[people/ms/u-boot.git] / drivers / sysreset / sysreset_sandbox.c

/*
 * 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 == -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",
};
Commit	Line	Data
11636258 SW	1	/*
	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
	15	DECLARE_GLOBAL_DATA_PTR;
	16
	17	static 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
	35	static 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	*/
	44	if (state->fdt_fname && dev->of_offset == -1)
	45	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
66	static struct sysreset_ops sandbox_sysreset_ops = {
67	.request = sandbox_sysreset_request,
68	};
69
70	static const struct udevice_id sandbox_sysreset_ids[] = {
71	{ .compatible = "sandbox,reset" },
72	{ }
73	};
74
75	U_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
82	static struct sysreset_ops sandbox_warm_sysreset_ops = {
83	.request = sandbox_warm_sysreset_request,
84	};
85
86	static const struct udevice_id sandbox_warm_sysreset_ids[] = {
87	{ .compatible = "sandbox,warm-reset" },
88	{ }
89	};
90
91	U_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 */
99	U_BOOT_DEVICE(sysreset_sandbox_non_fdt) = {
100	.name = "sysreset_sandbox",
101	};