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441 lines
11 KiB
441 lines
11 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* Renesas SoC Identification |
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* |
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* Copyright (C) 2014-2016 Glider bvba |
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*/ |
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#include <linux/io.h> |
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#include <linux/of.h> |
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#include <linux/of_address.h> |
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#include <linux/slab.h> |
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#include <linux/string.h> |
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#include <linux/sys_soc.h> |
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struct renesas_family { |
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const char name[16]; |
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u32 reg; /* CCCR or PRR, if not in DT */ |
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}; |
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static const struct renesas_family fam_rcar_gen1 __initconst __maybe_unused = { |
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.name = "R-Car Gen1", |
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.reg = 0xff000044, /* PRR (Product Register) */ |
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}; |
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static const struct renesas_family fam_rcar_gen2 __initconst __maybe_unused = { |
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.name = "R-Car Gen2", |
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.reg = 0xff000044, /* PRR (Product Register) */ |
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}; |
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static const struct renesas_family fam_rcar_gen3 __initconst __maybe_unused = { |
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.name = "R-Car Gen3", |
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.reg = 0xfff00044, /* PRR (Product Register) */ |
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}; |
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static const struct renesas_family fam_rmobile __initconst __maybe_unused = { |
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.name = "R-Mobile", |
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.reg = 0xe600101c, /* CCCR (Common Chip Code Register) */ |
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}; |
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static const struct renesas_family fam_rza1 __initconst __maybe_unused = { |
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.name = "RZ/A1", |
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}; |
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static const struct renesas_family fam_rza2 __initconst __maybe_unused = { |
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.name = "RZ/A2", |
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}; |
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static const struct renesas_family fam_rzg1 __initconst __maybe_unused = { |
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.name = "RZ/G1", |
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.reg = 0xff000044, /* PRR (Product Register) */ |
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}; |
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static const struct renesas_family fam_rzg2 __initconst __maybe_unused = { |
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.name = "RZ/G2", |
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.reg = 0xfff00044, /* PRR (Product Register) */ |
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}; |
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static const struct renesas_family fam_rzg2l __initconst __maybe_unused = { |
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.name = "RZ/G2L", |
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}; |
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static const struct renesas_family fam_shmobile __initconst __maybe_unused = { |
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.name = "SH-Mobile", |
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.reg = 0xe600101c, /* CCCR (Common Chip Code Register) */ |
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}; |
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struct renesas_soc { |
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const struct renesas_family *family; |
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u32 id; |
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}; |
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static const struct renesas_soc soc_rz_a1h __initconst __maybe_unused = { |
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.family = &fam_rza1, |
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}; |
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static const struct renesas_soc soc_rz_a2m __initconst __maybe_unused = { |
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.family = &fam_rza2, |
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.id = 0x3b, |
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}; |
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static const struct renesas_soc soc_rmobile_ape6 __initconst __maybe_unused = { |
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.family = &fam_rmobile, |
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.id = 0x3f, |
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}; |
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static const struct renesas_soc soc_rmobile_a1 __initconst __maybe_unused = { |
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.family = &fam_rmobile, |
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.id = 0x40, |
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}; |
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static const struct renesas_soc soc_rz_g1h __initconst __maybe_unused = { |
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.family = &fam_rzg1, |
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.id = 0x45, |
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}; |
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static const struct renesas_soc soc_rz_g1m __initconst __maybe_unused = { |
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.family = &fam_rzg1, |
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.id = 0x47, |
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}; |
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static const struct renesas_soc soc_rz_g1n __initconst __maybe_unused = { |
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.family = &fam_rzg1, |
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.id = 0x4b, |
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}; |
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static const struct renesas_soc soc_rz_g1e __initconst __maybe_unused = { |
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.family = &fam_rzg1, |
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.id = 0x4c, |
