mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-27 03:47:43 +00:00
soc: renesas: Identify SoC and register with the SoC bus
Identify the SoC type and revision, and register this information with
the SoC bus, so it is available under /sys/devices/soc0/, and can be
checked where needed using soc_device_match().
Identification is done using the Product Register or Common Chip Code
Register, as declared in DT (PRR only for now), or using a hardcoded
fallback if missing.
Example:
Detected Renesas R-Car Gen2 r8a7791 ES1.0
...
# cat /sys/devices/soc0/{machine,family,soc_id,revision}
Koelsch
R-Car Gen2
r8a7791
ES1.0
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Geert Uytterhoeven
Simon Horman
parent
5384f45cd9
commit
8d6799a9ba
@ -40,6 +40,7 @@ menuconfig ARCH_RENESAS
|
||||
select ARCH_DMA_ADDR_T_64BIT if ARM_LPAE
|
||||
select NO_IOPORT_MAP
|
||||
select PINCTRL
|
||||
select SOC_BUS
|
||||
select GPIOLIB
|
||||
select ZONE_DMA if ARM_LPAE
|
||||
|
||||
|
||||
@ -143,6 +143,7 @@ config ARCH_RENESAS
|
||||
select PM
|
||||
select PM_GENERIC_DOMAINS
|
||||
select RENESAS_IRQC
|
||||
select SOC_BUS
|
||||
help
|
||||
This enables support for the ARMv8 based Renesas SoCs.
|
||||
|
||||
|
||||
@ -1,3 +1,5 @@
|
||||
obj-$(CONFIG_SOC_BUS) += renesas-soc.o
|
||||
|
||||
obj-$(CONFIG_ARCH_R8A7779) += rcar-sysc.o r8a7779-sysc.o
|
||||
obj-$(CONFIG_ARCH_R8A7790) += rcar-sysc.o r8a7790-sysc.o
|
||||
obj-$(CONFIG_ARCH_R8A7791) += rcar-sysc.o r8a7791-sysc.o
|
||||
|
||||
257
drivers/soc/renesas/renesas-soc.c
Normal file
257
drivers/soc/renesas/renesas-soc.c
Normal file
@ -0,0 +1,257 @@
|
||||
/*
|
||||
* Renesas SoC Identification
|
||||
*
|
||||
* Copyright (C) 2014-2016 Glider bvba
|
||||
*
|
||||
* 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; version 2 of the License.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
#include <linux/io.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/of_address.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/sys_soc.h>
|
||||
|
||||
|
||||
struct renesas_family {
|
||||
const char name[16];
|
||||
u32 reg; /* CCCR or PRR, if not in DT */
|
||||
};
|
||||
|
||||
static const struct renesas_family fam_rcar_gen1 __initconst __maybe_unused = {
|
||||
.name = "R-Car Gen1",
|
||||
.reg = 0xff000044, /* PRR (Product Register) */
|
||||
};
|
||||
|
||||
static const struct renesas_family fam_rcar_gen2 __initconst __maybe_unused = {
|
||||
.name = "R-Car Gen2",
|
||||
.reg = 0xff000044, /* PRR (Product Register) */
|
||||
};
|
||||
|
||||
static const struct renesas_family fam_rcar_gen3 __initconst __maybe_unused = {
|
||||
.name = "R-Car Gen3",
|
||||
.reg = 0xfff00044, /* PRR (Product Register) */
|
||||
};
|
||||
|
||||
static const struct renesas_family fam_rmobile __initconst __maybe_unused = {
|
||||
.name = "R-Mobile",
|
||||
.reg = 0xe600101c, /* CCCR (Common Chip Code Register) */
|
||||
};
|
||||
|
||||
static const struct renesas_family fam_rza __initconst __maybe_unused = {
|
||||
.name = "RZ/A",
|
||||
};
|
||||
|
||||
static const struct renesas_family fam_rzg __initconst __maybe_unused = {
|
||||
.name = "RZ/G",
|
||||
.reg = 0xff000044, /* PRR (Product Register) */
|
||||
};
|
||||
|
||||
