drivers/soc/renesas/renesas-soc.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0
 /*
  * Renesas SoC Identification
  *
  * Copyright (C) 2014-2016 Glider bvba
  */

 #include <linux/io.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/slab.h>
 #include <linux/string.h>
 #include <linux/sys_soc.h>


 struct renesas_family {
 	const char name[16];
 	u32 reg;			/* CCCR or PRR, if not in DT */
 };

 static const struct renesas_family fam_rcar_gen1 __initconst __maybe_unused = {
 	.name	= "R-Car Gen1",
 	.reg	= 0xff000044,		/* PRR (Product Register) */
 };

 static const struct renesas_family fam_rcar_gen2 __initconst __maybe_unused = {
 	.name	= "R-Car Gen2",
 	.reg	= 0xff000044,		/* PRR (Product Register) */
 };

 static const struct renesas_family fam_rcar_gen3 __initconst __maybe_unused = {
 	.name	= "R-Car Gen3",
 	.reg	= 0xfff00044,		/* PRR (Product Register) */
 };

 static const struct renesas_family fam_rmobile __initconst __maybe_unused = {
 	.name	= "R-Mobile",
 	.reg	= 0xe600101c,		/* CCCR (Common Chip Code Register) */
 };

 static const struct renesas_family fam_rza1 __initconst __maybe_unused = {
 	.name	= "RZ/A1",
 };

 static const struct renesas_family fam_rza2 __initconst __maybe_unused = {
 	.name	= "RZ/A2",
 };

 static const struct renesas_family fam_rzg1 __initconst __maybe_unused = {
 	.name	= "RZ/G1",
 	.reg	= 0xff000044,		/* PRR (Product Register) */
 };

 static const struct renesas_family fam_rzg2 __initconst __maybe_unused = {
 	.name	= "RZ/G2",
 	.reg	= 0xfff00044,		/* PRR (Product Register) */
 };

 static const struct renesas_family fam_shmobile __initconst __maybe_unused = {
 	.name	= "SH-Mobile",
 	.reg	= 0xe600101c,		/* CCCR (Common Chip Code Register) */
 };


 struct renesas_soc {
 	const struct renesas_family *family;
 	u8 id;
 };

 static const struct renesas_soc soc_rz_a1h __initconst __maybe_unused = {
 	.family	= &fam_rza1,
 };

 static const struct renesas_soc soc_rz_a2m __initconst __maybe_unused = {
 	.family	= &fam_rza2,
 	.id	= 0x3b,
 };

 static const struct renesas_soc soc_rmobile_ape6 __initconst __maybe_unused = {
 	.family	= &fam_rmobile,
 	.id	= 0x3f,
 };

 static const struct renesas_soc soc_rmobile_a1 __initconst __maybe_unused = {
 	.family	= &fam_rmobile,
 	.id	= 0x40,
 };

 static const struct renesas_soc soc_rz_g1h __initconst __maybe_unused = {
 	.family	= &fam_rzg1,
 	.id	= 0x45,
 };

 static const struct renesas_soc soc_rz_g1m __initconst __maybe_unused = {
 	.family	= &fam_rzg1,
 	.id	= 0x47,
 };

 static const struct renesas_soc soc_rz_g1n __initconst __maybe_unused = {
 	.family	= &fam_rzg1,
 	.id	= 0x4b,
 };

 static const struct renesas_soc soc_rz_g1e __initconst __maybe_unused = {
 	.family	= &fam_rzg1,
 	.id	= 0x4c,
 };

 static const struct renesas_soc soc_rz_g1c __initconst __maybe_unused = {
 	.family	= &fam_rzg1,
 	.id	= 0x53,
 };

 static const struct renesas_soc soc_rz_g2m __initconst __maybe_unused = {
 	.family	= &fam_rzg2,
 	.id	= 0x52,
 };

 static const struct renesas_soc soc_rz_g2n __initconst __maybe_unused = {
 	.family = &fam_rzg2,
 	.id     = 0x55,
 };

 static const struct renesas_soc soc_rz_g2e __initconst __maybe_unused = {
 	.family	= &fam_rzg2,
 	.id	= 0x57,
 };

 static const struct renesas_soc soc_rz_g2h __initconst __maybe_unused = {
 	.family	= &fam_rzg2,
 	.id	= 0x4f,
 };

 static const struct renesas_soc soc_rcar_m1a __initconst __maybe_unused = {
 	.family	= &fam_rcar_gen1,
 };

