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
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Freescale QorIQ Platforms GUTS Driver
*
* Copyright (C) 2016 Freescale Semiconductor, Inc.
*/
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/of_fdt.h>
#include <linux/sys_soc.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/fsl/guts.h>
struct guts {
struct ccsr_guts __iomem *regs;
bool little_endian;
};
struct fsl_soc_die_attr {
char *die;
u32 svr;
u32 mask;
};
static struct guts *guts;
static struct soc_device_attribute soc_dev_attr;
static struct soc_device *soc_dev;
/* SoC die attribute definition for QorIQ platform */
static const struct fsl_soc_die_attr fsl_soc_die[] = {
/*
* Power Architecture-based SoCs T Series
*/
/* Die: T4240, SoC: T4240/T4160/T4080 */
{ .die = "T4240",
.svr = 0x82400000,
.mask = 0xfff00000,
},
/* Die: T1040, SoC: T1040/T1020/T1042/T1022 */
{ .die = "T1040",
.svr = 0x85200000,
.mask = 0xfff00000,
},
/* Die: T2080, SoC: T2080/T2081 */
{ .die = "T2080",
.svr = 0x85300000,
.mask = 0xfff00000,
},
/* Die: T1024, SoC: T1024/T1014/T1023/T1013 */
{ .die = "T1024",
.svr = 0x85400000,
.mask = 0xfff00000,
},
/*
* ARM-based SoCs LS Series
*/
/* Die: LS1043A, SoC: LS1043A/LS1023A */
{ .die = "LS1043A",
.svr = 0x87920000,
.mask = 0xffff0000,
},
/* Die: LS2080A, SoC: LS2080A/LS2040A/LS2085A */
{ .die = "LS2080A",
.svr = 0x87010000,
.mask = 0xff3f0000,
},
/* Die: LS1088A, SoC: LS1088A/LS1048A/LS1084A/LS1044A */
{ .die = "LS1088A",
.svr = 0x87030000,
.mask = 0xff3f0000,
},
/* Die: LS1012A, SoC: LS1012A */
{ .die = "LS1012A",
.svr = 0x87040000,
.mask = 0xffff0000,
},
/* Die: LS1046A, SoC: LS1046A/LS1026A */
{ .die = "LS1046A",
.svr = 0x87070000,
.mask = 0xffff0000,
},
/* Die: LS2088A, SoC: LS2088A/LS2048A/LS2084A/LS2044A */
{ .die = "LS2088A",
.svr = 0x87090000,
.mask = 0xff3f0000,
},
/* Die: LS1021A, SoC: LS1021A/LS1020A/LS1022A */
{ .die = "LS1021A",
.svr = 0x87000000,
.mask = 0xfff70000,
},
/* Die: LX2160A, SoC: LX2160A/LX2120A/LX2080A */
{ .die = "LX2160A",
.svr = 0x87360000,
.mask = 0xff3f0000,
},
/* Die: LS1028A, SoC: LS1028A */
{ .die = "LS1028A",
.svr = 0x870b0000,
.mask = 0xff3f0000,
},
{ },
};
static const struct fsl_soc_die_attr *fsl_soc_die_match(
u32 svr, const struct fsl_soc_die_attr *matches)
{
while (matches->svr) {
if (matches->svr == (svr & matches->mask))
return matches;
matches++;
};
return NULL;
}
static u32 fsl_guts_get_svr(void)
{
u32 svr = 0;
if (!guts || !guts->regs)
return svr;
if (guts->little_endian)
svr = ioread32(&guts->regs->svr);
else
svr = ioread32be(&guts->regs->svr);
return svr;
}
static int fsl_guts_probe(struct platform_device *pdev)
{
struct device_node *root, *np = pdev->dev.of_node;
struct device *dev = &pdev->dev;
struct resource *res;
const struct fsl_soc_die_attr *soc_die;
const char *machine = NULL;
u32 svr;
/* Initialize guts */
guts = devm_kzalloc(dev, sizeof(*guts), GFP_KERNEL);
if (!guts)
return -ENOMEM;
guts->little_endian = of_property_read_bool(np, "little-endian");
