2002-11-03 00:01:44 +00:00
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/*
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* (C) Copyright 2000
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* Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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2007-07-05 16:01:46 +00:00
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#include <config.h>
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2002-11-03 00:01:44 +00:00
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#include <common.h>
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#include <stdarg.h>
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#include <malloc.h>
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2007-07-05 16:01:59 +00:00
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#include <param.h>
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2002-11-03 00:01:44 +00:00
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#include <console.h>
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2007-07-05 16:01:48 +00:00
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#include <driver.h>
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#include <fs.h>
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2013-07-10 07:27:06 +00:00
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#include <of.h>
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2007-07-12 07:31:07 +00:00
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#include <init.h>
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2007-09-21 19:30:59 +00:00
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#include <clock.h>
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#include <kfifo.h>
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2007-10-01 08:26:45 +00:00
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#include <module.h>
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2010-12-18 10:25:34 +00:00
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#include <poller.h>
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2015-11-26 08:47:23 +00:00
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#include <ratp_bb.h>
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2013-11-26 12:08:28 +00:00
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#include <magicvar.h>
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#include <globalvar.h>
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2009-11-02 13:31:18 +00:00
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#include <linux/list.h>
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2011-01-18 12:31:29 +00:00
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#include <linux/stringify.h>
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2012-10-16 10:05:53 +00:00
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#include <debug_ll.h>
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2002-11-03 00:01:44 +00:00
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2007-10-11 18:36:57 +00:00
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LIST_HEAD(console_list);
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EXPORT_SYMBOL(console_list);
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2007-07-12 07:31:07 +00:00
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2012-01-26 09:25:42 +00:00
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#define CONSOLE_UNINITIALIZED 0
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#define CONSOLE_INITIALIZED_BUFFER 1
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#define CONSOLE_INIT_FULL 2
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2007-07-12 07:31:07 +00:00
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2012-02-25 13:24:38 +00:00
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#define to_console_dev(d) container_of(d, struct console_device, class_dev)
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2011-09-26 16:55:07 +00:00
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static int initialized = 0;
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2007-07-05 16:01:48 +00:00
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2012-10-06 20:57:02 +00:00
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#define CONSOLE_BUFFER_SIZE 1024
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static char console_input_buffer[CONSOLE_BUFFER_SIZE];
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static char console_output_buffer[CONSOLE_BUFFER_SIZE];
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static struct kfifo __console_input_fifo;
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static struct kfifo __console_output_fifo;
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static struct kfifo *console_input_fifo = &__console_input_fifo;
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static struct kfifo *console_output_fifo = &__console_output_fifo;
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2015-06-08 09:05:30 +00:00
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int console_set_active(struct console_device *cdev, unsigned flag)
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2007-07-05 16:01:59 +00:00
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{
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2015-06-08 09:05:30 +00:00
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int ret, i;
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2013-07-07 12:27:17 +00:00
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2015-06-08 09:05:30 +00:00
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if (!cdev->getc)
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flag &= ~CONSOLE_STDIN;
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if (!cdev->putc)
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flag &= ~(CONSOLE_STDOUT | CONSOLE_STDERR);
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2007-07-05 16:01:59 +00:00
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2015-07-20 09:38:04 +00:00
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if (!flag && cdev->f_active && cdev->flush)
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cdev->flush(cdev);
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2014-12-17 14:08:01 +00:00
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if (cdev->set_active) {
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ret = cdev->set_active(cdev, flag);
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if (ret)
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return ret;
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}
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2007-07-05 16:01:59 +00:00
