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256 lines
6.2 KiB
256 lines
6.2 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Freescale QorIQ Platforms GUTS Driver |
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* |
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* Copyright (C) 2016 Freescale Semiconductor, Inc. |
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*/ |
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#include <linux/io.h> |
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#include <linux/slab.h> |
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#include <linux/module.h> |
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#include <linux/of_fdt.h> |
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#include <linux/sys_soc.h> |
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#include <linux/of_address.h> |
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#include <linux/platform_device.h> |
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#include <linux/fsl/guts.h> |
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struct guts { |
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struct ccsr_guts __iomem *regs; |
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bool little_endian; |
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}; |
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struct fsl_soc_die_attr { |
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char *die; |
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u32 svr; |
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u32 mask; |
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}; |
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static struct guts *guts; |
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static struct soc_device_attribute soc_dev_attr; |
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static struct soc_device *soc_dev; |
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static struct device_node *root; |
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/* SoC die attribute definition for QorIQ platform */ |
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static const struct fsl_soc_die_attr fsl_soc_die[] = { |
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/* |
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* Power Architecture-based SoCs T Series |
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*/ |
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/* Die: T4240, SoC: T4240/T4160/T4080 */ |
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{ .die = "T4240", |
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.svr = 0x82400000, |
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.mask = 0xfff00000, |
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}, |
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/* Die: T1040, SoC: T1040/T1020/T1042/T1022 */ |
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{ .die = "T1040", |
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.svr = 0x85200000, |
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.mask = 0xfff00000, |
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}, |
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/* Die: T2080, SoC: T2080/T2081 */ |
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{ .die = "T2080", |
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.svr = 0x85300000, |
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.mask = 0xfff00000, |
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}, |
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/* Die: T1024, SoC: T1024/T1014/T1023/T1013 */ |
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{ .die = "T1024", |
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.svr = 0x85400000, |
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.mask = 0xfff00000, |
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}, |
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/* |
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* ARM-based SoCs LS Series |
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*/ |
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/* Die: LS1043A, SoC: LS1043A/LS1023A */ |
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{ .die = "LS1043A", |
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.svr = 0x87920000, |
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.mask = 0xffff0000, |
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}, |
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/* Die: LS2080A, SoC: LS2080A/LS2040A/LS2085A */ |
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{ .die = "LS2080A", |
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.svr = 0x87010000, |
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.mask = 0xff3f0000, |
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}, |
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/* Die: LS1088A, SoC: LS1088A/LS1048A/LS1084A/LS1044A */ |
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{ .die = "LS1088A", |
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.svr = 0x87030000, |
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.mask = 0xff3f0000, |
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}, |
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/* Die: LS1012A, SoC: LS1012A */ |
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{ .die = "LS1012A", |
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.svr = 0x87040000, |
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.mask = 0xffff0000, |
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}, |
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/* Die: LS1046A, SoC: LS1046A/LS1026A */ |
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{ .die = "LS1046A", |
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.svr = 0x87070000, |
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.mask = 0xffff0000, |
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}, |
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/* Die: LS2088A, SoC: LS2088A/LS2048A/LS2084A/LS2044A */ |
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{ .die = "LS2088A", |
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.svr = 0x87090000, |
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.mask = 0xff3f0000, |
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}, |
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/* Die: LS1021A, SoC: LS1021A/LS1020A/LS1022A */ |
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{ .die = "LS1021A", |
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.svr = 0x87000000, |
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.mask = 0xfff70000, |
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}, |
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/* Die: LX2160A, SoC: LX2160A/LX2120A/LX2080A */ |
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{ .die = "LX2160A", |
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.svr = 0x87360000, |
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.mask = 0xff3f0000, |
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}, |
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/* Die: LS1028A, SoC: LS1028A */ |
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{ .die = "LS1028A", |
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.svr = 0x870b0000, |
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.mask = 0xff3f0000, |
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}, |
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{ }, |
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}; |
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static const struct fsl_soc_die_attr *fsl_soc_die_match( |
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u32 svr, const struct fsl_soc_die_attr *matches) |
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{ |
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while (matches->svr) { |
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if (matches->svr == (svr & matches->mask)) |
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return matches; |
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matches++; |
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}; |
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return NULL; |
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} |
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static u32 fsl_guts_get_svr(void) |
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{ |
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u32 svr = 0; |
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if (!guts || !guts->regs) |
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return svr; |
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if (guts->little_endian) |
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svr = ioread32(&guts->regs->svr); |
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else |
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svr = ioread32be(&guts->regs->svr); |
