1 files changed, 1054 insertions, 0 deletions

diff --git a/roms/u-boot/drivers/core/ofnode.c b/roms/u-boot/drivers/core/ofnode.c
new file mode 100644
index 000000000..6c771e364
--- /dev/null
+++ b/roms/u-boot/drivers/core/ofnode.c
@@ -0,0 +1,1054 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2017 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <fdtdec.h>
+#include <fdt_support.h>
+#include <log.h>
+#include <malloc.h>
+#include <linux/libfdt.h>
+#include <dm/of_access.h>
+#include <dm/of_addr.h>
+#include <dm/ofnode.h>
+#include <linux/err.h>
+#include <linux/ioport.h>
+#include <asm/global_data.h>
+
+int ofnode_read_u32(ofnode node, const char *propname, u32 *outp)
+{
+	return ofnode_read_u32_index(node, propname, 0, outp);
+}
+
+u32 ofnode_read_u32_default(ofnode node, const char *propname, u32 def)
+{
+	assert(ofnode_valid(node));
+	ofnode_read_u32_index(node, propname, 0, &def);
+
+	return def;
+}
+
+int ofnode_read_u32_index(ofnode node, const char *propname, int index,
+			  u32 *outp)
+{
+	const fdt32_t *cell;
+	int len;
+
+	assert(ofnode_valid(node));
+	debug("%s: %s: ", __func__, propname);
+
+	if (ofnode_is_np(node))
+		return of_read_u32_index(ofnode_to_np(node), propname, index,
+					 outp);
+
+	cell = fdt_getprop(gd->fdt_blob, ofnode_to_offset(node), propname,
+			   &len);
+	if (!cell) {
+		debug("(not found)\n");
+		return -EINVAL;
+	}
+
+	if (len < (sizeof(int) * (index + 1))) {
+		debug("(not large enough)\n");
+		return -EOVERFLOW;
+	}
+
+	*outp = fdt32_to_cpu(cell[index]);
+	debug("%#x (%d)\n", *outp, *outp);
+
+	return 0;
+}
+
+u32 ofnode_read_u32_index_default(ofnode node, const char *propname, int index,
+				  u32 def)
+{
+	assert(ofnode_valid(node));
+	ofnode_read_u32_index(node, propname, index, &def);
+
+	return def;
+}
+
+int ofnode_read_s32_default(ofnode node, const char *propname, s32 def)
+{
+	assert(ofnode_valid(node));
+	ofnode_read_u32(node, propname, (u32 *)&def);
+
+	return def;
+}
+
+int ofnode_read_u64(ofnode node, const char *propname, u64 *outp)
+{
+	const unaligned_fdt64_t *cell;
+	int len;
+
+	assert(ofnode_valid(node));
+	debug("%s: %s: ", __func__, propname);
+
+	if (ofnode_is_np(node))
+		return of_read_u64(ofnode_to_np(node), propname, outp);
+
+	cell = fdt_getprop(gd->fdt_blob, ofnode_to_offset(node), propname,
+			   &len);
+	if (!cell || len < sizeof(*cell)) {
+		debug("(not found)\n");
+		return -EINVAL;
+	}
+	*outp = fdt64_to_cpu(cell[0]);
+	debug("%#llx (%lld)\n", (unsigned long long)*outp,
+	      (unsigned long long)*outp);
+
+	return 0;
+}
+
+u64 ofnode_read_u64_default(ofnode node, const char *propname, u64 def)
+{
+	assert(ofnode_valid(node));
+	ofnode_read_u64(node, propname, &def);
+
+	return def;
+}
+
+bool ofnode_read_bool(ofnode node, const char *propname)
+{
+	const void *prop;
+
+	assert(ofnode_valid(node));
+	debug("%s: %s: ", __func__, propname);
+
+	prop = ofnode_get_property(node, propname, NULL);
+
+	debug("%s\n", prop ? "true" : "false");
+
+	return prop ? true : false;
+}
+
