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/avr32/include/asm/arch-at32ap700x/cacheflush.h

@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2006 Atmel Corporation
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#ifndef __ASM_AVR32_CACHEFLUSH_H
+#define __ASM_AVR32_CACHEFLUSH_H
+
+/*
+ * Invalidate any cacheline containing virtual address vaddr without
+ * writing anything back to memory.
+ *
+ * Note that this function may corrupt unrelated data structures when
+ * applied on buffers that are not cacheline aligned in both ends.
+ */
+static inline void dcache_invalidate_line(volatile void *vaddr)
+{
+	asm volatile("cache %0[0], 0x0b" : : "r"(vaddr) : "memory");
+}
+
+/*
+ * Make sure any cacheline containing virtual address vaddr is written
+ * to memory.
+ */
+static inline void dcache_clean_line(volatile void *vaddr)
+{
+	asm volatile("cache %0[0], 0x0c" : : "r"(vaddr) : "memory");
+}
+
+/*
+ * Make sure any cacheline containing virtual address vaddr is written
+ * to memory and then invalidate it.
+ */
+static inline void dcache_flush_line(volatile void *vaddr)
+{
+	asm volatile("cache %0[0], 0x0d" : : "r"(vaddr) : "memory");
+}
+
+/*
+ * Invalidate any instruction cacheline containing virtual address
+ * vaddr.
+ */
+static inline void icache_invalidate_line(volatile void *vaddr)
+{
+	asm volatile("cache %0[0], 0x01" : : "r"(vaddr) : "memory");
+}
+
+/*
+ * Applies the above functions on all lines that are touched by the
+ * specified virtual address range.
+ */
+void dcache_clean_range(volatile void *start, size_t len);
+void icache_invalidate_range(volatile void *start, size_t len);
+
+static inline void dcache_flush_unlocked(void)
+{
+	asm volatile("cache %0[5], 0x08" : : "r"(0) : "memory");
+}
+
+/*
+ * Make sure any pending writes are completed before continuing.
+ */
+#define sync_write_buffer() asm volatile("sync 0" : : : "memory")
+
+#endif /* __ASM_AVR32_CACHEFLUSH_H */