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/*
* Copyright (C) 2009 Sergey Kubushyn <ksi@koi8.net>
*
* Changes for multibus/multiadapter I2C support.
*
* (C) Copyright 2000
* Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <config.h>
#include <common.h>
#include <errno.h>
#include <stdarg.h>
#include <malloc.h>
#include <stdio_dev.h>
#include <serial.h>
#ifdef CONFIG_LOGBUFFER
#include <logbuff.h>
#endif
#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
#include <i2c.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
static struct stdio_dev devs;
struct stdio_dev *stdio_devices[] = { NULL, NULL, NULL };
char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" };
#if defined(CONFIG_SPLASH_SCREEN) && !defined(CONFIG_SYS_DEVICE_NULLDEV)
#define CONFIG_SYS_DEVICE_NULLDEV 1
#endif
#ifdef CONFIG_SYS_STDIO_DEREGISTER
#define CONFIG_SYS_DEVICE_NULLDEV 1
#endif
#ifdef CONFIG_SYS_DEVICE_NULLDEV
static void nulldev_putc(struct stdio_dev *dev, const char c)
{
/* nulldev is empty! */
}
static void nulldev_puts(struct stdio_dev *dev, const char *s)
{
/* nulldev is empty! */
}
static int nulldev_input(struct stdio_dev *dev)
{
/* nulldev is empty! */
return 0;
}
#endif
static void stdio_serial_putc(struct stdio_dev *dev, const char c)
{
serial_putc(c);
}
static void stdio_serial_puts(struct stdio_dev *dev, const char *s)
{
serial_puts(s);
}
static int stdio_serial_getc(struct stdio_dev *dev)
{
return serial_getc();
}
static int stdio_serial_tstc(struct stdio_dev *dev)
{
return serial_tstc();
}
/**************************************************************************
* SYSTEM DRIVERS
**************************************************************************
*/
static void drv_system_init (void)
{
struct stdio_dev dev;
memset (&dev, 0, sizeof (dev));
strcpy (dev.name, "serial");
dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
dev.putc = stdio_serial_putc;
dev.puts = stdio_serial_puts;
dev.getc = stdio_serial_getc;
dev.tstc = stdio_serial_tstc;
stdio_register (&dev);
#ifdef CONFIG_SYS_DEVICE_NULLDEV
memset (&dev, 0, sizeof (dev));
strcpy (dev.name, "nulldev");
dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
dev.putc = nulldev_putc;
dev.puts = nulldev_puts;
dev.getc = nulldev_input;
dev.tstc = nulldev_input;
stdio_register (&dev);
#endif
}
/**************************************************************************
* DEVICES
**************************************************************************
*/
struct list_head* stdio_get_list(void)
{
return &(devs.list);
}
struct stdio_dev* stdio_get_by_name(const char *name)
{
struct list_head *pos;
struct stdio_dev *dev;
if(!name)
return NULL;
list_for_each(pos, &(devs.list)) {
dev = list_entry(pos, struct stdio_dev, list);
if(strcmp(dev->name, name) == 0)
return dev;
}
return NULL;
}
struct stdio_dev* stdio_clone(struct stdio_dev *dev)
{
struct stdio_dev *_dev;
if(!dev)
return NULL;
_dev = calloc(1, sizeof(struct stdio_dev));
if(!_dev)
return NULL;
memcpy(_dev, dev, sizeof(struct stdio_dev));
return _dev;
}
int stdio_register_dev(struct stdio_dev *dev, struct stdio_dev **devp)
{
struct stdio_dev *_dev;
_dev = stdio_clone(dev);
if(!_dev)
return -ENODEV;
list_add_tail(&(_dev->list), &(devs.list));
if (devp)
*devp = _dev;
return 0;
}
int stdio_register(struct stdio_dev *dev)
{
return stdio_register_dev(dev, NULL);
}
/* deregister the device "devname".
* returns 0 if success, -1 if device is assigned and 1 if devname not found
*/
#ifdef CONFIG_SYS_STDIO_DEREGISTER
int stdio_deregister_dev(struct stdio_dev *dev, int force)
{
int l;
struct list_head *pos;
char temp_names[3][16];
/* get stdio devices (ListRemoveItem changes the dev list) */
for (l=0 ; l< MAX_FILES; l++) {
if (stdio_devices[l] == dev) {
if (force) {
strcpy(temp_names[l], "nulldev");
continue;
}
/* Device is assigned -> report error */
return -1;
}
memcpy (&temp_names[l][0],
stdio_devices[l]->name,
sizeof(temp_names[l]));
}
list_del(&(dev->list));
free(dev);
/* reassign Device list */
list_for_each(pos, &(devs.list)) {
dev = list_entry(pos, struct stdio_dev, list);
for (l=0 ; l< MAX_FILES; l++) {
if(strcmp(dev->name, temp_names[l]) == 0)
stdio_devices[l] = dev;
}
}
return 0;
}
int stdio_deregister(const char *devname, int force)
{
struct stdio_dev *dev;
dev = stdio_get_by_name(devname);
if (!dev) /* device not found */
return -ENODEV;
return stdio_deregister_dev(dev, force);
}
#endif /* CONFIG_SYS_STDIO_DEREGISTER */
int stdio_init_tables(void)
{
#if defined(CONFIG_NEEDS_MANUAL_RELOC)
/* already relocated for current ARM implementation */
ulong relocation_offset = gd->reloc_off;
int i;
/* relocate device name pointers */
for (i = 0; i < (sizeof (stdio_names) / sizeof (char *)); ++i) {
stdio_names[i] = (char *) (((ulong) stdio_names[i]) +
relocation_offset);
}
#endif /* CONFIG_NEEDS_MANUAL_RELOC */
/* Initialize the list */
INIT_LIST_HEAD(&(devs.list));
return 0;
}
int stdio_add_devices(void)
{
#ifdef CONFIG_SYS_I2C
i2c_init_all();
#else
#if defined(CONFIG_HARD_I2C)
i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
#endif
#endif
#ifdef CONFIG_LCD
drv_lcd_init ();
#endif
#if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
drv_video_init ();
#endif
#ifdef CONFIG_KEYBOARD
drv_keyboard_init ();
#endif
#ifdef CONFIG_LOGBUFFER
drv_logbuff_init ();
#endif
drv_system_init ();
serial_stdio_init ();
#ifdef CONFIG_USB_TTY
drv_usbtty_init ();
#endif
#ifdef CONFIG_NETCONSOLE
drv_nc_init ();
#endif
#ifdef CONFIG_JTAG_CONSOLE
drv_jtag_console_init ();
#endif
#ifdef CONFIG_CBMEM_CONSOLE
cbmemc_init();
#endif
return 0;
}
int stdio_init(void)
{
stdio_init_tables();
stdio_add_devices();
return 0;
}
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