[linux-2.6-block.git] / drivers / soc / renesas / renesas-soc.c

// 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_g2e __initconst __maybe_unused = {
	.family	= &fam_rzg2,
	.id	= 0x57,
};

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_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_R8A774C0
	{ .compatible = "renesas,r8a774c0",	.data = &soc_rz_g2e },
#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
#ifdef CONFIG_ARCH_R8A7795
	{ .compatible = "renesas,r8a7795",	.data = &soc_rcar_h3 },
#endif
#ifdef CONFIG_ARCH_R8A7796
	{ .compatible = "renesas,r8a7796",	.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_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) {
		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);
Commit	Line	Data
41c4567c	1	// SPDX-License-Identifier: GPL-2.0
8d6799a9 GU	2	/*
	3	* Renesas SoC Identification
	4	*
	5	* Copyright (C) 2014-2016 Glider bvba
8d6799a9 GU	6	*/
	7
	8	#include <linux/io.h>
	9	#include <linux/of.h>
	10	#include <linux/of_address.h>
	11	#include <linux/slab.h>
	12	#include <linux/string.h>
	13	#include <linux/sys_soc.h>
	14
	15
	16	struct renesas_family {
	17	const char name[16];
	18	u32 reg; /* CCCR or PRR, if not in DT */
	19	};
	20
	21	static const struct renesas_family fam_rcar_gen1 __initconst __maybe_unused = {
	22	.name = "R-Car Gen1",
	23	.reg = 0xff000044, /* PRR (Product Register) */
	24	};
	25
	26	static const struct renesas_family fam_rcar_gen2 __initconst __maybe_unused = {
	27	.name = "R-Car Gen2",
	28	.reg = 0xff000044, /* PRR (Product Register) */
	29	};
	30
	31	static const struct renesas_family fam_rcar_gen3 __initconst __maybe_unused = {
	32	.name = "R-Car Gen3",
	33	.reg = 0xfff00044, /* PRR (Product Register) */
	34	};
	35
	36	static const struct renesas_family fam_rmobile __initconst __maybe_unused = {
	37	.name = "R-Mobile",
	38	.reg = 0xe600101c, /* CCCR (Common Chip Code Register) */
	39	};
	40
175f435f CB	41	static const struct renesas_family fam_rza1 __initconst __maybe_unused = {
	42	.name = "RZ/A1",
	43	};
	44
	45	static const struct renesas_family fam_rza2 __initconst __maybe_unused = {
	46	.name = "RZ/A2",
8d6799a9 GU	47	};
8d6799a9 GU	48
2a4056a7 BD	49	static const struct renesas_family fam_rzg1 __initconst __maybe_unused = {
2a4056a7 BD	50	.name = "RZ/G1",
8d6799a9 GU	51	.reg = 0xff000044, /* PRR (Product Register) */
	52	};
	53
2a4056a7 BD	54	static const struct renesas_family fam_rzg2 __initconst __maybe_unused = {
	55	.name = "RZ/G2",
	56	.reg = 0xfff00044, /* PRR (Product Register) */
	57	};
	58
8d6799a9 GU	59	static const struct renesas_family fam_shmobile __initconst __maybe_unused = {
	60	.name = "SH-Mobile",
	61	.reg = 0xe600101c, /* CCCR (Common Chip Code Register) */
	62	};
	63
	64
	65	struct renesas_soc {
	66	const struct renesas_family *family;
	67	u8 id;
	68	};
	69
	70	static const struct renesas_soc soc_rz_a1h __initconst __maybe_unused = {
175f435f CB	71	.family = &fam_rza1,
	72	};
	73
	74	static const struct renesas_soc soc_rz_a2m __initconst __maybe_unused = {
	75	.family = &fam_rza2,
	76	.id = 0x3b,
8d6799a9 GU	77	};
	78
	79	static const struct renesas_soc soc_rmobile_ape6 __initconst __maybe_unused = {
	80	.family = &fam_rmobile,
