mirror of
https://github.com/AsahiLinux/u-boot
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db41d65a97
At present panic() is in the vsprintf.h header file. That does not seem like an obvious choice for hang(), even though it relates to panic(). So let's put hang() in its own header. Signed-off-by: Simon Glass <sjg@chromium.org> [trini: Migrate a few more files] Signed-off-by: Tom Rini <trini@konsulko.com>
120 lines
2.2 KiB
C
120 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2017 Google, Inc
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <hang.h>
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#include <wdt.h>
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#include <dm/device-internal.h>
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#include <dm/lists.h>
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DECLARE_GLOBAL_DATA_PTR;
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int wdt_start(struct udevice *dev, u64 timeout_ms, ulong flags)
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{
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const struct wdt_ops *ops = device_get_ops(dev);
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if (!ops->start)
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return -ENOSYS;
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return ops->start(dev, timeout_ms, flags);
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}
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int wdt_stop(struct udevice *dev)
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{
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const struct wdt_ops *ops = device_get_ops(dev);
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if (!ops->stop)
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return -ENOSYS;
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return ops->stop(dev);
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}
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int wdt_reset(struct udevice *dev)
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{
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const struct wdt_ops *ops = device_get_ops(dev);
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if (!ops->reset)
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return -ENOSYS;
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return ops->reset(dev);
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}
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int wdt_expire_now(struct udevice *dev, ulong flags)
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{
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int ret = 0;
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const struct wdt_ops *ops;
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debug("WDT Resetting: %lu\n", flags);
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ops = device_get_ops(dev);
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if (ops->expire_now) {
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return ops->expire_now(dev, flags);
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} else {
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if (!ops->start)
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return -ENOSYS;
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ret = ops->start(dev, 1, flags);
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if (ret < 0)
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return ret;
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hang();
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}
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return ret;
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}
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#if defined(CONFIG_WATCHDOG)
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/*
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* Called by macro WATCHDOG_RESET. This function be called *very* early,
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* so we need to make sure, that the watchdog driver is ready before using
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* it in this function.
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*/
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void watchdog_reset(void)
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{
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static ulong next_reset;
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ulong now;
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/* Exit if GD is not ready or watchdog is not initialized yet */
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if (!gd || !(gd->flags & GD_FLG_WDT_READY))
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return;
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/* Do not reset the watchdog too often */
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now = get_timer(0);
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if (now > next_reset) {
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next_reset = now + 1000; /* reset every 1000ms */
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wdt_reset(gd->watchdog_dev);
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}
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}
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#endif
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static int wdt_post_bind(struct udevice *dev)
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{
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#if defined(CONFIG_NEEDS_MANUAL_RELOC)
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struct wdt_ops *ops = (struct wdt_ops *)device_get_ops(dev);
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static int reloc_done;
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if (!reloc_done) {
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if (ops->start)
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ops->start += gd->reloc_off;
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if (ops->stop)
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ops->stop += gd->reloc_off;
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if (ops->reset)
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ops->reset += gd->reloc_off;
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if (ops->expire_now)
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ops->expire_now += gd->reloc_off;
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reloc_done++;
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}
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#endif
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return 0;
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}
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UCLASS_DRIVER(wdt) = {
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.id = UCLASS_WDT,
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.name = "watchdog",
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.flags = DM_UC_FLAG_SEQ_ALIAS,
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.post_bind = wdt_post_bind,
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};
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