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/drivers/pci/pci_sh4.c

@@ -0,0 +1,82 @@
+/*
+ * SH4 PCI Controller (PCIC) for U-Boot.
+ * (C) Dustin McIntire (dustin@sensoria.com)
+ * (C) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ * (C) 2008 Yusuke Goda <goda.yusuke@renesas.com>
+ *
+ * u-boot/arch/sh/cpu/sh4/pci-sh4.c
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+
+#include <asm/processor.h>
+#include <asm/io.h>
+#include <asm/pci.h>
+#include <pci.h>
+
+int pci_sh4_init(struct pci_controller *hose)
+{
+	hose->first_busno = 0;
+	hose->region_count = 0;
+	hose->last_busno = 0xff;
+
+	/* PCI memory space */
+	pci_set_region(hose->regions + 0,
+		CONFIG_PCI_MEM_BUS,
+		CONFIG_PCI_MEM_PHYS,
+		CONFIG_PCI_MEM_SIZE,
+		PCI_REGION_MEM);
+	hose->region_count++;
+
+	/* PCI IO space */
+	pci_set_region(hose->regions + 1,
+		CONFIG_PCI_IO_BUS,
+		CONFIG_PCI_IO_PHYS,
+		CONFIG_PCI_IO_SIZE,
+		PCI_REGION_IO);
+	hose->region_count++;
+
+#if defined(CONFIG_PCI_SYS_BUS)
+	/* PCI System Memory space */
+	pci_set_region(hose->regions + 2,
+		CONFIG_PCI_SYS_BUS,
+		CONFIG_PCI_SYS_PHYS,
+		CONFIG_PCI_SYS_SIZE,
+		PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
+	hose->region_count++;
+#endif
+
+	udelay(1000);
+
+	pci_set_ops(hose,
+		    pci_hose_read_config_byte_via_dword,
+		    pci_hose_read_config_word_via_dword,
+		    pci_sh4_read_config_dword,
+		    pci_hose_write_config_byte_via_dword,
+		    pci_hose_write_config_word_via_dword,
+		    pci_sh4_write_config_dword);
+
+	pci_register_hose(hose);
+
+	udelay(1000);
+
+#ifdef CONFIG_PCI_SCAN_SHOW
+	printf("PCI:   Bus Dev VenId DevId Class Int\n");
+#endif
+	hose->last_busno = pci_hose_scan(hose);
+	return 0;
+}
+
+int pci_skip_dev(struct pci_controller *hose, pci_dev_t dev)
+{
+	return 0;
+}
+
+#ifdef CONFIG_PCI_SCAN_SHOW
+int pci_print_dev(struct pci_controller *hose, pci_dev_t dev)
+{
+	return 1;
+}
+#endif /* CONFIG_PCI_SCAN_SHOW */