[people/ms/u-boot.git] / drivers / core / root.c

/*
 * Copyright (c) 2013 Google, Inc
 *
 * (C) Copyright 2012
 * Pavel Herrmann <morpheus.ibis@gmail.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <errno.h>
#include <fdtdec.h>
#include <malloc.h>
#include <libfdt.h>
#include <dm/device.h>
#include <dm/device-internal.h>
#include <dm/lists.h>
#include <dm/of.h>
#include <dm/of_access.h>
#include <dm/platdata.h>
#include <dm/read.h>
#include <dm/root.h>
#include <dm/uclass.h>
#include <dm/util.h>
#include <linux/list.h>

DECLARE_GLOBAL_DATA_PTR;

struct root_priv {
	fdt_addr_t translation_offset;	/* optional translation offset */
};

static const struct driver_info root_info = {
	.name		= "root_driver",
};

struct udevice *dm_root(void)
{
	if (!gd->dm_root) {
		dm_warn("Virtual root driver does not exist!\n");
		return NULL;
	}

	return gd->dm_root;
}

void dm_fixup_for_gd_move(struct global_data *new_gd)
{
	/* The sentinel node has moved, so update things that point to it */
	if (gd->dm_root) {
		new_gd->uclass_root.next->prev = &new_gd->uclass_root;
		new_gd->uclass_root.prev->next = &new_gd->uclass_root;
	}
}

fdt_addr_t dm_get_translation_offset(void)
{
	struct udevice *root = dm_root();
	struct root_priv *priv = dev_get_priv(root);

	return priv->translation_offset;
}

void dm_set_translation_offset(fdt_addr_t offs)
{
	struct udevice *root = dm_root();
	struct root_priv *priv = dev_get_priv(root);

	priv->translation_offset = offs;
}

#if defined(CONFIG_NEEDS_MANUAL_RELOC)
void fix_drivers(void)
{
	struct driver *drv =
		ll_entry_start(struct driver, driver);
	const int n_ents = ll_entry_count(struct driver, driver);
	struct driver *entry;

	for (entry = drv; entry != drv + n_ents; entry++) {
		if (entry->of_match)
			entry->of_match = (const struct udevice_id *)
				((u32)entry->of_match + gd->reloc_off);
		if (entry->bind)
			entry->bind += gd->reloc_off;
		if (entry->probe)
			entry->probe += gd->reloc_off;
		if (entry->remove)
			entry->remove += gd->reloc_off;
		if (entry->unbind)
			entry->unbind += gd->reloc_off;
		if (entry->ofdata_to_platdata)
			entry->ofdata_to_platdata += gd->reloc_off;
		if (entry->child_post_bind)
			entry->child_post_bind += gd->reloc_off;
		if (entry->child_pre_probe)
			entry->child_pre_probe += gd->reloc_off;
		if (entry->child_post_remove)
			entry->child_post_remove += gd->reloc_off;
		/* OPS are fixed in every uclass post_probe function */
		if (entry->ops)
			entry->ops += gd->reloc_off;
	}
}

void fix_uclass(void)
{
	struct uclass_driver *uclass =
		ll_entry_start(struct uclass_driver, uclass);
	const int n_ents = ll_entry_count(struct uclass_driver, uclass);
	struct uclass_driver *entry;

	for (entry = uclass; entry != uclass + n_ents; entry++) {
		if (entry->post_bind)
			entry->post_bind += gd->reloc_off;
		if (entry->pre_unbind)
			entry->pre_unbind += gd->reloc_off;
		if (entry->pre_probe)
			entry->pre_probe += gd->reloc_off;
		if (entry->post_probe)
			entry->post_probe += gd->reloc_off;
		if (entry->pre_remove)
			entry->pre_remove += gd->reloc_off;
		if (entry->child_post_bind)
			entry->child_post_bind += gd->reloc_off;
		if (entry->child_pre_probe)
			entry->child_pre_probe += gd->reloc_off;
		if (entry->init)
			entry->init += gd->reloc_off;
		if (entry->destroy)
			entry->destroy += gd->reloc_off;
		/* FIXME maybe also need to fix these ops */
		if (entry->ops)
			entry->ops += gd->reloc_off;
	}
}

