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/mmc/ftsdc021_sdhci.c

@@ -0,0 +1,33 @@
+/*
+ * (C) Copyright 2013 Faraday Technology
+ * Kuo-Jung Su <dantesu@faraday-tech.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <sdhci.h>
+
+#ifndef CONFIG_FTSDC021_CLOCK
+#define CONFIG_FTSDC021_CLOCK   clk_get_rate("MMC")
+#endif
+
+int ftsdc021_sdhci_init(u32 regbase)
+{
+	struct sdhci_host *host = NULL;
+	uint32_t freq = CONFIG_FTSDC021_CLOCK;
+
+	host = calloc(1, sizeof(struct sdhci_host));
+	if (!host) {
+		puts("sdh_host malloc fail!\n");
+		return 1;
+	}
+
+	host->name = "FTSDC021";
+	host->ioaddr = (void __iomem *)regbase;
+	host->quirks = 0;
+	add_sdhci(host, freq, 0);
+
+	return 0;
+}