// 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_rcar_gen4 __initconst __maybe_unused = {
.name = "R-Car Gen4",
};
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_rzfive __initconst __maybe_unused = {
.name = "RZ/Five",
};
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_rzg2l __initconst __maybe_unused = {
.name = "RZ/G2L",
};
static const struct renesas_family fam_rzg2ul __initconst __maybe_unused = {
.name = "RZ/G2UL",
};
static const struct renesas_family fam_rzg3s __initconst __maybe_unused = {
.name = "RZ/G3S",
};
static const struct renesas_family fam_rzv2h __initconst __maybe_unused = {
.name = "RZ/V2H",
};
static const struct renesas_family fam_rzv2l __initconst __maybe_unused = {
.name = "RZ/V2L",
};
static const struct renesas_family fam_rzv2m __initconst __maybe_unused = {
.name = "RZ/V2M",
};
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;
u32 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_five __initconst __maybe_unused = {
.family = &fam_rzfive,
.id = 0x847c447,
};
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_rz_g2l __initconst __maybe_unused = {
.family = &fam_rzg2l,
.id = 0x841c447,
};
static const struct renesas_soc soc_rz_g2ul __initconst __maybe_unused = {
.family = &fam_rzg2ul,
.id = 0x8450447,
};
static const struct renesas_soc soc_rz_g3s __initconst __maybe_unused = {
.family = &fam_rzg3s,
.id = 0x85e0447,
};
static const struct renesas_soc soc_rz_v2h __initconst __maybe_unused = {
.family = &fam_rzv2h,
.id = 0x847a447,
};
static const struct renesas_soc soc_rz_v2l __initconst __maybe_unused = {
.family = &fam_rzv2l,
.id = 0x8447447,
};
static const struct renesas_soc soc_rz_v2m __initconst __maybe_unused = {
.family = &fam_rzv2m,
};
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_gen4,
.id = 0x59,
};
static const struct renesas_soc soc_rcar_s4 __initconst __maybe_unused = {
.family = &fam_rcar_gen4,
.id = 0x5a,
};
static const struct renesas_soc soc_rcar_v4h __initconst __maybe_unused = {
.family = &fam_rcar_gen4,
.id = 0x5c,
};
static const struct renesas_soc soc_rcar_v4m __initconst __maybe_unused = {
.family = &fam_rcar_gen4,
.id = 0x5d,
};
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 __maybe_unused = {
#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
#ifdef CONFIG_ARCH_R8A77951
{ .compatible = "renesas,r8a7795", .data = &soc_rcar_h3 },
{ .compatible = "renesas,r8a779m0", .data = &soc_rcar_h3 },
{ .compatible = "renesas,r8a779m1", .data = &soc_rcar_h3 },
{ .compatible = "renesas,r8a779m8", .data = &soc_rcar_h3 },
{ .compatible = "renesas,r8a779mb", .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 },
{ .compatible = "renesas,r8a779m2", .data = &soc_rcar_m3_w },
{ .compatible = "renesas,r8a779m3", .data = &soc_rcar_m3_w },
#endif
#ifdef CONFIG_ARCH_R8A77965
{ .compatible = "renesas,r8a77965", .data = &soc_rcar_m3_n },
{ .compatible = "renesas,r8a779m4", .data = &soc_rcar_m3_n },
{ .compatible = "renesas,r8a779m5", .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 },
{ .compatible = "renesas,r8a779m6", .data = &soc_rcar_e3 },
#endif
#ifdef CONFIG_ARCH_R8A77995
{ .compatible = "renesas,r8a77995", .data = &soc_rcar_d3 },
{ .compatible = "renesas,r8a779m7", .data = &soc_rcar_d3 },
#endif
#ifdef CONFIG_ARCH_R8A779A0
{ .compatible = "renesas,r8a779a0", .data = &soc_rcar_v3u },
#endif
#ifdef CONFIG_ARCH_R8A779F0
{ .compatible = "renesas,r8a779f0", .data = &soc_rcar_s4 },
#endif
#ifdef CONFIG_ARCH_R8A779G0
{ .compatible = "renesas,r8a779g0", .data = &soc_rcar_v4h },
#endif
#ifdef CONFIG_ARCH_R8A779H0
{ .compatible = "renesas,r8a779h0", .data = &soc_rcar_v4m },
#endif
#ifdef CONFIG_ARCH_R9A07G043
#ifdef CONFIG_RISCV
{ .compatible = "renesas,r9a07g043", .data = &soc_rz_five },
#else
{ .compatible = "renesas,r9a07g043", .data = &soc_rz_g2ul },
#endif
#endif
#ifdef CONFIG_ARCH_R9A07G044
{ .compatible = "renesas,r9a07g044", .data = &soc_rz_g2l },
#endif
#ifdef CONFIG_ARCH_R9A07G054