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cdev->f_active = flag;
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2015-06-08 09:05:30 +00:00
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if (IS_ENABLED(CONFIG_PARAMETER)) {
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i = 0;
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if (flag & CONSOLE_STDIN)
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cdev->active[i++] = 'i';
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if (flag & CONSOLE_STDOUT)
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cdev->active[i++] = 'o';
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if (flag & CONSOLE_STDERR)
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cdev->active[i++] = 'e';
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cdev->active[i] = 0;
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}
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2010-06-03 08:13:29 +00:00
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2012-10-06 20:57:02 +00:00
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if (initialized < CONSOLE_INIT_FULL) {
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char ch;
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initialized = CONSOLE_INIT_FULL;
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2013-08-25 15:14:57 +00:00
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puts_ll("Switch to console [");
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2015-06-08 09:05:30 +00:00
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puts_ll(dev_name(&cdev->class_dev));
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2013-08-25 15:14:57 +00:00
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puts_ll("]\n");
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2012-10-06 20:57:02 +00:00
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barebox_banner();
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while (kfifo_getc(console_output_fifo, &ch) == 0)
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console_putc(CONSOLE_STDOUT, ch);
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}
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2007-07-05 16:01:59 +00:00
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return 0;
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}
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2015-06-08 09:05:30 +00:00
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unsigned console_get_active(struct console_device *cdev)
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{
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return cdev->f_active;
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}
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static int console_active_set(struct device_d *dev, struct param_d *param,
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const char *val)
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{
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struct console_device *cdev = to_console_dev(dev);
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unsigned int flag = 0;
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if (val) {
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if (strchr(val, 'i'))
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flag |= CONSOLE_STDIN;
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if (strchr(val, 'o'))
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flag |= CONSOLE_STDOUT;
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if (strchr(val, 'e'))
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flag |= CONSOLE_STDERR;
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}
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return console_set_active(cdev, flag);
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}
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static const char *console_active_get(struct device_d *dev,
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struct param_d *param)
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{
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struct console_device *cdev = to_console_dev(dev);
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return cdev->active;
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}
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2015-06-08 09:16:46 +00:00
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int console_set_baudrate(struct console_device *cdev, unsigned baudrate)
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2007-07-05 16:02:17 +00:00
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{
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2015-06-08 09:16:46 +00:00
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int ret;
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2009-02-06 13:25:04 +00:00
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unsigned char c;
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2007-07-05 16:02:17 +00:00
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2015-06-08 09:16:46 +00:00
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if (!cdev->setbrg)
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return -ENOSYS;
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if (cdev->baudrate == baudrate)
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return 0;
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2013-07-10 10:15:10 +00:00
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/*
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* If the device is already active, change its baudrate.
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* The baudrate of an inactive device will be set at activation time.
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*/
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2007-07-05 16:02:17 +00:00
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if (cdev->f_active) {
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2015-06-08 12:31:55 +00:00
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printf("## Switch baudrate on console %s to %d bps and press ENTER ...\n",
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dev_name(&cdev->class_dev), baudrate);
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2007-07-05 16:02:17 +00:00
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mdelay(50);
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2015-06-08 09:16:46 +00:00
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}
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ret = cdev->setbrg(cdev, baudrate);
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if (ret)
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return ret;