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}; |
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static const struct renesas_soc soc_rz_g1c __initconst __maybe_unused = { |
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.family = &fam_rzg1, |
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.id = 0x53, |
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}; |
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static const struct renesas_soc soc_rz_g2m __initconst __maybe_unused = { |
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.family = &fam_rzg2, |
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.id = 0x52, |
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}; |
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static const struct renesas_soc soc_rz_g2n __initconst __maybe_unused = { |
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.family = &fam_rzg2, |
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.id = 0x55, |
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}; |
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static const struct renesas_soc soc_rz_g2e __initconst __maybe_unused = { |
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.family = &fam_rzg2, |
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.id = 0x57, |
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}; |
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static const struct renesas_soc soc_rz_g2h __initconst __maybe_unused = { |
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.family = &fam_rzg2, |
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.id = 0x4f, |
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}; |
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static const struct renesas_soc soc_rz_g2l __initconst __maybe_unused = { |
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.family = &fam_rzg2l, |
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.id = 0x841c447, |
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}; |
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static const struct renesas_soc soc_rcar_m1a __initconst __maybe_unused = { |
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.family = &fam_rcar_gen1, |
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}; |
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static const struct renesas_soc soc_rcar_h1 __initconst __maybe_unused = { |
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.family = &fam_rcar_gen1, |
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.id = 0x3b, |
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}; |
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static const struct renesas_soc soc_rcar_h2 __initconst __maybe_unused = { |
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.family = &fam_rcar_gen2, |
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.id = 0x45, |
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}; |
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static const struct renesas_soc soc_rcar_m2_w __initconst __maybe_unused = { |
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.family = &fam_rcar_gen2, |
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.id = 0x47, |
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}; |
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static const struct renesas_soc soc_rcar_v2h __initconst __maybe_unused = { |
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.family = &fam_rcar_gen2, |
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.id = 0x4a, |
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}; |
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static const struct renesas_soc soc_rcar_m2_n __initconst __maybe_unused = { |
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.family = &fam_rcar_gen2, |
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.id = 0x4b, |
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}; |
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static const struct renesas_soc soc_rcar_e2 __initconst __maybe_unused = { |
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.family = &fam_rcar_gen2, |
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.id = 0x4c, |
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}; |
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static const struct renesas_soc soc_rcar_h3 __initconst __maybe_unused = { |
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.family = &fam_rcar_gen3, |
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.id = 0x4f, |
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}; |
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static const struct renesas_soc soc_rcar_m3_w __initconst __maybe_unused = { |
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.family = &fam_rcar_gen3, |
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.id = 0x52, |
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}; |
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static const struct renesas_soc soc_rcar_m3_n __initconst __maybe_unused = { |
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.family = &fam_rcar_gen3, |
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.id = 0x55, |
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}; |
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static const struct renesas_soc soc_rcar_v3m __initconst __maybe_unused = { |
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.family = &fam_rcar_gen3, |
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.id = 0x54, |
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}; |
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static const struct renesas_soc soc_rcar_v3h __initconst __maybe_unused = { |
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.family = &fam_rcar_gen3, |
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.id = 0x56, |
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}; |
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static const struct renesas_soc soc_rcar_e3 __initconst __maybe_unused = { |
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.family = &fam_rcar_gen3, |
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.id = 0x57, |
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}; |
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static const struct renesas_soc soc_rcar_d3 __initconst __maybe_unused = { |
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.family = &fam_rcar_gen3, |
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.id = 0x58, |
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}; |
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static const struct renesas_soc soc_rcar_v3u __initconst __maybe_unused = { |
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.family = &fam_rcar_gen3, |
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.id = 0x59, |
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}; |
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static const struct renesas_soc soc_shmobile_ag5 __initconst __maybe_unused = { |
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.family = &fam_shmobile, |
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.id = 0x37, |
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}; |
