blob: 12b3e5f86eb0fbc940d57f8200ae68360f819e50 [file] [log] [blame]
Stephen Warren11636252016-05-12 12:03:35 -06001/*
2 * Copyright (c) 2015 Google, Inc
3 * Written by Simon Glass <sjg@chromium.org>
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7
8#include <common.h>
9#include <dm.h>
10#include <errno.h>
11#include <sysreset.h>
12#include <asm/state.h>
13#include <asm/test.h>
14
15DECLARE_GLOBAL_DATA_PTR;
16
17static int sandbox_warm_sysreset_request(struct udevice *dev,
18 enum sysreset_t type)
19{
20 struct sandbox_state *state = state_get_current();
21
22 switch (type) {
23 case SYSRESET_WARM:
24 state->last_sysreset = type;
25 break;
26 default:
27 return -ENOSYS;
28 }
29 if (!state->sysreset_allowed[type])
30 return -EACCES;
31
32 return -EINPROGRESS;
33}
34
35static int sandbox_sysreset_request(struct udevice *dev, enum sysreset_t type)
36{
37 struct sandbox_state *state = state_get_current();
38
39 /*
40 * If we have a device tree, the device we created from platform data
41 * (see the U_BOOT_DEVICE() declaration below) should not do anything.
42 * If we are that device, return an error.
43 */
Simon Glass03753c92017-05-18 20:09:59 -060044 if (state->fdt_fname && !dev_of_valid(dev))
Stephen Warren11636252016-05-12 12:03:35 -060045 return -ENODEV;
46
47 switch (type) {
48 case SYSRESET_COLD:
49 state->last_sysreset = type;
50 break;
51 case SYSRESET_POWER:
52 state->last_sysreset = type;
53 if (!state->sysreset_allowed[type])
54 return -EACCES;
55 sandbox_exit();
56 break;
57 default:
58 return -ENOSYS;
59 }
60 if (!state->sysreset_allowed[type])
61 return -EACCES;
62
63 return -EINPROGRESS;
64}
65
66static struct sysreset_ops sandbox_sysreset_ops = {
67 .request = sandbox_sysreset_request,
68};
69
70static const struct udevice_id sandbox_sysreset_ids[] = {
71 { .compatible = "sandbox,reset" },
72 { }
73};
74
75U_BOOT_DRIVER(sysreset_sandbox) = {
76 .name = "sysreset_sandbox",
77 .id = UCLASS_SYSRESET,
78 .of_match = sandbox_sysreset_ids,
79 .ops = &sandbox_sysreset_ops,
80};
81
82static struct sysreset_ops sandbox_warm_sysreset_ops = {
83 .request = sandbox_warm_sysreset_request,
84};
85
86static const struct udevice_id sandbox_warm_sysreset_ids[] = {
87 { .compatible = "sandbox,warm-reset" },
88 { }
89};
90
91U_BOOT_DRIVER(warm_sysreset_sandbox) = {
92 .name = "warm_sysreset_sandbox",
93 .id = UCLASS_SYSRESET,
94 .of_match = sandbox_warm_sysreset_ids,
95 .ops = &sandbox_warm_sysreset_ops,
96};
97
98/* This is here in case we don't have a device tree */
99U_BOOT_DEVICE(sysreset_sandbox_non_fdt) = {
100 .name = "sysreset_sandbox",
101};