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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Freescale QorIQ Platforms GUTS Driver
4 *
5 * Copyright (C) 2016 Freescale Semiconductor, Inc.
6 */
7
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 fsl_soc_die_attr {
18 char *die;
19 u32 svr;
20 u32 mask;
21};
22
23struct fsl_soc_data {
24 const char *sfp_compat;
25 u32 uid_offset;
26};
27
28/* SoC die attribute definition for QorIQ platform */
29static const struct fsl_soc_die_attr fsl_soc_die[] = {
30 /*
31 * Power Architecture-based SoCs T Series
32 */
33
34 /* Die: T4240, SoC: T4240/T4160/T4080 */
35 { .die = "T4240",
36 .svr = 0x82400000,
37 .mask = 0xfff00000,
38 },
39 /* Die: T1040, SoC: T1040/T1020/T1042/T1022 */
40 { .die = "T1040",
41 .svr = 0x85200000,
42 .mask = 0xfff00000,
43 },
44 /* Die: T2080, SoC: T2080/T2081 */
45 { .die = "T2080",
46 .svr = 0x85300000,
47 .mask = 0xfff00000,
48 },
49 /* Die: T1024, SoC: T1024/T1014/T1023/T1013 */
50 { .die = "T1024",
51 .svr = 0x85400000,
52 .mask = 0xfff00000,
53 },
54
55 /*
56 * ARM-based SoCs LS Series
57 */
58
59 /* Die: LS1043A, SoC: LS1043A/LS1023A */
60 { .die = "LS1043A",
61 .svr = 0x87920000,
62 .mask = 0xffff0000,
63 },
64 /* Die: LS2080A, SoC: LS2080A/LS2040A/LS2085A */
65 { .die = "LS2080A",
66 .svr = 0x87010000,
67 .mask = 0xff3f0000,
68 },
69 /* Die: LS1088A, SoC: LS1088A/LS1048A/LS1084A/LS1044A */
70 { .die = "LS1088A",
71 .svr = 0x87030000,
72 .mask = 0xff3f0000,
73 },
74 /* Die: LS1012A, SoC: LS1012A */
75 { .die = "LS1012A",
76 .svr = 0x87040000,
77 .mask = 0xffff0000,
78 },
79 /* Die: LS1046A, SoC: LS1046A/LS1026A */
80 { .die = "LS1046A",
81 .svr = 0x87070000,
82 .mask = 0xffff0000,
83 },
84 /* Die: LS2088A, SoC: LS2088A/LS2048A/LS2084A/LS2044A */
85 { .die = "LS2088A",
86 .svr = 0x87090000,
87 .mask = 0xff3f0000,
88 },
89 /* Die: LS1021A, SoC: LS1021A/LS1020A/LS1022A */
90 { .die = "LS1021A",
91 .svr = 0x87000000,
92 .mask = 0xfff70000,
93 },
94 /* Die: LX2160A, SoC: LX2160A/LX2120A/LX2080A */
95 { .die = "LX2160A",
96 .svr = 0x87360000,
97 .mask = 0xff3f0000,
98 },
99 /* Die: LS1028A, SoC: LS1028A */
100 { .die = "LS1028A",
101 .svr = 0x870b0000,
102 .mask = 0xff3f0000,
103 },
104 { },
105};
106
107static const struct fsl_soc_die_attr *fsl_soc_die_match(
108 u32 svr, const struct fsl_soc_die_attr *matches)
109{
110 while (matches->svr) {
111 if (matches->svr == (svr & matches->mask))
112 return matches;
113 matches++;
114 }
115 return NULL;
116}
117
118static u64 fsl_guts_get_soc_uid(const char *compat, unsigned int offset)
119{
120 struct device_node *np;
121 void __iomem *sfp_base;
122 u64 uid;
123
124 np = of_find_compatible_node(NULL, NULL, compat);
125 if (!np)
126 return 0;
127
128 sfp_base = of_iomap(np, 0);
129 if (!sfp_base) {
130 of_node_put(np);
131 return 0;
132 }
133
134 uid = ioread32(sfp_base + offset);
135 uid <<= 32;
136 uid |= ioread32(sfp_base + offset + 4);
137
138 iounmap(sfp_base);
139 of_node_put(np);
140
141 return uid;
142}
143
144static const struct fsl_soc_data ls1028a_data = {
145 .sfp_compat = "fsl,ls1028a-sfp",
146 .uid_offset = 0x21c,
147};
148
149/*
150 * Table for matching compatible strings, for device tree
151 * guts node, for Freescale QorIQ SOCs.
