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/include/sja1000.h

@@ -0,0 +1,44 @@
+/*
+ * Copyright 2009, Matthias Fuchs <matthias.fuchs@esd.eu>
+ *
+ * SJA1000 register layout for basic CAN mode
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _SJA1000_H_
+#define _SJA1000_H_
+
+/*
+ * SJA1000 register layout in basic can mode
+ */
+struct sja1000_basic_s {
+	u8 cr;
+	u8 cmr;
+	u8 sr;
+	u8 ir;
+	u8 ac;
+	u8 am;
+	u8 btr0;
+	u8 btr1;
+	u8 oc;
+	u8 txb[10];
+	u8 rxb[10];
+	u8 unused;
+	u8 cdr;
+};
+
+/* control register */
+#define CR_RR		0x01
+
+/* output control register */
+#define OC_MODE0	0x01
+#define OC_MODE1	0x02
+#define OC_POL0		0x04
+#define OC_TN0		0x08
+#define OC_TP0		0x10
+#define OC_POL1		0x20
+#define OC_TN1		0x40
+#define OC_TP1		0x80
+
+#endif