[people/ms/u-boot.git] / common / stdio.c

/*
 * 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 <dm.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

#include <dm/device-internal.h>

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

#if CONFIG_IS_ENABLED(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.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.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);
}

#ifdef CONFIG_DM_VIDEO
/**
 * stdio_probe_device() - Find a device which provides the given stdio device
 *
 * This looks for a device of the given uclass which provides a particular
 * stdio device. It is currently really only useful for UCLASS_VIDEO.
 *
 * Ultimately we want to be able to probe a device by its stdio name. At
 * present devices register in their probe function (for video devices this
 * is done in vidconsole_post_probe()) and we don't know what name they will
 * use until they do so.
 * TODO(sjg@chromium.org): We should be able to determine the name before
 * probing, and probe the required device.
 *
 * @name:	stdio device name (e.g. "vidconsole")
 * id:		Uclass ID of device to look for (e.g. UCLASS_VIDEO)
 * @sdevp:	Returns stdout device, if found, else NULL
 * @return 0 if found, -ENOENT if no device found with that name, other -ve
 *	   on other error
 */
static int stdio_probe_device(const char *name, enum uclass_id id,
			      struct stdio_dev **sdevp)
{
	struct stdio_dev *sdev;
	struct udevice *dev;
	int seq, ret;

	*sdevp = NULL;
	seq = trailing_strtoln(name, NULL);
	if (seq == -1)
		ret = uclass_first_device_err(id, &dev);
	else
		ret = uclass_get_device_by_seq(id, seq, &dev);
	if (ret) {
		debug("No %s device for seq %d (%s)\n", uclass_get_name(id),
		      seq, name);
		return ret;
	}
	/* The device should be be the last one registered */
	sdev = list_empty(&devs.list) ? NULL :
			list_last_entry(&devs.list, struct stdio_dev, list);
	if (!sdev || strcmp(sdev->name, name)) {
		debug("Device '%s' did not register with stdio as '%s'\n",
		      dev->name, name);
		return -ENOENT;
	}
	*sdevp = sdev;

	return 0;
}
#endif

struct stdio_dev* stdio_get_by_name(const char *name)
{
	struct list_head *pos;
	struct stdio_dev *sdev;

	if(!name)
		return NULL;

	list_for_each(pos, &(devs.list)) {
		sdev = list_entry(pos, struct stdio_dev, list);
		if (strcmp(sdev->name, name) == 0)
			return sdev;
	}
#ifdef CONFIG_DM_VIDEO
	/*
	 * We did not find a suitable stdio device. If there is a video
	 * driver with a name starting with 'vidconsole', we can try probing
	 * that in the hope that it will produce the required stdio device.
	 *
	 * This function is sometimes called with the entire value of
	 * 'stdout', which may include a list of devices separate by commas.
	 * Obviously this is not going to work, so we ignore that case. The
	 * call path in that case is console_init_r() -> search_device() ->
	 * stdio_get_by_name().
	 */
	if (!strncmp(name, "vidconsole", 10) && !strchr(name, ',') &&
	    !stdio_probe_device(name, UCLASS_VIDEO, &sdev))
		return sdev;
#endif

	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
 */
#if CONFIG_IS_ENABLED(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_IS_ENABLED(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_DM_KEYBOARD
	struct udevice *dev;
	struct uclass *uc;
	int ret;

	/*
	 * For now we probe all the devices here. At some point this should be
	 * done only when the devices are required - e.g. we have a list of
	 * input devices to start up in the stdin environment variable. That
	 * work probably makes more sense when stdio itself is converted to
	 * driver model.
	 *
	 * TODO(sjg@chromium.org): Convert changing uclass_first_device() etc.
	 * to return the device even on error. Then we could use that here.
	 */
	ret = uclass_get(UCLASS_KEYBOARD, &uc);
	if (ret)
		return ret;

	/* Don't report errors to the caller - assume that they are non-fatal */
	uclass_foreach_dev(dev, uc) {
		ret = device_probe(dev);
		if (ret)
			printf("Failed to probe keyboard '%s'\n", dev->name);
	}
#endif
#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_DM_VIDEO
	/*
	 * If the console setting is not in environment variables then
	 * console_init_r() will not be calling iomux_doenv() (which calls
	 * search_device()). So we will not dynamically add devices by
	 * calling stdio_probe_device().
	 *
	 * So just probe all video devices now so that whichever one is
	 * required will be available.
	 */
#ifndef CONFIG_SYS_CONSOLE_IS_IN_ENV
	struct udevice *vdev;
# ifndef CONFIG_DM_KEYBOARD
	int ret;
# endif

