280 строки
6.5 KiB
C
280 строки
6.5 KiB
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);
|