{ .compatible = "renesas,r9a07g054", .data = &soc_rz_v2l },
#endif
#ifdef CONFIG_ARCH_R9A08G045
{ .compatible = "renesas,r9a08g045", .data = &soc_rz_g3s },
#endif
#ifdef CONFIG_ARCH_R9A09G011
{ .compatible = "renesas,r9a09g011", .data = &soc_rz_v2m },
#endif
#ifdef CONFIG_ARCH_R9A09G057
{ .compatible = "renesas,r9a09g057", .data = &soc_rz_v2h },
#endif
#ifdef CONFIG_ARCH_SH73A0
{ .compatible = "renesas,sh73a0", .data = &soc_shmobile_ag5 },
#endif
{ /* sentinel */ }
};
struct renesas_id {
unsigned int offset;
u32 mask;
};
static const struct renesas_id id_bsid __initconst = {
.offset = 0,
.mask = 0xff0000,
/*
* 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
*/
};
static const struct renesas_id id_rzg2l __initconst = {
.offset = 0xa04,
.mask = 0xfffffff,
};
static const struct renesas_id id_rzv2h __initconst = {
.offset = 0x304,
.mask = 0xfffffff,
};
static const struct renesas_id id_rzv2m __initconst = {
.offset = 0x104,
.mask = 0xff,
};
static const struct renesas_id id_prr __initconst = {
.offset = 0,
.mask = 0xff00,
};
static const struct of_device_id renesas_ids[] __initconst = {
{ .compatible = "renesas,bsid", .data = &id_bsid },
{ .compatible = "renesas,r9a07g043-sysc", .data = &id_rzg2l },
{ .compatible = "renesas,r9a07g044-sysc", .data = &id_rzg2l },
{ .compatible = "renesas,r9a07g054-sysc", .data = &id_rzg2l },
{ .compatible = "renesas,r9a08g045-sysc", .data = &id_rzg2l },
{ .compatible = "renesas,r9a09g011-sys", .data = &id_rzv2m },
{ .compatible = "renesas,r9a09g057-sys", .data = &id_rzv2h },
{ .compatible = "renesas,prr", .data = &id_prr },
{ /* sentinel */ }
};
static int __init renesas_soc_init(void)
{
struct soc_device_attribute *soc_dev_attr;
unsigned int product, eshi = 0, eslo;
const struct renesas_family *family;
const struct of_device_id *match;
const struct renesas_soc *soc;
const struct renesas_id *id;
void __iomem *chipid = NULL;
const char *rev_prefix = "";
struct soc_device *soc_dev;
struct device_node *np;
const char *soc_id;
int ret;
match = of_match_node(renesas_socs, of_root);
if (!match)
return -ENODEV;
soc_id = strchr(match->compatible, ',') + 1;
soc = match->data;
family = soc->family;
np = of_find_matching_node_and_match(NULL, renesas_ids, &match);
if (np) {
id = match->data;
chipid = of_iomap(np, 0);
of_node_put(np);
} else if (soc->id && family->reg) {
/* Try hardcoded CCCR/PRR fallback */
id = &id_prr;
chipid = ioremap(family->reg, 4);
}
soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
if (!soc_dev_attr) {
if (chipid)
iounmap(chipid);
return -ENOMEM;
}
soc_dev_attr->family = kstrdup_const(family->name, GFP_KERNEL);
soc_dev_attr->soc_id = kstrdup_const(soc_id, GFP_KERNEL);
if (chipid) {
product = readl(chipid + id->offset);
iounmap(chipid);
if (id == &id_prr) {
/* 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;
eshi = ((product >> 4) & 0x0f) + 1;
eslo = product & 0xf;
soc_dev_attr->revision = kasprintf(GFP_KERNEL, "ES%u.%u",
eshi, eslo);
} else if (id == &id_rzg2l || id == &id_rzv2h) {
eshi = ((product >> 28) & 0x0f);
soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%u",
eshi);
rev_prefix = "Rev ";
} else if (id == &id_rzv2m) {
eshi = ((product >> 4) & 0x0f);
eslo = product & 0xf;
soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%u.%u",
eshi, eslo);
}
if (soc->id &&
((product & id->mask) >> __ffs(id->mask)) != soc->id) {
pr_warn("SoC mismatch (product = 0x%x)\n", product);
ret = -ENODEV;
goto free_soc_dev_attr;
}
}
pr_info("Detected Renesas %s %s %s%s\n", soc_dev_attr->family,
soc_dev_attr->soc_id, rev_prefix, soc_dev_attr->revision ?: "");
soc_dev = soc_device_register(soc_dev_attr);
if (IS_ERR(soc_dev)) {
ret = PTR_ERR(soc_dev);
goto free_soc_dev_attr;
}
return 0;
free_soc_dev_attr:
kfree(soc_dev_attr->revision);
kfree_const(soc_dev_attr->soc_id);
kfree_const(soc_dev_attr->family);
kfree(soc_dev_attr);
return ret;
}
early_initcall(renesas_soc_init);
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