GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/drivers/watchdog/sandbox_wdt.c

@@ -0,0 +1,63 @@
+// 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);
+
+	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,
+};