u-boot/cmd/cmd_terminal.c
Simon Glass 72a8cf8dcc Move all command code into its own directory
There are a lot of unrelated files in common, including all of the commands.
Moving them into their own directory makes them easier to find and is more
logical.

Some commands include non-command code, such as cmd_scsi.c. This should be
sorted out at some point so that the function can be enabled with or without
the associated command.

Unfortunately, with m68k I get this error:

m68k:  +   M5329AFEE
+arch/m68k/cpu/mcf532x/start.o: In function `_start':
+arch/m68k/cpu/mcf532x/start.S:159:(.text+0x452): relocation truncated to fit: R_68K_PC16 against symbol `board_init_f' defined in .text.board_init_f section in common/built-in.o

I hope someone can shed some light on what this means. I hope it isn't
depending on the position of code in the image.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>
2016-01-25 10:39:43 -05:00

76 lines
1.4 KiB
C

/*
* (C) Copyright 2007 OpenMoko, Inc.
* Written by Harald Welte <laforge@openmoko.org>
*
* SPDX-License-Identifier: GPL-2.0+
*/
/*
* Boot support
*/
#include <common.h>
#include <command.h>
#include <stdio_dev.h>
#include <serial.h>
int do_terminal(cmd_tbl_t * 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;
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()) {
c = stdio_devices[0]->getc();
if (last_tilde == 1) {
if (c == '.') {
putc(c);
putc('\n');
break;
} else {
last_tilde = 0;
/* write the delayed tilde */
dev->putc('~');
/* fall-through to print current
* character */
}
}
if (c == '~') {
last_tilde = 1;
puts("[u-boot]");
putc(c);
}
dev->putc(c);
}
/* read from serial port and display on console */
if (dev->tstc()) {
c = dev->getc();
putc(c);
}
}
return 0;
}
/***************************************************/
U_BOOT_CMD(
terminal, 3, 1, do_terminal,
"start terminal emulator",
""
);