+const void *ofnode_read_prop(ofnode node, const char *propname, int *sizep)
+{
+	const char *val = NULL;
+	int len;
+
+	assert(ofnode_valid(node));
+	debug("%s: %s: ", __func__, propname);
+
+	if (ofnode_is_np(node)) {
+		struct property *prop = of_find_property(
+				ofnode_to_np(node), propname, &len);
+
+		if (prop) {
+			val = prop->value;
+			len = prop->length;
+		}
+	} else {
+		val = fdt_getprop(gd->fdt_blob, ofnode_to_offset(node),
+				  propname, &len);
+	}
+	if (!val) {
+		debug("<not found>\n");
+		if (sizep)
+			*sizep = -FDT_ERR_NOTFOUND;
+		return NULL;
+	}
+	if (sizep)
+		*sizep = len;
+
+	return val;
+}
+
+const char *ofnode_read_string(ofnode node, const char *propname)
+{
+	const char *str;
+	int len;
+
+	str = ofnode_read_prop(node, propname, &len);
+	if (!str)
+		return NULL;
+
+	if (strnlen(str, len) >= len) {
+		debug("<invalid>\n");
+		return NULL;
+	}
+	debug("%s\n", str);
+
+	return str;
+}
+
+int ofnode_read_size(ofnode node, const char *propname)
+{
+	int len;
+
+	if (!ofnode_read_prop(node, propname, &len))
+		return -EINVAL;
+
+	return len;
+}
+
+ofnode ofnode_find_subnode(ofnode node, const char *subnode_name)
+{
+	ofnode subnode;
+
+	assert(ofnode_valid(node));
+	debug("%s: %s: ", __func__, subnode_name);
+
+	if (ofnode_is_np(node)) {
+		const struct device_node *np = ofnode_to_np(node);
+
+		for (np = np->child; np; np = np->sibling) {
+			if (!strcmp(subnode_name, np->name))
+				break;
+		}
+		subnode = np_to_ofnode(np);
+	} else {
+		int ooffset = fdt_subnode_offset(gd->fdt_blob,
+				ofnode_to_offset(node), subnode_name);
+		subnode = offset_to_ofnode(ooffset);
+	}
+	debug("%s\n", ofnode_valid(subnode) ?
+	      ofnode_get_name(subnode) : "<none>");
+
+	return subnode;
+}
+
+int ofnode_read_u32_array(ofnode node, const char *propname,
+			  u32 *out_values, size_t sz)
+{
+	assert(ofnode_valid(node));
+	debug("%s: %s: ", __func__, propname);
+
+	if (ofnode_is_np(node)) {
+		return of_read_u32_array(ofnode_to_np(node), propname,
+					 out_values, sz);
+	} else {
+		return fdtdec_get_int_array(gd->fdt_blob,
+					    ofnode_to_offset(node), propname,
+					    out_values, sz);
+	}
+}
+
+#if !CONFIG_IS_ENABLED(DM_INLINE_OFNODE)
+bool ofnode_is_enabled(ofnode node)
+{
+	if (ofnode_is_np(node)) {
+		return of_device_is_available(ofnode_to_np(node));
+	} else {
+		return fdtdec_get_is_enabled(gd->fdt_blob,
+					     ofnode_to_offset(node));
+	}
+}
+
+ofnode ofnode_first_subnode(ofnode node)
+{
+	assert(ofnode_valid(node));
+	if (ofnode_is_np(node))
+		return np_to_ofnode(node.np->child);
+
+	return offset_to_ofnode(
+		fdt_first_subnode(gd->fdt_blob, ofnode_to_offset(node)));
+}
+
+ofnode ofnode_next_subnode(ofnode node)
+{
+	assert(ofnode_valid(node));
+	if (ofnode_is_np(node))
+		return np_to_ofnode(node.np->sibling);
+
+	return offset_to_ofnode(
+		fdt_next_subnode(gd->fdt_blob, ofnode_to_offset(node)));
+}
+#endif /* !DM_INLINE_OFNODE */
+
+ofnode ofnode_get_parent(ofnode node)
+{
+	ofnode parent;
+
+	assert(ofnode_valid(node));
+	if (ofnode_is_np(node))
