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/x86/include/asm/pci.h

@@ -0,0 +1,42 @@
+/*
+ * (C) Copyright 2002
+ * Daniel Engström, Omicron Ceti AB, daniel@omicron.se
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _PCI_I386_H_
+#define _PCI_I386_H_
+
+#include <pci.h>
+
+/* bus mapping constants (used for PCI core initialization) */
+#define PCI_REG_ADDR	0xcf8
+#define PCI_REG_DATA	0xcfc
+
+#define PCI_CFG_EN	0x80000000
+
+#ifndef __ASSEMBLY__
+
+int pci_x86_read_config(struct udevice *bus, pci_dev_t bdf, uint offset,
+			ulong *valuep, enum pci_size_t size);
+
+int pci_x86_write_config(struct udevice *bus, pci_dev_t bdf, uint offset,
+			 ulong value, enum pci_size_t size);
+
+/**
+ * Assign IRQ number to a PCI device
+ *
+ * This function assigns IRQ for a PCI device. If the device does not exist
+ * or does not require interrupts then this function has no effect.
+ *
+ * @bus:	PCI bus number
+ * @device:	PCI device number
+ * @irq:	An array of IRQ numbers that are assigned to INTA through
+ *		INTD of this PCI device.
+ */
+void pci_assign_irqs(int bus, int device, u8 irq[4]);
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _PCI_I386_H_ */