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, 119 deletions

diff --git a/arch/avr32/lib/copy_user.S b/arch/avr32/lib/copy_user.S
deleted file mode 100644
index 075373471da1..000000000000
--- a/arch/avr32/lib/copy_user.S
+++ /dev/null
@@ -1,119 +0,0 @@
-/*
- * Copy to/from userspace with optional address space checking.
- *
- * 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>
-
-	/*
-	 * __kernel_size_t
-	 * __copy_user(void *to, const void *from, __kernel_size_t n)
-	 *
-	 * Returns the number of bytes not copied. Might be off by
-	 * max 3 bytes if we get a fault in the main loop.
-	 *
-	 * The address-space checking functions simply fall through to
-	 * the non-checking version.
-	 */
-	.text
-	.align	1
-	.global	___copy_from_user
-	.type	___copy_from_user, @function
-___copy_from_user:
-	branch_if_kernel r8, __copy_user
-	ret_if_privileged r8, r11, r10, r10
-	rjmp	__copy_user
-	.size	___copy_from_user, . - ___copy_from_user
-
-	.global	copy_to_user
-	.type	copy_to_user, @function
-copy_to_user:
-	branch_if_kernel r8, __copy_user
-	ret_if_privileged r8, r12, r10, r10
-	.size	copy_to_user, . - copy_to_user
-
-	.global	__copy_user
-	.type	__copy_user, @function
-__copy_user:
-	mov	r9, r11
-	andl	r9, 3, COH
-	brne	6f
-
-	/* At this point, from is word-aligned */
-1:	sub	r10, 4
-	brlt	3f
-
-2:
-10:	ld.w	r8, r11++
-11:	st.w	r12++, r8
-	sub	r10, 4
-	brge	2b
-
-3:	sub	r10, -4
-	reteq	0
-
-	/*
-	 * Handle unaligned count. Need to be careful with r10 here so
-	 * that we return the correct value even if we get a fault
-	 */
-4:
-20:	ld.ub	r8, r11++
-21:	st.b	r12++, r8
-	sub	r10, 1
-	reteq	0
-22:	ld.ub	r8, r11++
-23:	st.b	r12++, r8
-	sub	r10, 1
-	reteq	0
-24:	ld.ub	r8, r11++
-25:	st.b	r12++, r8
-	retal	0
-
-	/* Handle unaligned from-pointer */
-6:	cp.w	r10, 4
-	brlt	4b
-	rsub	r9, r9, 4
-
-30:	ld.ub	r8, r11++
-31:	st.b	r12++, r8
-	sub	r10, 1
-	sub	r9, 1
-	breq	1b
-32:	ld.ub	r8, r11++
-33:	st.b	r12++, r8
-	sub	r10, 1
-	sub	r9, 1
-	breq	1b
-34:	ld.ub	r8, r11++
-35:	st.b	r12++, r8
-	sub	r10, 1
-	rjmp	1b
-	.size	__copy_user, . - __copy_user
-
-	.section .fixup,"ax"
-	.align	1
-19:	sub	r10, -4
-29:	retal	r10
-
-	.section __ex_table,"a"
-	.align	2
-	.long	10b, 19b
-	.long	11b, 19b
-	.long	20b, 29b
-	.long	21b, 29b
-	.long	22b, 29b
-	.long	23b, 29b
-	.long	24b, 29b
-	.long	25b, 29b
-	.long	30b, 29b
-	.long	31b, 29b
-	.long	32b, 29b
-	.long	33b, 29b
-	.long	34b, 29b
-	.long	35b, 29b