+		parent = np_to_ofnode(of_get_parent(ofnode_to_np(node)));
+	else
+		parent.of_offset = fdt_parent_offset(gd->fdt_blob,
+						     ofnode_to_offset(node));
+
+	return parent;
+}
+
+const char *ofnode_get_name(ofnode node)
+{
+	if (!ofnode_valid(node)) {
+		debug("%s node not valid\n", __func__);
+		return NULL;
+	}
+
+	if (ofnode_is_np(node))
+		return strrchr(node.np->full_name, '/') + 1;
+
+	return fdt_get_name(gd->fdt_blob, ofnode_to_offset(node), NULL);
+}
+
+ofnode ofnode_get_by_phandle(uint phandle)
+{
+	ofnode node;
+
+	if (of_live_active())
+		node = np_to_ofnode(of_find_node_by_phandle(phandle));
+	else
+		node.of_offset = fdt_node_offset_by_phandle(gd->fdt_blob,
+							    phandle);
+
+	return node;
+}
+
+fdt_addr_t ofnode_get_addr_size_index(ofnode node, int index, fdt_size_t *size)
+{
+	int na, ns;
+
+	*size = FDT_SIZE_T_NONE;
+
+	if (ofnode_is_np(node)) {
+		const __be32 *prop_val;
+		u64 size64;
+		uint flags;
+
+		prop_val = of_get_address(ofnode_to_np(node), index, &size64,
+					  &flags);
+		if (!prop_val)
+			return FDT_ADDR_T_NONE;
+		if (size)
+			*size = size64;
+
+		ns = of_n_size_cells(ofnode_to_np(node));
+
+		if (IS_ENABLED(CONFIG_OF_TRANSLATE) && ns > 0) {
+			return of_translate_address(ofnode_to_np(node), prop_val);
+		} else {
+			na = of_n_addr_cells(ofnode_to_np(node));
+			return of_read_number(prop_val, na);
+		}
+	} else {
+		na = ofnode_read_simple_addr_cells(ofnode_get_parent(node));
+		ns = ofnode_read_simple_size_cells(ofnode_get_parent(node));
+		return fdtdec_get_addr_size_fixed(gd->fdt_blob,
+						  ofnode_to_offset(node), "reg",
+						  index, na, ns, size, true);
+	}
+
+	return FDT_ADDR_T_NONE;
+}
+
+fdt_addr_t ofnode_get_addr_index(ofnode node, int index)
+{
+	fdt_size_t size;
+
+	return ofnode_get_addr_size_index(node, index, &size);
+}
+
+fdt_addr_t ofnode_get_addr(ofnode node)
+{
+	return ofnode_get_addr_index(node, 0);
+}
+
+fdt_size_t ofnode_get_size(ofnode node)
+{
+	fdt_size_t size;
+
+	ofnode_get_addr_size_index(node, 0, &size);
+
+	return size;
+}
+
+int ofnode_stringlist_search(ofnode node, const char *property,
+			     const char *string)
+{
+	if (ofnode_is_np(node)) {
+		return of_property_match_string(ofnode_to_np(node),
+						property, string);
+	} else {
+		int ret;
+
+		ret = fdt_stringlist_search(gd->fdt_blob,
+					    ofnode_to_offset(node), property,
+					    string);
+		if (ret == -FDT_ERR_NOTFOUND)
+			return -ENODATA;
+		else if (ret < 0)
+			return -EINVAL;
+
+		return ret;
+	}
+}
+
+int ofnode_read_string_index(ofnode node, const char *property, int index,
+			     const char **outp)
+{
+	if (ofnode_is_np(node)) {
+		return of_property_read_string_index(ofnode_to_np(node),
+						     property, index, outp);
+	} else {
+		int len;
+
+		*outp = fdt_stringlist_get(gd->fdt_blob, ofnode_to_offset(node),
+					   property, index, &len);
+		if (len < 0)
+			return -EINVAL;
+		return 0;
+	}
+}
+
+int ofnode_read_string_count(ofnode node, const char *property)
+{
+	if (ofnode_is_np(node)) {
