u-boot/drivers/watchdog/sandbox_wdt.c
Heinrich Schuchardt 592e2e5929 sandbox: fix sandbox_wdt_expire_now()
With CONFIG_SYSRESET_WATCHDOG=y the sandbox can use a watchdog based system
reset.

To make this work calling sandbox_wdt_expire_now() must lead to a reset.

With this change we can test the development suggested in

  [PATCH 0/4] Improved sysreset/watchdog uclass integration
  https://lists.denx.de/pipermail/u-boot/2021-August/458656.html

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-11-13 08:16:52 -07:00

64 lines
1.2 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2017 Google, Inc
*/
#include <common.h>
#include <dm.h>
#include <wdt.h>
#include <asm/state.h>
static int sandbox_wdt_start(struct udevice *dev, u64 timeout, ulong flags)
{
struct sandbox_state *state = state_get_current();
state->wdt.counter = timeout;
state->wdt.running = true;
return 0;
}
static int sandbox_wdt_stop(struct udevice *dev)
{
struct sandbox_state *state = state_get_current();
state->wdt.running = false;
return 0;
}
static int sandbox_wdt_reset(struct udevice *dev)
{
struct sandbox_state *state = state_get_current();
state->wdt.reset_count++;
return 0;
}
static int sandbox_wdt_expire_now(struct udevice *dev, ulong flags)
{
sandbox_wdt_start(dev, 1, flags);
sandbox_reset();
return 0;
}
static const struct wdt_ops sandbox_wdt_ops = {
.start = sandbox_wdt_start,
.reset = sandbox_wdt_reset,
.stop = sandbox_wdt_stop,
.expire_now = sandbox_wdt_expire_now,
};
static const struct udevice_id sandbox_wdt_ids[] = {
{ .compatible = "sandbox,wdt" },
{}
};
U_BOOT_DRIVER(wdt_sandbox) = {
.name = "wdt_sandbox",
.id = UCLASS_WDT,
.of_match = sandbox_wdt_ids,
.ops = &sandbox_wdt_ops,
};