	for (ret = uclass_first_device(UCLASS_VIDEO, &vdev);
	     vdev;
	     ret = uclass_next_device(&vdev))
		;
	if (ret)
		printf("%s: Video device failed (ret=%d)\n", __func__, ret);
#endif /* !CONFIG_SYS_CONSOLE_IS_IN_ENV */
#else
# if defined(CONFIG_LCD)
	drv_lcd_init ();
# endif
# if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
	drv_video_init ();
# endif
#endif /* CONFIG_DM_VIDEO */
#if defined(CONFIG_KEYBOARD) && !defined(CONFIG_DM_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;
}
Commit	Line	Data
91d3256c	1	/*
3f4978c7 HS	2	* Copyright (C) 2009 Sergey Kubushyn <ksi@koi8.net>
	3	*
	4	* Changes for multibus/multiadapter I2C support.
	5	*
91d3256c WD	6	* (C) Copyright 2000
	7	* Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
	8	*
1a459660	9	* SPDX-License-Identifier: GPL-2.0+
91d3256c WD	10	*/
	11
	12	#include <config.h>
	13	#include <common.h>
b206cd73	14	#include <dm.h>
d97143a6	15	#include <errno.h>
91d3256c WD	16	#include <stdarg.h>
91d3256c WD	17	#include <malloc.h>
52cb4d4f	18	#include <stdio_dev.h>
281e00a3	19	#include <serial.h>
7f6c2cbc WD	20	#ifdef CONFIG_LOGBUFFER
	21	#include <logbuff.h>
	22	#endif
ea818dbb HS	23
ea818dbb HS	24	#if defined(CONFIG_HARD_I2C) \|\| defined(CONFIG_SYS_I2C)
91d3256c	25	#include <i2c.h>
7f6c2cbc	26	#endif
91d3256c	27
b206cd73 SG	28	#include <dm/device-internal.h>
b206cd73 SG	29
d87080b7 WD	30	DECLARE_GLOBAL_DATA_PTR;
d87080b7 WD	31
52cb4d4f JCPV	32	static struct stdio_dev devs;
52cb4d4f JCPV	33	struct stdio_dev *stdio_devices[] = { NULL, NULL, NULL };
91d3256c WD	34	char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" };
91d3256c WD	35
6d0f6bcf JCPV	36	#if defined(CONFIG_SPLASH_SCREEN) && !defined(CONFIG_SYS_DEVICE_NULLDEV)
6d0f6bcf JCPV	37	#define CONFIG_SYS_DEVICE_NULLDEV 1
d791b1dc WD	38	#endif
d791b1dc WD	39
869588de	40	#if CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER)
32d01926 HG	41	#define CONFIG_SYS_DEVICE_NULLDEV 1
32d01926 HG	42	#endif
d791b1dc	43
6d0f6bcf	44	#ifdef CONFIG_SYS_DEVICE_NULLDEV
654f8d0f	45	static void nulldev_putc(struct stdio_dev *dev, const char c)
91d3256c	46	{
c1de7a6d	47	/* nulldev is empty! */
91d3256c WD	48	}
91d3256c WD	49
654f8d0f	50	static void nulldev_puts(struct stdio_dev dev, const char s)
91d3256c	51	{
c1de7a6d	52	/* nulldev is empty! */
91d3256c WD	53	}
91d3256c WD	54
654f8d0f	55	static int nulldev_input(struct stdio_dev *dev)
91d3256c	56	{
c1de7a6d JCPV	57	/* nulldev is empty! */
c1de7a6d JCPV	58	return 0;
91d3256c WD	59	}
	60	#endif
	61
654f8d0f	62	static void stdio_serial_putc(struct stdio_dev *dev, const char c)
709ea543 SG	63	{
	64	serial_putc(c);
	65	}
	66
654f8d0f	67	static void stdio_serial_puts(struct stdio_dev dev, const char s)
709ea543 SG	68	{
	69	serial_puts(s);
	70	}
	71
654f8d0f	72	static int stdio_serial_getc(struct stdio_dev *dev)
709ea543 SG	73	{
	74	return serial_getc();
	75	}
	76
654f8d0f	77	static int stdio_serial_tstc(struct stdio_dev *dev)
709ea543 SG	78	{
	79	return serial_tstc();
	80	}
	81
91d3256c WD	82	/**************************************************************************
	83	* SYSTEM DRIVERS
	84	**************************************************************************
	85	*/
	86
	87	static void drv_system_init (void)
	88	{
52cb4d4f	89	struct stdio_dev dev;
91d3256c WD	90
	91	memset (&dev, 0, sizeof (dev));
	92
	93	strcpy (dev.name, "serial");
1caf934a	94	dev.flags = DEV_FLAGS_OUTPUT \| DEV_FLAGS_INPUT;