void fix_devices(void)
{
	struct driver_info *dev =
		ll_entry_start(struct driver_info, driver_info);
	const int n_ents = ll_entry_count(struct driver_info, driver_info);
	struct driver_info *entry;

	for (entry = dev; entry != dev + n_ents; entry++) {
		if (entry->platdata)
			entry->platdata += gd->reloc_off;
	}
}

#endif

int dm_init(bool of_live)
{
	int ret;

	if (gd->dm_root) {
		dm_warn("Virtual root driver already exists!\n");
		return -EINVAL;
	}
	INIT_LIST_HEAD(&DM_UCLASS_ROOT_NON_CONST);

#if defined(CONFIG_NEEDS_MANUAL_RELOC)
	fix_drivers();
	fix_uclass();
	fix_devices();
#endif

	ret = device_bind_by_name(NULL, false, &root_info, &DM_ROOT_NON_CONST);
	if (ret)
		return ret;
#if CONFIG_IS_ENABLED(OF_CONTROL)
# if CONFIG_IS_ENABLED(OF_LIVE)
	if (of_live)
		DM_ROOT_NON_CONST->node = np_to_ofnode(gd->of_root);
	else
#endif
		DM_ROOT_NON_CONST->node = offset_to_ofnode(0);
#endif
	ret = device_probe(DM_ROOT_NON_CONST);
	if (ret)
		return ret;

	return 0;
}

int dm_uninit(void)
{
	device_remove(dm_root(), DM_REMOVE_NORMAL);
	device_unbind(dm_root());

	return 0;
}

#if CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)
int dm_remove_devices_flags(uint flags)
{
	device_remove(dm_root(), flags);

	return 0;
}
#endif

int dm_scan_platdata(bool pre_reloc_only)
{
	int ret;

	ret = lists_bind_drivers(DM_ROOT_NON_CONST, pre_reloc_only);
	if (ret == -ENOENT) {
		dm_warn("Some drivers were not found\n");
		ret = 0;
	}

	return ret;
}

#if CONFIG_IS_ENABLED(OF_LIVE)
static int dm_scan_fdt_live(struct udevice *parent,
			    const struct device_node *node_parent,
			    bool pre_reloc_only)
{
	struct device_node *np;
	int ret = 0, err;

	for (np = node_parent->child; np; np = np->sibling) {
		if (pre_reloc_only &&
		    !of_find_property(np, "u-boot,dm-pre-reloc", NULL))
			continue;
		if (!of_device_is_available(np)) {
			pr_debug("   - ignoring disabled device\n");
			continue;
		}
		err = lists_bind_fdt(parent, np_to_ofnode(np), NULL);
		if (err && !ret) {
			ret = err;
			debug("%s: ret=%d\n", np->name, ret);
		}
	}

	if (ret)
		dm_warn("Some drivers failed to bind\n");

	return ret;
}
#endif /* CONFIG_IS_ENABLED(OF_LIVE) */

#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
/**
 * dm_scan_fdt_node() - Scan the device tree and bind drivers for a node
 *
 * This scans the subnodes of a device tree node and and creates a driver
 * for each one.
 *
 * @parent: Parent device for the devices that will be created
 * @blob: Pointer to device tree blob
 * @offset: Offset of node to scan
 * @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
 * flag. If false bind all drivers.
 * @return 0 if OK, -ve on error
 */
static int dm_scan_fdt_node(struct udevice *parent, const void *blob,
			    int offset, bool pre_reloc_only)
{
	int ret = 0, err;