	81	.id = 0x3f,
	82	};
	83
	84	static const struct renesas_soc soc_rmobile_a1 __initconst __maybe_unused = {
	85	.family = &fam_rmobile,
	86	.id = 0x40,
	87	};
	88
8848e1b1	89	static const struct renesas_soc soc_rz_g1h __initconst __maybe_unused = {
2a4056a7	90	.family = &fam_rzg1,
8848e1b1 GU	91	.id = 0x45,
	92	};
	93
8d6799a9	94	static const struct renesas_soc soc_rz_g1m __initconst __maybe_unused = {
2a4056a7	95	.family = &fam_rzg1,
8d6799a9 GU	96	.id = 0x47,
	97	};
	98
cd59de80	99	static const struct renesas_soc soc_rz_g1n __initconst __maybe_unused = {
2a4056a7	100	.family = &fam_rzg1,
cd59de80 GU	101	.id = 0x4b,
	102	};
	103
8d6799a9	104	static const struct renesas_soc soc_rz_g1e __initconst __maybe_unused = {
2a4056a7	105	.family = &fam_rzg1,
8d6799a9 GU	106	.id = 0x4c,
	107	};
	108
1daf13ba	109	static const struct renesas_soc soc_rz_g1c __initconst __maybe_unused = {
2a4056a7	110	.family = &fam_rzg1,
1daf13ba BD	111	.id = 0x53,
	112	};
	113
2a4056a7 BD	114	static const struct renesas_soc soc_rz_g2m __initconst __maybe_unused = {
	115	.family = &fam_rzg2,
	116	.id = 0x52,
	117	};
	118
2bab3d80 FC	119	static const struct renesas_soc soc_rz_g2e __initconst __maybe_unused = {
	120	.family = &fam_rzg2,
	121	.id = 0x57,
	122	};
	123
8d6799a9 GU	124	static const struct renesas_soc soc_rcar_m1a __initconst __maybe_unused = {
	125	.family = &fam_rcar_gen1,
	126	};
	127
	128	static const struct renesas_soc soc_rcar_h1 __initconst __maybe_unused = {
	129	.family = &fam_rcar_gen1,
	130	.id = 0x3b,
	131	};
	132
	133	static const struct renesas_soc soc_rcar_h2 __initconst __maybe_unused = {
	134	.family = &fam_rcar_gen2,
	135	.id = 0x45,
	136	};
	137
	138	static const struct renesas_soc soc_rcar_m2_w __initconst __maybe_unused = {
	139	.family = &fam_rcar_gen2,
	140	.id = 0x47,
	141	};
	142
	143	static const struct renesas_soc soc_rcar_v2h __initconst __maybe_unused = {
	144	.family = &fam_rcar_gen2,
	145	.id = 0x4a,
	146	};
	147
	148	static const struct renesas_soc soc_rcar_m2_n __initconst __maybe_unused = {
	149	.family = &fam_rcar_gen2,
	150	.id = 0x4b,
	151	};
	152
	153	static const struct renesas_soc soc_rcar_e2 __initconst __maybe_unused = {
	154	.family = &fam_rcar_gen2,
	155	.id = 0x4c,
	156	};
	157
	158	static const struct renesas_soc soc_rcar_h3 __initconst __maybe_unused = {
	159	.family = &fam_rcar_gen3,
	160	.id = 0x4f,
	161	};
	162
	163	static const struct renesas_soc soc_rcar_m3_w __initconst __maybe_unused = {
	164	.family = &fam_rcar_gen3,
	165	.id = 0x52,
	166	};
	167
bfd83983 JM	168	static const struct renesas_soc soc_rcar_m3_n __initconst __maybe_unused = {
	169	.family = &fam_rcar_gen3,
	170	.id = 0x55,
	171	};
	172
bb003075 SS	173	static const struct renesas_soc soc_rcar_v3m __initconst __maybe_unused = {
	174	.family = &fam_rcar_gen3,
	175	.id = 0x54,
	176	};
	177
8447756d SS	178	static const struct renesas_soc soc_rcar_v3h __initconst __maybe_unused = {
	179	.family = &fam_rcar_gen3,
	180	.id = 0x56,
	181	};
	182
44842d45 TK	183	static const struct renesas_soc soc_rcar_e3 __initconst __maybe_unused = {
	184	.family = &fam_rcar_gen3,
	185	.id = 0x57,
	186	};
	187
1b954784 GU	188	static const struct renesas_soc soc_rcar_d3 __initconst __maybe_unused = {
