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/sparc/include/asm/processor.h

@@ -0,0 +1,102 @@
+/* SPARC Processor specifics
+ * taken from the SPARC port of Linux (ptrace.h).
+ *
+ * (C) Copyright 2007
+ * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __ASM_SPARC_PROCESSOR_H
+#define __ASM_SPARC_PROCESSOR_H
+
+#include <asm/arch/asi.h>
+
+#ifdef CONFIG_LEON
+
+/* All LEON processors supported */
+#include <asm/leon.h>
+
+#else
+/* other processors */
+#error Unknown SPARC Processor
+#endif
+
+#ifndef __ASSEMBLY__
+
+/* flush data cache */
+static __inline__ void sparc_dcache_flush_all(void)
+{
+      __asm__ __volatile__("sta %%g0, [%%g0] %0\n\t"::"i"(ASI_DFLUSH):"memory");
+}
+
+/* flush instruction cache */
+static __inline__ void sparc_icache_flush_all(void)
+{
+      __asm__ __volatile__("sta %%g0, [%%g0] %0\n\t"::"i"(ASI_IFLUSH):"memory");
+}
+
+/* do a cache miss load */
+static __inline__ unsigned long long sparc_load_reg_cachemiss_qword(unsigned
+								    long paddr)
+{
+	unsigned long long retval;
+	__asm__ __volatile__("ldda [%1] %2, %0\n\t":
+			     "=r"(retval):"r"(paddr), "i"(ASI_CACHEMISS));
+	return retval;
+}
+
+static __inline__ unsigned long sparc_load_reg_cachemiss(unsigned long paddr)
+{
+	unsigned long retval;
+	__asm__ __volatile__("lda [%1] %2, %0\n\t":
+			     "=r"(retval):"r"(paddr), "i"(ASI_CACHEMISS));
+	return retval;
+}
+
+static __inline__ unsigned short sparc_load_reg_cachemiss_word(unsigned long
+							       paddr)
+{
+	unsigned short retval;
+	__asm__ __volatile__("lduha [%1] %2, %0\n\t":
+			     "=r"(retval):"r"(paddr), "i"(ASI_CACHEMISS));
+	return retval;
+}
+
+static __inline__ unsigned char sparc_load_reg_cachemiss_byte(unsigned long
+							      paddr)
+{
+	unsigned char retval;
+	__asm__ __volatile__("lduba [%1] %2, %0\n\t":
+			     "=r"(retval):"r"(paddr), "i"(ASI_CACHEMISS));
+	return retval;
+}
+
+/* do a physical address bypass write, i.e. for 0x80000000 */
+static __inline__ void sparc_store_reg_bypass(unsigned long paddr,
+					      unsigned long value)
+{
+	__asm__ __volatile__("sta %0, [%1] %2\n\t"::"r"(value), "r"(paddr),
+			     "i"(ASI_BYPASS):"memory");
+}
+
+static __inline__ unsigned long sparc_load_reg_bypass(unsigned long paddr)
+{
+	unsigned long retval;
+	__asm__ __volatile__("lda [%1] %2, %0\n\t":
+			     "=r"(retval):"r"(paddr), "i"(ASI_BYPASS));
+	return retval;
+}
+
+/* Macros for bypassing cache when reading */
+#define SPARC_NOCACHE_READ_DWORD(address) sparc_load_reg_cachemiss_qword((unsigned int)(address))
+#define SPARC_NOCACHE_READ(address)       sparc_load_reg_cachemiss((unsigned int)(address))
+#define SPARC_NOCACHE_READ_HWORD(address) sparc_load_reg_cachemiss_word((unsigned int)(address))
+#define SPARC_NOCACHE_READ_BYTE(address)  sparc_load_reg_cachemiss_byte((unsigned int)(address))
+
+#define SPARC_BYPASS_READ(address)        sparc_load_reg_bypass((unsigned int)(address))
+#define SPARC_BYPASS_WRITE(address,value) sparc_store_reg_bypass((unsigned int)(address),(unsigned int)(value))
+
+#endif
+
+#endif				/* __ASM_SPARC_PROCESSOR_H */