	for (offset = fdt_first_subnode(blob, offset);
	     offset > 0;
	     offset = fdt_next_subnode(blob, offset)) {
		if (pre_reloc_only &&
		    !dm_fdt_pre_reloc(blob, offset))
			continue;
		if (!fdtdec_get_is_enabled(blob, offset)) {
			pr_debug("   - ignoring disabled device\n");
			continue;
		}
		err = lists_bind_fdt(parent, offset_to_ofnode(offset), NULL);
		if (err && !ret) {
			ret = err;
			debug("%s: ret=%d\n", fdt_get_name(blob, offset, NULL),
			      ret);
		}
	}

	if (ret)
		dm_warn("Some drivers failed to bind\n");

	return ret;
}

int dm_scan_fdt_dev(struct udevice *dev)
{
	if (!dev_of_valid(dev))
		return 0;

#if CONFIG_IS_ENABLED(OF_LIVE)
	if (of_live_active())
		return dm_scan_fdt_live(dev, dev_np(dev),
				gd->flags & GD_FLG_RELOC ? false : true);
	else
#endif
	return dm_scan_fdt_node(dev, gd->fdt_blob, dev_of_offset(dev),
				gd->flags & GD_FLG_RELOC ? false : true);
}

int dm_scan_fdt(const void *blob, bool pre_reloc_only)
{
#if CONFIG_IS_ENABLED(OF_LIVE)
	if (of_live_active())
		return dm_scan_fdt_live(gd->dm_root, gd->of_root,
					pre_reloc_only);
	else
#endif
	return dm_scan_fdt_node(gd->dm_root, blob, 0, pre_reloc_only);
}
#else
static int dm_scan_fdt_node(struct udevice *parent, const void *blob,
			    int offset, bool pre_reloc_only)
{
	return 0;
}
#endif

int dm_extended_scan_fdt(const void *blob, bool pre_reloc_only)
{
	int node, ret;

	ret = dm_scan_fdt(gd->fdt_blob, pre_reloc_only);
	if (ret) {
		debug("dm_scan_fdt() failed: %d\n", ret);
		return ret;
	}

	/* bind fixed-clock */
	node = ofnode_to_offset(ofnode_path("/clocks"));
	/* if no DT "clocks" node, no need to go further */
	if (node < 0)
		return ret;

	ret = dm_scan_fdt_node(gd->dm_root, gd->fdt_blob, node,
			       pre_reloc_only);
	if (ret)
		debug("dm_scan_fdt_node() failed: %d\n", ret);

	return ret;
}

__weak int dm_scan_other(bool pre_reloc_only)
{
	return 0;
}

int dm_init_and_scan(bool pre_reloc_only)
{
	int ret;

	ret = dm_init(IS_ENABLED(CONFIG_OF_LIVE));
	if (ret) {
		debug("dm_init() failed: %d\n", ret);
		return ret;
	}
	ret = dm_scan_platdata(pre_reloc_only);
	if (ret) {
		debug("dm_scan_platdata() failed: %d\n", ret);
		return ret;
	}

	if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) {
		ret = dm_extended_scan_fdt(gd->fdt_blob, pre_reloc_only);
		if (ret) {
			debug("dm_extended_scan_dt() failed: %d\n", ret);
			return ret;
		}
	}

	ret = dm_scan_other(pre_reloc_only);
	if (ret)
		return ret;

	return 0;
}

/* This is the root driver - all drivers are children of this */
U_BOOT_DRIVER(root_driver) = {
	.name	= "root_driver",
	.id	= UCLASS_ROOT,
	.priv_auto_alloc_size = sizeof(struct root_priv),
};

