/* * Freescale QorIQ Platforms GUTS Driver * * Copyright (C) 2016 Freescale Semiconductor, Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #include #include #include #include #include #include #include #include struct guts { struct ccsr_guts __iomem *regs; bool little_endian; }; struct fsl_soc_die_attr { char *die; u32 svr; u32 mask; }; static struct guts *guts; static struct soc_device_attribute soc_dev_attr; static struct soc_device *soc_dev; /* 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, }, { }, }; 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; } u32 fsl_guts_get_svr(void) { u32 svr = 0; if (!guts || !guts->regs) return svr; if (guts->little_endian) svr = ioread32(&guts->regs->svr); else svr = ioread32be(&guts->regs->svr); return svr; } EXPORT_SYMBOL(fsl_guts_get_svr); static int fsl_guts_probe(struct platform_device *pdev) { struct device_node *root, *np = pdev->dev.of_node; struct device *dev = &pdev->dev; struct resource *res; const struct fsl_soc_die_attr *soc_die; const char *machine = NULL; u32 svr; /* Initialize guts */ guts = devm_kzalloc(dev, sizeof(*guts), GFP_KERNEL); if (!guts) return -ENOMEM; guts->little_endian = of_property_read_bool(np, "little-endian"); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); guts->regs = devm_ioremap_resource(dev, res); if (IS_ERR(guts->regs)) return PTR_ERR(guts->regs); /* Register soc device */ root = of_find_node_by_path("/"); if (of_property_read_string(root, "model", &machine)) of_property_read_string_index(root, "compatible", 0, &machine); of_node_put(root); if (machine) soc_dev_attr.machine = devm_kstrdup(dev, machine, GFP_KERNEL); svr = fsl_guts_get_svr(); soc_die = fsl_soc_die_match(svr, fsl_soc_die); if (soc_die) { soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL, "QorIQ %s", soc_die->die); } else { soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL, "QorIQ"); } if (!soc_dev_attr.family) return -ENOMEM; soc_dev_attr.soc_id = devm_kasprintf(dev, GFP_KERNEL, "svr:0x%08x", svr); if (!soc_dev_attr.soc_id) return -ENOMEM; soc_dev_attr.revision = devm_kasprintf(dev, GFP_KERNEL, "%d.%d", (svr >> 4) & 0xf, svr & 0xf); if (!soc_dev_attr.revision) return -ENOMEM; soc_dev = soc_device_register(&soc_dev_attr); if (IS_ERR(soc_dev)) return PTR_ERR(soc_dev); 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; } static int fsl_guts_remove(struct platform_device *dev) { soc_device_unregister(soc_dev); return 0; } /* * 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", }, {} }; MODULE_DEVICE_TABLE(of, fsl_guts_of_match); static struct platform_driver fsl_guts_driver = { .driver = { .name = "fsl-guts", .of_match_table = fsl_guts_of_match, }, .probe = fsl_guts_probe, .remove = fsl_guts_remove, }; static int __init fsl_guts_init(void) { return platform_driver_register(&fsl_guts_driver); } core_initcall(fsl_guts_init); static void __exit fsl_guts_exit(void) { platform_driver_unregister(&fsl_guts_driver); } module_exit(fsl_guts_exit);