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/board/xes/xpedite517x/xpedite517x.c

@@ -0,0 +1,81 @@
+/*
+ * Copyright 2009 Extreme Engineering Solutions, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/processor.h>
+#include <fsl_ddr_sdram.h>
+#include <asm/mmu.h>
+#include <asm/io.h>
+#include <fdt_support.h>
+#include <pca953x.h>
+#include "../common/fsl_8xxx_misc.h"
+
+#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_PCI)
+extern void ft_board_pci_setup(void *blob, bd_t *bd);
+#endif
+
+/*
+ * Print out which flash was booted from and if booting from the 2nd flash,
+ * swap flash chip selects to maintain consistent flash numbering/addresses.
+ */
+static void flash_cs_fixup(void)
+{
+	int flash_sel;
+
+	/*
+	 * Print boot dev and swap flash flash chip selects if booted from 2nd
+	 * flash.  Swapping chip selects presents user with a common memory
+	 * map regardless of which flash was booted from.
+	 */
+	flash_sel = !((pca953x_get_val(CONFIG_SYS_I2C_PCA953X_ADDR0) &
+			CONFIG_SYS_PCA953X_C0_FLASH_PASS_CS));
+	printf("Flash: Executed from flash%d\n", flash_sel ? 2 : 1);
+
+	if (flash_sel) {
+		set_lbc_br(0, CONFIG_SYS_BR1_PRELIM);
+		set_lbc_or(0, CONFIG_SYS_OR1_PRELIM);
+
+		set_lbc_br(1, CONFIG_SYS_BR0_PRELIM);
+		set_lbc_or(1, CONFIG_SYS_OR0_PRELIM);
+	}
+}
+
+int board_early_init_r(void)
+{
+	/* Initialize PCA9557 devices */
+	pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR0, 0xff, 0);
+	pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR1, 0xff, 0);
+	pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR2, 0xff, 0);
+	pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR3, 0xff, 0);
+
+	flash_cs_fixup();
+
+	return 0;
+}
+
+phys_size_t initdram(int board_type)
+{
+	phys_size_t dram_size = fsl_ddr_sdram();
+
+#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
+	/* Initialize and enable DDR ECC */
+	ddr_enable_ecc(dram_size);
+#endif
+
+	return dram_size;
+}
+
+#if defined(CONFIG_OF_BOARD_SETUP)
+int ft_board_setup(void *blob, bd_t *bd)
+{
+#ifdef CONFIG_PCI
+	ft_board_pci_setup(blob, bd);
+#endif
+	ft_cpu_setup(blob, bd);
+
+	return 0;
+}
+#endif