/* This is the root uclass */
UCLASS_DRIVER(root) = {
	.name	= "root",
	.id	= UCLASS_ROOT,
};
Commit	Line	Data
6494d708 SG	1	/*
	2	* Copyright (c) 2013 Google, Inc
	3	*
	4	* (C) Copyright 2012
	5	* Pavel Herrmann <morpheus.ibis@gmail.com>
	6	*
	7	* SPDX-License-Identifier: GPL-2.0+
	8	*/
	9
	10	#include <common.h>
	11	#include <errno.h>
94f7afdf	12	#include <fdtdec.h>
6494d708	13	#include <malloc.h>
6a6d8fbe	14	#include <libfdt.h>
6494d708 SG	15	#include <dm/device.h>
	16	#include <dm/device-internal.h>
	17	#include <dm/lists.h>
19c8205e SG	18	#include <dm/of.h>
19c8205e SG	19	#include <dm/of_access.h>
6494d708	20	#include <dm/platdata.h>
19c8205e	21	#include <dm/read.h>
fd536d81	22	#include <dm/root.h>
6494d708 SG	23	#include <dm/uclass.h>
	24	#include <dm/util.h>
	25	#include <linux/list.h>
	26
	27	DECLARE_GLOBAL_DATA_PTR;
	28
66eaea6c SR	29	struct root_priv {
	30	fdt_addr_t translation_offset; /* optional translation offset */
	31	};
	32
6494d708 SG	33	static const struct driver_info root_info = {
	34	.name = "root_driver",
	35	};
	36
54c5d08a	37	struct udevice *dm_root(void)
6494d708 SG	38	{
	39	if (!gd->dm_root) {
	40	dm_warn("Virtual root driver does not exist!\n");
	41	return NULL;
	42	}
	43
	44	return gd->dm_root;
	45	}
	46
2f11cd91 SG	47	void dm_fixup_for_gd_move(struct global_data *new_gd)
	48	{
	49	/* The sentinel node has moved, so update things that point to it */
b0d9512a LV	50	if (gd->dm_root) {
	51	new_gd->uclass_root.next->prev = &new_gd->uclass_root;
	52	new_gd->uclass_root.prev->next = &new_gd->uclass_root;
	53	}
2f11cd91 SG	54	}
2f11cd91 SG	55
66eaea6c SR	56	fdt_addr_t dm_get_translation_offset(void)
	57	{
	58	struct udevice *root = dm_root();
	59	struct root_priv *priv = dev_get_priv(root);
	60
	61	return priv->translation_offset;
	62	}
	63
	64	void dm_set_translation_offset(fdt_addr_t offs)
	65	{
	66	struct udevice *root = dm_root();
	67	struct root_priv *priv = dev_get_priv(root);
	68
	69	priv->translation_offset = offs;
	70	}
	71
484fdf5b MS	72	#if defined(CONFIG_NEEDS_MANUAL_RELOC)
	73	void fix_drivers(void)
	74	{
	75	struct driver *drv =
	76	ll_entry_start(struct driver, driver);
	77	const int n_ents = ll_entry_count(struct driver, driver);
	78	struct driver *entry;
	79
	80	for (entry = drv; entry != drv + n_ents; entry++) {
	81	if (entry->of_match)
	82	entry->of_match = (const struct udevice_id *)
	83	((u32)entry->of_match + gd->reloc_off);
	84	if (entry->bind)
	85	entry->bind += gd->reloc_off;
	86	if (entry->probe)
	87	entry->probe += gd->reloc_off;
	88	if (entry->remove)
	89	entry->remove += gd->reloc_off;
	90	if (entry->unbind)
	91	entry->unbind += gd->reloc_off;
	92	if (entry->ofdata_to_platdata)
	93	entry->ofdata_to_platdata += gd->reloc_off;
31e1029a MS	94	if (entry->child_post_bind)
31e1029a MS	95	entry->child_post_bind += gd->reloc_off;
484fdf5b MS	96	if (entry->child_pre_probe)
	97	entry->child_pre_probe += gd->reloc_off;
