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

2026-09-06 03:52:57 +08:00
commit b1928b41c0
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+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) Copyright 2016 Google, Inc
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <sysreset.h>
+#include <wdt.h>
+#include <asm/io.h>
+#include <asm/arch/wdt.h>
+#include <linux/err.h>
+
+static int ast_sysreset_request(struct udevice *dev, enum sysreset_t type)
+{
+	struct udevice *wdt;
+	u32 reset_mode;
+	int ret = uclass_first_device(UCLASS_WDT, &wdt);
+
+	if (ret)
+		return ret;
+
+	switch (type) {
+	case SYSRESET_WARM:
+		reset_mode = WDT_CTRL_RESET_CPU;
+		break;
+	case SYSRESET_COLD:
+		reset_mode = WDT_CTRL_RESET_CHIP;
+		break;
+	default:
+		return -EPROTONOSUPPORT;
+	}
+
+	ret = wdt_expire_now(wdt, reset_mode);
+	if (ret) {
+		debug("Sysreset failed: %d", ret);
+		return ret;
+	}
+
+	return -EINPROGRESS;
+}
+
+static struct sysreset_ops ast_sysreset = {
+	.request	= ast_sysreset_request,
+};
+
+U_BOOT_DRIVER(sysreset_ast) = {
+	.name	= "ast_sysreset",
+	.id	= UCLASS_SYSRESET,
+	.ops	= &ast_sysreset,
+};