 static const struct renesas_soc soc_rcar_h1 __initconst __maybe_unused = {
 	.family	= &fam_rcar_gen1,
 	.id	= 0x3b,
 };

 static const struct renesas_soc soc_rcar_h2 __initconst __maybe_unused = {
 	.family	= &fam_rcar_gen2,
 	.id	= 0x45,
 };

 static const struct renesas_soc soc_rcar_m2_w __initconst __maybe_unused = {
 	.family	= &fam_rcar_gen2,
 	.id	= 0x47,
 };

 static const struct renesas_soc soc_rcar_v2h __initconst __maybe_unused = {
 	.family	= &fam_rcar_gen2,
 	.id	= 0x4a,
 };

 static const struct renesas_soc soc_rcar_m2_n __initconst __maybe_unused = {
 	.family	= &fam_rcar_gen2,
 	.id	= 0x4b,
 };

 static const struct renesas_soc soc_rcar_e2 __initconst __maybe_unused = {
 	.family	= &fam_rcar_gen2,
 	.id	= 0x4c,
 };

 static const struct renesas_soc soc_rcar_h3 __initconst __maybe_unused = {
 	.family	= &fam_rcar_gen3,
 	.id	= 0x4f,
 };

 static const struct renesas_soc soc_rcar_m3_w __initconst __maybe_unused = {
 	.family	= &fam_rcar_gen3,
 	.id	= 0x52,
 };

 static const struct renesas_soc soc_rcar_m3_n __initconst __maybe_unused = {
 	.family = &fam_rcar_gen3,
 	.id     = 0x55,
 };

 static const struct renesas_soc soc_rcar_v3m __initconst __maybe_unused = {
 	.family	= &fam_rcar_gen3,
 	.id	= 0x54,
 };

 static const struct renesas_soc soc_rcar_v3h __initconst __maybe_unused = {
 	.family	= &fam_rcar_gen3,
 	.id	= 0x56,
 };

 static const struct renesas_soc soc_rcar_e3 __initconst __maybe_unused = {
 	.family	= &fam_rcar_gen3,
 	.id	= 0x57,
 };

 static const struct renesas_soc soc_rcar_d3 __initconst __maybe_unused = {
 	.family	= &fam_rcar_gen3,
 	.id	= 0x58,
 };

 static const struct renesas_soc soc_rcar_v3u __initconst __maybe_unused = {
 	.family	= &fam_rcar_gen3,
 	.id	= 0x59,
 };

 static const struct renesas_soc soc_shmobile_ag5 __initconst __maybe_unused = {
 	.family	= &fam_shmobile,
 	.id	= 0x37,
 };


