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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>
65 lines
1.2 KiB
C
65 lines
1.2 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 <wdt.h>
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#include <asm/state.h>
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static int sandbox_wdt_start(struct udevice *dev, u64 timeout, ulong flags)
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{
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struct sandbox_state *state = state_get_current();
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state->wdt.counter = timeout;
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state->wdt.running = true;
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return 0;
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}
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static int sandbox_wdt_stop(struct udevice *dev)
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{
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struct sandbox_state *state = state_get_current();
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state->wdt.running = false;
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return 0;
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}
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static int sandbox_wdt_reset(struct udevice *dev)
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{
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struct sandbox_state *state = state_get_current();
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state->wdt.reset_count++;
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return 0;
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}
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static int sandbox_wdt_expire_now(struct udevice *dev, ulong flags)
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{
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sandbox_wdt_start(dev, 1, flags);
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sandbox_reset();
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return 0;
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}
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static const struct wdt_ops sandbox_wdt_ops = {
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.start = sandbox_wdt_start,
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.reset = sandbox_wdt_reset,
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.stop = sandbox_wdt_stop,
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.expire_now = sandbox_wdt_expire_now,
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};
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static const struct udevice_id sandbox_wdt_ids[] = {
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{ .compatible = "sandbox,wdt" },
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{}
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};
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U_BOOT_DRIVER(wdt_sandbox) = {
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.name = "wdt_sandbox",
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.id = UCLASS_WDT,
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.of_match = sandbox_wdt_ids,
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.ops = &sandbox_wdt_ops,
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};
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