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/stdio_dev.h

@@ -0,0 +1,133 @@
+/*
+ * (C) Copyright 2000
+ * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _STDIO_DEV_H_
+#define _STDIO_DEV_H_
+
+#include <linux/list.h>
+
+/*
+ * STDIO DEVICES
+ */
+
+#define DEV_FLAGS_INPUT	 0x00000001	/* Device can be used as input	console */
+#define DEV_FLAGS_OUTPUT 0x00000002	/* Device can be used as output console */
+
+/* Device information */
+struct stdio_dev {
+	int	flags;			/* Device flags: input/output/system	*/
+	int	ext;			/* Supported extensions			*/
+	char	name[32];		/* Device name				*/
+
+/* GENERAL functions */
+
+	int (*start)(struct stdio_dev *dev);	/* To start the device */
+	int (*stop)(struct stdio_dev *dev);	/* To stop the device */
+
+/* OUTPUT functions */
+
+	/* To put a char */
+	void (*putc)(struct stdio_dev *dev, const char c);
+	/* To put a string (accelerator) */
+	void (*puts)(struct stdio_dev *dev, const char *s);
+
+/* INPUT functions */
+
+	/* To test if a char is ready... */
+	int (*tstc)(struct stdio_dev *dev);
+	int (*getc)(struct stdio_dev *dev);	/* To get that char */
+
+/* Other functions */
+
+	void *priv;			/* Private extensions			*/
+	struct list_head list;
+};
+
+/*
+ * VIDEO EXTENSIONS
+ */
+#define VIDEO_FORMAT_RGB_INDEXED	0x0000
+#define VIDEO_FORMAT_RGB_DIRECTCOLOR	0x0001
+#define VIDEO_FORMAT_YUYV_4_4_4		0x0010
+#define VIDEO_FORMAT_YUYV_4_2_2		0x0011
+
+typedef struct {
+	void *address;			/* Address of framebuffer		*/
+	ushort	width;			/* Horizontal resolution		*/
+	ushort	height;			/* Vertical resolution			*/
+	uchar	format;			/* Format				*/
+	uchar	colors;			/* Colors number or color depth		*/
+	void (*setcolreg) (int, int, int, int);
+	void (*getcolreg) (int, void *);
+} video_ext_t;
+
+/*
+ * VARIABLES
+ */
+extern struct stdio_dev *stdio_devices[];
+extern char *stdio_names[MAX_FILES];
+
+/*
+ * PROTOTYPES
+ */
+int	stdio_register (struct stdio_dev * dev);
+int stdio_register_dev(struct stdio_dev *dev, struct stdio_dev **devp);
+
+/**
+ * stdio_init_tables() - set up stdio tables ready for devices
+ *
+ * This does not add any devices, but just prepares stdio for use.
+ */
+int stdio_init_tables(void);
+
+/**
+ * stdio_add_devices() - Add stdio devices to the table
+ *
+ * This makes calls to all the various subsystems that use stdio, to make
+ * them register with stdio.
+ */
+int stdio_add_devices(void);
+
+/**
+ * stdio_init() - Sets up stdio ready for use
+ *
+ * This calls stdio_init_tables() and stdio_add_devices()
+ */
+int stdio_init(void);
+
+void	stdio_print_current_devices(void);
+#ifdef CONFIG_SYS_STDIO_DEREGISTER
+int stdio_deregister(const char *devname, int force);
+int stdio_deregister_dev(struct stdio_dev *dev, int force);
+#endif
+struct list_head* stdio_get_list(void);
+struct stdio_dev* stdio_get_by_name(const char* name);
+struct stdio_dev* stdio_clone(struct stdio_dev *dev);
+
+#ifdef CONFIG_LCD
+int	drv_lcd_init (void);
+#endif
+#if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
+int	drv_video_init (void);
+#endif
+#ifdef CONFIG_KEYBOARD
+int	drv_keyboard_init (void);
+#endif
+#ifdef CONFIG_USB_TTY
+int	drv_usbtty_init (void);
+#endif
+#ifdef CONFIG_NETCONSOLE
+int	drv_nc_init (void);
+#endif
+#ifdef CONFIG_JTAG_CONSOLE
+int drv_jtag_console_init (void);
+#endif
+#ifdef CONFIG_CBMEM_CONSOLE
+int cbmemc_init(void);
+#endif
+
+#endif