avionic design with actual uboot and tooling

submodule of avionic design uboot bootloader and with included tools to
get you started , read readme.md and readme-tk1-loader.md

u-boot/include/watchdog.h

@@ -0,0 +1,102 @@
+/*
+ * (C) Copyright 2001
+ * Erik Theisen,  Wave 7 Optics, etheisen@mindspring.com.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/*
+ * Watchdog functions and macros.
+ */
+#ifndef _WATCHDOG_H_
+#define _WATCHDOG_H_
+
+#if !defined(__ASSEMBLY__)
+/*
+ * Reset the watchdog timer, always returns 0
+ *
+ * This function is here since it is shared between board_f() and board_r(),
+ * and the legacy arch/<arch>/board.c code.
+ */
+int init_func_watchdog_reset(void);
+#endif
+
+#if defined(CONFIG_WATCHDOG) || defined(CONFIG_HW_WATCHDOG)
+#define INIT_FUNC_WATCHDOG_INIT	init_func_watchdog_init,
+#define INIT_FUNC_WATCHDOG_RESET	init_func_watchdog_reset,
+#else
+#define INIT_FUNC_WATCHDOG_INIT
+#define INIT_FUNC_WATCHDOG_RESET
+#endif
+
+#if defined(CONFIG_HW_WATCHDOG) && defined(CONFIG_WATCHDOG)
+#  error "Configuration error: CONFIG_HW_WATCHDOG and CONFIG_WATCHDOG can't be used together."
+#endif
+
+/*
+ * Hardware watchdog
+ */
+#ifdef CONFIG_HW_WATCHDOG
+	#if defined(__ASSEMBLY__)
+		#define WATCHDOG_RESET bl hw_watchdog_reset
+	#else
+		extern void hw_watchdog_reset(void);
+
+		#define WATCHDOG_RESET hw_watchdog_reset
+	#endif /* __ASSEMBLY__ */
+#else
+	/*
+	 * Maybe a software watchdog?
+	 */
+	#if defined(CONFIG_WATCHDOG)
+		#if defined(__ASSEMBLY__)
+			#define WATCHDOG_RESET bl watchdog_reset
+		#else
+			extern void watchdog_reset(void);
+
+			#define WATCHDOG_RESET watchdog_reset
+		#endif
+	#else
+		/*
+		 * No hardware or software watchdog.
+		 */
+		#if defined(__ASSEMBLY__)
+			#define WATCHDOG_RESET /*XXX DO_NOT_DEL_THIS_COMMENT*/
+		#else
+			#define WATCHDOG_RESET() {}
+		#endif /* __ASSEMBLY__ */
+	#endif /* CONFIG_WATCHDOG && !__ASSEMBLY__ */
+#endif /* CONFIG_HW_WATCHDOG */
+
+/*
+ * Prototypes from $(CPU)/cpu.c.
+ */
+
+/* MPC 8xx */
+#if (defined(CONFIG_8xx) || defined(CONFIG_MPC860)) && !defined(__ASSEMBLY__)
+	void reset_8xx_watchdog(volatile immap_t *immr);
+#endif
+
+/* MPC 5xx */
+#if defined(CONFIG_5xx) && !defined(__ASSEMBLY__)
+	void reset_5xx_watchdog(volatile immap_t *immr);
+#endif
+
+/* MPC 5xxx */
+#if defined(CONFIG_MPC5xxx) && !defined(__ASSEMBLY__)
+	void reset_5xxx_watchdog(void);
+#endif
+
+/* AMCC 4xx */
+#if defined(CONFIG_4xx) && !defined(__ASSEMBLY__)
+	void reset_4xx_watchdog(void);
+#endif
+
+#if defined(CONFIG_HW_WATCHDOG) && !defined(__ASSEMBLY__)
+	void hw_watchdog_init(void);
+#endif
+
+#if defined(CONFIG_MPC85xx) && !defined(__ASSEMBLY__)
+	void init_85xx_watchdog(void);
+#endif
+#endif /* _WATCHDOG_H_ */