152 */
153static const struct of_device_id fsl_guts_of_match[] = {
154 { .compatible = "fsl,qoriq-device-config-1.0", },
155 { .compatible = "fsl,qoriq-device-config-2.0", },
156 { .compatible = "fsl,p1010-guts", },
157 { .compatible = "fsl,p1020-guts", },
158 { .compatible = "fsl,p1021-guts", },
159 { .compatible = "fsl,p1022-guts", },
160 { .compatible = "fsl,p1023-guts", },
161 { .compatible = "fsl,p2020-guts", },
162 { .compatible = "fsl,bsc9131-guts", },
163 { .compatible = "fsl,bsc9132-guts", },
164 { .compatible = "fsl,mpc8536-guts", },
165 { .compatible = "fsl,mpc8544-guts", },
166 { .compatible = "fsl,mpc8548-guts", },
167 { .compatible = "fsl,mpc8568-guts", },
168 { .compatible = "fsl,mpc8569-guts", },
169 { .compatible = "fsl,mpc8572-guts", },
170 { .compatible = "fsl,ls1021a-dcfg", },
171 { .compatible = "fsl,ls1043a-dcfg", },
172 { .compatible = "fsl,ls2080a-dcfg", },
173 { .compatible = "fsl,ls1088a-dcfg", },
174 { .compatible = "fsl,ls1012a-dcfg", },
175 { .compatible = "fsl,ls1046a-dcfg", },
176 { .compatible = "fsl,lx2160a-dcfg", },
177 { .compatible = "fsl,ls1028a-dcfg", .data = &ls1028a_data},
178 {}
179};
180
181static int __init fsl_guts_init(void)
182{
183 struct soc_device_attribute *soc_dev_attr;
184 static struct soc_device *soc_dev;
185 const struct fsl_soc_die_attr *soc_die;
186 const struct fsl_soc_data *soc_data;
187 const struct of_device_id *match;
188 struct ccsr_guts __iomem *regs;
189 const char *machine = NULL;
190 struct device_node *np;
191 bool little_endian;
192 u64 soc_uid = 0;
193 u32 svr;
194 int ret;
195
196 np = of_find_matching_node_and_match(NULL, fsl_guts_of_match, &match);
197 if (!np)
198 return 0;
199 soc_data = match->data;
200
201 regs = of_iomap(np, 0);
202 if (!regs) {
203 of_node_put(np);
204 return -ENOMEM;
205 }
206
207 little_endian = of_property_read_bool(np, "little-endian");
208 if (little_endian)
209 svr = ioread32(®s->svr);
210 else
211 svr = ioread32be(®s->svr);
212 iounmap(regs);
213 of_node_put(np);
214
215 /* Register soc device */
216 soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
217 if (!soc_dev_attr)
218 return -ENOMEM;
219
220 if (of_property_read_string(of_root, "model", &machine))
221 of_property_read_string_index(of_root, "compatible", 0, &machine);
222 if (machine) {
223 soc_dev_attr->machine = kstrdup(machine, GFP_KERNEL);
224 if (!soc_dev_attr->machine)
225 goto err_nomem;
226 }
227
228 soc_die = fsl_soc_die_match(svr, fsl_soc_die);
229 if (soc_die) {
230 soc_dev_attr->family = kasprintf(GFP_KERNEL, "QorIQ %s",
231 soc_die->die);
232 } else {
233 soc_dev_attr->family = kasprintf(GFP_KERNEL, "QorIQ");
234 }
235 if (!soc_dev_attr->family)
236 goto err_nomem;
237
238 soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "svr:0x%08x", svr);
239 if (!soc_dev_attr->soc_id)
240 goto err_nomem;
241
242 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%d.%d",
243 (svr >> 4) & 0xf, svr & 0xf);
244 if (!soc_dev_attr->revision)
245 goto err_nomem;
246
247 if (soc_data)
248 soc_uid = fsl_guts_get_soc_uid(soc_data->sfp_compat,
249 soc_data->uid_offset);
250 if (soc_uid)
251 soc_dev_attr->serial_number = kasprintf(GFP_KERNEL, "%016llX",
252 soc_uid);
253
254 soc_dev = soc_device_register(soc_dev_attr);
255 if (IS_ERR(soc_dev)) {
256 ret = PTR_ERR(soc_dev);
257 goto err;
258 }
259
260 pr_info("Machine: %s\n", soc_dev_attr->machine);
261 pr_info("SoC family: %s\n", soc_dev_attr->family);
262 pr_info("SoC ID: %s, Revision: %s\n",
263 soc_dev_attr->soc_id, soc_dev_attr->revision);
264
265 return 0;
266
267err_nomem:
268 ret = -ENOMEM;
269err:
270 kfree(soc_dev_attr->machine);
271 kfree(soc_dev_attr->family);
272 kfree(soc_dev_attr->soc_id);
273 kfree(soc_dev_attr->revision);
274 kfree(soc_dev_attr->serial_number);
275 kfree(soc_dev_attr);
276
277 return ret;
278}
279core_initcall(fsl_guts_init);
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Freescale QorIQ Platforms GUTS Driver
4 *
5 * Copyright (C) 2016 Freescale Semiconductor, Inc.
