2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-12-14 15:23:07 +00:00
u-boot/cmd/terminal.c
Asherah Connor ac3821430e terminal: only serial_reinit_all if available
serial_reinit_all() is only available if CONFIG_SERIAL is defined (i.e.
!CONFIG_DM_SERIAL).

Signed-off-by: Asherah Connor <ashe@kivikakk.ee>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-04-12 17:44:55 -04:00

77 lines
1.5 KiB
C

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