	98	if (entry->child_post_remove)
	99	entry->child_post_remove += gd->reloc_off;
	100	/* OPS are fixed in every uclass post_probe function */
	101	if (entry->ops)
	102	entry->ops += gd->reloc_off;
	103	}
	104	}
	105
	106	void fix_uclass(void)
	107	{
	108	struct uclass_driver *uclass =
	109	ll_entry_start(struct uclass_driver, uclass);
	110	const int n_ents = ll_entry_count(struct uclass_driver, uclass);
	111	struct uclass_driver *entry;
	112
	113	for (entry = uclass; entry != uclass + n_ents; entry++) {
	114	if (entry->post_bind)
	115	entry->post_bind += gd->reloc_off;
	116	if (entry->pre_unbind)
	117	entry->pre_unbind += gd->reloc_off;
31e1029a MS	118	if (entry->pre_probe)
31e1029a MS	119	entry->pre_probe += gd->reloc_off;
484fdf5b MS	120	if (entry->post_probe)
	121	entry->post_probe += gd->reloc_off;
	122	if (entry->pre_remove)
	123	entry->pre_remove += gd->reloc_off;
31e1029a MS	124	if (entry->child_post_bind)
	125	entry->child_post_bind += gd->reloc_off;
	126	if (entry->child_pre_probe)
	127	entry->child_pre_probe += gd->reloc_off;
484fdf5b MS	128	if (entry->init)
	129	entry->init += gd->reloc_off;
	130	if (entry->destroy)
	131	entry->destroy += gd->reloc_off;
	132	/* FIXME maybe also need to fix these ops */
	133	if (entry->ops)
	134	entry->ops += gd->reloc_off;
	135	}
	136	}
5aeedebc AD	137
	138	void fix_devices(void)
	139	{
	140	struct driver_info *dev =
	141	ll_entry_start(struct driver_info, driver_info);
	142	const int n_ents = ll_entry_count(struct driver_info, driver_info);
	143	struct driver_info *entry;
	144
	145	for (entry = dev; entry != dev + n_ents; entry++) {
	146	if (entry->platdata)
	147	entry->platdata += gd->reloc_off;
	148	}
	149	}
	150
484fdf5b MS	151	#endif
484fdf5b MS	152
19c8205e	153	int dm_init(bool of_live)
6494d708 SG	154	{
	155	int ret;
	156
	157	if (gd->dm_root) {
	158	dm_warn("Virtual root driver already exists!\n");
	159	return -EINVAL;
	160	}
89876a55	161	INIT_LIST_HEAD(&DM_UCLASS_ROOT_NON_CONST);
6494d708	162
484fdf5b MS	163	#if defined(CONFIG_NEEDS_MANUAL_RELOC)
	164	fix_drivers();
	165	fix_uclass();
5aeedebc	166	fix_devices();
484fdf5b MS	167	#endif
484fdf5b MS	168
00606d7e	169	ret = device_bind_by_name(NULL, false, &root_info, &DM_ROOT_NON_CONST);
7497812d SG	170	if (ret)
7497812d SG	171	return ret;
0f925822	172	#if CONFIG_IS_ENABLED(OF_CONTROL)
19c8205e SG	173	# if CONFIG_IS_ENABLED(OF_LIVE)
	174	if (of_live)
	175	DM_ROOT_NON_CONST->node = np_to_ofnode(gd->of_root);
	176	else
	177	#endif
	178	DM_ROOT_NON_CONST->node = offset_to_ofnode(0);
2f3b95db	179	#endif
7497812d	180	ret = device_probe(DM_ROOT_NON_CONST);
6494d708 SG	181	if (ret)
	182	return ret;
	183
	184	return 0;
	185	}
	186
9adbd7a1 SG	187	int dm_uninit(void)
9adbd7a1 SG	188	{
706865af	189	device_remove(dm_root(), DM_REMOVE_NORMAL);
9adbd7a1 SG	190	device_unbind(dm_root());
	191
	192	return 0;
	193	}
	194
