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_DRVINFO() declaration below) should not do anything.
51 * If we are that device, return an error.
53 if (state->fdt_fname && !dev_has_ofnode(dev))
58 state->last_sysreset = type;
59 if (!state->sysreset_allowed[type])
63 case SYSRESET_POWER_OFF:
64 state->last_sysreset = type;
65 if (!state->sysreset_allowed[type])
69 if (!state->sysreset_allowed[type])
75 if (!state->sysreset_allowed[type])
81 int sandbox_sysreset_get_status(struct udevice *dev, char *buf, int size)
83 strlcpy(buf, "Reset Status: COLD", size);
88 int sandbox_sysreset_get_last(struct udevice *dev)
90 struct sandbox_state *state = state_get_current();
93 * The first phase is a power reset, after that we assume we don't
96 return state->jumped_fname ? SYSRESET_WARM : SYSRESET_POWER;
99 static struct sysreset_ops sandbox_sysreset_ops = {
100 .request = sandbox_sysreset_request,
101 .get_status = sandbox_sysreset_get_status,
102 .get_last = sandbox_sysreset_get_last,
105 static const struct udevice_id sandbox_sysreset_ids[] = {
106 { .compatible = "sandbox,reset" },
110 U_BOOT_DRIVER(sysreset_sandbox) = {
111 .name = "sysreset_sandbox",
112 .id = UCLASS_SYSRESET,
113 .of_match = sandbox_sysreset_ids,
114 .ops = &sandbox_sysreset_ops,
117 static struct sysreset_ops sandbox_warm_sysreset_ops = {
118 .request = sandbox_warm_sysreset_request,
119 .get_status = sandbox_warm_sysreset_get_status,
120 .get_last = sandbox_warm_sysreset_get_last,
123 static const struct udevice_id sandbox_warm_sysreset_ids[] = {
124 { .compatible = "sandbox,warm-reset" },
128 U_BOOT_DRIVER(warm_sysreset_sandbox) = {
129 .name = "warm_sysreset_sandbox",
130 .id = UCLASS_SYSRESET,
131 .of_match = sandbox_warm_sysreset_ids,
132 .ops = &sandbox_warm_sysreset_ops,
135 #if CONFIG_IS_ENABLED(OF_REAL)
136 /* This is here in case we don't have a device tree */
137 U_BOOT_DRVINFO(sysreset_sandbox_non_fdt) = {
138 .name = "sysreset_sandbox",