709ea543 SG	95	dev.putc = stdio_serial_putc;
	96	dev.puts = stdio_serial_puts;
	97	dev.getc = stdio_serial_getc;
	98	dev.tstc = stdio_serial_tstc;
52cb4d4f	99	stdio_register (&dev);
91d3256c	100
6d0f6bcf	101	#ifdef CONFIG_SYS_DEVICE_NULLDEV
91d3256c WD	102	memset (&dev, 0, sizeof (dev));
	103
	104	strcpy (dev.name, "nulldev");
1caf934a	105	dev.flags = DEV_FLAGS_OUTPUT \| DEV_FLAGS_INPUT;
91d3256c WD	106	dev.putc = nulldev_putc;
	107	dev.puts = nulldev_puts;
	108	dev.getc = nulldev_input;
	109	dev.tstc = nulldev_input;
	110
52cb4d4f	111	stdio_register (&dev);
91d3256c WD	112	#endif
	113	}
	114
	115	/**************************************************************************
	116	* DEVICES
	117	**************************************************************************
	118	*/
52cb4d4f	119	struct list_head* stdio_get_list(void)
c1de7a6d JCPV	120	{
	121	return &(devs.list);
	122	}
	123
d8441ea2 SG	124	#ifdef CONFIG_DM_VIDEO
	125	/**
	126	* stdio_probe_device() - Find a device which provides the given stdio device
	127	*
	128	* This looks for a device of the given uclass which provides a particular
	129	* stdio device. It is currently really only useful for UCLASS_VIDEO.
	130	*
	131	* Ultimately we want to be able to probe a device by its stdio name. At
	132	* present devices register in their probe function (for video devices this
	133	* is done in vidconsole_post_probe()) and we don't know what name they will
	134	* use until they do so.
	135	* TODO(sjg@chromium.org): We should be able to determine the name before
	136	* probing, and probe the required device.
	137	*
	138	* @name: stdio device name (e.g. "vidconsole")
	139	* id: Uclass ID of device to look for (e.g. UCLASS_VIDEO)
	140	* @sdevp: Returns stdout device, if found, else NULL
	141	* @return 0 if found, -ENOENT if no device found with that name, other -ve
	142	* on other error
	143	*/
	144	static int stdio_probe_device(const char *name, enum uclass_id id,
	145	struct stdio_dev **sdevp)
	146	{
	147	struct stdio_dev *sdev;
	148	struct udevice *dev;
	149	int seq, ret;
	150
	151	*sdevp = NULL;
	152	seq = trailing_strtoln(name, NULL);
	153	if (seq == -1)
	154	ret = uclass_first_device_err(id, &dev);
	155	else
	156	ret = uclass_get_device_by_seq(id, seq, &dev);
	157	if (ret) {
	158	debug("No %s device for seq %d (%s)\n", uclass_get_name(id),
	159	seq, name);
	160	return ret;
	161	}
	162	/* The device should be be the last one registered */
	163	sdev = list_empty(&devs.list) ? NULL :
	164	list_last_entry(&devs.list, struct stdio_dev, list);
	165	if (!sdev \|\| strcmp(sdev->name, name)) {
	166	debug("Device '%s' did not register with stdio as '%s'\n",
	167	dev->name, name);
	168	return -ENOENT;
	169	}
	170	*sdevp = sdev;
	171
	172	return 0;
	173	}
	174	#endif
	175
d7be3056	176	struct stdio_dev* stdio_get_by_name(const char *name)
c1de7a6d JCPV	177	{
c1de7a6d JCPV	178	struct list_head *pos;
d8441ea2	179	struct stdio_dev *sdev;
c1de7a6d JCPV	180
	181	if(!name)
	182	return NULL;
	183
	184	list_for_each(pos, &(devs.list)) {
d8441ea2 SG	185	sdev = list_entry(pos, struct stdio_dev, list);
	186	if (strcmp(sdev->name, name) == 0)
	187	return sdev;
c1de7a6d	188	}
d8441ea2 SG	189	#ifdef CONFIG_DM_VIDEO
	190	/*
	191	* We did not find a suitable stdio device. If there is a video
	192	* driver with a name starting with 'vidconsole', we can try probing
	193	* that in the hope that it will produce the required stdio device.
	194	*
