mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-25 14:10:43 +00:00
8ae8da10b3
The cpu nodes in arch/sandbox/dts/test.dts should conform to the devicetree specification: * property device_type must be set to "cpu" * the reg property must be provided * the cpu nodes must have an address Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
96 lines
2 KiB
C
96 lines
2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2018
|
|
* Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <cpu.h>
|
|
|
|
static int cpu_sandbox_get_desc(const struct udevice *dev, char *buf, int size)
|
|
{
|
|
snprintf(buf, size, "LEG Inc. SuperMegaUltraTurbo CPU No. 1");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cpu_sandbox_get_info(const struct udevice *dev,
|
|
struct cpu_info *info)
|
|
{
|
|
info->cpu_freq = 42 * 42 * 42 * 42 * 42;
|
|
info->features = 0x42424242;
|
|
info->address_width = IS_ENABLED(CONFIG_PHYS_64BIT) ? 64 : 32;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cpu_sandbox_get_count(const struct udevice *dev)
|
|
{
|
|
return 42;
|
|
}
|
|
|
|
static int cpu_sandbox_get_vendor(const struct udevice *dev, char *buf,
|
|
int size)
|
|
{
|
|
snprintf(buf, size, "Languid Example Garbage Inc.");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const char *cpu_current = "cpu@1";
|
|
|
|
void cpu_sandbox_set_current(const char *name)
|
|
{
|
|
cpu_current = name;
|
|
}
|
|
|
|
static int cpu_sandbox_is_current(struct udevice *dev)
|
|
{
|
|
if (!strcmp(dev->name, cpu_current))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct cpu_ops cpu_sandbox_ops = {
|
|
.get_desc = cpu_sandbox_get_desc,
|
|
.get_info = cpu_sandbox_get_info,
|
|
.get_count = cpu_sandbox_get_count,
|
|
.get_vendor = cpu_sandbox_get_vendor,
|
|
.is_current = cpu_sandbox_is_current,
|
|
};
|
|
|
|
static int cpu_sandbox_bind(struct udevice *dev)
|
|
{
|
|
int ret;
|
|
struct cpu_plat *plat = dev_get_parent_plat(dev);
|
|
|
|
/* first examine the property in current cpu node */
|
|
ret = dev_read_u32(dev, "timebase-frequency", &plat->timebase_freq);
|
|
/* if not found, then look at the parent /cpus node */
|
|
if (ret)
|
|
ret = dev_read_u32(dev->parent, "timebase-frequency",
|
|
&plat->timebase_freq);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int cpu_sandbox_probe(struct udevice *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static const struct udevice_id cpu_sandbox_ids[] = {
|
|
{ .compatible = "sandbox,cpu_sandbox" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(cpu_sandbox) = {
|
|
.name = "cpu_sandbox",
|
|
.id = UCLASS_CPU,
|
|
.ops = &cpu_sandbox_ops,
|
|
.of_match = cpu_sandbox_ids,
|
|
.bind = cpu_sandbox_bind,
|
|
.probe = cpu_sandbox_probe,
|
|
};
|