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;
61 state->last_sysreset = type;
62 if (!state->sysreset_allowed[type])
66 case SYSRESET_POWER_OFF:
67 if (!state->sysreset_allowed[type])
72 if (!state->sysreset_allowed[type])
78 int sandbox_sysreset_get_status(struct udevice *dev, char *buf, int size)
80 strlcpy(buf, "Reset Status: COLD", size);
85 int sandbox_sysreset_get_last(struct udevice *dev)
87 struct sandbox_state *state = state_get_current();
90 * The first phase is a power reset, after that we assume we don't
93 return state->jumped_fname ? SYSRESET_WARM : SYSRESET_POWER;
96 static struct sysreset_ops sandbox_sysreset_ops = {
97 .request = sandbox_sysreset_request,
98 .get_status = sandbox_sysreset_get_status,
99 .get_last = sandbox_sysreset_get_last,
102 static const struct udevice_id sandbox_sysreset_ids[] = {
103 { .compatible = "sandbox,reset" },
107 U_BOOT_DRIVER(sysreset_sandbox) = {
108 .name = "sysreset_sandbox",
109 .id = UCLASS_SYSRESET,
110 .of_match = sandbox_sysreset_ids,
111 .ops = &sandbox_sysreset_ops,
114 static struct sysreset_ops sandbox_warm_sysreset_ops = {
115 .request = sandbox_warm_sysreset_request,
116 .get_status = sandbox_warm_sysreset_get_status,
117 .get_last = sandbox_warm_sysreset_get_last,
120 static const struct udevice_id sandbox_warm_sysreset_ids[] = {
121 { .compatible = "sandbox,warm-reset" },
125 U_BOOT_DRIVER(warm_sysreset_sandbox) = {
126 .name = "warm_sysreset_sandbox",
127 .id = UCLASS_SYSRESET,
128 .of_match = sandbox_warm_sysreset_ids,
129 .ops = &sandbox_warm_sysreset_ops,
132 /* This is here in case we don't have a device tree */
133 U_BOOT_DEVICE(sysreset_sandbox_non_fdt) = {
134 .name = "sysreset_sandbox",