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if (cdev->f_active) {
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2007-07-05 16:02:17 +00:00
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mdelay(50);
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2009-02-06 13:25:04 +00:00
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do {
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c = getc();
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} while (c != '\r' && c != '\n');
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2013-07-10 10:15:10 +00:00
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}
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2007-07-05 16:02:17 +00:00
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2015-06-08 09:16:46 +00:00
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cdev->baudrate = baudrate;
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cdev->baudrate_param = baudrate;
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2007-07-05 16:02:17 +00:00
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return 0;
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}
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2015-06-08 09:16:46 +00:00
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unsigned console_get_baudrate(struct console_device *cdev)
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{
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return cdev->baudrate;
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}
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static int console_baudrate_set(struct param_d *param, void *priv)
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{
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struct console_device *cdev = priv;
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return console_set_baudrate(cdev, cdev->baudrate_param);
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}
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2012-01-26 09:25:42 +00:00
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static void console_init_early(void)
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2009-05-13 14:23:09 +00:00
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{
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2012-01-26 09:25:42 +00:00
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kfifo_init(console_input_fifo, console_input_buffer,
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CONSOLE_BUFFER_SIZE);
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kfifo_init(console_output_fifo, console_output_buffer,
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CONSOLE_BUFFER_SIZE);
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2009-05-13 14:23:09 +00:00
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2012-01-26 09:25:42 +00:00
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initialized = CONSOLE_INITIALIZED_BUFFER;
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}
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2009-05-13 14:23:09 +00:00
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2013-11-26 12:08:28 +00:00
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static void console_set_stdoutpath(struct console_device *cdev)
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{
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int id;
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char *str;
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if (!cdev->linux_console_name)
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return;
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id = of_alias_get_id(cdev->dev->device_node, "serial");
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if (id < 0)
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return;
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str = asprintf("console=%s%d,%dn8", cdev->linux_console_name,
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id, cdev->baudrate);
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globalvar_add_simple("linux.bootargs.console", str);
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free(str);
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}
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2014-06-04 07:17:31 +00:00
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static int __console_puts(struct console_device *cdev, const char *s)
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{
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int n = 0;
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while (*s) {
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if (*s == '\n') {
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cdev->putc(cdev, '\r');
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n++;
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}
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cdev->putc(cdev, *s);
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n++;
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s++;
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}
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return n;
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}
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2007-07-05 16:01:48 +00:00
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int console_register(struct console_device *newcdev)
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2002-11-03 00:01:44 +00:00
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{
|
2009-06-11 13:33:49 +00:00
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struct device_d *dev = &newcdev->class_dev;
|
2015-11-11 11:54:18 +00:00
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int activate = 0, ret;
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2007-07-05 16:01:48 +00:00
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2012-01-26 09:25:42 +00:00
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if (initialized == CONSOLE_UNINITIALIZED)
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console_init_early();
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|
2014-07-08 13:02:53 +00:00
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if (newcdev->devname) {
|
2015-01-13 06:11:49 +00:00
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dev->id = newcdev->devid;
|
2014-07-08 13:02:53 +00:00
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strcpy(dev->name, newcdev->devname);
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} else {
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dev->id = DEVICE_ID_DYNAMIC;
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strcpy(dev->name, "cs");
