avr32: remove support for AVR32 architecture

This patch drops support for AVR32 architecture from the Linux kernel.

The AVR32 architecture is not keeping up with the development of the
kernel, and since it shares so much of the drivers with Atmel ARM SoC,
it is starting to hinder these drivers to develop swiftly.

Also, all AVR32 AP7 SoC processors are end of lifed from Atmel (now
Microchip).

Finally, the GCC toolchain is stuck at version 4.2.x, and has not
received any patches since the last release from Atmel;
4.2.4-atmel.1.1.3.avr32linux.1. When building kernel v4.10, this
toolchain is no longer able to properly link the network stack.

Haavard and I have came to the conclusion that we feel keeping AVR32 on
life support offers more obstacles for Atmel ARMs, than it gives joy to
AVR32 users. I also suspect there are very few AVR32 users left today,
if anybody at all.

Signed-off-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Håvard Skinnemoen <hskinnemoen@gmail.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>

1 files changed, 0 insertions, 78 deletions

diff --git a/arch/avr32/include/asm/bug.h b/arch/avr32/include/asm/bug.h
deleted file mode 100644
index 85a92d0..0000000
--- a/arch/avr32/include/asm/bug.h
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- * Copyright (C) 2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#ifndef __ASM_AVR32_BUG_H
-#define __ASM_AVR32_BUG_H
-
-#ifdef CONFIG_BUG
-
-/*
- * According to our Chief Architect, this compact opcode is very
- * unlikely to ever be implemented.
- */
-#define AVR32_BUG_OPCODE	0x5df0
-
-#ifdef CONFIG_DEBUG_BUGVERBOSE
-
-#define _BUG_OR_WARN(flags)						\
-	asm volatile(							\
-		"1:	.hword	%0\n"					\
-		"	.section __bug_table,\"a\",@progbits\n"		\
-		"2:	.long	1b\n"					\
-		"	.long	%1\n"					\
-		"	.short	%2\n"					\
-		"	.short	%3\n"					\
-		"	.org	2b + %4\n"				\
-		"	.previous"					\
-		:							\
-		: "i"(AVR32_BUG_OPCODE), "i"(__FILE__),			\
-		  "i"(__LINE__), "i"(flags),				\
-		  "i"(sizeof(struct bug_entry)))
-
-#else
-
-#define _BUG_OR_WARN(flags)						\
-	asm volatile(							\
-		"1:	.hword	%0\n"					\
-		"	.section __bug_table,\"a\",@progbits\n"		\
-		"2:	.long	1b\n"					\
-		"	.short	%1\n"					\
-		"	.org	2b + %2\n"				\
-		"	.previous"					\
-		:							\
-		: "i"(AVR32_BUG_OPCODE), "i"(flags),			\
-		  "i"(sizeof(struct bug_entry)))
-
-#endif /* CONFIG_DEBUG_BUGVERBOSE */
-
-#define BUG()								\
-	do {								\
-		_BUG_OR_WARN(0);					\
-		unreachable();						\
-	} while (0)
-
-#define WARN_ON(condition)							\
-	({								\
-		int __ret_warn_on = !!(condition);			\
-		if (unlikely(__ret_warn_on))				\
-			_BUG_OR_WARN(BUGFLAG_WARNING);			\
-		unlikely(__ret_warn_on);				\
-	})
-
-#define HAVE_ARCH_BUG
-#define HAVE_ARCH_WARN_ON
-
-#endif /* CONFIG_BUG */
-
-#include <asm-generic/bug.h>
-
-struct pt_regs;
-void die(const char *str, struct pt_regs *regs, long err);
-void _exception(long signr, struct pt_regs *regs, int code,
-		unsigned long addr);
-
-#endif /* __ASM_AVR32_BUG_H */