6 */
7
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/* SoC die attribute definition for QorIQ platform */
35static const struct fsl_soc_die_attr fsl_soc_die[] = {
36 /*
37 * Power Architecture-based SoCs T Series
38 */
39
40 /* Die: T4240, SoC: T4240/T4160/T4080 */
41 { .die = "T4240",
42 .svr = 0x82400000,
43 .mask = 0xfff00000,
44 },
45 /* Die: T1040, SoC: T1040/T1020/T1042/T1022 */
46 { .die = "T1040",
47 .svr = 0x85200000,
48 .mask = 0xfff00000,
49 },
50 /* Die: T2080, SoC: T2080/T2081 */
51 { .die = "T2080",
52 .svr = 0x85300000,
53 .mask = 0xfff00000,
54 },
55 /* Die: T1024, SoC: T1024/T1014/T1023/T1013 */
56 { .die = "T1024",
57 .svr = 0x85400000,
58 .mask = 0xfff00000,
59 },
60
61 /*
62 * ARM-based SoCs LS Series
63 */
64
65 /* Die: LS1043A, SoC: LS1043A/LS1023A */
66 { .die = "LS1043A",
67 .svr = 0x87920000,
68 .mask = 0xffff0000,
69 },
70 /* Die: LS2080A, SoC: LS2080A/LS2040A/LS2085A */
71 { .die = "LS2080A",
72 .svr = 0x87010000,
73 .mask = 0xff3f0000,
74 },
75 /* Die: LS1088A, SoC: LS1088A/LS1048A/LS1084A/LS1044A */
76 { .die = "LS1088A",
77 .svr = 0x87030000,
78 .mask = 0xff3f0000,
79 },
80 /* Die: LS1012A, SoC: LS1012A */
81 { .die = "LS1012A",
82 .svr = 0x87040000,
83 .mask = 0xffff0000,
84 },
85 /* Die: LS1046A, SoC: LS1046A/LS1026A */
86 { .die = "LS1046A",
87 .svr = 0x87070000,
88 .mask = 0xffff0000,
89 },
90 /* Die: LS2088A, SoC: LS2088A/LS2048A/LS2084A/LS2044A */
91 { .die = "LS2088A",
92 .svr = 0x87090000,
93 .mask = 0xff3f0000,
94 },
95 /* Die: LS1021A, SoC: LS1021A/LS1020A/LS1022A */
96 { .die = "LS1021A",
97 .svr = 0x87000000,
98 .mask = 0xfff70000,
99 },
100 /* Die: LX2160A, SoC: LX2160A/LX2120A/LX2080A */
101 { .die = "LX2160A",
102 .svr = 0x87360000,
103 .mask = 0xff3f0000,
104 },
105 /* Die: LS1028A, SoC: LS1028A */
106 { .die = "LS1028A",
107 .svr = 0x870b0000,
108 .mask = 0xff3f0000,
109 },
110 { },
111};
112
113static const struct fsl_soc_die_attr *fsl_soc_die_match(
114 u32 svr, const struct fsl_soc_die_attr *matches)
115{
116 while (matches->svr) {
117 if (matches->svr == (svr & matches->mask))
118 return matches;
119 matches++;
120 };
121 return NULL;
122}
123
124static u32 fsl_guts_get_svr(void)
125{
126 u32 svr = 0;
127
128 if (!guts || !guts->regs)
129 return svr;
130
131 if (guts->little_endian)
132 svr = ioread32(&guts->regs->svr);
133 else
134 svr = ioread32be(&guts->regs->svr);
135
136 return svr;
137}
138
139static int fsl_guts_probe(struct platform_device *pdev)
140{
141 struct device_node *np = pdev->dev.of_node;
142 struct device *dev = &pdev->dev;
143 struct resource *res;
144 const struct fsl_soc_die_attr *soc_die;
145 const char *machine;
146 u32 svr;
147
148 /* Initialize guts */
149 guts = devm_kzalloc(dev, sizeof(*guts), GFP_KERNEL);
150 if (!guts)
151 return -ENOMEM;
152
153 guts->little_endian = of_property_read_bool(np, "little-endian");
154
155 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
156 guts->regs = devm_ioremap_resource(dev, res);
157 if (IS_ERR(guts->regs))
158 return PTR_ERR(guts->regs);
159
160 /* Register soc device */
