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/freescale/ls1021atwr/dcu.c

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * FSL DCU Framebuffer driver
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <fsl_dcu_fb.h>
+#include "div64.h"
+#include "../common/dcu_sii9022a.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+unsigned int dcu_set_pixel_clock(unsigned int pixclock)
+{
+	unsigned long long div;
+
+	div = (unsigned long long)(gd->bus_clk / 1000);
+	div *= (unsigned long long)pixclock;
+	do_div(div, 1000000000);
+
+	return div;
+}
+
+int platform_dcu_init(unsigned int xres, unsigned int yres,
+		      const char *port,
+		      struct fb_videomode *dcu_fb_videomode)
+{
+	const char *name;
+	unsigned int pixel_format;
+
+	if (strncmp(port, "twr_lcd", 4) == 0) {
+		name = "TWR_LCD_RGB card";
+	} else {
+		name = "HDMI";
+		dcu_set_dvi_encoder(dcu_fb_videomode);
+	}
+
+	printf("DCU: Switching to %s monitor @ %ux%u\n", name, xres, yres);
+
+	pixel_format = 32;
+	fsl_dcu_init(xres, yres, pixel_format);
+
+	return 0;
+}