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static const struct of_device_id renesas_socs[] __initconst = { |
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#ifdef CONFIG_ARCH_R7S72100 |
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{ .compatible = "renesas,r7s72100", .data = &soc_rz_a1h }, |
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#endif |
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#ifdef CONFIG_ARCH_R7S9210 |
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{ .compatible = "renesas,r7s9210", .data = &soc_rz_a2m }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A73A4 |
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{ .compatible = "renesas,r8a73a4", .data = &soc_rmobile_ape6 }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A7740 |
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{ .compatible = "renesas,r8a7740", .data = &soc_rmobile_a1 }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A7742 |
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{ .compatible = "renesas,r8a7742", .data = &soc_rz_g1h }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A7743 |
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{ .compatible = "renesas,r8a7743", .data = &soc_rz_g1m }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A7744 |
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{ .compatible = "renesas,r8a7744", .data = &soc_rz_g1n }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A7745 |
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{ .compatible = "renesas,r8a7745", .data = &soc_rz_g1e }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A77470 |
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{ .compatible = "renesas,r8a77470", .data = &soc_rz_g1c }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A774A1 |
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{ .compatible = "renesas,r8a774a1", .data = &soc_rz_g2m }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A774B1 |
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{ .compatible = "renesas,r8a774b1", .data = &soc_rz_g2n }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A774C0 |
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{ .compatible = "renesas,r8a774c0", .data = &soc_rz_g2e }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A774E1 |
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{ .compatible = "renesas,r8a774e1", .data = &soc_rz_g2h }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A7778 |
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{ .compatible = "renesas,r8a7778", .data = &soc_rcar_m1a }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A7779 |
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{ .compatible = "renesas,r8a7779", .data = &soc_rcar_h1 }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A7790 |
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{ .compatible = "renesas,r8a7790", .data = &soc_rcar_h2 }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A7791 |
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{ .compatible = "renesas,r8a7791", .data = &soc_rcar_m2_w }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A7792 |
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{ .compatible = "renesas,r8a7792", .data = &soc_rcar_v2h }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A7793 |
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{ .compatible = "renesas,r8a7793", .data = &soc_rcar_m2_n }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A7794 |
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{ .compatible = "renesas,r8a7794", .data = &soc_rcar_e2 }, |
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#endif |
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#if defined(CONFIG_ARCH_R8A77950) || defined(CONFIG_ARCH_R8A77951) |
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{ .compatible = "renesas,r8a7795", .data = &soc_rcar_h3 }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A77951 |
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{ .compatible = "renesas,r8a779m1", .data = &soc_rcar_h3 }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A77960 |
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{ .compatible = "renesas,r8a7796", .data = &soc_rcar_m3_w }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A77961 |
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{ .compatible = "renesas,r8a77961", .data = &soc_rcar_m3_w }, |
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{ .compatible = "renesas,r8a779m3", .data = &soc_rcar_m3_w }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A77965 |
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{ .compatible = "renesas,r8a77965", .data = &soc_rcar_m3_n }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A77970 |
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{ .compatible = "renesas,r8a77970", .data = &soc_rcar_v3m }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A77980 |
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{ .compatible = "renesas,r8a77980", .data = &soc_rcar_v3h }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A77990 |
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{ .compatible = "renesas,r8a77990", .data = &soc_rcar_e3 }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A77995 |
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{ .compatible = "renesas,r8a77995", .data = &soc_rcar_d3 }, |
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#endif |
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#ifdef CONFIG_ARCH_R8A779A0 |
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{ .compatible = "renesas,r8a779a0", .data = &soc_rcar_v3u }, |
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#endif |
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#if defined(CONFIG_ARCH_R9A07G044) |
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{ .compatible = "renesas,r9a07g044", .data = &soc_rz_g2l }, |
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#endif |
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#ifdef CONFIG_ARCH_SH73A0 |
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{ .compatible = "renesas,sh73a0", .data = &soc_shmobile_ag5 }, |
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#endif |
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{ /* sentinel */ } |
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}; |
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static int __init renesas_soc_init(void) |
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{ |
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struct soc_device_attribute *soc_dev_attr; |
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const struct renesas_family *family; |
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const struct of_device_id *match; |
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const struct renesas_soc *soc; |
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void __iomem *chipid = NULL; |
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struct soc_device *soc_dev; |
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struct device_node *np; |
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unsigned int product, eshi = 0, eslo; |