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}
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2011-08-15 07:36:37 +00:00
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if (newcdev->dev)
|
2012-12-12 13:55:40 +00:00
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dev->parent = newcdev->dev;
|
2012-09-19 19:22:17 +00:00
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platform_device_register(dev);
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2009-06-11 13:33:49 +00:00
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2007-07-05 16:02:18 +00:00
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if (newcdev->setbrg) {
|
2015-11-11 11:54:18 +00:00
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ret = newcdev->setbrg(newcdev, CONFIG_BAUDRATE);
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if (ret)
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return ret;
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2013-04-06 09:25:28 +00:00
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newcdev->baudrate = CONFIG_BAUDRATE;
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dev_add_param_int(dev, "baudrate", console_baudrate_set,
|
2015-06-08 09:16:46 +00:00
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NULL, &newcdev->baudrate_param, "%u", newcdev);
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2007-07-05 16:02:17 +00:00
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}
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2014-06-04 07:17:31 +00:00
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if (newcdev->putc && !newcdev->puts)
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newcdev->puts = __console_puts;
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2015-06-08 09:05:30 +00:00
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dev_add_param(dev, "active", console_active_set, console_active_get, 0);
|
2007-07-05 16:02:17 +00:00
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2012-10-06 20:57:02 +00:00
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if (IS_ENABLED(CONFIG_CONSOLE_ACTIVATE_FIRST)) {
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if (list_empty(&console_list))
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activate = 1;
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} else if (IS_ENABLED(CONFIG_CONSOLE_ACTIVATE_ALL)) {
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activate = 1;
|
2007-10-19 09:04:33 +00:00
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}
|
2007-07-05 16:01:48 +00:00
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2013-11-26 12:08:28 +00:00
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if (newcdev->dev && of_device_is_stdout_path(newcdev->dev)) {
|
2012-10-06 22:15:17 +00:00
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activate = 1;
|
2013-11-26 12:08:28 +00:00
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console_set_stdoutpath(newcdev);
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}
|
2012-10-06 22:15:17 +00:00
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2007-10-11 18:36:57 +00:00
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list_add_tail(&newcdev->list, &console_list);
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2015-06-08 09:05:30 +00:00
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if (activate)
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console_set_active(newcdev, CONSOLE_STDIN |
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CONSOLE_STDOUT | CONSOLE_STDERR);
|
2007-10-19 09:04:33 +00:00
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2007-10-11 18:36:57 +00:00
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return 0;
|
2007-07-05 16:01:48 +00:00
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}
|
2007-10-07 12:27:24 +00:00
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EXPORT_SYMBOL(console_register);
|
2002-11-03 00:01:44 +00:00
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|
2011-11-24 03:01:26 +00:00
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int console_unregister(struct console_device *cdev)
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{
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struct device_d *dev = &cdev->class_dev;
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int status;
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list_del(&cdev->list);
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if (list_empty(&console_list))
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initialized = CONSOLE_UNINITIALIZED;
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status = unregister_device(dev);
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|
if (!status)
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|
memset(cdev, 0, sizeof(*cdev));
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|
return status;
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|
}
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|
EXPORT_SYMBOL(console_unregister);
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|
2009-09-16 14:21:48 +00:00
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|
static int getc_raw(void)
|
2007-07-05 16:01:48 +00:00
|
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|
{
|
2007-10-11 18:36:57 +00:00
|
|
|
struct console_device *cdev;
|
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|
|
int active = 0;
|
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|
|
|
2007-07-05 16:01:48 +00:00
|
|
|
while (1) {
|
2007-10-11 18:36:57 +00:00
|
|
|
for_each_console(cdev) {
|
|
|
|
if (!(cdev->f_active & CONSOLE_STDIN))
|
|
|
|
continue;
|
|
|
|
active = 1;
|
2015-11-26 08:47:23 +00:00
|
|
|
if (cdev->tstc(cdev)) {
|
|
|
|
int ch = cdev->getc(cdev);
|
|
|
|
|
|
|
|
if (IS_ENABLED(CONFIG_RATP) && ch == 0x01) {
|
|
|
|
barebox_ratp(cdev);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return ch;
|
|
|
|
}
|
2007-10-11 18:36:57 +00:00
|
|
|
}
|
|
|
|
if (!active)
|
|
|
|
/* no active console found. bail out */
|
|
|
|
return -1;
|
2007-07-05 16:01:48 +00:00
|
|
|
}
|
|
|
|
}
|
2002-11-03 00:01:44 +00:00
|
|
|
|
2011-05-13 13:53:29 +00:00
|
|
|
static int tstc_raw(void)
|
|
|
|
{
|
|
|
|
struct console_device *cdev;
|
|
|
|
|
|
|
|
for_each_console(cdev) {
|
|
|
|
if (!(cdev->f_active & CONSOLE_STDIN))
|
|
|
|
continue;
|
|
|
|
if (cdev->tstc(cdev))
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2007-09-21 19:30:59 +00:00
|
|
|
int getc(void)
|
|
|
|
{
|
|
|
|
unsigned char ch;
|
|
|
|
uint64_t start;
|
|
|
|
|
2009-05-13 14:11:24 +00:00
|
|
|
/*
|
|
|
|
* For 100us we read the characters from the serial driver
|
|
|
|
* into a kfifo. This helps us not to lose characters
|
|
|
|
* in small hardware fifos.
