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, 102 deletions

diff --git a/arch/avr32/include/asm/asm.h b/arch/avr32/include/asm/asm.h
deleted file mode 100644
index a2c64f404b98..000000000000
--- a/arch/avr32/include/asm/asm.h
+++ /dev/null
@@ -1,102 +0,0 @@
-/*
- * Copyright (C) 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.
- */
-#ifndef __ASM_AVR32_ASM_H__
-#define __ASM_AVR32_ASM_H__
-
-#include <asm/sysreg.h>
-#include <asm/asm-offsets.h>
-#include <asm/thread_info.h>
-
-#define mask_interrupts		ssrf	SYSREG_GM_OFFSET
-#define mask_exceptions		ssrf	SYSREG_EM_OFFSET
-#define unmask_interrupts	csrf	SYSREG_GM_OFFSET
-#define unmask_exceptions	csrf	SYSREG_EM_OFFSET
-
-#ifdef CONFIG_FRAME_POINTER
-	.macro	save_fp
-	st.w	--sp, r7
-	.endm
-	.macro	restore_fp
-	ld.w	r7, sp++
-	.endm
-	.macro	zero_fp
-	mov	r7, 0
-	.endm
-#else
-	.macro	save_fp
-	.endm
-	.macro	restore_fp
-	.endm
-	.macro	zero_fp
-	.endm
-#endif
-	.macro	get_thread_info reg
-	mov	\reg, sp
-	andl	\reg, ~(THREAD_SIZE - 1) & 0xffff
-	.endm
-
-	/* Save and restore registers */
-	.macro	save_min sr, tmp=lr
-	pushm	lr
-	mfsr	\tmp, \sr
-	zero_fp
-	st.w	--sp, \tmp
-	.endm
-
-	.macro	restore_min sr, tmp=lr
-	ld.w	\tmp, sp++
-	mtsr	\sr, \tmp
-	popm	lr
-	.endm
-
-	.macro	save_half sr, tmp=lr
-	save_fp
-	pushm	r8-r9,r10,r11,r12,lr
-	zero_fp
-	mfsr	\tmp, \sr
-	st.w	--sp, \tmp
-	.endm
-
-	.macro	restore_half sr, tmp=lr
-	ld.w	\tmp, sp++
-	mtsr	\sr, \tmp
-	popm	r8-r9,r10,r11,r12,lr
-	restore_fp
-	.endm
-
-	.macro	save_full_user sr, tmp=lr
-	stmts	--sp, r0,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,sp,lr
-	st.w	--sp, lr
-	zero_fp
-	mfsr	\tmp, \sr
-	st.w	--sp, \tmp
-	.endm
-
-	.macro	restore_full_user sr, tmp=lr
-	ld.w	\tmp, sp++
-	mtsr	\sr, \tmp
-	ld.w	lr, sp++
-	ldmts	sp++, r0,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,sp,lr
-	.endm
-
-	/* uaccess macros */
-	.macro branch_if_kernel scratch, label
-	get_thread_info \scratch
-	ld.w	\scratch, \scratch[TI_flags]
-	bld	\scratch, TIF_USERSPACE
-	brcc	\label
-	.endm
-
-	.macro ret_if_privileged scratch, addr, size, ret
-	sub	\scratch, \size, 1
-	add	\scratch, \addr
-	retcs	\ret
-	retmi	\ret
-	.endm
-
-#endif /* __ASM_AVR32_ASM_H__ */