bc85aa40 SR	195	#if CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)
	196	int dm_remove_devices_flags(uint flags)
	197	{
	198	device_remove(dm_root(), flags);
	199
	200	return 0;
	201	}
	202	#endif
	203
00606d7e	204	int dm_scan_platdata(bool pre_reloc_only)
6494d708 SG	205	{
	206	int ret;
	207
00606d7e	208	ret = lists_bind_drivers(DM_ROOT_NON_CONST, pre_reloc_only);
6494d708 SG	209	if (ret == -ENOENT) {
	210	dm_warn("Some drivers were not found\n");
	211	ret = 0;
	212	}
6494d708	213
cbf86d71	214	return ret;
6494d708 SG	215	}
6494d708 SG	216
19c8205e SG	217	#if CONFIG_IS_ENABLED(OF_LIVE)
	218	static int dm_scan_fdt_live(struct udevice *parent,
	219	const struct device_node *node_parent,
	220	bool pre_reloc_only)
	221	{
	222	struct device_node *np;
	223	int ret = 0, err;
	224
	225	for (np = node_parent->child; np; np = np->sibling) {
	226	if (pre_reloc_only &&
	227	!of_find_property(np, "u-boot,dm-pre-reloc", NULL))
	228	continue;
	229	if (!of_device_is_available(np)) {
ceb91909	230	pr_debug(" - ignoring disabled device\n");
19c8205e SG	231	continue;
	232	}
	233	err = lists_bind_fdt(parent, np_to_ofnode(np), NULL);
	234	if (err && !ret) {
	235	ret = err;
	236	debug("%s: ret=%d\n", np->name, ret);
	237	}
	238	}
	239
	240	if (ret)
	241	dm_warn("Some drivers failed to bind\n");
	242
	243	return ret;
	244	}
	245	#endif /* CONFIG_IS_ENABLED(OF_LIVE) */
	246
29629eb8	247	#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
a771a04f SG	248	/**
	249	* dm_scan_fdt_node() - Scan the device tree and bind drivers for a node
	250	*
	251	* This scans the subnodes of a device tree node and and creates a driver
	252	* for each one.
	253	*
	254	* @parent: Parent device for the devices that will be created
	255	* @blob: Pointer to device tree blob
	256	* @offset: Offset of node to scan
	257	* @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
	258	* flag. If false bind all drivers.
	259	* @return 0 if OK, -ve on error
	260	*/
	261	static int dm_scan_fdt_node(struct udevice parent, const void blob,
	262	int offset, bool pre_reloc_only)
6494d708	263	{
6494d708	264	int ret = 0, err;
1ca7e206 SG	265
	266	for (offset = fdt_first_subnode(blob, offset);
	267	offset > 0;
	268	offset = fdt_next_subnode(blob, offset)) {
	269	if (pre_reloc_only &&
27326c7e	270	!dm_fdt_pre_reloc(blob, offset))
1ca7e206	271	continue;
94f7afdf	272	if (!fdtdec_get_is_enabled(blob, offset)) {
ceb91909	273	pr_debug(" - ignoring disabled device\n");
94f7afdf SG	274	continue;
94f7afdf SG	275	}
f5b5719c	276	err = lists_bind_fdt(parent, offset_to_ofnode(offset), NULL);
bc7b2f43	277	if (err && !ret) {
1ca7e206	278	ret = err;
bc7b2f43 SG	279	debug("%s: ret=%d\n", fdt_get_name(blob, offset, NULL),
	280	ret);
	281	}
1ca7e206	282	}
6494d708 SG	283
	284	if (ret)
	285	dm_warn("Some drivers failed to bind\n");
	286
	287	return ret;
	288	}
1ca7e206	289
cc7f66f7 SG	290	int dm_scan_fdt_dev(struct udevice *dev)