static const struct renesas_family fam_shmobile __initconst __maybe_unused = {
|
||||
.name = "SH-Mobile",
|
||||
.reg = 0xe600101c, /* CCCR (Common Chip Code Register) */
|
||||
};
|
||||
|
||||
|
||||
struct renesas_soc {
|
||||
const struct renesas_family *family;
|
||||
u8 id;
|
||||
};
|
||||
|
||||
static const struct renesas_soc soc_rz_a1h __initconst __maybe_unused = {
|
||||
.family = &fam_rza,
|
||||
};
|
||||
|
||||
static const struct renesas_soc soc_rmobile_ape6 __initconst __maybe_unused = {
|
||||
.family = &fam_rmobile,
|
||||
.id = 0x3f,
|
||||
};
|
||||
|
||||
static const struct renesas_soc soc_rmobile_a1 __initconst __maybe_unused = {
|
||||
.family = &fam_rmobile,
|
||||
.id = 0x40,
|
||||
};
|
||||
|
||||
static const struct renesas_soc soc_rz_g1m __initconst __maybe_unused = {
|
||||
.family = &fam_rzg,
|
||||
.id = 0x47,
|
||||
};
|
||||
|
||||
static const struct renesas_soc soc_rz_g1e __initconst __maybe_unused = {
|
||||
.family = &fam_rzg,
|
||||
.id = 0x4c,
|
||||
};
|
||||
|
||||
static const struct renesas_soc soc_rcar_m1a __initconst __maybe_unused = {
|
||||
.family = &fam_rcar_gen1,
|
||||
};
|
||||
|
||||
static const struct renesas_soc soc_rcar_h1 __initconst __maybe_unused = {
|
||||
.family = &fam_rcar_gen1,
|
||||
.id = 0x3b,
|
||||
};
|
||||
|
||||
static const struct renesas_soc soc_rcar_h2 __initconst __maybe_unused = {
|
||||
.family = &fam_rcar_gen2,
|
||||
.id = 0x45,
|
||||
};
|
||||
|
||||
static const struct renesas_soc soc_rcar_m2_w __initconst __maybe_unused = {
|
||||
.family = &fam_rcar_gen2,
|
||||
.id = 0x47,
|
||||
};
|
||||
|
||||
static const struct renesas_soc soc_rcar_v2h __initconst __maybe_unused = {
|
||||
.family = &fam_rcar_gen2,
|
||||
.id = 0x4a,
|
||||
};
|
||||
|
||||
static const struct renesas_soc soc_rcar_m2_n __initconst __maybe_unused = {
|
||||
.family = &fam_rcar_gen2,
|
||||
.id = 0x4b,
|
||||
};
|
||||
|
||||
static const struct renesas_soc soc_rcar_e2 __initconst __maybe_unused = {
|
||||
.family = &fam_rcar_gen2,
|
||||
.id = 0x4c,
|
||||
};
|
||||
|
||||
static const struct renesas_soc soc_rcar_h3 __initconst __maybe_unused = {
|
||||
.family = &fam_rcar_gen3,
|
||||
.id = 0x4f,
|
||||
};
|
||||
|
||||
static const struct renesas_soc soc_rcar_m3_w __initconst __maybe_unused = {
|
||||
.family = &fam_rcar_gen3,
|
||||
.id = 0x52,
|
||||
};
|
||||
|
||||
static const struct renesas_soc soc_shmobile_ag5 __initconst __maybe_unused = {
|
||||
.family = &fam_shmobile,
|
||||
.id = 0x37,
|
||||
};
|
||||
|
||||
|
||||
static const struct of_device_id renesas_socs[] __initconst = {
|
||||
#ifdef CONFIG_ARCH_R7S72100
|
||||
{ .compatible = "renesas,r7s72100", .data = &soc_rz_a1h },
|
||||
#endif
|
||||
#ifdef CONFIG_ARCH_R8A73A4
|
||||
{ .compatible = "renesas,r8a73a4", .data = &soc_rmobile_ape6 },
|
||||
#endif
|
||||
#ifdef CONFIG_ARCH_R8A7740
|
||||
{ .compatible = "renesas,r8a7740", .data = &soc_rmobile_a1 },
|
||||
#endif
|
||||
#ifdef CONFIG_ARCH_R8A7743
|
||||
{ .compatible = "renesas,r8a7743", .data = &soc_rz_g1m },
|
||||
#endif
|
||||
#ifdef CONFIG_ARCH_R8A7745
|
||||
{ .compatible = "renesas,r8a7745", .data = &soc_rz_g1e },
|
||||
#endif
|
||||
#ifdef CONFIG_ARCH_R8A7778
|
||||
{ .compatible = "renesas,r8a7778", .data = &soc_rcar_m1a },
|
||||