	189	.family = &fam_rcar_gen3,
	190	.id = 0x58,
	191	};
	192
8d6799a9 GU	193	static const struct renesas_soc soc_shmobile_ag5 __initconst __maybe_unused = {
	194	.family = &fam_shmobile,
	195	.id = 0x37,
	196	};
	197
	198
	199	static const struct of_device_id renesas_socs[] __initconst = {
	200	#ifdef CONFIG_ARCH_R7S72100
	201	{ .compatible = "renesas,r7s72100", .data = &soc_rz_a1h },
	202	#endif
175f435f CB	203	#ifdef CONFIG_ARCH_R7S9210
	204	{ .compatible = "renesas,r7s9210", .data = &soc_rz_a2m },
	205	#endif
8d6799a9 GU	206	#ifdef CONFIG_ARCH_R8A73A4
	207	{ .compatible = "renesas,r8a73a4", .data = &soc_rmobile_ape6 },
	208	#endif
	209	#ifdef CONFIG_ARCH_R8A7740
	210	{ .compatible = "renesas,r8a7740", .data = &soc_rmobile_a1 },
	211	#endif
8848e1b1 GU	212	#ifdef CONFIG_ARCH_R8A7742
	213	{ .compatible = "renesas,r8a7742", .data = &soc_rz_g1h },
	214	#endif
8d6799a9 GU	215	#ifdef CONFIG_ARCH_R8A7743
	216	{ .compatible = "renesas,r8a7743", .data = &soc_rz_g1m },
	217	#endif
cd59de80 GU	218	#ifdef CONFIG_ARCH_R8A7744
	219	{ .compatible = "renesas,r8a7744", .data = &soc_rz_g1n },
	220	#endif
8d6799a9 GU	221	#ifdef CONFIG_ARCH_R8A7745
	222	{ .compatible = "renesas,r8a7745", .data = &soc_rz_g1e },
	223	#endif
1daf13ba BD	224	#ifdef CONFIG_ARCH_R8A77470
	225	{ .compatible = "renesas,r8a77470", .data = &soc_rz_g1c },
	226	#endif
2a4056a7 BD	227	#ifdef CONFIG_ARCH_R8A774A1
	228	{ .compatible = "renesas,r8a774a1", .data = &soc_rz_g2m },
	229	#endif
2bab3d80 FC	230	#ifdef CONFIG_ARCH_R8A774C0
	231	{ .compatible = "renesas,r8a774c0", .data = &soc_rz_g2e },
	232	#endif
8d6799a9 GU	233	#ifdef CONFIG_ARCH_R8A7778
	234	{ .compatible = "renesas,r8a7778", .data = &soc_rcar_m1a },
	235	#endif
	236	#ifdef CONFIG_ARCH_R8A7779
	237	{ .compatible = "renesas,r8a7779", .data = &soc_rcar_h1 },
	238	#endif
	239	#ifdef CONFIG_ARCH_R8A7790
	240	{ .compatible = "renesas,r8a7790", .data = &soc_rcar_h2 },
	241	#endif
	242	#ifdef CONFIG_ARCH_R8A7791
	243	{ .compatible = "renesas,r8a7791", .data = &soc_rcar_m2_w },
	244	#endif
	245	#ifdef CONFIG_ARCH_R8A7792
	246	{ .compatible = "renesas,r8a7792", .data = &soc_rcar_v2h },
	247	#endif
	248	#ifdef CONFIG_ARCH_R8A7793
	249	{ .compatible = "renesas,r8a7793", .data = &soc_rcar_m2_n },
	250	#endif
	251	#ifdef CONFIG_ARCH_R8A7794
	252	{ .compatible = "renesas,r8a7794", .data = &soc_rcar_e2 },
	253	#endif
	254	#ifdef CONFIG_ARCH_R8A7795
	255	{ .compatible = "renesas,r8a7795", .data = &soc_rcar_h3 },
	256	#endif
	257	#ifdef CONFIG_ARCH_R8A7796
	258	{ .compatible = "renesas,r8a7796", .data = &soc_rcar_m3_w },
	259	#endif
bfd83983 JM	260	#ifdef CONFIG_ARCH_R8A77965
	261	{ .compatible = "renesas,r8a77965", .data = &soc_rcar_m3_n },
	262	#endif
bb003075 SS	263	#ifdef CONFIG_ARCH_R8A77970
	264	{ .compatible = "renesas,r8a77970", .data = &soc_rcar_v3m },
	265	#endif
8447756d SS	266	#ifdef CONFIG_ARCH_R8A77980
	267	{ .compatible = "renesas,r8a77980", .data = &soc_rcar_v3h },
	268	#endif
44842d45 TK	269	#ifdef CONFIG_ARCH_R8A77990
	270	{ .compatible = "renesas,r8a77990", .data = &soc_rcar_e3 },
	271	#endif
1b954784 GU	272	#ifdef CONFIG_ARCH_R8A77995
	273	{ .compatible = "renesas,r8a77995", .data = &soc_rcar_d3 },
