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8#include <linux/io.h>
9#include <linux/slab.h>
10#include <linux/module.h>
11#include <linux/of_fdt.h>
12#include <linux/sys_soc.h>
13#include <linux/of_address.h>
14#include <linux/platform_device.h>
15#include <linux/fsl/guts.h>
16
17struct guts {
18 struct ccsr_guts __iomem *regs;
19 bool little_endian;
20};
21
22struct fsl_soc_die_attr {
23 char *die;
24 u32 svr;
25 u32 mask;
26};
27
28static struct guts *guts;
29static struct soc_device_attribute soc_dev_attr;
30static struct soc_device *soc_dev;
31static struct device_node *root;
32
33
34
35static const struct fsl_soc_die_attr fsl_soc_die[] = {
36
37
38
39
40
41 { .die = "T4240",
42 .svr = 0x82400000,
43 .mask = 0xfff00000,
44 },
45
46 { .die = "T1040",
47 .svr = 0x85200000,
48 .mask = 0xfff00000,
49 },
50
51 { .die = "T2080",
52 .svr = 0x85300000,
53 .mask = 0xfff00000,
54 },
55
56 { .die = "T1024",
57 .svr = 0x85400000,
58 .mask = 0xfff00000,
59 },
60
61
62
63
64
65
66 { .die = "LS1043A",
67 .svr = 0x87920000,
68 .mask = 0xffff0000,
69 },
70
71 { .die = "LS2080A",
72 .svr = 0x87010000,
73 .mask = 0xff3f0000,
74 },
75
76 { .die = "LS1088A",
77 .svr = 0x87030000,
78 .mask = 0xff3f0000,
79 },
80
81 { .die = "LS1012A",
82 .svr = 0x87040000,
83 .mask = 0xffff0000,
84 },
85
86 { .die = "LS1046A",
87 .svr = 0x87070000,
88 .mask = 0xffff0000,
89 },
90
91 { .die = "LS2088A",
92 .svr = 0x87090000,
93 .mask = 0xff3f0000,
94 },
95
96 { .die = "LS1021A",
97 .svr = 0x87000000,
98 .mask = 0xfff70000,
99 },
100
101 { .die = "LX2160A",
102 .svr = 0x87360000,
103 .mask = 0xff3f0000,
104 },
105 { },
106};
107
108static const struct fsl_soc_die_attr *fsl_soc_die_match(
109 u32 svr, const struct fsl_soc_die_attr *matches)
110{
111 while (matches->svr) {
112 if (matches->svr == (svr & matches->mask))
113 return matches;
114 matches++;
115 };
116 return NULL;
117}
118
119static u32 fsl_guts_get_svr(void)
120{
121 u32 svr = 0;
122
123 if (!guts || !guts->regs)
124 return svr;
125
126 if (guts->little_endian)
127 svr = ioread32(&guts->regs->svr);
128 else
129 svr = ioread32be(&guts->regs->svr);
130
131 return svr;
132}
133
134static int fsl_guts_probe(struct platform_device *pdev)
135{
136 struct device_node *np = pdev->dev.of_node;
137 struct device *dev = &pdev->dev;
138 struct resource *res;
139 const struct fsl_soc_die_attr *soc_die;
140 const char *machine;
141 u32 svr;
142
143
144 guts = devm_kzalloc(dev, sizeof(*guts), GFP_KERNEL);
145 if (!guts)
146 return -ENOMEM;
147
148 guts->little_endian = of_property_read_bool(np, "little-endian");
149
150 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
151 guts->regs = devm_ioremap_resource(dev, res);
152 if (IS_ERR(guts->regs))
153 return PTR_ERR(guts->regs);
154
155
156 root = of_find_node_by_path("/");
157 if (of_property_read_string(root, "model", &machine))
158 of_property_read_string_index(root, "compatible", 0, &machine);
159 if (machine)
160 soc_dev_attr.machine = machine;
161
162 svr = fsl_guts_get_svr();
163 soc_die = fsl_soc_die_match(svr, fsl_soc_die);
164 if (soc_die) {
165 soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL,
166 "QorIQ %s", soc_die->die);
167 } else {
168 soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL, "QorIQ");
169 }
170 if (!soc_dev_attr.family)
171 return -ENOMEM;
172 soc_dev_attr.soc_id = devm_kasprintf(dev, GFP_KERNEL,
173 "svr:0x%08x", svr);
174 if (!soc_dev_attr.soc_id)
175 return -ENOMEM;
176 soc_dev_attr.revision = devm_kasprintf(dev, GFP_KERNEL, "%d.%d",
177 (svr >> 4) & 0xf, svr & 0xf);
178 if (!soc_dev_attr.revision)
179 return -ENOMEM;
180
181 soc_dev = soc_device_register(&soc_dev_attr);
182 if (IS_ERR(soc_dev))
183 return PTR_ERR(soc_dev);
184
185 pr_info("Machine: %s\n", soc_dev_attr.machine);
186 pr_info("SoC family: %s\n", soc_dev_attr.family);
187 pr_info("SoC ID: %s, Revision: %s\n",
188 soc_dev_attr.soc_id, soc_dev_attr.revision);
189 return 0;
190}
191
192static int fsl_guts_remove(struct platform_device *dev)
193{
194 soc_device_unregister(soc_dev);
195 of_node_put(root);
196 return 0;
197}
198
199
200
201
202
203static const struct of_device_id fsl_guts_of_match[] = {
204 { .compatible = "fsl,qoriq-device-config-1.0", },
205 { .compatible = "fsl,qoriq-device-config-2.0", },
206 { .compatible = "fsl,p1010-guts", },
207 { .compatible = "fsl,p1020-guts", },
208 { .compatible = "fsl,p1021-guts", },
209 { .compatible = "fsl,p1022-guts", },
210 { .compatible = "fsl,p1023-guts", },
211 { .compatible = "fsl,p2020-guts", },
212 { .compatible = "fsl,bsc9131-guts", },
213 { .compatible = "fsl,bsc9132-guts", },
214 { .compatible = "fsl,mpc8536-guts", },
215 { .compatible = "fsl,mpc8544-guts", },
216 { .compatible = "fsl,mpc8548-guts", },
217 { .compatible = "fsl,mpc8568-guts", },
218 { .compatible = "fsl,mpc8569-guts", },
219 { .compatible = "fsl,mpc8572-guts", },
220 { .compatible = "fsl,ls1021a-dcfg", },
221 { .compatible = "fsl,ls1043a-dcfg", },
222 { .compatible = "fsl,ls2080a-dcfg", },
223 { .compatible = "fsl,ls1088a-dcfg", },
224 { .compatible = "fsl,ls1012a-dcfg", },
225 { .compatible = "fsl,ls1046a-dcfg", },
226 { .compatible = "fsl,lx2160a-dcfg", },
227 {}
228};
229MODULE_DEVICE_TABLE(of, fsl_guts_of_match);
230
231static struct platform_driver fsl_guts_driver = {
232 .driver = {
233 .name = "fsl-guts",
234 .of_match_table = fsl_guts_of_match,
235 },
236 .probe = fsl_guts_probe,
237 .remove = fsl_guts_remove,
238};
239
240static int __init fsl_guts_init(void)
241{
242 return platform_driver_register(&fsl_guts_driver);
243}
244core_initcall(fsl_guts_init);
245
246static void __exit fsl_guts_exit(void)
247{
248 platform_driver_unregister(&fsl_guts_driver);
249}
250module_exit(fsl_guts_exit);
251