#endif
|
||||
#ifdef CONFIG_ARCH_R8A7779
|
||||
{ .compatible = "renesas,r8a7779", .data = &soc_rcar_h1 },
|
||||
#endif
|
||||
#ifdef CONFIG_ARCH_R8A7790
|
||||
{ .compatible = "renesas,r8a7790", .data = &soc_rcar_h2 },
|
||||
#endif
|
||||
#ifdef CONFIG_ARCH_R8A7791
|
||||
{ .compatible = "renesas,r8a7791", .data = &soc_rcar_m2_w },
|
||||
#endif
|
||||
#ifdef CONFIG_ARCH_R8A7792
|
||||
{ .compatible = "renesas,r8a7792", .data = &soc_rcar_v2h },
|
||||
#endif
|
||||
#ifdef CONFIG_ARCH_R8A7793
|
||||
{ .compatible = "renesas,r8a7793", .data = &soc_rcar_m2_n },
|
||||
#endif
|
||||
#ifdef CONFIG_ARCH_R8A7794
|
||||
{ .compatible = "renesas,r8a7794", .data = &soc_rcar_e2 },
|
||||
#endif
|
||||
#ifdef CONFIG_ARCH_R8A7795
|
||||
{ .compatible = "renesas,r8a7795", .data = &soc_rcar_h3 },
|
||||
#endif
|
||||
#ifdef CONFIG_ARCH_R8A7796
|
||||
{ .compatible = "renesas,r8a7796", .data = &soc_rcar_m3_w },
|
||||
#endif
|
||||
#ifdef CONFIG_ARCH_SH73A0
|
||||
{ .compatible = "renesas,sh73a0", .data = &soc_shmobile_ag5 },
|
||||
#endif
|
||||
{ /* sentinel */ }
|
||||
};
|
||||
|
||||
static int __init renesas_soc_init(void)
|
||||
{
|
||||
struct soc_device_attribute *soc_dev_attr;
|
||||
const struct renesas_family *family;
|
||||
const struct of_device_id *match;
|
||||
const struct renesas_soc *soc;
|
||||
void __iomem *chipid = NULL;
|
||||
struct soc_device *soc_dev;
|
||||
struct device_node *np;
|
||||
unsigned int product;
|
||||
|
||||
match = of_match_node(renesas_socs, of_root);
|
||||
if (!match)
|
||||
return -ENODEV;
|
||||
|
||||
soc = match->data;
|
||||
family = soc->family;
|
||||
|
||||
/* Try PRR first, then hardcoded fallback */
|
||||
np = of_find_compatible_node(NULL, NULL, "renesas,prr");
|
||||
if (np) {
|
||||
chipid = of_iomap(np, 0);
|
||||
of_node_put(np);
|
||||
} else if (soc->id) {
|
||||
chipid = ioremap(family->reg, 4);
|
||||
}
|
||||
if (chipid) {
|
||||
product = readl(chipid);
|
||||
iounmap(chipid);
|
||||
if (soc->id && ((product >> 8) & 0xff) != soc->id) {
|
||||
pr_warn("SoC mismatch (product = 0x%x)\n", product);
|
||||
return -ENODEV;
|
||||
}
|
||||
}
|
||||
|
||||
soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
|
||||
if (!soc_dev_attr)
|
||||
return -ENOMEM;
|
||||
|
||||
np = of_find_node_by_path("/");
|
||||
of_property_read_string(np, "model", &soc_dev_attr->machine);
|
||||
of_node_put(np);
|
||||
|
||||
soc_dev_attr->family = kstrdup_const(family->name, GFP_KERNEL);
|
||||
soc_dev_attr->soc_id = kstrdup_const(strchr(match->compatible, ',') + 1,
|
||||
GFP_KERNEL);
|
||||
if (chipid)
|
||||
soc_dev_attr->revision = kasprintf(GFP_KERNEL, "ES%u.%u",
|
||||
((product >> 4) & 0x0f) + 1,
|
||||
product & 0xf);
|
||||
|
||||
pr_info("Detected Renesas %s %s %s\n", soc_dev_attr->family,
|
||||
soc_dev_attr->soc_id, soc_dev_attr->revision ?: "");
|
||||
|
||||
soc_dev = soc_device_register(soc_dev_attr);
|
||||
if (IS_ERR(soc_dev)) {
|
||||
kfree(soc_dev_attr->revision);
|
||||
kfree_const(soc_dev_attr->soc_id);
|
||||
kfree_const(soc_dev_attr->family);
|
||||
kfree(soc_dev_attr);
|
||||
return PTR_ERR(soc_dev);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
core_initcall(renesas_soc_init);
|
||||
Loading…
Reference in New Issue
Block a user