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, 76 deletions

diff --git a/arch/avr32/lib/clear_user.S b/arch/avr32/lib/clear_user.S
deleted file mode 100644
index d8991b6f8eb7..000000000000
--- a/arch/avr32/lib/clear_user.S
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * Copyright 2004-2006 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.
- */
-#include <asm/page.h>
-#include <asm/thread_info.h>
-#include <asm/asm.h>
-
-	.text
-	.align	1
-	.global	clear_user
-	.type	clear_user, "function"
-clear_user:
-	branch_if_kernel r8, __clear_user
-	ret_if_privileged r8, r12, r11, r11
-
-	.global	__clear_user
-	.type	__clear_user, "function"
-__clear_user:
-	mov	r9, r12
-	mov	r8, 0
-	andl	r9, 3, COH
-	brne	5f
-
-1:	sub	r11, 4
-	brlt	2f
-
-10:	st.w	r12++, r8
-	sub	r11, 4
-	brge	10b
-
-2:	sub	r11, -4
-	reteq	0
-
-	/* Unaligned count or address */
-	bld	r11, 1
-	brcc	12f
-11:	st.h	r12++, r8
-	sub	r11, 2
-	reteq	0
-12:	st.b	r12++, r8
-	retal	0
-
-	/* Unaligned address */
-5:	cp.w	r11, 4
-	brlt	2b
-
-	lsl	r9, 2
-	add	pc, pc, r9
-13:	st.b	r12++, r8
-	sub	r11, 1
-14:	st.b	r12++, r8
-	sub	r11, 1
-15:	st.b	r12++, r8
-	sub	r11, 1
-	rjmp	1b
-
-	.size	clear_user, . - clear_user
-	.size	__clear_user, . - __clear_user
-
-	.section .fixup, "ax"
-	.align	1
-18:	sub	r11, -4
-19:	retal	r11
-
-	.section __ex_table, "a"
-	.align	2
-	.long	10b, 18b
-	.long	11b, 19b
-	.long	12b, 19b
-	.long	13b, 19b
-	.long	14b, 19b
-	.long	15b, 19b