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/include/asm/arch-tegra210/sysctr.h

@@ -0,0 +1,26 @@
+/*
+ * (C) Copyright 2013-2015
+ * NVIDIA Corporation <www.nvidia.com>
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#ifndef _TEGRA210_SYSCTR_H_
+#define _TEGRA210_SYSCTR_H_
+
+struct sysctr_ctlr {
+	u32 cntcr;		/* 0x00: SYSCTR0_CNTCR Counter Control */
+	u32 cntsr;		/* 0x04: SYSCTR0_CNTSR Counter Status */
+	u32 cntcv0;		/* 0x08: SYSCTR0_CNTCV0 Counter Count 31:00 */
+	u32 cntcv1;		/* 0x0C: SYSCTR0_CNTCV1 Counter Count 63:32 */
+	u32 reserved1[4];	/* 0x10 - 0x1C */
+	u32 cntfid0;		/* 0x20: SYSCTR0_CNTFID0 Freq Table Entry */
+	u32 cntfid1;		/* 0x24: SYSCTR0_CNTFID1 Freq Table End */
+	u32 reserved2[1002];	/* 0x28 - 0xFCC */
+	u32 counterid[12];	/* 0xFD0 - 0xFxx CounterID regs, RO */
+};
+
+#define TSC_CNTCR_ENABLE	(1 << 0)	/* Enable */
+#define TSC_CNTCR_HDBG		(1 << 1)	/* Halt on debug */
+
+#endif	/* _TEGRA210_SYSCTR_H_ */