// SPDX-License-Identifier: GPL-2.0-or-later /* * Freescale QorIQ Platforms GUTS Driver * * Copyright (C) 2016 Freescale Semiconductor, Inc. */ #include #include #include #include #include #include #include #include struct fsl_soc_die_attr { char *die; u32 svr; u32 mask; }; struct fsl_soc_data { const char *sfp_compat; u32 uid_offset; }; /* SoC die attribute definition for QorIQ platform */ static const struct fsl_soc_die_attr fsl_soc_die[] = { /* * Power Architecture-based SoCs T Series */ /* Die: T4240, SoC: T4240/T4160/T4080 */ { .die = "T4240", .svr = 0x82400000, .mask = 0xfff00000, }, /* Die: T1040, SoC: T1040/T1020/T1042/T1022 */ { .die = "T1040", .svr = 0x85200000, .mask = 0xfff00000, }, /* Die: T2080, SoC: T2080/T2081 */ { .die = "T2080", .svr = 0x85300000, .mask = 0xfff00000, }, /* Die: T1024, SoC: T1024/T1014/T1023/T1013 */ { .die = "T1024", .svr = 0x85400000, .mask = 0xfff00000, }, /* * ARM-based SoCs LS Series */ /* Die: LS1043A, SoC: LS1043A/LS1023A */ { .die = "LS1043A", .svr = 0x87920000, .mask = 0xffff0000, }, /* Die: LS2080A, SoC: LS2080A/LS2040A/LS2085A */ { .die = "LS2080A", .svr = 0x87010000, .mask = 0xff3f0000, }, /* Die: LS1088A, SoC: LS1088A/LS1048A/LS1084A/LS1044A */ { .die = "LS1088A", .svr = 0x87030000, .mask = 0xff3f0000, }, /* Die: LS1012A, SoC: LS1012A */ { .die = "LS1012A", .svr = 0x87040000, .mask = 0xffff0000, }, /* Die: LS1046A, SoC: LS1046A/LS1026A */ { .die = "LS1046A", .svr = 0x87070000, .mask = 0xffff0000, }, /* Die: LS2088A, SoC: LS2088A/LS2048A/LS2084A/LS2044A */ { .die = "LS2088A", .svr = 0x87090000, .mask = 0xff3f0000, }, /* Die: LS1021A, SoC: LS1021A/LS1020A/LS1022A */ { .die = "LS1021A", .svr = 0x87000000, .mask = 0xfff70000, }, /* Die: LX2160A, SoC: LX2160A/LX2120A/LX2080A */ { .die = "LX2160A", .svr = 0x87360000, .mask = 0xff3f0000, }, /* Die: LS1028A, SoC: LS1028A */ { .die = "LS1028A", .svr = 0x870b0000, .mask = 0xff3f0000, }, { }, }; static const struct fsl_soc_die_attr *fsl_soc_die_match( u32 svr, const struct fsl_soc_die_attr *matches) { while (matches->svr) { if (matches->svr == (svr & matches->mask)) return matches; matches++; } return NULL; } static u64 fsl_guts_get_soc_uid(const char *compat, unsigned int offset) { struct device_node *np; void __iomem *sfp_base; u64 uid; np = of_find_compatible_node(NULL, NULL, compat); if (!np) return 0; sfp_base = of_iomap(np, 0); if (!sfp_base) { of_node_put(np); return 0; } uid = ioread32(sfp_base + offset); uid <<= 32; uid |= ioread32(sfp_base + offset + 4); iounmap(sfp_base); of_node_put(np); return uid; } static const struct fsl_soc_data ls1028a_data = { .sfp_compat = "fsl,ls1028a-sfp", .uid_offset = 0x21c, }; /* * Table for matching compatible strings, for device tree * guts node, for Freescale QorIQ SOCs. */ static const struct of_device_id fsl_guts_of_match[] = { { .compatible = "fsl,qoriq-device-config-1.0", }, { .compatible = "fsl,qoriq-device-config-2.0", }, { .compatible = "fsl,p1010-guts", }, { .compatible = "fsl,p1020-guts", }, { .compatible = "fsl,p1021-guts", }, { .compatible = "fsl,p1022-guts", }, { .compatible = "fsl,p1023-guts", }, { .compatible = "fsl,p2020-guts", }, { .compatible = "fsl,bsc9131-guts", }, { .compatible = "fsl,bsc9132-guts", }, { .compatible = "fsl,mpc8536-guts", }, { .compatible = "fsl,mpc8544-guts", }, { .compatible = "fsl,mpc8548-guts", }, { .compatible = "fsl,mpc8568-guts", }, { .compatible = "fsl,mpc8569-guts", }, { .compatible = "fsl,mpc8572-guts", }, { .compatible = "fsl,ls1021a-dcfg", }, { .compatible = "fsl,ls1043a-dcfg", }, { .compatible = "fsl,ls2080a-dcfg", }, { .compatible = "fsl,ls1088a-dcfg", }, { .compatible = "fsl,ls1012a-dcfg", }, { .compatible = "fsl,ls1046a-dcfg", }, { .compatible = "fsl,lx2160a-dcfg", }, { .compatible = "fsl,ls1028a-dcfg", .data = &ls1028a_data}, {} }; static int __init fsl_guts_init(void) { struct soc_device_attribute *soc_dev_attr; static struct soc_device *soc_dev; const struct fsl_soc_die_attr *soc_die; const struct fsl_soc_data *soc_data; const struct of_device_id *match; struct ccsr_guts __iomem *regs; const char *machine = NULL; struct device_node *np; bool little_endian; u64 soc_uid = 0; u32 svr; int ret; np = of_find_matching_node_and_match(NULL, fsl_guts_of_match, &match); if (!np) return 0; soc_data = match->data; regs = of_iomap(np, 0); if (!regs) { of_node_put(np); return -ENOMEM; } little_endian = of_property_read_bool(np, "little-endian"); if (little_endian) svr = ioread32(®s->svr); else svr = ioread32be(®s->svr); iounmap(regs); of_node_put(np); /* Register soc device */ soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); if (!soc_dev_attr) return -ENOMEM; if (of_property_read_string(of_root, "model", &machine)) of_property_read_string_index(of_root, "compatible", 0, &machine); if (machine) { soc_dev_attr->machine = kstrdup(machine, GFP_KERNEL); if (!soc_dev_attr->machine) goto err_nomem; } soc_die = fsl_soc_die_match(svr, fsl_soc_die); if (soc_die) { soc_dev_attr->family = kasprintf(GFP_KERNEL, "QorIQ %s", soc_die->die); } else { soc_dev_attr->family = kasprintf(GFP_KERNEL, "QorIQ"); } if (!soc_dev_attr->family) goto err_nomem; soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "svr:0x%08x", svr); if (!soc_dev_attr->soc_id) goto err_nomem; soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%d.%d", (svr >> 4) & 0xf, svr & 0xf); if (!soc_dev_attr->revision) goto err_nomem; if (soc_data) soc_uid = fsl_guts_get_soc_uid(soc_data->sfp_compat, soc_data->uid_offset); if (soc_uid) soc_dev_attr->serial_number = kasprintf(GFP_KERNEL, "%016llX", soc_uid); soc_dev = soc_device_register(soc_dev_attr); if (IS_ERR(soc_dev)) { ret = PTR_ERR(soc_dev); goto err; } pr_info("Machine: %s\n", soc_dev_attr->machine); pr_info("SoC family: %s\n", soc_dev_attr->family); pr_info("SoC ID: %s, Revision: %s\n", soc_dev_attr->soc_id, soc_dev_attr->revision); return 0; err_nomem: ret = -ENOMEM; err: kfree(soc_dev_attr->machine); kfree(soc_dev_attr->family); kfree(soc_dev_attr->soc_id); kfree(soc_dev_attr->revision); kfree(soc_dev_attr->serial_number); kfree(soc_dev_attr); return ret; } core_initcall(fsl_guts_init);