.
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* console_assign() also calls search_device(),
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* but I need the pointer to the device.
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*/
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dev = search_device(io_flag, start[j]);
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if (dev == NULL)
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continue;
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/*
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* Prevent multiple entries for a device.
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*/
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repeat = 0;
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for (k = 0; k < cs_idx; k++) {
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if (dev == cons_set[k]) {
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repeat++;
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break;
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}
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}
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if (repeat)
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continue;
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/*
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* Try assigning the specified device.
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* This could screw up the console settings for apps.
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*/
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if (console_assign(console, start[j]) < 0)
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continue;
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cons_set[cs_idx++] = dev;
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}
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free(console_args);
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free(start);
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/* failed to set any console */
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if (cs_idx == 0) {
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free(cons_set);
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return 1;
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} else {
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/* Works even if console_devices[console] is NULL. */
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console_devices[console] =
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(struct stdio_dev **)realloc(console_devices[console],
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cs_idx * sizeof(struct stdio_dev *));
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if (console_devices[console] == NULL) {
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free(cons_set);
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return 1;
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}
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memcpy(console_devices[console], cons_set, cs_idx *
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sizeof(struct stdio_dev *));
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cd_count[console] = cs_idx;
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}
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free(cons_set);
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return 0;
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}
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#endif /* CONSOLE_MUX */
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