	195	* This function is sometimes called with the entire value of
	196	* 'stdout', which may include a list of devices separate by commas.
	197	* Obviously this is not going to work, so we ignore that case. The
	198	* call path in that case is console_init_r() -> search_device() ->
	199	* stdio_get_by_name().
	200	*/
	201	if (!strncmp(name, "vidconsole", 10) && !strchr(name, ',') &&
	202	!stdio_probe_device(name, UCLASS_VIDEO, &sdev))
	203	return sdev;
	204	#endif
c1de7a6d JCPV	205
	206	return NULL;
	207	}
	208
52cb4d4f	209	struct stdio_dev* stdio_clone(struct stdio_dev *dev)
628ffd73	210	{
52cb4d4f	211	struct stdio_dev *_dev;
628ffd73 JCPV	212
	213	if(!dev)
	214	return NULL;
	215
52cb4d4f	216	_dev = calloc(1, sizeof(struct stdio_dev));
628ffd73 JCPV	217
	218	if(!_dev)
	219	return NULL;
	220
52cb4d4f	221	memcpy(_dev, dev, sizeof(struct stdio_dev));
628ffd73 JCPV	222
	223	return _dev;
	224	}
91d3256c	225
d97143a6	226	int stdio_register_dev(struct stdio_dev dev, struct stdio_dev *devp)
91d3256c	227	{
52cb4d4f	228	struct stdio_dev *_dev;
628ffd73	229
52cb4d4f	230	_dev = stdio_clone(dev);
628ffd73	231	if(!_dev)
d97143a6	232	return -ENODEV;
3e3c026e	233	list_add_tail(&(_dev->list), &(devs.list));
d97143a6 SG	234	if (devp)
	235	*devp = _dev;
	236
91d3256c WD	237	return 0;
	238	}
	239
d97143a6 SG	240	int stdio_register(struct stdio_dev *dev)
	241	{
	242	return stdio_register_dev(dev, NULL);
	243	}
	244
91d3256c WD	245	/* deregister the device "devname".
	246	* returns 0 if success, -1 if device is assigned and 1 if devname not found
	247	*/
869588de	248	#if CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER)
32d01926	249	int stdio_deregister_dev(struct stdio_dev *dev, int force)
91d3256c	250	{
c1de7a6d JCPV	251	int l;
c1de7a6d JCPV	252	struct list_head *pos;
03bf22f5	253	char temp_names[3][16];
91d3256c	254
91d3256c WD	255	/* get stdio devices (ListRemoveItem changes the dev list) */
	256	for (l=0 ; l< MAX_FILES; l++) {
	257	if (stdio_devices[l] == dev) {
32d01926 HG	258	if (force) {
	259	strcpy(temp_names[l], "nulldev");
	260	continue;
	261	}
91d3256c WD	262	/* Device is assigned -> report error */
	263	return -1;
	264	}
	265	memcpy (&temp_names[l][0],
	266	stdio_devices[l]->name,
03bf22f5	267	sizeof(temp_names[l]));
91d3256c	268	}
c1de7a6d JCPV	269
c1de7a6d JCPV	270	list_del(&(dev->list));
88274b6c	271	free(dev);
c1de7a6d	272
91d3256c	273	/* reassign Device list */
c1de7a6d	274	list_for_each(pos, &(devs.list)) {
52cb4d4f	275	dev = list_entry(pos, struct stdio_dev, list);
91d3256c	276	for (l=0 ; l< MAX_FILES; l++) {
c1de7a6d	277	if(strcmp(dev->name, temp_names[l]) == 0)
91d3256c	278	stdio_devices[l] = dev;
91d3256c WD	279	}
	280	}
	281	return 0;
	282	}
d97143a6	283
32d01926	284	int stdio_deregister(const char *devname, int force)
d97143a6 SG	285	{
	286	struct stdio_dev *dev;
	287
	288	dev = stdio_get_by_name(devname);
	289
	290	if (!dev) /* device not found */
	291	return -ENODEV;
	292
32d01926	293	return stdio_deregister_dev(dev, force);
d97143a6	294	}
869588de	295	#endif /* CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER) */
91d3256c	296
9fb02491	297	int stdio_init_tables(void)
91d3256c	298	{
2e5167cc	299	#if defined(CONFIG_NEEDS_MANUAL_RELOC)
521af04d	300	/* already relocated for current ARM implementation */
91d3256c	301	ulong relocation_offset = gd->reloc_off;
3595ac49	302	int i;
91d3256c WD	303
	304	/* relocate device name pointers */
