1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2017 Google, Inc
4 * Written by Simon Glass <sjg@chromium.org>
9 #include <linux/libfdt.h>
10 #include <dm/of_access.h>
11 #include <dm/of_extra.h>
12 #include <dm/ofnode.h>
14 int ofnode_read_fmap_entry(ofnode node, struct fmap_entry *entry)
19 if (ofnode_read_u32(node, "image-pos", &entry->offset)) {
20 debug("Node '%s' has bad/missing 'image-pos' property\n",
21 ofnode_get_name(node));
22 return log_msg_ret("image-pos", -ENOENT);
24 if (ofnode_read_u32(node, "size", &entry->length)) {
25 debug("Node '%s' has bad/missing 'size' property\n",
26 ofnode_get_name(node));
27 return log_msg_ret("size", -ENOENT);
29 entry->used = ofnode_read_s32_default(node, "used", entry->length);
30 prop = ofnode_read_string(node, "compress");
32 if (!strcmp(prop, "lz4"))
33 entry->compress_algo = FMAP_COMPRESS_LZ4;
34 else if (!strcmp(prop, "lzma"))
35 entry->compress_algo = FMAP_COMPRESS_LZMA;
37 return log_msg_ret("compression algo", -EINVAL);
39 entry->compress_algo = FMAP_COMPRESS_NONE;
41 entry->unc_length = ofnode_read_s32_default(node, "uncomp-size",
43 subnode = ofnode_find_subnode(node, "hash");
44 if (ofnode_valid(subnode)) {
45 prop = ofnode_read_prop(subnode, "value", &entry->hash_size);
47 /* Assume it is sha256 */
48 entry->hash_algo = prop ? FMAP_HASH_SHA256 : FMAP_HASH_NONE;
49 entry->hash = (uint8_t *)prop;
55 int ofnode_decode_region(ofnode node, const char *prop_name, fdt_addr_t *basep,
58 const fdt_addr_t *cell;
61 debug("%s: %s: %s\n", __func__, ofnode_get_name(node), prop_name);
62 cell = ofnode_get_property(node, prop_name, &len);
63 if (!cell || (len < sizeof(fdt_addr_t) * 2)) {
64 debug("cell=%p, len=%d\n", cell, len);
68 *basep = fdt_addr_to_cpu(*cell);
69 *sizep = fdt_size_to_cpu(cell[1]);
70 debug("%s: base=%08lx, size=%lx\n", __func__, (ulong)*basep,
76 int ofnode_decode_memory_region(ofnode config_node, const char *mem_type,
77 const char *suffix, fdt_addr_t *basep,
82 fdt_size_t size, offset_size;
83 fdt_addr_t base, offset;
86 if (!ofnode_valid(config_node)) {
87 config_node = ofnode_path("/config");
88 if (!ofnode_valid(config_node)) {
89 debug("%s: Cannot find /config node\n", __func__);
96 snprintf(prop_name, sizeof(prop_name), "%s-memory%s", mem_type,
98 mem = ofnode_read_string(config_node, prop_name);
100 debug("%s: No memory type for '%s', using /memory\n", __func__,
105 node = ofnode_path(mem);
106 if (!ofnode_valid(node)) {
107 debug("%s: Failed to find node '%s'\n", __func__, mem);
112 * Not strictly correct - the memory may have multiple banks. We just
115 if (ofnode_decode_region(node, "reg", &base, &size)) {
116 debug("%s: Failed to decode memory region %s\n", __func__,
121 snprintf(prop_name, sizeof(prop_name), "%s-offset%s", mem_type,
123 if (ofnode_decode_region(config_node, prop_name, &offset,
125 debug("%s: Failed to decode memory region '%s'\n", __func__,
130 *basep = base + offset;
131 *sizep = offset_size;
136 bool ofnode_phy_is_fixed_link(ofnode eth_node, ofnode *phy_node)
138 ofnode node, subnode;
141 subnode = ofnode_find_subnode(eth_node, "fixed-link");
142 if (ofnode_valid(subnode)) {
145 } else if (ofnode_get_property(eth_node, "fixed-link", &len) &&
146 len == (5 * sizeof(__be32))) {
159 bool ofnode_eth_uses_inband_aneg(ofnode eth_node)
161 bool inband_aneg = false;
164 managed = ofnode_read_string(eth_node, "managed");
165 if (managed && !strcmp(managed, "in-band-status"))