2 * Renesas SoC Identification
4 * Copyright (C) 2014-2016 Glider bvba
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
18 #include <linux/of_address.h>
19 #include <linux/slab.h>
20 #include <linux/string.h>
21 #include <linux/sys_soc.h>
24 struct renesas_family {
26 u32 reg; /* CCCR or PRR, if not in DT */
29 static const struct renesas_family fam_rcar_gen1 __initconst __maybe_unused = {
31 .reg = 0xff000044, /* PRR (Product Register) */
34 static const struct renesas_family fam_rcar_gen2 __initconst __maybe_unused = {
36 .reg = 0xff000044, /* PRR (Product Register) */
39 static const struct renesas_family fam_rcar_gen3 __initconst __maybe_unused = {
41 .reg = 0xfff00044, /* PRR (Product Register) */
44 static const struct renesas_family fam_rmobile __initconst __maybe_unused = {
46 .reg = 0xe600101c, /* CCCR (Common Chip Code Register) */
49 static const struct renesas_family fam_rza __initconst __maybe_unused = {
53 static const struct renesas_family fam_rzg __initconst __maybe_unused = {
55 .reg = 0xff000044, /* PRR (Product Register) */
58 static const struct renesas_family fam_shmobile __initconst __maybe_unused = {
60 .reg = 0xe600101c, /* CCCR (Common Chip Code Register) */
65 const struct renesas_family *family;
69 static const struct renesas_soc soc_rz_a1h __initconst __maybe_unused = {
73 static const struct renesas_soc soc_rmobile_ape6 __initconst __maybe_unused = {
74 .family = &fam_rmobile,
78 static const struct renesas_soc soc_rmobile_a1 __initconst __maybe_unused = {
79 .family = &fam_rmobile,
83 static const struct renesas_soc soc_rz_g1h __initconst __maybe_unused = {
88 static const struct renesas_soc soc_rz_g1m __initconst __maybe_unused = {
93 static const struct renesas_soc soc_rz_g1n __initconst __maybe_unused = {
98 static const struct renesas_soc soc_rz_g1e __initconst __maybe_unused = {
103 static const struct renesas_soc soc_rcar_m1a __initconst __maybe_unused = {
104 .family = &fam_rcar_gen1,
107 static const struct renesas_soc soc_rcar_h1 __initconst __maybe_unused = {
108 .family = &fam_rcar_gen1,
112 static const struct renesas_soc soc_rcar_h2 __initconst __maybe_unused = {
113 .family = &fam_rcar_gen2,
117 static const struct renesas_soc soc_rcar_m2_w __initconst __maybe_unused = {
118 .family = &fam_rcar_gen2,
122 static const struct renesas_soc soc_rcar_v2h __initconst __maybe_unused = {
123 .family = &fam_rcar_gen2,
127 static const struct renesas_soc soc_rcar_m2_n __initconst __maybe_unused = {
128 .family = &fam_rcar_gen2,
132 static const struct renesas_soc soc_rcar_e2 __initconst __maybe_unused = {
133 .family = &fam_rcar_gen2,
137 static const struct renesas_soc soc_rcar_h3 __initconst __maybe_unused = {
138 .family = &fam_rcar_gen3,
142 static const struct renesas_soc soc_rcar_m3_w __initconst __maybe_unused = {
143 .family = &fam_rcar_gen3,
147 static const struct renesas_soc soc_shmobile_ag5 __initconst __maybe_unused = {
148 .family = &fam_shmobile,
153 static const struct of_device_id renesas_socs[] __initconst = {
154 #ifdef CONFIG_ARCH_R7S72100
