520 lines
14 KiB
C
520 lines
14 KiB
C
// 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_rcar_gen4 __initconst __maybe_unused = {
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.name = "R-Car Gen4",
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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_rzfive __initconst __maybe_unused = {
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.name = "RZ/Five",
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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_rzg2ul __initconst __maybe_unused = {
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.name = "RZ/G2UL",
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};
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static const struct renesas_family fam_rzv2l __initconst __maybe_unused = {
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.name = "RZ/V2L",
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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_five __initconst __maybe_unused = {
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.family = &fam_rzfive,
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.id = 0x847c447,
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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_rz_g2ul __initconst __maybe_unused = {
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.family = &fam_rzg2ul,
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.id = 0x8450447,
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};
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static const struct renesas_soc soc_rz_v2l __initconst __maybe_unused = {
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.family = &fam_rzv2l,
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.id = 0x8447447,
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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_gen4,
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.id = 0x59,
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};
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static const struct renesas_soc soc_rcar_s4 __initconst __maybe_unused = {
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.family = &fam_rcar_gen4,
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.id = 0x5a,
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};
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static const struct renesas_soc soc_rcar_v4h __initconst __maybe_unused = {
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.family = &fam_rcar_gen4,
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.id = 0x5c,
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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,r8a779m0", .data = &soc_rcar_h3 },
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{ .compatible = "renesas,r8a779m1", .data = &soc_rcar_h3 },
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{ .compatible = "renesas,r8a779m8", .data = &soc_rcar_h3 },
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{ .compatible = "renesas,r8a779mb", .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,r8a779m2", .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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{ .compatible = "renesas,r8a779m4", .data = &soc_rcar_m3_n },
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{ .compatible = "renesas,r8a779m5", .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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{ .compatible = "renesas,r8a779m6", .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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{ .compatible = "renesas,r8a779m7", .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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#ifdef CONFIG_ARCH_R8A779F0
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{ .compatible = "renesas,r8a779f0", .data = &soc_rcar_s4 },
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#endif
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#ifdef CONFIG_ARCH_R8A779G0
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{ .compatible = "renesas,r8a779g0", .data = &soc_rcar_v4h },
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#endif
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#if defined(CONFIG_ARCH_R9A07G043)
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#ifdef CONFIG_RISCV
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{ .compatible = "renesas,r9a07g043", .data = &soc_rz_five },
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#else
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{ .compatible = "renesas,r9a07g043", .data = &soc_rz_g2ul },
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#endif
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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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#if defined(CONFIG_ARCH_R9A07G054)
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{ .compatible = "renesas,r9a07g054", .data = &soc_rz_v2l },
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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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struct renesas_id {
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unsigned int offset;
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u32 mask;
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};
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static const struct renesas_id id_bsid __initconst = {
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.offset = 0,
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.mask = 0xff0000,
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/*
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* TODO: Upper 4 bits of BSID are for chip version, but the format is
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* not known at this time so we don't know how to specify eshi and eslo
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*/
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};
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static const struct renesas_id id_rzg2l __initconst = {
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.offset = 0xa04,
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.mask = 0xfffffff,
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};
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static const struct renesas_id id_prr __initconst = {
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.offset = 0,
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.mask = 0xff00,
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};
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static const struct of_device_id renesas_ids[] __initconst = {
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{ .compatible = "renesas,bsid", .data = &id_bsid },
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{ .compatible = "renesas,r9a07g043-sysc", .data = &id_rzg2l },
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{ .compatible = "renesas,r9a07g044-sysc", .data = &id_rzg2l },
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{ .compatible = "renesas,r9a07g054-sysc", .data = &id_rzg2l },
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{ .compatible = "renesas,prr", .data = &id_prr },
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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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unsigned int product, eshi = 0, eslo;
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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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const struct renesas_id *id;
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void __iomem *chipid = NULL;
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const char *rev_prefix = "";
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struct soc_device *soc_dev;
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struct device_node *np;
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const char *soc_id;
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int ret;
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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_id = strchr(match->compatible, ',') + 1;
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soc = match->data;
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family = soc->family;
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np = of_find_matching_node_and_match(NULL, renesas_ids, &match);
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if (np) {
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id = match->data;
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chipid = of_iomap(np, 0);
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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;
|
|
}
|
|
|
|
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(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) {
|
|
eshi = ((product >> 28) & 0x0f);
|
|
soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%u",
|
|
eshi);
|
|
rev_prefix = "Rev ";
|
|
}
|
|
|
|
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);
|