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"Das U-Boot" Source Tree
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (C) 2017 Masahiro Yamada <yamada.masahiro@socionext.com>
4 */
5
6#include <dm.h>
7#include <sysreset.h>
8#include <linux/errno.h>
9#include <linux/psci.h>
10
11__weak int psci_sysreset_get_status(struct udevice *dev, char *buf, int size)
12{
13 return -EOPNOTSUPP;
14}
15
16static int psci_sysreset_request(struct udevice *dev, enum sysreset_t type)
17{
18 switch (type) {
19 case SYSRESET_WARM:
20 case SYSRESET_COLD:
21 psci_sys_reset(type);
22 break;
23 case SYSRESET_POWER_OFF:
24 psci_sys_poweroff();
25 break;
26 default:
27 return -EPROTONOSUPPORT;
28 }
29
30 return -EINPROGRESS;
31}
32
33static struct sysreset_ops psci_sysreset_ops = {
34 .request = psci_sysreset_request,
35 .get_status = psci_sysreset_get_status,
36};
37
38U_BOOT_DRIVER(psci_sysreset) = {
39 .name = "psci-sysreset",
40 .id = UCLASS_SYSRESET,
41 .ops = &psci_sysreset_ops,
42 .flags = DM_FLAG_PRE_RELOC,
43};