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/arch/arm/cpu/armv8/zynqmp/clk.c

@@ -0,0 +1,70 @@
+/*
+ * (C) Copyright 2014 - 2015 Xilinx, Inc.
+ * Michal Simek <michal.simek@xilinx.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/clk.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/sys_proto.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+unsigned long get_uart_clk(int dev_id)
+{
+	u32 ver = zynqmp_get_silicon_version();
+
+	switch (ver) {
+	case ZYNQMP_CSU_VERSION_VELOCE:
+		return 48000;
+	case ZYNQMP_CSU_VERSION_EP108:
+		return 25000000;
+	case ZYNQMP_CSU_VERSION_QEMU:
+		return 133000000;
+	}
+
+	return 100000000;
+}
+
+unsigned long zynqmp_get_system_timer_freq(void)
+{
+	u32 ver = zynqmp_get_silicon_version();
+
+	switch (ver) {
+	case ZYNQMP_CSU_VERSION_VELOCE:
+		return 10000;
+	case ZYNQMP_CSU_VERSION_EP108:
+		return 4000000;
+	case ZYNQMP_CSU_VERSION_QEMU:
+		return 50000000;
+	}
+
+	return 100000000;
+}
+
+#ifdef CONFIG_CLOCKS
+/**
+ * set_cpu_clk_info() - Initialize clock framework
+ * Always returns zero.
+ *
+ * This function is called from common code after relocation and sets up the
+ * clock framework. The framework must not be used before this function had been
+ * called.
+ */
+int set_cpu_clk_info(void)
+{
+	gd->cpu_clk = get_tbclk();
+
+	/* Support Veloce to show at least 1MHz via bdi */
+	if (gd->cpu_clk > 1000000)
+		gd->bd->bi_arm_freq = gd->cpu_clk / 1000000;
+	else
+		gd->bd->bi_arm_freq = 1;
+
+	gd->bd->bi_dsp_freq = 0;
+
+	return 0;
+}
+#endif