161 root = of_find_node_by_path("/");
162 if (of_property_read_string(root, "model", &machine))
163 of_property_read_string_index(root, "compatible", 0, &machine);
164 if (machine)
165 soc_dev_attr.machine = machine;
166
167 svr = fsl_guts_get_svr();
168 soc_die = fsl_soc_die_match(svr, fsl_soc_die);
169 if (soc_die) {
170 soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL,
171 "QorIQ %s", soc_die->die);
172 } else {
173 soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL, "QorIQ");
174 }
175 if (!soc_dev_attr.family)
176 return -ENOMEM;
177 soc_dev_attr.soc_id = devm_kasprintf(dev, GFP_KERNEL,
178 "svr:0x%08x", svr);
179 if (!soc_dev_attr.soc_id)
180 return -ENOMEM;
181 soc_dev_attr.revision = devm_kasprintf(dev, GFP_KERNEL, "%d.%d",
182 (svr >> 4) & 0xf, svr & 0xf);
183 if (!soc_dev_attr.revision)
184 return -ENOMEM;
185
186 soc_dev = soc_device_register(&soc_dev_attr);
187 if (IS_ERR(soc_dev))
188 return PTR_ERR(soc_dev);
189
190 pr_info("Machine: %s\n", soc_dev_attr.machine);
191 pr_info("SoC family: %s\n", soc_dev_attr.family);
192 pr_info("SoC ID: %s, Revision: %s\n",
193 soc_dev_attr.soc_id, soc_dev_attr.revision);
194 return 0;
195}
196
197static int fsl_guts_remove(struct platform_device *dev)
198{
199 soc_device_unregister(soc_dev);
200 of_node_put(root);
201 return 0;
202}
203
204/*
205 * Table for matching compatible strings, for device tree
206 * guts node, for Freescale QorIQ SOCs.
207 */
208static const struct of_device_id fsl_guts_of_match[] = {
209 { .compatible = "fsl,qoriq-device-config-1.0", },
210 { .compatible = "fsl,qoriq-device-config-2.0", },
211 { .compatible = "fsl,p1010-guts", },
212 { .compatible = "fsl,p1020-guts", },
213 { .compatible = "fsl,p1021-guts", },
214 { .compatible = "fsl,p1022-guts", },
215 { .compatible = "fsl,p1023-guts", },
216 { .compatible = "fsl,p2020-guts", },
217 { .compatible = "fsl,bsc9131-guts", },
218 { .compatible = "fsl,bsc9132-guts", },
219 { .compatible = "fsl,mpc8536-guts", },
220 { .compatible = "fsl,mpc8544-guts", },
221 { .compatible = "fsl,mpc8548-guts", },
222 { .compatible = "fsl,mpc8568-guts", },
223 { .compatible = "fsl,mpc8569-guts", },
224 { .compatible = "fsl,mpc8572-guts", },
225 { .compatible = "fsl,ls1021a-dcfg", },
226 { .compatible = "fsl,ls1043a-dcfg", },
227 { .compatible = "fsl,ls2080a-dcfg", },
228 { .compatible = "fsl,ls1088a-dcfg", },
229 { .compatible = "fsl,ls1012a-dcfg", },
230 { .compatible = "fsl,ls1046a-dcfg", },
231 { .compatible = "fsl,lx2160a-dcfg", },
232 { .compatible = "fsl,ls1028a-dcfg", },
233 {}
234};
235MODULE_DEVICE_TABLE(of, fsl_guts_of_match);
236
237static struct platform_driver fsl_guts_driver = {
238 .driver = {
239 .name = "fsl-guts",
240 .of_match_table = fsl_guts_of_match,
241 },
242 .probe = fsl_guts_probe,
243 .remove = fsl_guts_remove,
244};
245
246static int __init fsl_guts_init(void)
247{
248 return platform_driver_register(&fsl_guts_driver);
249}
250core_initcall(fsl_guts_init);
251
252static void __exit fsl_guts_exit(void)
253{
254 platform_driver_unregister(&fsl_guts_driver);
255}
256module_exit(fsl_guts_exit);