 static const struct of_device_id renesas_socs[] __initconst = {
 #ifdef CONFIG_ARCH_R7S72100
 	{ .compatible = "renesas,r7s72100",	.data = &soc_rz_a1h },
 #endif
 #ifdef CONFIG_ARCH_R7S9210
 	{ .compatible = "renesas,r7s9210",	.data = &soc_rz_a2m },
 #endif
 #ifdef CONFIG_ARCH_R8A73A4
 	{ .compatible = "renesas,r8a73a4",	.data = &soc_rmobile_ape6 },
 #endif
 #ifdef CONFIG_ARCH_R8A7740
 	{ .compatible = "renesas,r8a7740",	.data = &soc_rmobile_a1 },
 #endif
 #ifdef CONFIG_ARCH_R8A7742
 	{ .compatible = "renesas,r8a7742",	.data = &soc_rz_g1h },
 #endif
 #ifdef CONFIG_ARCH_R8A7743
 	{ .compatible = "renesas,r8a7743",	.data = &soc_rz_g1m },
 #endif
 #ifdef CONFIG_ARCH_R8A7744
 	{ .compatible = "renesas,r8a7744",	.data = &soc_rz_g1n },
 #endif
 #ifdef CONFIG_ARCH_R8A7745
 	{ .compatible = "renesas,r8a7745",	.data = &soc_rz_g1e },
 #endif
 #ifdef CONFIG_ARCH_R8A77470
 	{ .compatible = "renesas,r8a77470",	.data = &soc_rz_g1c },
 #endif
 #ifdef CONFIG_ARCH_R8A774A1
 	{ .compatible = "renesas,r8a774a1",	.data = &soc_rz_g2m },
 #endif
 #ifdef CONFIG_ARCH_R8A774B1
 	{ .compatible = "renesas,r8a774b1",	.data = &soc_rz_g2n },
 #endif
 #ifdef CONFIG_ARCH_R8A774C0
 	{ .compatible = "renesas,r8a774c0",	.data = &soc_rz_g2e },
 #endif
 #ifdef CONFIG_ARCH_R8A774E1
 	{ .compatible = "renesas,r8a774e1",	.data = &soc_rz_g2h },
 #endif
 #ifdef CONFIG_ARCH_R8A7778
 	{ .compatible = "renesas,r8a7778",	.data = &soc_rcar_m1a },
 #endif
 #ifdef CONFIG_ARCH_R8A7779
 	{ .compatible = "renesas,r8a7779",	.data = &soc_rcar_h1 },
 #endif
 #ifdef CONFIG_ARCH_R8A7790
 	{ .compatible = "renesas,r8a7790",	.data = &soc_rcar_h2 },
 #endif
 #ifdef CONFIG_ARCH_R8A7791
 	{ .compatible = "renesas,r8a7791",	.data = &soc_rcar_m2_w },
 #endif
 #ifdef CONFIG_ARCH_R8A7792
 	{ .compatible = "renesas,r8a7792",	.data = &soc_rcar_v2h },
 #endif
 #ifdef CONFIG_ARCH_R8A7793
 	{ .compatible = "renesas,r8a7793",	.data = &soc_rcar_m2_n },
 #endif
 #ifdef CONFIG_ARCH_R8A7794
 	{ .compatible = "renesas,r8a7794",	.data = &soc_rcar_e2 },
 #endif
 #if defined(CONFIG_ARCH_R8A77950) || defined(CONFIG_ARCH_R8A77951)
 	{ .compatible = "renesas,r8a7795",	.data = &soc_rcar_h3 },
 #endif
 #ifdef CONFIG_ARCH_R8A77960
 	{ .compatible = "renesas,r8a7796",	.data = &soc_rcar_m3_w },
 #endif
 #ifdef CONFIG_ARCH_R8A77961
 	{ .compatible = "renesas,r8a77961",	.data = &soc_rcar_m3_w },
 #endif
 #ifdef CONFIG_ARCH_R8A77965
 	{ .compatible = "renesas,r8a77965",	.data = &soc_rcar_m3_n },
 #endif
 #ifdef CONFIG_ARCH_R8A77970
 	{ .compatible = "renesas,r8a77970",	.data = &soc_rcar_v3m },
 #endif
 #ifdef CONFIG_ARCH_R8A77980
 	{ .compatible = "renesas,r8a77980",	.data = &soc_rcar_v3h },
 #endif
 #ifdef CONFIG_ARCH_R8A77990
 	{ .compatible = "renesas,r8a77990",	.data = &soc_rcar_e3 },
 #endif
 #ifdef CONFIG_ARCH_R8A77995
 	{ .compatible = "renesas,r8a77995",	.data = &soc_rcar_d3 },
 #endif
 #ifdef CONFIG_ARCH_R8A779A0
 	{ .compatible = "renesas,r8a779a0",	.data = &soc_rcar_v3u },
 #endif
 #ifdef CONFIG_ARCH_SH73A0
 	{ .compatible = "renesas,sh73a0",	.data = &soc_shmobile_ag5 },
 #endif
 	{ /* sentinel */ }
 };

 static int __init renesas_soc_init(void)
 {
 	struct soc_device_attribute *soc_dev_attr;
 	const struct renesas_family *family;
 	const struct of_device_id *match;
 	const struct renesas_soc *soc;
 	void __iomem *chipid = NULL;
 	struct soc_device *soc_dev;
 	struct device_node *np;
 	unsigned int product, eshi = 0, eslo;

 	match = of_match_node(renesas_socs, of_root);
 	if (!match)
 		return -ENODEV;

 	soc = match->data;
 	family = soc->family;

 	np = of_find_compatible_node(NULL, NULL, "renesas,bsid");
 	if (np) {
 		chipid = of_iomap(np, 0);
 		of_node_put(np);

 		if (chipid) {
 			product = readl(chipid);
 			iounmap(chipid);

 			if (soc->id && ((product >> 16) & 0xff) != soc->id) {
 				pr_warn("SoC mismatch (product = 0x%x)\n",
 					product);
 				return -ENODEV;
 			}
 		}

