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/arch/sandbox/include/asm/u-boot-sandbox.h

@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Alex Zuepke <azu@sysgo.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _U_BOOT_SANDBOX_H_
+#define _U_BOOT_SANDBOX_H_
+
+/* board/.../... */
+int board_init(void);
+
+/* start.c */
+int sandbox_early_getopt_check(void);
+int sandbox_main_loop_init(void);
+
+int cleanup_before_linux(void);
+
+/* drivers/video/sandbox_sdl.c */
+int sandbox_lcd_sdl_early_init(void);
+
+/**
+ * pci_map_physmem() - map a PCI device into memory
+ *
+ * This is used on sandbox to map a device into memory so that it can be
+ * used with normal memory access. After this call, some part of the device's
+ * internal structure becomes visible.
+ *
+ * This function is normally called from sandbox's map_sysmem() automatically.
+ *
+ * @paddr:	Physical memory address, normally corresponding to a PCI BAR
+ * @lenp:	On entry, the size of the area to map, On exit it is updated
+ *		to the size actually mapped, which may be less if the device
+ *		has less space
+ * @devp:	Returns the device which mapped into this space
+ * @ptrp:	Returns a pointer to the mapped address. The device's space
+ *		can be accessed as @lenp bytes starting here
+ * @return 0 if OK, -ve on error
+ */
+int pci_map_physmem(phys_addr_t paddr, unsigned long *lenp,
+		    struct udevice **devp, void **ptrp);
+
+/**
+ * pci_unmap_physmem() - undo a memory mapping
+ *
+ * This must be called after pci_map_physmem() to undo the mapping.
+ *
+ * @paddr:	Physical memory address, as passed to pci_map_physmem()
+ * @len:	Size of area mapped, as returned by pci_map_physmem()
+ * @dev:	Device to unmap, as returned by pci_map_physmem()
+ * @return 0 if OK, -ve on error
+ */
+int pci_unmap_physmem(const void *addr, unsigned long len,
+		      struct udevice *dev);
+
+/**
+ * sandbox_set_enable_pci_map() - Enable / disable PCI address mapping
+ *
+ * Since address mapping involves calling every driver, provide a way to
+ * enable and disable this. It can be handled automatically by the emulator
+ * uclass, which knows if any emulators are currently active.
+ *
+ * If this is disabled, pci_map_physmem() will not be called from
+ * map_sysmem().
+ *
+ * @enable: 0 to disable, 1 to enable
+ */
+void sandbox_set_enable_pci_map(int enable);
+
+/**
+ * sandbox_read_fdt_from_file() - Read a device tree from a file
+ *
+ * Read a device tree file from a host file and set it up for use as the
+ * control FDT.
+ */
+int sandbox_read_fdt_from_file(void);
+
+/* Exit sandbox (quit U-Boot) */
+void sandbox_exit(void);
+
+#endif	/* _U_BOOT_SANDBOX_H_ */