	305	for (i = 0; i < (sizeof (stdio_names) / sizeof (char *)); ++i) {
	306	stdio_names[i] = (char *) (((ulong) stdio_names[i]) +
	307	relocation_offset);
	308	}
2e5167cc	309	#endif /* CONFIG_NEEDS_MANUAL_RELOC */
91d3256c WD	310
91d3256c WD	311	/* Initialize the list */
c1de7a6d	312	INIT_LIST_HEAD(&(devs.list));
91d3256c	313
9fb02491 SG	314	return 0;
	315	}
	316
	317	int stdio_add_devices(void)
	318	{
b206cd73 SG	319	#ifdef CONFIG_DM_KEYBOARD
	320	struct udevice *dev;
	321	struct uclass *uc;
	322	int ret;
	323
	324	/*
	325	* For now we probe all the devices here. At some point this should be
	326	* done only when the devices are required - e.g. we have a list of
	327	* input devices to start up in the stdin environment variable. That
	328	* work probably makes more sense when stdio itself is converted to
	329	* driver model.
	330	*
	331	* TODO(sjg@chromium.org): Convert changing uclass_first_device() etc.
	332	* to return the device even on error. Then we could use that here.
	333	*/
	334	ret = uclass_get(UCLASS_KEYBOARD, &uc);
	335	if (ret)
	336	return ret;
	337
	338	/* Don't report errors to the caller - assume that they are non-fatal */
	339	uclass_foreach_dev(dev, uc) {
	340	ret = device_probe(dev);
	341	if (ret)
	342	printf("Failed to probe keyboard '%s'\n", dev->name);
	343	}
	344	#endif
3f4978c7	345	#ifdef CONFIG_SYS_I2C
3f4978c7	346	i2c_init_all();
3f4978c7	347	#else
ea818dbb	348	#if defined(CONFIG_HARD_I2C)
6d0f6bcf	349	i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
91d3256c	350	#endif
3f4978c7	351	#endif
e3b81c1c	352	#ifdef CONFIG_DM_VIDEO
d8441ea2 SG	353	/*
	354	* If the console setting is not in environment variables then
	355	* console_init_r() will not be calling iomux_doenv() (which calls
	356	* search_device()). So we will not dynamically add devices by
	357	* calling stdio_probe_device().
	358	*
	359	* So just probe all video devices now so that whichever one is
	360	* required will be available.
	361	*/
	362	#ifndef CONFIG_SYS_CONSOLE_IS_IN_ENV
e3b81c1c	363	struct udevice *vdev;
35a1f0df SG	364	# ifndef CONFIG_DM_KEYBOARD
	365	int ret;
	366	# endif
e3b81c1c SG	367
	368	for (ret = uclass_first_device(UCLASS_VIDEO, &vdev);
	369	vdev;
	370	ret = uclass_next_device(&vdev))
	371	;
	372	if (ret)
	373	printf("%s: Video device failed (ret=%d)\n", __func__, ret);
d8441ea2	374	#endif /* !CONFIG_SYS_CONSOLE_IS_IN_ENV */
e3b81c1c SG	375	#else
e3b81c1c SG	376	# if defined(CONFIG_LCD)
91d3256c	377	drv_lcd_init ();
e3b81c1c SG	378	# endif
e3b81c1c SG	379	# if defined(CONFIG_VIDEO) \|\| defined(CONFIG_CFB_CONSOLE)
91d3256c	380	drv_video_init ();
e3b81c1c SG	381	# endif
e3b81c1c SG	382	#endif /* CONFIG_DM_VIDEO */
b206cd73	383	#if defined(CONFIG_KEYBOARD) && !defined(CONFIG_DM_KEYBOARD)
682011ff	384	drv_keyboard_init ();
56f94be3 WD	385	#endif
	386	#ifdef CONFIG_LOGBUFFER
	387	drv_logbuff_init ();
91d3256c WD	388	#endif
91d3256c WD	389	drv_system_init ();
52cb4d4f	390	serial_stdio_init ();
232c150a WD	391	#ifdef CONFIG_USB_TTY
	392	drv_usbtty_init ();
	393	#endif
68ceb29e WD	394	#ifdef CONFIG_NETCONSOLE
	395	drv_nc_init ();
	396	#endif
36ea8e9a MF	397	#ifdef CONFIG_JTAG_CONSOLE
	398	drv_jtag_console_init ();
	399	#endif
98ab435f VB	400	#ifdef CONFIG_CBMEM_CONSOLE
	401	cbmemc_init();
	402	#endif
9fb02491 SG	403
	404	return 0;
	405	}
	406
	407	int stdio_init(void)
	408	{
	409	stdio_init_tables();
	410	stdio_add_devices();
	411
	412	return 0;
91d3256c	413	}