 		/*
 		 * TODO: Upper 4 bits of BSID are for chip version, but the
 		 * format is not known at this time so we don't know how to
 		 * specify eshi and eslo
 		 */

 		goto done;
 	}

 	/* Try PRR first, then hardcoded fallback */
 	np = of_find_compatible_node(NULL, NULL, "renesas,prr");
 	if (np) {
 		chipid = of_iomap(np, 0);
 		of_node_put(np);
 	} else if (soc->id && family->reg) {
 		chipid = ioremap(family->reg, 4);
 	}
 	if (chipid) {
 		product = readl(chipid);
 		iounmap(chipid);
 		/* R-Car M3-W ES1.1 incorrectly identifies as ES2.0 */
 		if ((product & 0x7fff) == 0x5210)
 			product ^= 0x11;
 		/* R-Car M3-W ES1.3 incorrectly identifies as ES2.1 */
 		if ((product & 0x7fff) == 0x5211)
 			product ^= 0x12;
 		if (soc->id && ((product >> 8) & 0xff) != soc->id) {
 			pr_warn("SoC mismatch (product = 0x%x)\n", product);
 			return -ENODEV;
 		}
 		eshi = ((product >> 4) & 0x0f) + 1;
 		eslo = product & 0xf;
 	}

 done:
 	soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
 	if (!soc_dev_attr)
 		return -ENOMEM;

 	np = of_find_node_by_path("/");
 	of_property_read_string(np, "model", &soc_dev_attr->machine);
 	of_node_put(np);

 	soc_dev_attr->family = kstrdup_const(family->name, GFP_KERNEL);
 	soc_dev_attr->soc_id = kstrdup_const(strchr(match->compatible, ',') + 1,
 					     GFP_KERNEL);
 	if (eshi)
 		soc_dev_attr->revision = kasprintf(GFP_KERNEL, "ES%u.%u", eshi,
 						   eslo);

 	pr_info("Detected Renesas %s %s %s\n", soc_dev_attr->family,
 		soc_dev_attr->soc_id, soc_dev_attr->revision ?: "");

 	soc_dev = soc_device_register(soc_dev_attr);
 	if (IS_ERR(soc_dev)) {
 		kfree(soc_dev_attr->revision);
 		kfree_const(soc_dev_attr->soc_id);
 		kfree_const(soc_dev_attr->family);
 		kfree(soc_dev_attr);
 		return PTR_ERR(soc_dev);
 	}

 	return 0;
 }
 early_initcall(renesas_soc_init);
	// SPDX-License-Identifier: GPL-2.0
	/*
	* Renesas SoC Identification
	*
	* Copyright (C) 2014-2016 Glider bvba
	*/

	#include <linux/io.h>
	#include <linux/of.h>
	#include <linux/of_address.h>
	#include <linux/slab.h>
	#include <linux/string.h>
	#include <linux/sys_soc.h>


	struct renesas_family {
	const char name[16];
	u32 reg; /* CCCR or PRR, if not in DT */
	};

	static const struct renesas_family fam_rcar_gen1 __initconst __maybe_unused = {
	.name = "R-Car Gen1",
	.reg = 0xff000044, /* PRR (Product Register) */
	};

	static const struct renesas_family fam_rcar_gen2 __initconst __maybe_unused = {
	.name = "R-Car Gen2",
	.reg = 0xff000044, /* PRR (Product Register) */
	};

	static const struct renesas_family fam_rcar_gen3 __initconst __maybe_unused = {
	.name = "R-Car Gen3",
	.reg = 0xfff00044, /* PRR (Product Register) */
	};

	static const struct renesas_family fam_rmobile __initconst __maybe_unused = {
	.name = "R-Mobile",
	.reg = 0xe600101c, /* CCCR (Common Chip Code Register) */
	};

	static const struct renesas_family fam_rza1 __initconst __maybe_unused = {
	.name = "RZ/A1",
	};

	static const struct renesas_family fam_rza2 __initconst __maybe_unused = {
	.name = "RZ/A2",
	};

	static const struct renesas_family fam_rzg1 __initconst __maybe_unused = {
	.name = "RZ/G1",
	.reg = 0xff000044, /* PRR (Product Register) */
	};

	static const struct renesas_family fam_rzg2 __initconst __maybe_unused = {
	.name = "RZ/G2",
	.reg = 0xfff00044, /* PRR (Product Register) */
	};