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match = of_match_node(renesas_socs, of_root); |
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if (!match) |
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return -ENODEV; |
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soc = match->data; |
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family = soc->family; |
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np = of_find_compatible_node(NULL, NULL, "renesas,bsid"); |
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if (np) { |
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chipid = of_iomap(np, 0); |
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of_node_put(np); |
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if (chipid) { |
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product = readl(chipid); |
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iounmap(chipid); |
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if (soc->id && ((product >> 16) & 0xff) != soc->id) { |
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pr_warn("SoC mismatch (product = 0x%x)\n", |
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product); |
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return -ENODEV; |
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} |
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} |
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/* |
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* TODO: Upper 4 bits of BSID are for chip version, but the |
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* format is not known at this time so we don't know how to |
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* specify eshi and eslo |
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*/ |
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goto done; |
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} |
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np = of_find_compatible_node(NULL, NULL, "renesas,r9a07g044-sysc"); |
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if (np) { |
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chipid = of_iomap(np, 0); |
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of_node_put(np); |
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if (chipid) { |
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product = readl(chipid + 0x0a04); |
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iounmap(chipid); |
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if (soc->id && (product & 0xfffffff) != soc->id) { |
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pr_warn("SoC mismatch (product = 0x%x)\n", |
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product); |
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return -ENODEV; |
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} |
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} |
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goto done; |
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} |
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/* Try PRR first, then hardcoded fallback */ |
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np = of_find_compatible_node(NULL, NULL, "renesas,prr"); |
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if (np) { |
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chipid = of_iomap(np, 0); |
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of_node_put(np); |
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} else if (soc->id && family->reg) { |
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chipid = ioremap(family->reg, 4); |
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} |
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if (chipid) { |
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product = readl(chipid); |
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iounmap(chipid); |
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/* R-Car M3-W ES1.1 incorrectly identifies as ES2.0 */ |
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if ((product & 0x7fff) == 0x5210) |
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product ^= 0x11; |
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/* R-Car M3-W ES1.3 incorrectly identifies as ES2.1 */ |
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if ((product & 0x7fff) == 0x5211) |
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product ^= 0x12; |
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if (soc->id && ((product >> 8) & 0xff) != soc->id) { |
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pr_warn("SoC mismatch (product = 0x%x)\n", product); |
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return -ENODEV; |
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} |
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eshi = ((product >> 4) & 0x0f) + 1; |
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eslo = product & 0xf; |
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} |
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done: |
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soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); |
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if (!soc_dev_attr) |
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return -ENOMEM; |
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np = of_find_node_by_path("/"); |
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of_property_read_string(np, "model", &soc_dev_attr->machine); |
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of_node_put(np); |
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soc_dev_attr->family = kstrdup_const(family->name, GFP_KERNEL); |
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soc_dev_attr->soc_id = kstrdup_const(strchr(match->compatible, ',') + 1, |
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GFP_KERNEL); |
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if (eshi) |
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soc_dev_attr->revision = kasprintf(GFP_KERNEL, "ES%u.%u", eshi, |
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eslo); |
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pr_info("Detected Renesas %s %s %s\n", soc_dev_attr->family, |
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soc_dev_attr->soc_id, soc_dev_attr->revision ?: ""); |
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soc_dev = soc_device_register(soc_dev_attr); |
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if (IS_ERR(soc_dev)) { |
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kfree(soc_dev_attr->revision); |
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kfree_const(soc_dev_attr->soc_id); |
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kfree_const(soc_dev_attr->family); |
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kfree(soc_dev_attr); |
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return PTR_ERR(soc_dev); |
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} |
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return 0; |
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} |
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early_initcall(renesas_soc_init);
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