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/ti/ks2_evm/ddr3_k2e.c

@@ -0,0 +1,48 @@
+/*
+ * Keystone2: DDR3 initialization
+ *
+ * (C) Copyright 2014-2015
+ *     Texas Instruments Incorporated, <www.ti.com>
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#include <common.h>
+#include "ddr3_cfg.h"
+#include <asm/arch/ddr3.h>
+
+static struct pll_init_data ddr3_400 = DDR3_PLL_400;
+static struct pll_init_data ddr3_333 = DDR3_PLL_333;
+
+u32 ddr3_init(void)
+{
+	struct ddr3_spd_cb spd_cb;
+
+	if (ddr3_get_dimm_params_from_spd(&spd_cb)) {
+		printf("Sorry, I don't know how to configure DDR3A.\n"
+		       "Bye :(\n");
+		for (;;)
+			;
+	}
+
+	printf("Detected SO-DIMM [%s]\n", spd_cb.dimm_name);
+
+	printf("DDR3 speed %d\n", spd_cb.ddrspdclock);
+	if (spd_cb.ddrspdclock == 1600)
+		init_pll(&ddr3_400);
+	else
+		init_pll(&ddr3_333);
+
+	/* Reset DDR3 PHY after PLL enabled */
+	ddr3_reset_ddrphy();
+
+	spd_cb.phy_cfg.zq0cr1 |= 0x10000;
+	spd_cb.phy_cfg.zq1cr1 |= 0x10000;
+	spd_cb.phy_cfg.zq2cr1 |= 0x10000;
+	ddr3_init_ddrphy(KS2_DDR3A_DDRPHYC, &spd_cb.phy_cfg);
+	ddr3_init_ddremif(KS2_DDR3A_EMIF_CTRL_BASE, &spd_cb.emif_cfg);
+
+	printf("DRAM: %d GiB\n", spd_cb.ddr_size_gbyte);
+
+	return (u32)spd_cb.ddr_size_gbyte;
+}