	static const struct renesas_family fam_shmobile __initconst __maybe_unused = {
	.name = "SH-Mobile",
	.reg = 0xe600101c, /* CCCR (Common Chip Code Register) */
	};


	struct renesas_soc {
	const struct renesas_family *family;
	u8 id;
	};

	static const struct renesas_soc soc_rz_a1h __initconst __maybe_unused = {
	.family = &fam_rza1,
	};

	static const struct renesas_soc soc_rz_a2m __initconst __maybe_unused = {
	.family = &fam_rza2,
	.id = 0x3b,
	};

	static const struct renesas_soc soc_rmobile_ape6 __initconst __maybe_unused = {
	.family = &fam_rmobile,
	.id = 0x3f,
	};

	static const struct renesas_soc soc_rmobile_a1 __initconst __maybe_unused = {
	.family = &fam_rmobile,
	.id = 0x40,
	};

	static const struct renesas_soc soc_rz_g1h __initconst __maybe_unused = {
	.family = &fam_rzg1,
	.id = 0x45,
	};

	static const struct renesas_soc soc_rz_g1m __initconst __maybe_unused = {
	.family = &fam_rzg1,
	.id = 0x47,
	};

	static const struct renesas_soc soc_rz_g1n __initconst __maybe_unused = {
	.family = &fam_rzg1,
	.id = 0x4b,
	};

	static const struct renesas_soc soc_rz_g1e __initconst __maybe_unused = {
	.family = &fam_rzg1,
	.id = 0x4c,
	};

	static const struct renesas_soc soc_rz_g1c __initconst __maybe_unused = {
	.family = &fam_rzg1,
	.id = 0x53,
	};

	static const struct renesas_soc soc_rz_g2m __initconst __maybe_unused = {
	.family = &fam_rzg2,
	.id = 0x52,
	};

	static const struct renesas_soc soc_rz_g2n __initconst __maybe_unused = {
	.family = &fam_rzg2,
	.id = 0x55,
	};

	static const struct renesas_soc soc_rz_g2e __initconst __maybe_unused = {
	.family = &fam_rzg2,
	.id = 0x57,
	};

	static const struct renesas_soc soc_rz_g2h __initconst __maybe_unused = {
	.family = &fam_rzg2,
	.id = 0x4f,
	};

	static const struct renesas_soc soc_rcar_m1a __initconst __maybe_unused = {
	.family = &fam_rcar_gen1,
	};

	static const struct renesas_soc soc_rcar_h1 __initconst __maybe_unused = {
	.family = &fam_rcar_gen1,
	.id = 0x3b,
	};

	static const struct renesas_soc soc_rcar_h2 __initconst __maybe_unused = {
	.family = &fam_rcar_gen2,
	.id = 0x45,
	};

	static const struct renesas_soc soc_rcar_m2_w __initconst __maybe_unused = {
	.family = &fam_rcar_gen2,
	.id = 0x47,
	};

	static const struct renesas_soc soc_rcar_v2h __initconst __maybe_unused = {
	.family = &fam_rcar_gen2,
	.id = 0x4a,
	};

	static const struct renesas_soc soc_rcar_m2_n __initconst __maybe_unused = {
	.family = &fam_rcar_gen2,
	.id = 0x4b,
	};

	static const struct renesas_soc soc_rcar_e2 __initconst __maybe_unused = {
	.family = &fam_rcar_gen2,
	.id = 0x4c,
	};

	static const struct renesas_soc soc_rcar_h3 __initconst __maybe_unused = {
	.family = &fam_rcar_gen3,
	.id = 0x4f,
	};

	static const struct renesas_soc soc_rcar_m3_w __initconst __maybe_unused = {
	.family = &fam_rcar_gen3,
	.id = 0x52,
	};

	static const struct renesas_soc soc_rcar_m3_n __initconst __maybe_unused = {
	.family = &fam_rcar_gen3,
	.id = 0x55,
	};

	static const struct renesas_soc soc_rcar_v3m __initconst __maybe_unused = {
	.family = &fam_rcar_gen3,
	.id = 0x54,
	};

	static const struct renesas_soc soc_rcar_v3h __initconst __maybe_unused = {
	.family = &fam_rcar_gen3,
	.id = 0x56,
	};

	static const struct renesas_soc soc_rcar_e3 __initconst __maybe_unused = {
	.family = &fam_rcar_gen3,
	.id = 0x57,
	};

