swh:1:snp:49cd9498d6cccc5e78252c27dcb645bcf7bf0c91
Tip revision: 7e18e42e4b280c85b76967a9106a13ca61c16179 authored by Linus Torvalds on 04 September 2022, 20:10:01 UTC
Linux 6.0-rc4
Linux 6.0-rc4
Tip revision: 7e18e42
guts.c
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Freescale QorIQ Platforms GUTS Driver
*
* Copyright (C) 2016 Freescale Semiconductor, Inc.
*/
#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 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);