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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Device addresses
*
* Copyright (c) 2017 Google, Inc
*
* (C) Copyright 2012
* Pavel Herrmann <morpheus.ibis@gmail.com>
*/
#include <common.h>
#include <dm.h>
#include <fdt_support.h>
#include <log.h>
#include <asm/global_data.h>
#include <asm/io.h>
#include <dm/device-internal.h>
DECLARE_GLOBAL_DATA_PTR;
fdt_addr_t devfdt_get_addr_index(const struct udevice *dev, int index)
{
#if CONFIG_IS_ENABLED(OF_REAL)
int offset = dev_of_offset(dev);
int parent = dev_of_offset(dev->parent);
fdt_addr_t addr;
if (CONFIG_IS_ENABLED(OF_TRANSLATE)) {
const fdt32_t *reg;
int len = 0;
int na, ns;
na = fdt_address_cells(gd->fdt_blob, parent);
if (na < 1) {
debug("bad #address-cells\n");
return FDT_ADDR_T_NONE;
}
ns = fdt_size_cells(gd->fdt_blob, parent);
if (ns < 0) {
debug("bad #size-cells\n");
return FDT_ADDR_T_NONE;
}
reg = fdt_getprop(gd->fdt_blob, offset, "reg", &len);
if (!reg || (len <= (index * sizeof(fdt32_t) * (na + ns)))) {
debug("Req index out of range\n");
return FDT_ADDR_T_NONE;
}
reg += index * (na + ns);
if (ns) {
/*
* Use the full-fledged translate function for complex
* bus setups.
*/
addr = fdt_translate_address((void *)gd->fdt_blob,
offset, reg);
} else {
/* Non translatable if #size-cells == 0 */
addr = fdt_read_number(reg, na);
}
} else {
/*
* Use the "simple" translate function for less complex
* bus setups.
*/
addr = fdtdec_get_addr_size_auto_parent(gd->fdt_blob, parent,
offset, "reg", index,
NULL, false);
if (CONFIG_IS_ENABLED(SIMPLE_BUS) && addr != FDT_ADDR_T_NONE) {
if (device_get_uclass_id(dev->parent) ==
UCLASS_SIMPLE_BUS)
addr = simple_bus_translate(dev->parent, addr);
}
}
#if defined(CONFIG_TRANSLATION_OFFSET)
/*
* Some platforms need a special address translation. Those
* platforms (e.g. mvebu in SPL) can configure a translation
* offset by setting this value in the GD and enaling this
* feature via CONFIG_TRANSLATION_OFFSET. This value will
* get added to all addresses returned by devfdt_get_addr().
*/
addr += gd->translation_offset;
#endif
return addr;
#else
return FDT_ADDR_T_NONE;
#endif
}
void *devfdt_get_addr_index_ptr(const struct udevice *dev, int index)
{
fdt_addr_t addr = devfdt_get_addr_index(dev, index);
return (addr == FDT_ADDR_T_NONE) ? NULL : (void *)(uintptr_t)addr;
}
fdt_addr_t devfdt_get_addr_size_index(const struct udevice *dev, int index,
fdt_size_t *size)
{
#if CONFIG_IS_ENABLED(OF_CONTROL)
/*
* Only get the size in this first call. We'll get the addr in the
* next call to the exisiting dev_get_xxx function which handles
* all config options.
*/
fdtdec_get_addr_size_auto_noparent(gd->fdt_blob, dev_of_offset(dev),
"reg", index, size, false);
/*
* Get the base address via the existing function which handles
* all Kconfig cases
*/
return devfdt_get_addr_index(dev, index);
#else
return FDT_ADDR_T_NONE;
#endif
}
fdt_addr_t devfdt_get_addr_name(const struct udevice *dev, const char *name)
{
#if CONFIG_IS_ENABLED(OF_CONTROL)
int index;
index = fdt_stringlist_search(gd->fdt_blob, dev_of_offset(dev),
"reg-names", name);
if (index < 0)
return index;
return devfdt_get_addr_index(dev, index);
#else
return FDT_ADDR_T_NONE;
#endif
}
fdt_addr_t devfdt_get_addr_size_name(const struct udevice *dev,
const char *name, fdt_size_t *size)
{
#if CONFIG_IS_ENABLED(OF_CONTROL)
int index;
index = fdt_stringlist_search(gd->fdt_blob, dev_of_offset(dev),
"reg-names", name);
if (index < 0)
return index;
return devfdt_get_addr_size_index(dev, index, size);
#else
return FDT_ADDR_T_NONE;
#endif
}
fdt_addr_t devfdt_get_addr(const struct udevice *dev)
{
return devfdt_get_addr_index(dev, 0);
}
void *devfdt_get_addr_ptr(const struct udevice *dev)
{
return devfdt_get_addr_index_ptr(dev, 0);
}
void *devfdt_remap_addr_index(const struct udevice *dev, int index)
{
fdt_addr_t addr = devfdt_get_addr_index(dev, index);
if (addr == FDT_ADDR_T_NONE)
return NULL;
return map_physmem(addr, 0, MAP_NOCACHE);
}
void *devfdt_remap_addr_name(const struct udevice *dev, const char *name)
{
fdt_addr_t addr = devfdt_get_addr_name(dev, name);
if (addr == FDT_ADDR_T_NONE)
return NULL;
return map_physmem(addr, 0, MAP_NOCACHE);
}
void *devfdt_remap_addr(const struct udevice *dev)
{
return devfdt_remap_addr_index(dev, 0);
}
void *devfdt_map_physmem(const struct udevice *dev, unsigned long size)
{
fdt_addr_t addr = devfdt_get_addr(dev);
if (addr == FDT_ADDR_T_NONE)
return NULL;
return map_physmem(addr, size, MAP_NOCACHE);
}
fdt_addr_t devfdt_get_addr_pci(const struct udevice *dev)
{
ulong addr;
addr = devfdt_get_addr(dev);
if (CONFIG_IS_ENABLED(PCI) && addr == FDT_ADDR_T_NONE) {
struct fdt_pci_addr pci_addr;
u32 bar;
int ret;
ret = ofnode_read_pci_addr(dev_ofnode(dev), FDT_PCI_SPACE_MEM32,
"reg", &pci_addr);
if (ret) {
/* try if there is any i/o-mapped register */
ret = ofnode_read_pci_addr(dev_ofnode(dev),
FDT_PCI_SPACE_IO, "reg",
&pci_addr);
if (ret)
return FDT_ADDR_T_NONE;
}
ret = fdtdec_get_pci_bar32(dev, &pci_addr, &bar);
if (ret)
return FDT_ADDR_T_NONE;
addr = bar;
}
return addr;
}
|