	static const struct renesas_soc soc_rcar_d3 __initconst __maybe_unused = {
	.family = &fam_rcar_gen3,
	.id = 0x58,
	};

	static const struct renesas_soc soc_rcar_v3u __initconst __maybe_unused = {
	.family = &fam_rcar_gen3,
	.id = 0x59,
	};

	static const struct renesas_soc soc_shmobile_ag5 __initconst __maybe_unused = {
	.family = &fam_shmobile,
	.id = 0x37,
	};


	static const struct of_device_id renesas_socs[] __initconst = {
	#ifdef CONFIG_ARCH_R7S72100
	{ .compatible = "renesas,r7s72100", .data = &soc_rz_a1h },
	#endif
	#ifdef CONFIG_ARCH_R7S9210
	{ .compatible = "renesas,r7s9210", .data = &soc_rz_a2m },
	#endif
	#ifdef CONFIG_ARCH_R8A73A4
	{ .compatible = "renesas,r8a73a4", .data = &soc_rmobile_ape6 },
	#endif
	#ifdef CONFIG_ARCH_R8A7740
	{ .compatible = "renesas,r8a7740", .data = &soc_rmobile_a1 },
	#endif
	#ifdef CONFIG_ARCH_R8A7742
	{ .compatible = "renesas,r8a7742", .data = &soc_rz_g1h },
	#endif
	#ifdef CONFIG_ARCH_R8A7743
	{ .compatible = "renesas,r8a7743", .data = &soc_rz_g1m },
	#endif
	#ifdef CONFIG_ARCH_R8A7744
	{ .compatible = "renesas,r8a7744", .data = &soc_rz_g1n },
	#endif
	#ifdef CONFIG_ARCH_R8A7745
	{ .compatible = "renesas,r8a7745", .data = &soc_rz_g1e },
	#endif
	#ifdef CONFIG_ARCH_R8A77470
	{ .compatible = "renesas,r8a77470", .data = &soc_rz_g1c },
	#endif
	#ifdef CONFIG_ARCH_R8A774A1
	{ .compatible = "renesas,r8a774a1", .data = &soc_rz_g2m },
	#endif
	#ifdef CONFIG_ARCH_R8A774B1
	{ .compatible = "renesas,r8a774b1", .data = &soc_rz_g2n },
	#endif
	#ifdef CONFIG_ARCH_R8A774C0
	{ .compatible = "renesas,r8a774c0", .data = &soc_rz_g2e },
	#endif
	#ifdef CONFIG_ARCH_R8A774E1
	{ .compatible = "renesas,r8a774e1", .data = &soc_rz_g2h },
	#endif
	#ifdef CONFIG_ARCH_R8A7778
	{ .compatible = "renesas,r8a7778", .data = &soc_rcar_m1a },
	#endif
	#ifdef CONFIG_ARCH_R8A7779
	{ .compatible = "renesas,r8a7779", .data = &soc_rcar_h1 },
	#endif
	#ifdef CONFIG_ARCH_R8A7790
	{ .compatible = "renesas,r8a7790", .data = &soc_rcar_h2 },
	#endif
	#ifdef CONFIG_ARCH_R8A7791
	{ .compatible = "renesas,r8a7791", .data = &soc_rcar_m2_w },
	#endif
	#ifdef CONFIG_ARCH_R8A7792
	{ .compatible = "renesas,r8a7792", .data = &soc_rcar_v2h },
	#endif
	#ifdef CONFIG_ARCH_R8A7793
	{ .compatible = "renesas,r8a7793", .data = &soc_rcar_m2_n },
	#endif
	#ifdef CONFIG_ARCH_R8A7794
	{ .compatible = "renesas,r8a7794", .data = &soc_rcar_e2 },
	#endif
	#if defined(CONFIG_ARCH_R8A77950) \|\| defined(CONFIG_ARCH_R8A77951)
	{ .compatible = "renesas,r8a7795", .data = &soc_rcar_h3 },
	#endif
	#ifdef CONFIG_ARCH_R8A77960
	{ .compatible = "renesas,r8a7796", .data = &soc_rcar_m3_w },
	#endif
	#ifdef CONFIG_ARCH_R8A77961
	{ .compatible = "renesas,r8a77961", .data = &soc_rcar_m3_w },
	#endif
	#ifdef CONFIG_ARCH_R8A77965
	{ .compatible = "renesas,r8a77965", .data = &soc_rcar_m3_n },
	#endif
	#ifdef CONFIG_ARCH_R8A77970
	{ .compatible = "renesas,r8a77970", .data = &soc_rcar_v3m },
	#endif
	#ifdef CONFIG_ARCH_R8A77980
	{ .compatible = "renesas,r8a77980", .data = &soc_rcar_v3h },
	#endif
	#ifdef CONFIG_ARCH_R8A77990
	{ .compatible = "renesas,r8a77990", .data = &soc_rcar_e3 },
	#endif
	#ifdef CONFIG_ARCH_R8A77995
	{ .compatible = "renesas,r8a77995", .data = &soc_rcar_d3 },
	#endif
	#ifdef CONFIG_ARCH_R8A779A0
	{ .compatible = "renesas,r8a779a0", .data = &soc_rcar_v3u },
	#endif
	#ifdef CONFIG_ARCH_SH73A0
	{ .compatible = "renesas,sh73a0", .data = &soc_shmobile_ag5 },
	#endif
	{ /* sentinel */ }
	};