cc7f66f7 SG	291	{
19c8205e	292	if (!dev_of_valid(dev))
cc7f66f7 SG	293	return 0;
cc7f66f7 SG	294
19c8205e SG	295	#if CONFIG_IS_ENABLED(OF_LIVE)
	296	if (of_live_active())
	297	return dm_scan_fdt_live(dev, dev_np(dev),
	298	gd->flags & GD_FLG_RELOC ? false : true);
	299	else
	300	#endif
e160f7d4	301	return dm_scan_fdt_node(dev, gd->fdt_blob, dev_of_offset(dev),
cc7f66f7 SG	302	gd->flags & GD_FLG_RELOC ? false : true);
	303	}
	304
1ca7e206 SG	305	int dm_scan_fdt(const void *blob, bool pre_reloc_only)
1ca7e206 SG	306	{
19c8205e SG	307	#if CONFIG_IS_ENABLED(OF_LIVE)
	308	if (of_live_active())
	309	return dm_scan_fdt_live(gd->dm_root, gd->of_root,
	310	pre_reloc_only);
	311	else
	312	#endif
1ca7e206 SG	313	return dm_scan_fdt_node(gd->dm_root, blob, 0, pre_reloc_only);
1ca7e206 SG	314	}
e81c9864 PC	315	#else
	316	static int dm_scan_fdt_node(struct udevice parent, const void blob,
	317	int offset, bool pre_reloc_only)
	318	{
	319	return 0;
	320	}
6494d708 SG	321	#endif
6494d708 SG	322
e81c9864 PC	323	int dm_extended_scan_fdt(const void *blob, bool pre_reloc_only)
	324	{
	325	int node, ret;
	326
	327	ret = dm_scan_fdt(gd->fdt_blob, pre_reloc_only);
	328	if (ret) {
	329	debug("dm_scan_fdt() failed: %d\n", ret);
	330	return ret;
	331	}
	332
	333	/* bind fixed-clock */
	334	node = ofnode_to_offset(ofnode_path("/clocks"));
	335	/* if no DT "clocks" node, no need to go further */
	336	if (node < 0)
	337	return ret;
	338
	339	ret = dm_scan_fdt_node(gd->dm_root, gd->fdt_blob, node,
	340	pre_reloc_only);
	341	if (ret)
	342	debug("dm_scan_fdt_node() failed: %d\n", ret);
	343
	344	return ret;
	345	}
	346
bb58503d SG	347	__weak int dm_scan_other(bool pre_reloc_only)
	348	{
	349	return 0;
	350	}
	351
ab7cd627 SG	352	int dm_init_and_scan(bool pre_reloc_only)
	353	{
	354	int ret;
	355
19c8205e	356	ret = dm_init(IS_ENABLED(CONFIG_OF_LIVE));
ab7cd627 SG	357	if (ret) {
	358	debug("dm_init() failed: %d\n", ret);
	359	return ret;
	360	}
	361	ret = dm_scan_platdata(pre_reloc_only);
	362	if (ret) {
	363	debug("dm_scan_platdata() failed: %d\n", ret);
	364	return ret;
	365	}
b2b0d3e7	366
29629eb8	367	if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) {
e81c9864	368	ret = dm_extended_scan_fdt(gd->fdt_blob, pre_reloc_only);
b2b0d3e7	369	if (ret) {
e81c9864	370	debug("dm_extended_scan_dt() failed: %d\n", ret);
b2b0d3e7 SG	371	return ret;
b2b0d3e7 SG	372	}
ab7cd627	373	}
b2b0d3e7	374
bb58503d SG	375	ret = dm_scan_other(pre_reloc_only);
	376	if (ret)
	377	return ret;
ab7cd627 SG	378
	379	return 0;
	380	}
	381
6494d708 SG	382	/* This is the root driver - all drivers are children of this */
	383	U_BOOT_DRIVER(root_driver) = {
	384	.name = "root_driver",
	385	.id = UCLASS_ROOT,
66eaea6c	386	.priv_auto_alloc_size = sizeof(struct root_priv),
6494d708 SG	387	};
	388
	389	/* This is the root uclass */
	390	UCLASS_DRIVER(root) = {
	391	.name = "root",
	392	.id = UCLASS_ROOT,
	393	};