|
|
|
|
*/
|
2007-09-21 19:30:59 +00:00
|
|
|
start = get_time_ns();
|
|
|
|
while (1) {
|
2011-05-13 13:53:29 +00:00
|
|
|
if (tstc_raw()) {
|
2015-11-26 08:47:23 +00:00
|
|
|
int c = getc_raw();
|
|
|
|
|
|
|
|
if (c < 0)
|
|
|
|
break;
|
|
|
|
|
|
|
|
kfifo_putc(console_input_fifo, c);
|
2007-09-21 19:30:59 +00:00
|
|
|
|
|
|
|
start = get_time_ns();
|
|
|
|
}
|
2015-11-26 08:47:23 +00:00
|
|
|
|
2009-05-13 14:11:24 +00:00
|
|
|
if (is_timeout(start, 100 * USECOND) &&
|
2012-01-26 09:25:42 +00:00
|
|
|
kfifo_len(console_input_fifo))
|
2007-09-21 19:30:59 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2015-11-26 08:47:23 +00:00
|
|
|
if (!kfifo_len(console_input_fifo))
|
|
|
|
return -1;
|
|
|
|
|
2012-01-26 09:25:42 +00:00
|
|
|
kfifo_getc(console_input_fifo, &ch);
|
2015-11-26 08:47:23 +00:00
|
|
|
|
2007-09-21 19:30:59 +00:00
|
|
|
return ch;
|
|
|
|
}
|
2007-10-07 12:27:24 +00:00
|
|
|
EXPORT_SYMBOL(getc);
|
2007-09-21 19:30:59 +00:00
|
|
|
|
2007-07-05 16:01:48 +00:00
|
|
|
int fgetc(int fd)
|
|
|
|
{
|
|
|
|
char c;
|
2002-11-03 00:01:44 +00:00
|
|
|
|
2007-07-05 16:01:48 +00:00
|
|
|
if (!fd)
|
|
|
|
return getc();
|
|
|
|
return read(fd, &c, 1);
|
2002-11-03 00:01:44 +00:00
|
|
|
}
|
2007-10-07 12:27:24 +00:00
|
|
|
EXPORT_SYMBOL(fgetc);
|
2002-11-03 00:01:44 +00:00
|
|
|
|
2007-07-05 16:01:50 +00:00
|
|
|
int tstc(void)
|
2002-11-03 00:01:44 +00:00
|
|
|
{
|
2012-01-26 09:25:42 +00:00
|
|
|
return kfifo_len(console_input_fifo) || tstc_raw();
|
2002-11-03 00:01:44 +00:00
|
|
|
}
|
2007-10-07 12:27:24 +00:00
|
|
|
EXPORT_SYMBOL(tstc);
|
2002-11-03 00:01:44 +00:00
|
|
|
|
2007-07-05 16:01:48 +00:00
|
|
|
void console_putc(unsigned int ch, char c)
|
2002-11-03 00:01:44 +00:00
|
|
|
{
|
2007-10-11 18:36:57 +00:00
|
|
|
struct console_device *cdev;
|
2011-09-26 16:55:07 +00:00
|
|
|
int init = initialized;
|
2007-07-05 16:01:48 +00:00
|
|
|
|
2007-07-12 07:31:07 +00:00
|
|
|
switch (init) {
|
|
|
|
case CONSOLE_UNINITIALIZED:
|
2012-01-26 09:25:42 +00:00
|
|
|
console_init_early();
|
|
|
|
/* fall through */
|
|
|
|
|
|
|
|
case CONSOLE_INITIALIZED_BUFFER:
|
|
|
|
kfifo_putc(console_output_fifo, c);
|
2013-08-25 15:14:57 +00:00
|
|
|
putc_ll(c);
|
2007-07-12 07:31:07 +00:00
|
|
|
return;
|
|
|
|
|
|
|
|
case CONSOLE_INIT_FULL:
|
2007-10-11 18:36:57 +00:00
|
|
|
for_each_console(cdev) {
|
2007-07-12 07:31:07 +00:00
|
|
|
if (cdev->f_active & ch) {
|
|
|
|
if (c == '\n')
|
|
|
|
cdev->putc(cdev, '\r');
|
2009-08-04 12:22:45 +00:00
|
|
|
cdev->putc(cdev, c);