	274	#endif
8d6799a9 GU	275	#ifdef CONFIG_ARCH_SH73A0
	276	{ .compatible = "renesas,sh73a0", .data = &soc_shmobile_ag5 },
	277	#endif
	278	{ /* sentinel */ }
	279	};
	280
	281	static int __init renesas_soc_init(void)
	282	{
	283	struct soc_device_attribute *soc_dev_attr;
	284	const struct renesas_family *family;
	285	const struct of_device_id *match;
	286	const struct renesas_soc *soc;
	287	void __iomem *chipid = NULL;
	288	struct soc_device *soc_dev;
	289	struct device_node *np;
175f435f	290	unsigned int product, eshi = 0, eslo;
8d6799a9 GU	291
	292	match = of_match_node(renesas_socs, of_root);
	293	if (!match)
	294	return -ENODEV;
	295
	296	soc = match->data;
	297	family = soc->family;
	298
175f435f CB	299	np = of_find_compatible_node(NULL, NULL, "renesas,bsid");
	300	if (np) {
	301	chipid = of_iomap(np, 0);
	302	of_node_put(np);
	303
	304	if (chipid) {
	305	product = readl(chipid);
	306	iounmap(chipid);
	307
	308	if (soc->id && ((product >> 16) & 0xff) != soc->id) {
	309	pr_warn("SoC mismatch (product = 0x%x)\n",
	310	product);
	311	return -ENODEV;
	312	}
	313	}
	314
	315	/*
	316	* TODO: Upper 4 bits of BSID are for chip version, but the
	317	* format is not known at this time so we don't know how to
	318	* specify eshi and eslo
	319	*/
	320
	321	goto done;
	322	}
	323
8d6799a9 GU	324	/* Try PRR first, then hardcoded fallback */
	325	np = of_find_compatible_node(NULL, NULL, "renesas,prr");
	326	if (np) {
	327	chipid = of_iomap(np, 0);
	328	of_node_put(np);
	329	} else if (soc->id) {
	330	chipid = ioremap(family->reg, 4);
	331	}
	332	if (chipid) {
	333	product = readl(chipid);
	334	iounmap(chipid);
90f0d2b3 GU	335	/* R-Car M3-W ES1.1 incorrectly identifies as ES2.0 */
	336	if ((product & 0x7fff) == 0x5210)
	337	product ^= 0x11;
15160f6d TK	338	/* R-Car M3-W ES1.3 incorrectly identifies as ES2.1 */
	339	if ((product & 0x7fff) == 0x5211)
	340	product ^= 0x12;
8d6799a9 GU	341	if (soc->id && ((product >> 8) & 0xff) != soc->id) {
	342	pr_warn("SoC mismatch (product = 0x%x)\n", product);
	343	return -ENODEV;
	344	}
175f435f CB	345	eshi = ((product >> 4) & 0x0f) + 1;
175f435f CB	346	eslo = product & 0xf;
8d6799a9 GU	347	}
8d6799a9 GU	348
175f435f	349	done:
8d6799a9 GU	350	soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
	351	if (!soc_dev_attr)
	352	return -ENOMEM;
	353
	354	np = of_find_node_by_path("/");
	355	of_property_read_string(np, "model", &soc_dev_attr->machine);
	356	of_node_put(np);
	357
	358	soc_dev_attr->family = kstrdup_const(family->name, GFP_KERNEL);
	359	soc_dev_attr->soc_id = kstrdup_const(strchr(match->compatible, ',') + 1,
	360	GFP_KERNEL);
175f435f CB	361	if (eshi)
	362	soc_dev_attr->revision = kasprintf(GFP_KERNEL, "ES%u.%u", eshi,
	363	eslo);
8d6799a9 GU	364
	365	pr_info("Detected Renesas %s %s %s\n", soc_dev_attr->family,
	366	soc_dev_attr->soc_id, soc_dev_attr->revision ?: "");
	367
	368	soc_dev = soc_device_register(soc_dev_attr);
	369	if (IS_ERR(soc_dev)) {
	370	kfree(soc_dev_attr->revision);
	371	kfree_const(soc_dev_attr->soc_id);
	372	kfree_const(soc_dev_attr->family);
	373	kfree(soc_dev_attr);
	374	return PTR_ERR(soc_dev);
	375	}
	376
	377	return 0;
	378	}
b1d134ba	379	early_initcall(renesas_soc_init);