| /* |
| * 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 <linux/io.h> |
| #include <linux/slab.h> |
| #include <linux/module.h> |
| #include <linux/of_fdt.h> |
| #include <linux/sys_soc.h> |
| #include <linux/of_address.h> |
| #include <linux/platform_device.h> |
| #include <linux/fsl/guts.h> |
| |
| 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); |