1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2017 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*/
#include <log.h>
#include <linux/libfdt.h>
#include <dm/of_access.h>
#include <dm/of_extra.h>
#include <dm/ofnode.h>
#include <dm/util.h>
int ofnode_read_fmap_entry(ofnode node, struct fmap_entry *entry)
{
const char *prop;
ofnode subnode;
if (ofnode_read_u32(node, "image-pos", &entry->offset)) {
dm_warn("Node '%s' has bad/missing 'image-pos' property\n",
ofnode_get_name(node));
return log_msg_ret("image-pos", -ENOENT);
}
if (ofnode_read_u32(node, "size", &entry->length)) {
dm_warn("Node '%s' has bad/missing 'size' property\n",
ofnode_get_name(node));
return log_msg_ret("size", -ENOENT);
}
entry->used = ofnode_read_s32_default(node, "used", entry->length);
prop = ofnode_read_string(node, "compress");
if (prop) {
if (!strcmp(prop, "lz4"))
entry->compress_algo = FMAP_COMPRESS_LZ4;
else if (!strcmp(prop, "lzma"))
entry->compress_algo = FMAP_COMPRESS_LZMA;
else
return log_msg_ret("compression algo", -EINVAL);
} else {
entry->compress_algo = FMAP_COMPRESS_NONE;
}
entry->unc_length = ofnode_read_s32_default(node, "uncomp-size",
entry->length);
subnode = ofnode_find_subnode(node, "hash");
if (ofnode_valid(subnode)) {
prop = ofnode_read_prop(subnode, "value", &entry->hash_size);
/* Assume it is sha256 */
entry->hash_algo = prop ? FMAP_HASH_SHA256 : FMAP_HASH_NONE;
entry->hash = (uint8_t *)prop;
}
return 0;
}
int ofnode_decode_region(ofnode node, const char *prop_name, fdt_addr_t *basep,
fdt_size_t *sizep)
{
const fdt_addr_t *cell;
int len;
log_debug("%s: %s: %s\n", __func__, ofnode_get_name(node), prop_name);
cell = ofnode_get_property(node, prop_name, &len);
if (!cell || (len < sizeof(fdt_addr_t) * 2)) {
dm_warn("cell=%p, len=%d\n", cell, len);
return -1;
}
*basep = fdt_addr_to_cpu(*cell);
*sizep = fdt_size_to_cpu(cell[1]);
log_debug("%s: base=%08lx, size=%lx\n", __func__, (ulong)*basep,
(ulong)*sizep);
return 0;
}
int ofnode_decode_memory_region(ofnode config_node, const char *mem_type,
const char *suffix, fdt_addr_t *basep,
fdt_size_t *sizep)
{
char prop_name[50];
const char *mem;
fdt_size_t size, offset_size;
fdt_addr_t base, offset;
ofnode node;
if (!ofnode_valid(config_node)) {
config_node = ofnode_path("/config");
if (!ofnode_valid(config_node)) {
dm_warn("%s: Cannot find /config node\n", __func__);
return -ENOENT;
}
}
if (!suffix)
suffix = "";
snprintf(prop_name, sizeof(prop_name), "%s-memory%s", mem_type,
suffix);
mem = ofnode_read_string(config_node, prop_name);
if (!mem) {
dm_warn("%s: No memory type for '%s', using /memory\n", __func__,
prop_name);
mem = "/memory";
}
node = ofnode_path(mem);
if (!ofnode_valid(node)) {
dm_warn("%s: Failed to find node '%s'\n", __func__, mem);
return -ENOENT;
}
/*
* Not strictly correct - the memory may have multiple banks. We just
* use the first
*/
if (ofnode_decode_region(node, "reg", &base, &size)) {
dm_warn("%s: Failed to decode memory region %s\n", __func__,
mem);
return -EINVAL;
}
snprintf(prop_name, sizeof(prop_name), "%s-offset%s", mem_type,
suffix);
if (ofnode_decode_region(config_node, prop_name, &offset,
&offset_size)) {
dm_warn("%s: Failed to decode memory region '%s'\n", __func__,
prop_name);
return -EINVAL;
}
*basep = base + offset;
*sizep = offset_size;
return 0;
}
bool ofnode_phy_is_fixed_link(ofnode eth_node, ofnode *phy_node)
{
ofnode node, subnode;
int len;
subnode = ofnode_find_subnode(eth_node, "fixed-link");
if (ofnode_valid(subnode)) {
/* new binding */
node = subnode;
} else if (ofnode_get_property(eth_node, "fixed-link", &len) &&
len == (5 * sizeof(__be32))) {
/* old binding */
node = eth_node;
} else {
return false;
}
if (phy_node)
*phy_node = node;
return true;
}
bool ofnode_eth_uses_inband_aneg(ofnode eth_node)
{
bool inband_aneg = false;
const char *managed;
managed = ofnode_read_string(eth_node, "managed");
if (managed && !strcmp(managed, "in-band-status"))
inband_aneg = true;
return inband_aneg;
}
|
