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/amcc/bubinga/bubinga.c

@@ -0,0 +1,64 @@
+/*
+ * (C) Copyright 2000-2005
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+
+long int spd_sdram(void);
+
+int board_early_init_f(void)
+{
+	mtdcr(UIC0SR, 0xFFFFFFFF);	/* clear all ints */
+	mtdcr(UIC0ER, 0x00000000);	/* disable all ints */
+	mtdcr(UIC0CR, 0x00000010);
+	mtdcr(UIC0PR, 0xFFFF7FF0);	/* set int polarities */
+	mtdcr(UIC0TR, 0x00000010);	/* set int trigger levels */
+	mtdcr(UIC0SR, 0xFFFFFFFF);	/* clear all ints */
+
+	/*
+	 * Configure CPC0_PCI to enable PerWE as output
+	 * and enable the internal PCI arbiter if selected
+	 */
+	if (in_8((void *)FPGA_REG1) & FPGA_REG1_PCI_INT_ARB)
+		mtdcr(CPC0_PCI, CPC0_PCI_HOST_CFG_EN | CPC0_PCI_ARBIT_EN);
+	else
+		mtdcr(CPC0_PCI, CPC0_PCI_HOST_CFG_EN);
+
+	return 0;
+}
+
+/*
+ * Check Board Identity:
+ */
+int checkboard(void)
+{
+	char buf[64];
+	int i = getenv_f("serial#", buf, sizeof(buf));
+
+	puts("Board: Bubinga - AMCC PPC405EP Evaluation Board");
+
+	if (i > 0) {
+		puts(", serial# ");
+		puts(buf);
+	}
+	putc('\n');
+
+	return (0);
+}
+
+/* -------------------------------------------------------------------------
+  initdram(int board_type) reads EEPROM via I2c. EEPROM contains all of
+  the necessary info for SDRAM controller configuration
+   ------------------------------------------------------------------------- */
+phys_size_t initdram(int board_type)
+{
+	long int ret;
+
+	ret = spd_sdram();
+	return ret;
+}