+		return of_property_count_strings(ofnode_to_np(node), property);
+	} else {
+		return fdt_stringlist_count(gd->fdt_blob,
+					    ofnode_to_offset(node), property);
+	}
+}
+
+static void ofnode_from_fdtdec_phandle_args(struct fdtdec_phandle_args *in,
+					    struct ofnode_phandle_args *out)
+{
+	assert(OF_MAX_PHANDLE_ARGS == MAX_PHANDLE_ARGS);
+	out->node = offset_to_ofnode(in->node);
+	out->args_count = in->args_count;
+	memcpy(out->args, in->args, sizeof(out->args));
+}
+
+static void ofnode_from_of_phandle_args(struct of_phandle_args *in,
+					struct ofnode_phandle_args *out)
+{
+	assert(OF_MAX_PHANDLE_ARGS == MAX_PHANDLE_ARGS);
+	out->node = np_to_ofnode(in->np);
+	out->args_count = in->args_count;
+	memcpy(out->args, in->args, sizeof(out->args));
+}
+
+int ofnode_parse_phandle_with_args(ofnode node, const char *list_name,
+				   const char *cells_name, int cell_count,
+				   int index,
+				   struct ofnode_phandle_args *out_args)
+{
+	if (ofnode_is_np(node)) {
+		struct of_phandle_args args;
+		int ret;
+
+		ret = of_parse_phandle_with_args(ofnode_to_np(node),
+						 list_name, cells_name,
+						 cell_count, index,
+						 &args);
+		if (ret)
+			return ret;
+		ofnode_from_of_phandle_args(&args, out_args);
+	} else {
+		struct fdtdec_phandle_args args;
+		int ret;
+
+		ret = fdtdec_parse_phandle_with_args(gd->fdt_blob,
+						     ofnode_to_offset(node),
+						     list_name, cells_name,
+						     cell_count, index, &args);
+		if (ret)
+			return ret;
+		ofnode_from_fdtdec_phandle_args(&args, out_args);
+	}
+
+	return 0;
+}
+
+int ofnode_count_phandle_with_args(ofnode node, const char *list_name,
+				   const char *cells_name, int cell_count)
+{
+	if (ofnode_is_np(node))
+		return of_count_phandle_with_args(ofnode_to_np(node),
+				list_name, cells_name, cell_count);
+	else
+		return fdtdec_parse_phandle_with_args(gd->fdt_blob,
+				ofnode_to_offset(node), list_name, cells_name,
+				cell_count, -1, NULL);
+}
+
+ofnode ofnode_path(const char *path)
+{
+	if (of_live_active())
+		return np_to_ofnode(of_find_node_by_path(path));
+	else
+		return offset_to_ofnode(fdt_path_offset(gd->fdt_blob, path));
+}
+
+const void *ofnode_read_chosen_prop(const char *propname, int *sizep)
+{
+	ofnode chosen_node;
+
+	chosen_node = ofnode_path("/chosen");
+
+	return ofnode_read_prop(chosen_node, propname, sizep);
+}
+
+const char *ofnode_read_chosen_string(const char *propname)
+{
+	return ofnode_read_chosen_prop(propname, NULL);
+}
+
+ofnode ofnode_get_chosen_node(const char *name)
+{
+	const char *prop;
+
+	prop = ofnode_read_chosen_prop(name, NULL);
+	if (!prop)
+		return ofnode_null();
+
+	return ofnode_path(prop);
+}
+
+const void *ofnode_read_aliases_prop(const char *propname, int *sizep)
+{
+	ofnode node;
+
+	node = ofnode_path("/aliases");
+
+	return ofnode_read_prop(node, propname, sizep);
+}
+
+ofnode ofnode_get_aliases_node(const char *name)
+{
+	const char *prop;
+
+	prop = ofnode_read_aliases_prop(name, NULL);
+	if (!prop)
+		return ofnode_null();
+