|
2007-07-12 07:31:07 +00:00
|
|
|
}
|
2007-07-05 16:02:17 +00:00
|
|
|
}
|
2007-07-12 07:31:07 +00:00
|
|
|
return;
|
|
|
|
default:
|
|
|
|
/* If we have problems inititalizing our data
|
|
|
|
* get them early
|
|
|
|
*/
|
|
|
|
hang();
|
2007-07-05 16:01:48 +00:00
|
|
|
}
|
2002-11-03 00:01:44 +00:00
|
|
|
}
|
2007-10-07 12:27:24 +00:00
|
|
|
EXPORT_SYMBOL(console_putc);
|
2002-11-03 00:01:44 +00:00
|
|
|
|
2011-10-14 06:56:22 +00:00
|
|
|
int console_puts(unsigned int ch, const char *str)
|
2002-11-03 00:01:44 +00:00
|
|
|
{
|
2014-06-04 07:17:31 +00:00
|
|
|
struct console_device *cdev;
|
2007-07-12 07:31:07 +00:00
|
|
|
const char *s = str;
|
2011-10-14 06:56:22 +00:00
|
|
|
int n = 0;
|
|
|
|
|
2014-06-04 07:17:31 +00:00
|
|
|
if (initialized == CONSOLE_INIT_FULL) {
|
|
|
|
for_each_console(cdev) {
|
|
|
|
if (cdev->f_active & ch) {
|
|
|
|
n = cdev->puts(cdev, str);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return n;
|
|
|
|
}
|
|
|
|
|
2007-07-12 07:31:07 +00:00
|
|
|
while (*s) {
|
2011-10-14 06:56:22 +00:00
|
|
|
if (*s == '\n') {
|
2007-07-12 07:31:07 +00:00
|
|
|
console_putc(ch, '\r');
|
2011-10-14 06:56:22 +00:00
|
|
|
n++;
|
|
|
|
}
|
2009-08-04 12:22:45 +00:00
|
|
|
console_putc(ch, *s);
|
2011-10-14 06:56:22 +00:00
|
|
|
n++;
|
2007-07-12 07:31:07 +00:00
|
|
|
s++;
|
2007-07-05 16:01:48 +00:00
|
|
|
}
|
2011-10-14 06:56:22 +00:00
|
|
|
return n;
|
2007-07-05 16:01:48 +00:00
|
|
|
}
|
2007-10-07 12:27:24 +00:00
|
|
|
EXPORT_SYMBOL(console_puts);
|
2007-07-05 16:01:48 +00:00
|
|
|
|
2009-02-21 00:22:48 +00:00
|
|
|
void console_flush(void)
|
|
|
|
{
|
|
|
|
struct console_device *cdev;
|
|
|
|
|
|
|
|
for_each_console(cdev) {
|
|
|
|
if (cdev->flush)
|
|
|
|
cdev->flush(cdev);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(console_flush);
|
|
|
|
|
2008-03-10 23:00:37 +00:00
|
|
|
#ifndef ARCH_HAS_CTRLC
|
2002-11-03 00:01:44 +00:00
|
|
|
/* test if ctrl-c was pressed */
|
|
|
|
int ctrlc (void)
|
|
|
|
{
|
2010-12-18 10:25:34 +00:00
|
|
|
poller_call();
|
|
|
|
|
2007-07-05 16:01:50 +00:00
|
|
|
if (tstc() && getc() == 3)
|
|
|
|
return 1;
|
2002-11-03 00:01:44 +00:00
|
|
|
return 0;
|
|
|
|
}
|
2007-10-07 12:27:24 +00:00
|
|
|
EXPORT_SYMBOL(ctrlc);
|
2008-03-10 23:00:37 +00:00
|
|
|
#endif /* ARCH_HAS_CTRC */
|
2013-11-26 12:08:28 +00:00
|
|
|
|
|
|
|
BAREBOX_MAGICVAR_NAMED(global_linux_bootargs_console, global.linux.bootargs.console,
|
|
|
|
"console= argument for Linux from the linux,stdout-path property in /chosen node");
|