1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
/*
* Copyright (c) 2015 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <sysreset.h>
#include <asm/state.h>
#include <asm/test.h>
DECLARE_GLOBAL_DATA_PTR;
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;
}
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_offset(dev) == -1)
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;
default:
return -ENOSYS;
}
if (!state->sysreset_allowed[type])
return -EACCES;
return -EINPROGRESS;
}
static struct sysreset_ops sandbox_sysreset_ops = {
.request = sandbox_sysreset_request,
};
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,
};
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",
};
|