+	debug("%s: node_path: %s\n", __func__, prop);
+
+	return ofnode_path(prop);
+}
+
+int ofnode_get_child_count(ofnode parent)
+{
+	ofnode child;
+	int num = 0;
+
+	ofnode_for_each_subnode(child, parent)
+		num++;
+
+	return num;
+}
+
+static int decode_timing_property(ofnode node, const char *name,
+				  struct timing_entry *result)
+{
+	int length, ret = 0;
+
+	length = ofnode_read_size(node, name);
+	if (length < 0) {
+		debug("%s: could not find property %s\n",
+		      ofnode_get_name(node), name);
+		return length;
+	}
+
+	if (length == sizeof(u32)) {
+		result->typ = ofnode_read_u32_default(node, name, 0);
+		result->min = result->typ;
+		result->max = result->typ;
+	} else {
+		ret = ofnode_read_u32_array(node, name, &result->min, 3);
+	}
+
+	return ret;
+}
+
+int ofnode_decode_display_timing(ofnode parent, int index,
+				 struct display_timing *dt)
+{
+	int i;
+	ofnode timings, node;
+	u32 val = 0;
+	int ret = 0;
+
+	timings = ofnode_find_subnode(parent, "display-timings");
+	if (!ofnode_valid(timings))
+		return -EINVAL;
+
+	i = 0;
+	ofnode_for_each_subnode(node, timings) {
+		if (i++ == index)
+			break;
+	}
+
+	if (!ofnode_valid(node))
+		return -EINVAL;
+
+	memset(dt, 0, sizeof(*dt));
+
+	ret |= decode_timing_property(node, "hback-porch", &dt->hback_porch);
+	ret |= decode_timing_property(node, "hfront-porch", &dt->hfront_porch);
+	ret |= decode_timing_property(node, "hactive", &dt->hactive);
+	ret |= decode_timing_property(node, "hsync-len", &dt->hsync_len);
+	ret |= decode_timing_property(node, "vback-porch", &dt->vback_porch);
+	ret |= decode_timing_property(node, "vfront-porch", &dt->vfront_porch);
+	ret |= decode_timing_property(node, "vactive", &dt->vactive);
+	ret |= decode_timing_property(node, "vsync-len", &dt->vsync_len);
+	ret |= decode_timing_property(node, "clock-frequency", &dt->pixelclock);
+
+	dt->flags = 0;
+	val = ofnode_read_u32_default(node, "vsync-active", -1);
+	if (val != -1) {
+		dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
+				DISPLAY_FLAGS_VSYNC_LOW;
+	}
+	val = ofnode_read_u32_default(node, "hsync-active", -1);
+	if (val != -1) {
+		dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
+				DISPLAY_FLAGS_HSYNC_LOW;
+	}
+	val = ofnode_read_u32_default(node, "de-active", -1);
+	if (val != -1) {
+		dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
+				DISPLAY_FLAGS_DE_LOW;
+	}
+	val = ofnode_read_u32_default(node, "pixelclk-active", -1);
+	if (val != -1) {
+		dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
+				DISPLAY_FLAGS_PIXDATA_NEGEDGE;
+	}
+
+	if (ofnode_read_bool(node, "interlaced"))
+		dt->flags |= DISPLAY_FLAGS_INTERLACED;
+	if (ofnode_read_bool(node, "doublescan"))
+		dt->flags |= DISPLAY_FLAGS_DOUBLESCAN;
+	if (ofnode_read_bool(node, "doubleclk"))
+		dt->flags |= DISPLAY_FLAGS_DOUBLECLK;
+
+	return ret;
+}
+
+const void *ofnode_get_property(ofnode node, const char *propname, int *lenp)
+{
+	if (ofnode_is_np(node))
+		return of_get_property(ofnode_to_np(node), propname, lenp);
+	else
+		return fdt_getprop(gd->fdt_blob, ofnode_to_offset(node),
