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

source/trusted-firmware/trusted-firmware-a-2.8/plat/imx/common/include/imx_wdog.h

@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef IMX_WDOG_H
+#define IMX_WDOG_H
+
+#include <stdint.h>
+
+#include <arch.h>
+
+struct wdog_regs {
+	uint16_t wcr;
+	uint16_t wsr;
+	uint16_t wrsr;
+	uint16_t wicr;
+	uint16_t wmcr;
+};
+
+/* WCR bits */
+#define WCR_WDZST		BIT(0)
+#define WCR_WDBG		BIT(1)
+#define WCR_WDE			BIT(2)
+#define WCR_WDT			BIT(3)
+#define WCR_SRS			BIT(4)
+#define WCR_WDA			BIT(5)
+#define WCR_SRE			BIT(6)
+#define WCR_WDW			BIT(7)
+#define WCR_WT(x)		((x) << 8)
+
+/* WSR bits */
+#define WSR_FIRST		0x5555
+#define WSR_SECOND		0xAAAA
+
+/* WRSR bits */
+#define WRSR_SFTW		BIT(0)
+#define WRSR_TOUT		BIT(1)
+#define WRSR_POR		BIT(4)
+
+/* WICR bits */
+static inline int wicr_calc_wict(int sec, int half_sec)
+{
+	int wict_bits;
+
+	/* Represents WICR bits 7 - 0 */
+	wict_bits = ((sec << 1) | (half_sec ? 1 : 0));
+
+	return wict_bits;
+}
+
+#define WICR_WTIS		BIT(14)
+#define WICR_WIE		BIT(15)
+
+/* WMCR bits */
+#define WMCR_PDE		BIT(0)
+
+/* External facing API */
+void imx_wdog_init(void);
+
+#endif /* IMX_WDOG_H */