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return svr; |
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} |
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static int fsl_guts_probe(struct platform_device *pdev) |
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{ |
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struct device_node *np = pdev->dev.of_node; |
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struct device *dev = &pdev->dev; |
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struct resource *res; |
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const struct fsl_soc_die_attr *soc_die; |
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const char *machine; |
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u32 svr; |
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/* Initialize guts */ |
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guts = devm_kzalloc(dev, sizeof(*guts), GFP_KERNEL); |
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if (!guts) |
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return -ENOMEM; |
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guts->little_endian = of_property_read_bool(np, "little-endian"); |
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
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guts->regs = devm_ioremap_resource(dev, res); |
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if (IS_ERR(guts->regs)) |
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return PTR_ERR(guts->regs); |
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/* Register soc device */ |
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root = of_find_node_by_path("/"); |
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if (of_property_read_string(root, "model", &machine)) |
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of_property_read_string_index(root, "compatible", 0, &machine); |
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if (machine) |
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soc_dev_attr.machine = machine; |
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svr = fsl_guts_get_svr(); |
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soc_die = fsl_soc_die_match(svr, fsl_soc_die); |
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if (soc_die) { |
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soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL, |
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"QorIQ %s", soc_die->die); |
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} else { |
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soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL, "QorIQ"); |
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} |
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if (!soc_dev_attr.family) |
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return -ENOMEM; |
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soc_dev_attr.soc_id = devm_kasprintf(dev, GFP_KERNEL, |
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"svr:0x%08x", svr); |
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if (!soc_dev_attr.soc_id) |
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return -ENOMEM; |
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soc_dev_attr.revision = devm_kasprintf(dev, GFP_KERNEL, "%d.%d", |
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(svr >> 4) & 0xf, svr & 0xf); |
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if (!soc_dev_attr.revision) |
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return -ENOMEM; |
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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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return PTR_ERR(soc_dev); |
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pr_info("Machine: %s\n", soc_dev_attr.machine); |
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pr_info("SoC family: %s\n", soc_dev_attr.family); |
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pr_info("SoC ID: %s, Revision: %s\n", |
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soc_dev_attr.soc_id, soc_dev_attr.revision); |
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return 0; |
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} |
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static int fsl_guts_remove(struct platform_device *dev) |
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{ |
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soc_device_unregister(soc_dev); |
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of_node_put(root); |
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return 0; |
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} |
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/* |
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* Table for matching compatible strings, for device tree |
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* guts node, for Freescale QorIQ SOCs. |
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*/ |
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static const struct of_device_id fsl_guts_of_match[] = { |
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{ .compatible = "fsl,qoriq-device-config-1.0", }, |
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{ .compatible = "fsl,qoriq-device-config-2.0", }, |
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{ .compatible = "fsl,p1010-guts", }, |
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{ .compatible = "fsl,p1020-guts", }, |
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{ .compatible = "fsl,p1021-guts", }, |
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{ .compatible = "fsl,p1022-guts", }, |
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{ .compatible = "fsl,p1023-guts", }, |
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{ .compatible = "fsl,p2020-guts", }, |
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{ .compatible = "fsl,bsc9131-guts", }, |
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{ .compatible = "fsl,bsc9132-guts", }, |
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{ .compatible = "fsl,mpc8536-guts", }, |
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{ .compatible = "fsl,mpc8544-guts", }, |
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{ .compatible = "fsl,mpc8548-guts", }, |
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{ .compatible = "fsl,mpc8568-guts", }, |
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{ .compatible = "fsl,mpc8569-guts", }, |
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{ .compatible = "fsl,mpc8572-guts", }, |
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{ .compatible = "fsl,ls1021a-dcfg", }, |
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{ .compatible = "fsl,ls1043a-dcfg", }, |
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{ .compatible = "fsl,ls2080a-dcfg", }, |
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{ .compatible = "fsl,ls1088a-dcfg", }, |
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{ .compatible = "fsl,ls1012a-dcfg", }, |
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{ .compatible = "fsl,ls1046a-dcfg", }, |
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{ .compatible = "fsl,lx2160a-dcfg", }, |
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{ .compatible = "fsl,ls1028a-dcfg", }, |
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{} |
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}; |
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MODULE_DEVICE_TABLE(of, fsl_guts_of_match); |
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static struct platform_driver fsl_guts_driver = { |
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.driver = { |
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.name = "fsl-guts", |
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.of_match_table = fsl_guts_of_match, |
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}, |
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.probe = fsl_guts_probe, |
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.remove = fsl_guts_remove, |
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}; |
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static int __init fsl_guts_init(void) |
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{ |
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return platform_driver_register(&fsl_guts_driver); |
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} |
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core_initcall(fsl_guts_init); |
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static void __exit fsl_guts_exit(void) |
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{ |
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platform_driver_unregister(&fsl_guts_driver); |
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} |
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module_exit(fsl_guts_exit);
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