+				   propname, lenp);
+}
+
+int ofnode_get_first_property(ofnode node, struct ofprop *prop)
+{
+	prop->node = node;
+
+	if (ofnode_is_np(node)) {
+		prop->prop = of_get_first_property(ofnode_to_np(prop->node));
+		if (!prop->prop)
+			return -FDT_ERR_NOTFOUND;
+	} else {
+		prop->offset =
+			fdt_first_property_offset(gd->fdt_blob,
+						  ofnode_to_offset(prop->node));
+		if (prop->offset < 0)
+			return prop->offset;
+	}
+
+	return 0;
+}
+
+int ofnode_get_next_property(struct ofprop *prop)
+{
+	if (ofnode_is_np(prop->node)) {
+		prop->prop = of_get_next_property(ofnode_to_np(prop->node),
+						  prop->prop);
+		if (!prop->prop)
+			return -FDT_ERR_NOTFOUND;
+	} else {
+		prop->offset = fdt_next_property_offset(gd->fdt_blob,
+							prop->offset);
+		if (prop->offset  < 0)
+			return prop->offset;
+	}
+
+	return 0;
+}
+
+const void *ofnode_get_property_by_prop(const struct ofprop *prop,
+					const char **propname, int *lenp)
+{
+	if (ofnode_is_np(prop->node))
+		return of_get_property_by_prop(ofnode_to_np(prop->node),
+					       prop->prop, propname, lenp);
+	else
+		return fdt_getprop_by_offset(gd->fdt_blob,
+					     prop->offset,
+					     propname, lenp);
+}
+
+bool ofnode_is_available(ofnode node)
+{
+	if (ofnode_is_np(node))
+		return of_device_is_available(ofnode_to_np(node));
+	else
+		return fdtdec_get_is_enabled(gd->fdt_blob,
+					     ofnode_to_offset(node));
+}
+
+fdt_addr_t ofnode_get_addr_size(ofnode node, const char *property,
+				fdt_size_t *sizep)
+{
+	if (ofnode_is_np(node)) {
+		int na, ns;
+		int psize;
+		const struct device_node *np = ofnode_to_np(node);
+		const __be32 *prop = of_get_property(np, property, &psize);
+
+		if (!prop)
+			return FDT_ADDR_T_NONE;
+		na = of_n_addr_cells(np);
+		ns = of_n_size_cells(np);
+		*sizep = of_read_number(prop + na, ns);
+
+		if (CONFIG_IS_ENABLED(OF_TRANSLATE) && ns > 0)
+			return of_translate_address(np, prop);
+		else
+			return of_read_number(prop, na);
+	} else {
+		return fdtdec_get_addr_size(gd->fdt_blob,
+					    ofnode_to_offset(node), property,
+					    sizep);
+	}
+}
+
+const uint8_t *ofnode_read_u8_array_ptr(ofnode node, const char *propname,
+					size_t sz)
+{
+	if (ofnode_is_np(node)) {
+		const struct device_node *np = ofnode_to_np(node);
+		int psize;
+		const __be32 *prop = of_get_property(np, propname, &psize);
+
+		if (!prop || sz != psize)
+			return NULL;
+		return (uint8_t *)prop;
+
+	} else {
+		return fdtdec_locate_byte_array(gd->fdt_blob,
+				ofnode_to_offset(node), propname, sz);
+	}
+}
+
+int ofnode_read_pci_addr(ofnode node, enum fdt_pci_space type,
+			 const char *propname, struct fdt_pci_addr *addr)
+{
+	const fdt32_t *cell;
+	int len;
+	int ret = -ENOENT;
+
+	debug("%s: %s: ", __func__, propname);
+
+	/*
+	 * If we follow the pci bus bindings strictly, we should check
+	 * the value of the node's parent node's #address-cells and
+	 * #size-cells. They need to be 3 and 2 accordingly. However,
+	 * for simplicity we skip the check here.
+	 */
