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>
76 lines
1.4 KiB
C
76 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2007 OpenMoko, Inc.
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* Written by Harald Welte <laforge@openmoko.org>
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*/
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/*
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* Boot support
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*/
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#include <common.h>
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#include <command.h>
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#include <stdio_dev.h>
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#include <serial.h>
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int do_terminal(cmd_tbl_t * cmd, int flag, int argc, char * const argv[])
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{
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int last_tilde = 0;
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struct stdio_dev *dev = NULL;
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if (argc < 1)
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return -1;
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/* Scan for selected output/input device */
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dev = stdio_get_by_name(argv[1]);
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if (!dev)
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return -1;
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serial_reinit_all();
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printf("Entering terminal mode for port %s\n", dev->name);
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puts("Use '~.' to leave the terminal and get back to u-boot\n");
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while (1) {
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int c;
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/* read from console and display on serial port */
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if (stdio_devices[0]->tstc()) {
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c = stdio_devices[0]->getc();
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if (last_tilde == 1) {
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if (c == '.') {
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putc(c);
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putc('\n');
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break;
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} else {
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last_tilde = 0;
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/* write the delayed tilde */
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dev->putc('~');
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/* fall-through to print current
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* character */
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}
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}
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if (c == '~') {
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last_tilde = 1;
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puts("[u-boot]");
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putc(c);
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}
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dev->putc(c);
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}
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/* read from serial port and display on console */
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if (dev->tstc()) {
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c = dev->getc();
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putc(c);
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}
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}
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return 0;
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}
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/***************************************************/
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U_BOOT_CMD(
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terminal, 3, 1, do_terminal,
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"start terminal emulator",
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""
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);
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