1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2015 Google, Inc
4 * Written by Simon Glass <sjg@chromium.org>
11 #include <asm/state.h>
14 static int sandbox_warm_sysreset_request(struct udevice *dev,
17 struct sandbox_state *state = state_get_current();
21 state->last_sysreset = type;
26 if (!state->sysreset_allowed[type])
32 int sandbox_warm_sysreset_get_status(struct udevice *dev, char *buf, int size)
34 strlcpy(buf, "Reset Status: WARM", size);
39 int sandbox_warm_sysreset_get_last(struct udevice *dev)
44 static int sandbox_sysreset_request(struct udevice *dev, enum sysreset_t type)
46 struct sandbox_state *state = state_get_current();
49 * If we have a device tree, the device we created from platform data
50 * (see the U_BOOT_DEVICE() declaration below) should not do anything.
51 * If we are that device, return an error.
53 if (state->fdt_fname && !dev_of_valid(dev))
58 state->last_sysreset = type;
60 case SYSRESET_POWER_OFF:
61 state->last_sysreset = type;
62 if (!state->sysreset_allowed[type])
67 if (!state->sysreset_allowed[type])
73 if (!state->sysreset_allowed[type])
79 int sandbox_sysreset_get_status(struct udevice *dev, char *buf, int size)
81 strlcpy(buf, "Reset Status: COLD", size);
86 int sandbox_sysreset_get_last(struct udevice *dev)
88 struct sandbox_state *state = state_get_current();
91 * The first phase is a power reset, after that we assume we don't
94 return state->jumped_fname ? SYSRESET_WARM : SYSRESET_POWER;
97 static struct sysreset_ops sandbox_sysreset_ops = {
98 .request = sandbox_sysreset_request,
99 .get_status = sandbox_sysreset_get_status,
100 .get_last = sandbox_sysreset_get_last,
103 static const struct udevice_id sandbox_sysreset_ids[] = {
104 { .compatible = "sandbox,reset" },
108 U_BOOT_DRIVER(sysreset_sandbox) = {
109 .name = "sysreset_sandbox",
110 .id = UCLASS_SYSRESET,
111 .of_match = sandbox_sysreset_ids,
112 .ops = &sandbox_sysreset_ops,
115 static struct sysreset_ops sandbox_warm_sysreset_ops = {
116 .request = sandbox_warm_sysreset_request,
117 .get_status = sandbox_warm_sysreset_get_status,
118 .get_last = sandbox_warm_sysreset_get_last,
121 static const struct udevice_id sandbox_warm_sysreset_ids[] = {
122 { .compatible = "sandbox,warm-reset" },
126 U_BOOT_DRIVER(warm_sysreset_sandbox) = {
127 .name = "warm_sysreset_sandbox",
128 .id = UCLASS_SYSRESET,
129 .of_match = sandbox_warm_sysreset_ids,
130 .ops = &sandbox_warm_sysreset_ops,
133 /* This is here in case we don't have a device tree */
134 U_BOOT_DEVICE(sysreset_sandbox_non_fdt) = {
135 .name = "sysreset_sandbox",