+	cell = ofnode_get_property(node, propname, &len);
+	if (!cell)
+		goto fail;
+
+	if ((len % FDT_PCI_REG_SIZE) == 0) {
+		int num = len / FDT_PCI_REG_SIZE;
+		int i;
+
+		for (i = 0; i < num; i++) {
+			debug("pci address #%d: %08lx %08lx %08lx\n", i,
+			      (ulong)fdt32_to_cpu(cell[0]),
+			      (ulong)fdt32_to_cpu(cell[1]),
+			      (ulong)fdt32_to_cpu(cell[2]));
+			if ((fdt32_to_cpu(*cell) & type) == type) {
+				addr->phys_hi = fdt32_to_cpu(cell[0]);
+				addr->phys_mid = fdt32_to_cpu(cell[1]);
+				addr->phys_lo = fdt32_to_cpu(cell[2]);
+				break;
+			}
+
+			cell += (FDT_PCI_ADDR_CELLS +
+				 FDT_PCI_SIZE_CELLS);
+		}
+
+		if (i == num) {
+			ret = -ENXIO;
+			goto fail;
+		}
+
+		return 0;
+	}
+
+	ret = -EINVAL;
+
+fail:
+	debug("(not found)\n");
+	return ret;
+}
+
+int ofnode_read_pci_vendev(ofnode node, u16 *vendor, u16 *device)
+{
+	const char *list, *end;
+	int len;
+
+	list = ofnode_get_property(node, "compatible", &len);
+	if (!list)
+		return -ENOENT;
+
+	end = list + len;
+	while (list < end) {
+		len = strlen(list);
+		if (len >= strlen("pciVVVV,DDDD")) {
+			char *s = strstr(list, "pci");
+
+			/*
+			 * check if the string is something like pciVVVV,DDDD.RR
+			 * or just pciVVVV,DDDD
+			 */
+			if (s && s[7] == ',' &&
+			    (s[12] == '.' || s[12] == 0)) {
+				s += 3;
+				*vendor = simple_strtol(s, NULL, 16);
+
+				s += 5;
+				*device = simple_strtol(s, NULL, 16);
+
+				return 0;
+			}
+		}
+		list += (len + 1);
+	}
+
+	return -ENOENT;
+}
+
+int ofnode_read_addr_cells(ofnode node)
+{
+	if (ofnode_is_np(node)) {
+		return of_n_addr_cells(ofnode_to_np(node));
+	} else {
+		int parent = fdt_parent_offset(gd->fdt_blob,
+					       ofnode_to_offset(node));
+
+		return fdt_address_cells(gd->fdt_blob, parent);
+	}
+}
+
+int ofnode_read_size_cells(ofnode node)
+{
+	if (ofnode_is_np(node)) {
+		return of_n_size_cells(ofnode_to_np(node));
+	} else {
+		int parent = fdt_parent_offset(gd->fdt_blob,
+					       ofnode_to_offset(node));
+
+		return fdt_size_cells(gd->fdt_blob, parent);
+	}
+}
+
+int ofnode_read_simple_addr_cells(ofnode node)
+{
+	if (ofnode_is_np(node))
+		return of_simple_addr_cells(ofnode_to_np(node));
+	else
+		return fdt_address_cells(gd->fdt_blob, ofnode_to_offset(node));
+}
+
+int ofnode_read_simple_size_cells(ofnode node)
+{
+	if (ofnode_is_np(node))
+		return of_simple_size_cells(ofnode_to_np(node));
+	else
+		return fdt_size_cells(gd->fdt_blob, ofnode_to_offset(node));
+}
+
+bool ofnode_pre_reloc(ofnode node)
+{
+#if defined(CONFIG_SPL_BUILD) || defined(CONFIG_TPL_BUILD)
+	/* for SPL and TPL the remaining nodes after the fdtgrep 1st pass
+	 * had property dm-pre-reloc or u-boot,dm-spl/tpl.
+	 * They are removed in final dtb (fdtgrep 2nd pass)
+	 */
+	return true;
+#else
+	if (ofnode_read_bool(node, "u-boot,dm-pre-reloc"))
+		return true;
+	if (ofnode_read_bool(node, "u-boot,dm-pre-proper"))
+		return true;
+
+	/*
+	 * In regular builds individual spl and tpl handling both
+	 * count as handled pre-relocation for later second init.