155 { .compatible = "renesas,r7s72100", .data = &soc_rz_a1h },
157 #ifdef CONFIG_ARCH_R8A73A4
158 { .compatible = "renesas,r8a73a4", .data = &soc_rmobile_ape6 },
160 #ifdef CONFIG_ARCH_R8A7740
161 { .compatible = "renesas,r8a7740", .data = &soc_rmobile_a1 },
163 #ifdef CONFIG_ARCH_R8A7742
164 { .compatible = "renesas,r8a7742", .data = &soc_rz_g1h },
166 #ifdef CONFIG_ARCH_R8A7743
167 { .compatible = "renesas,r8a7743", .data = &soc_rz_g1m },
169 #ifdef CONFIG_ARCH_R8A7744
170 { .compatible = "renesas,r8a7744", .data = &soc_rz_g1n },
172 #ifdef CONFIG_ARCH_R8A7745
173 { .compatible = "renesas,r8a7745", .data = &soc_rz_g1e },
175 #ifdef CONFIG_ARCH_R8A7778
176 { .compatible = "renesas,r8a7778", .data = &soc_rcar_m1a },
178 #ifdef CONFIG_ARCH_R8A7779
179 { .compatible = "renesas,r8a7779", .data = &soc_rcar_h1 },
181 #ifdef CONFIG_ARCH_R8A7790
182 { .compatible = "renesas,r8a7790", .data = &soc_rcar_h2 },
184 #ifdef CONFIG_ARCH_R8A7791
185 { .compatible = "renesas,r8a7791", .data = &soc_rcar_m2_w },
187 #ifdef CONFIG_ARCH_R8A7792
188 { .compatible = "renesas,r8a7792", .data = &soc_rcar_v2h },
190 #ifdef CONFIG_ARCH_R8A7793
191 { .compatible = "renesas,r8a7793", .data = &soc_rcar_m2_n },
193 #ifdef CONFIG_ARCH_R8A7794
194 { .compatible = "renesas,r8a7794", .data = &soc_rcar_e2 },
196 #ifdef CONFIG_ARCH_R8A7795
197 { .compatible = "renesas,r8a7795", .data = &soc_rcar_h3 },
199 #ifdef CONFIG_ARCH_R8A7796
200 { .compatible = "renesas,r8a7796", .data = &soc_rcar_m3_w },
202 #ifdef CONFIG_ARCH_SH73A0
203 { .compatible = "renesas,sh73a0", .data = &soc_shmobile_ag5 },
208 static int __init renesas_soc_init(void)
210 struct soc_device_attribute *soc_dev_attr;
211 const struct renesas_family *family;
212 const struct of_device_id *match;
213 const struct renesas_soc *soc;
214 void __iomem *chipid = NULL;
215 struct soc_device *soc_dev;
216 struct device_node *np;
217 unsigned int product;
219 match = of_match_node(renesas_socs, of_root);
224 family = soc->family;
226 /* Try PRR first, then hardcoded fallback */
227 np = of_find_compatible_node(NULL, NULL, "renesas,prr");
229 chipid = of_iomap(np, 0);
231 } else if (soc->id) {
232 chipid = ioremap(family->reg, 4);
235 product = readl(chipid);
237 if (soc->id && ((product >> 8) & 0xff) != soc->id) {
238 pr_warn("SoC mismatch (product = 0x%x)\n", product);
243 soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
247 np = of_find_node_by_path("/");
248 of_property_read_string(np, "model", &soc_dev_attr->machine);
251 soc_dev_attr->family = kstrdup_const(family->name, GFP_KERNEL);
252 soc_dev_attr->soc_id = kstrdup_const(strchr(match->compatible, ',') + 1,
255 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "ES%u.%u",
256 ((product >> 4) & 0x0f) + 1,
259 pr_info("Detected Renesas %s %s %s\n", soc_dev_attr->family,
260 soc_dev_attr->soc_id, soc_dev_attr->revision ?: "");
262 soc_dev = soc_device_register(soc_dev_attr);
263 if (IS_ERR(soc_dev)) {
264 kfree(soc_dev_attr->revision);
265 kfree_const(soc_dev_attr->soc_id);
266 kfree_const(soc_dev_attr->family);
268 return PTR_ERR(soc_dev);
273 early_initcall(renesas_soc_init);