sysreset_sandbox.c
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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2015 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <sysreset.h>
#include <asm/state.h>
#include <asm/test.h>
static int sandbox_warm_sysreset_request(struct udevice *dev,
enum sysreset_t type)
{
struct sandbox_state *state = state_get_current();
switch (type) {
case SYSRESET_WARM:
state->last_sysreset = type;
break;
default:
return -ENOSYS;
}
if (!state->sysreset_allowed[type])
return -EACCES;
return -EINPROGRESS;
}
int sandbox_warm_sysreset_get_status(struct udevice *dev, char *buf, int size)
{
strlcpy(buf, "Reset Status: WARM", size);
return 0;
}
int sandbox_warm_sysreset_get_last(struct udevice *dev)
{
return SYSRESET_WARM;
}
static int sandbox_sysreset_request(struct udevice *dev, enum sysreset_t type)
{
struct sandbox_state *state = state_get_current();
/*
* If we have a device tree, the device we created from platform data
* (see the U_BOOT_DEVICE() declaration below) should not do anything.
* If we are that device, return an error.
*/
if (state->fdt_fname && !dev_of_valid(dev))
return -ENODEV;
switch (type) {
case SYSRESET_COLD:
state->last_sysreset = type;
break;
case SYSRESET_POWER:
state->last_sysreset = type;
if (!state->sysreset_allowed[type])
return -EACCES;
sandbox_exit();
break;
case SYSRESET_POWER_OFF:
if (!state->sysreset_allowed[type])
return -EACCES;
default:
return -ENOSYS;
}
if (!state->sysreset_allowed[type])
return -EACCES;
return -EINPROGRESS;
}
int sandbox_sysreset_get_status(struct udevice *dev, char *buf, int size)
{
strlcpy(buf, "Reset Status: COLD", size);
return 0;
}
int sandbox_sysreset_get_last(struct udevice *dev)
{
struct sandbox_state *state = state_get_current();
/*
* The first phase is a power reset, after that we assume we don't
* know.
*/
return state->jumped_fname ? SYSRESET_WARM : SYSRESET_POWER;
}
static struct sysreset_ops sandbox_sysreset_ops = {
.request = sandbox_sysreset_request,
.get_status = sandbox_sysreset_get_status,
.get_last = sandbox_sysreset_get_last,
};
static const struct udevice_id sandbox_sysreset_ids[] = {
{ .compatible = "sandbox,reset" },
{ }
};
U_BOOT_DRIVER(sysreset_sandbox) = {
.name = "sysreset_sandbox",
.id = UCLASS_SYSRESET,
.of_match = sandbox_sysreset_ids,
.ops = &sandbox_sysreset_ops,
};
static struct sysreset_ops sandbox_warm_sysreset_ops = {
.request = sandbox_warm_sysreset_request,
.get_status = sandbox_warm_sysreset_get_status,
.get_last = sandbox_warm_sysreset_get_last,
};
static const struct udevice_id sandbox_warm_sysreset_ids[] = {
{ .compatible = "sandbox,warm-reset" },
{ }
};
U_BOOT_DRIVER(warm_sysreset_sandbox) = {
.name = "warm_sysreset_sandbox",
.id = UCLASS_SYSRESET,
.of_match = sandbox_warm_sysreset_ids,
.ops = &sandbox_warm_sysreset_ops,
};
/* This is here in case we don't have a device tree */
U_BOOT_DEVICE(sysreset_sandbox_non_fdt) = {
.name = "sysreset_sandbox",
};