+	 */
+	if (ofnode_read_bool(node, "u-boot,dm-spl") ||
+	    ofnode_read_bool(node, "u-boot,dm-tpl"))
+		return true;
+
+	return false;
+#endif
+}
+
+int ofnode_read_resource(ofnode node, uint index, struct resource *res)
+{
+	if (ofnode_is_np(node)) {
+		return of_address_to_resource(ofnode_to_np(node), index, res);
+	} else {
+		struct fdt_resource fres;
+		int ret;
+
+		ret = fdt_get_resource(gd->fdt_blob, ofnode_to_offset(node),
+				       "reg", index, &fres);
+		if (ret < 0)
+			return -EINVAL;
+		memset(res, '\0', sizeof(*res));
+		res->start = fres.start;
+		res->end = fres.end;
+
+		return 0;
+	}
+}
+
+int ofnode_read_resource_byname(ofnode node, const char *name,
+				struct resource *res)
+{
+	int index;
+
+	index = ofnode_stringlist_search(node, "reg-names", name);
+	if (index < 0)
+		return index;
+
+	return ofnode_read_resource(node, index, res);
+}
+
+u64 ofnode_translate_address(ofnode node, const fdt32_t *in_addr)
+{
+	if (ofnode_is_np(node))
+		return of_translate_address(ofnode_to_np(node), in_addr);
+	else
+		return fdt_translate_address(gd->fdt_blob, ofnode_to_offset(node), in_addr);
+}
+
+u64 ofnode_translate_dma_address(ofnode node, const fdt32_t *in_addr)
+{
+	if (ofnode_is_np(node))
+		return of_translate_dma_address(ofnode_to_np(node), in_addr);
+	else
+		return fdt_translate_dma_address(gd->fdt_blob, ofnode_to_offset(node), in_addr);
+}
+
+int ofnode_get_dma_range(ofnode node, phys_addr_t *cpu, dma_addr_t *bus, u64 *size)
+{
+	if (ofnode_is_np(node))
+		return of_get_dma_range(ofnode_to_np(node), cpu, bus, size);
+	else
+		return fdt_get_dma_range(gd->fdt_blob, ofnode_to_offset(node),
+					 cpu, bus, size);
+}
+
+int ofnode_device_is_compatible(ofnode node, const char *compat)
+{
+	if (ofnode_is_np(node))
+		return of_device_is_compatible(ofnode_to_np(node), compat,
+					       NULL, NULL);
+	else
+		return !fdt_node_check_compatible(gd->fdt_blob,
+						  ofnode_to_offset(node),
+						  compat);
+}
+
+ofnode ofnode_by_compatible(ofnode from, const char *compat)
+{
+	if (of_live_active()) {
+		return np_to_ofnode(of_find_compatible_node(
+			(struct device_node *)ofnode_to_np(from), NULL,
+			compat));
+	} else {
+		return offset_to_ofnode(fdt_node_offset_by_compatible(
+				gd->fdt_blob, ofnode_to_offset(from), compat));
+	}
+}
+
+ofnode ofnode_by_prop_value(ofnode from, const char *propname,
+			    const void *propval, int proplen)
+{
+	if (of_live_active()) {
+		return np_to_ofnode(of_find_node_by_prop_value(
+			(struct device_node *)ofnode_to_np(from), propname,
+			propval, proplen));
+	} else {
+		return offset_to_ofnode(fdt_node_offset_by_prop_value(
+				gd->fdt_blob, ofnode_to_offset(from),
+				propname, propval, proplen));
+	}
+}
+
+int ofnode_write_prop(ofnode node, const char *propname, int len,
+		      const void *value)
+{
+	const struct device_node *np = ofnode_to_np(node);
+	struct property *pp;
+	struct property *pp_last = NULL;
+	struct property *new;
+
+	if (!of_live_active())
+		return -ENOSYS;
+
+	if (!np)
+		return -EINVAL;
+
+	for (pp = np->properties; pp; pp = pp->next) {
+		if (strcmp(pp->name, propname) == 0) {
+			/* Property exists -> change value */
+			pp->value = (void *)value;
+			pp->length = len;
+			return 0;
+		}
+		pp_last = pp;
+	}
+
+	if (!pp_last)
+		return -ENOENT;
+
+	/* Property does not exist -> append new property */
+	new = malloc(sizeof(struct property));
+	if (!new)
+		return -ENOMEM;
+
+	new->name = strdup(propname);
+	if (!new->name) {
+		free(new);
+		return -ENOMEM;
+	}
+
+	new->value = (void *)value;
+	new->length = len;
+	new->next = NULL;
+
+	pp_last->next = new;
+
+	return 0;
+}
+
+int ofnode_write_string(ofnode node, const char *propname, const char *value)
+{
+	if (!of_live_active())
+		return -ENOSYS;
+
+	assert(ofnode_valid(node));
+
+	debug("%s: %s = %s", __func__, propname, value);
+
+	return ofnode_write_prop(node, propname, strlen(value) + 1, value);
+}
+
+int ofnode_set_enabled(ofnode node, bool value)
+{
+	if (!of_live_active())
+		return -ENOSYS;
+
+	assert(ofnode_valid(node));
+
+	if (value)
+		return ofnode_write_string(node, "status", "okay");
+	else
+		return ofnode_write_string(node, "status", "disabled");
+}