	static int __init renesas_soc_init(void)
	{
	struct soc_device_attribute *soc_dev_attr;
	const struct renesas_family *family;
	const struct of_device_id *match;
	const struct renesas_soc *soc;
	void __iomem *chipid = NULL;
	struct soc_device *soc_dev;
	struct device_node *np;
	unsigned int product, eshi = 0, eslo;

	match = of_match_node(renesas_socs, of_root);
	if (!match)
	return -ENODEV;

	soc = match->data;
	family = soc->family;

	np = of_find_compatible_node(NULL, NULL, "renesas,bsid");
	if (np) {
	chipid = of_iomap(np, 0);
	of_node_put(np);

	if (chipid) {
	product = readl(chipid);
	iounmap(chipid);

	if (soc->id && ((product >> 16) & 0xff) != soc->id) {
	pr_warn("SoC mismatch (product = 0x%x)\n",
	product);
	return -ENODEV;
	}
	}

	/*
	* TODO: Upper 4 bits of BSID are for chip version, but the
	* format is not known at this time so we don't know how to
	* specify eshi and eslo
	*/

	goto done;
	}

	/* Try PRR first, then hardcoded fallback */
	np = of_find_compatible_node(NULL, NULL, "renesas,prr");
	if (np) {
	chipid = of_iomap(np, 0);
	of_node_put(np);
	} else if (soc->id && family->reg) {
	chipid = ioremap(family->reg, 4);
	}
	if (chipid) {
	product = readl(chipid);
	iounmap(chipid);
	/* R-Car M3-W ES1.1 incorrectly identifies as ES2.0 */
	if ((product & 0x7fff) == 0x5210)
	product ^= 0x11;
	/* R-Car M3-W ES1.3 incorrectly identifies as ES2.1 */
	if ((product & 0x7fff) == 0x5211)
	product ^= 0x12;
	if (soc->id && ((product >> 8) & 0xff) != soc->id) {
	pr_warn("SoC mismatch (product = 0x%x)\n", product);
	return -ENODEV;
	}
	eshi = ((product >> 4) & 0x0f) + 1;
	eslo = product & 0xf;
	}

	done:
	soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
	if (!soc_dev_attr)
	return -ENOMEM;

	np = of_find_node_by_path("/");
	of_property_read_string(np, "model", &soc_dev_attr->machine);
	of_node_put(np);

	soc_dev_attr->family = kstrdup_const(family->name, GFP_KERNEL);
	soc_dev_attr->soc_id = kstrdup_const(strchr(match->compatible, ',') + 1,
	GFP_KERNEL);
	if (eshi)
	soc_dev_attr->revision = kasprintf(GFP_KERNEL, "ES%u.%u", eshi,
	eslo);

	pr_info("Detected Renesas %s %s %s\n", soc_dev_attr->family,
	soc_dev_attr->soc_id, soc_dev_attr->revision ?: "");

	soc_dev = soc_device_register(soc_dev_attr);
	if (IS_ERR(soc_dev)) {
	kfree(soc_dev_attr->revision);
	kfree_const(soc_dev_attr->soc_id);
	kfree_const(soc_dev_attr->family);
	kfree(soc_dev_attr);
	return PTR_ERR(soc_dev);
	}

	return 0;
	}
	early_initcall(renesas_soc_init);