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
guts->regs = devm_ioremap_resource(dev, res);
if (IS_ERR(guts->regs))
return PTR_ERR(guts->regs);
/* Register soc device */
root = of_find_node_by_path("/");
if (of_property_read_string(root, "model", &machine))
of_property_read_string_index(root, "compatible", 0, &machine);
if (machine) {
soc_dev_attr.machine = devm_kstrdup(dev, machine, GFP_KERNEL);
if (!soc_dev_attr.machine) {
of_node_put(root);
return -ENOMEM;
}
}
of_node_put(root);
svr = fsl_guts_get_svr();
soc_die = fsl_soc_die_match(svr, fsl_soc_die);
if (soc_die) {
soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL,
"QorIQ %s", soc_die->die);
} else {
soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL, "QorIQ");
}
if (!soc_dev_attr.family)
return -ENOMEM;
soc_dev_attr.soc_id = devm_kasprintf(dev, GFP_KERNEL,
"svr:0x%08x", svr);
if (!soc_dev_attr.soc_id)
return -ENOMEM;
soc_dev_attr.revision = devm_kasprintf(dev, GFP_KERNEL, "%d.%d",
(svr >> 4) & 0xf, svr & 0xf);
if (!soc_dev_attr.revision)
return -ENOMEM;
soc_dev = soc_device_register(&soc_dev_attr);
if (IS_ERR(soc_dev))
return PTR_ERR(soc_dev);
pr_info("Machine: %s\n", soc_dev_attr.machine);
pr_info("SoC family: %s\n", soc_dev_attr.family);
pr_info("SoC ID: %s, Revision: %s\n",
soc_dev_attr.soc_id, soc_dev_attr.revision);
return 0;
}
static int fsl_guts_remove(struct platform_device *dev)
{
soc_device_unregister(soc_dev);
return 0;
}
/*
* Table for matching compatible strings, for device tree
* guts node, for Freescale QorIQ SOCs.
*/
static const struct of_device_id fsl_guts_of_match[] = {
{ .compatible = "fsl,qoriq-device-config-1.0", },
{ .compatible = "fsl,qoriq-device-config-2.0", },
{ .compatible = "fsl,p1010-guts", },
{ .compatible = "fsl,p1020-guts", },
{ .compatible = "fsl,p1021-guts", },
{ .compatible = "fsl,p1022-guts", },
{ .compatible = "fsl,p1023-guts", },
{ .compatible = "fsl,p2020-guts", },
{ .compatible = "fsl,bsc9131-guts", },
{ .compatible = "fsl,bsc9132-guts", },
{ .compatible = "fsl,mpc8536-guts", },
{ .compatible = "fsl,mpc8544-guts", },
{ .compatible = "fsl,mpc8548-guts", },
{ .compatible = "fsl,mpc8568-guts", },
{ .compatible = "fsl,mpc8569-guts", },
{ .compatible = "fsl,mpc8572-guts", },
{ .compatible = "fsl,ls1021a-dcfg", },
{ .compatible = "fsl,ls1043a-dcfg", },
{ .compatible = "fsl,ls2080a-dcfg", },
{ .compatible = "fsl,ls1088a-dcfg", },
{ .compatible = "fsl,ls1012a-dcfg", },
{ .compatible = "fsl,ls1046a-dcfg", },
{ .compatible = "fsl,lx2160a-dcfg", },
{ .compatible = "fsl,ls1028a-dcfg", },
{}
};
MODULE_DEVICE_TABLE(of, fsl_guts_of_match);
static struct platform_driver fsl_guts_driver = {
.driver = {
.name = "fsl-guts",
.of_match_table = fsl_guts_of_match,
},
.probe = fsl_guts_probe,
.remove = fsl_guts_remove,
};
static int __init fsl_guts_init(void)
{
return platform_driver_register(&fsl_guts_driver);
}
core_initcall(fsl_guts_init);
static void __exit fsl_guts_exit(void)
{
platform_driver_unregister(&fsl_guts_driver);
}
module_exit(fsl_guts_exit);
|
