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, 103 deletions

diff --git a/arch/avr32/include/asm/thread_info.h b/arch/avr32/include/asm/thread_info.h
deleted file mode 100644
index d4d3079541ea..000000000000
--- a/arch/avr32/include/asm/thread_info.h
+++ /dev/null
@@ -1,103 +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_THREAD_INFO_H
-#define __ASM_AVR32_THREAD_INFO_H
-
-#include <asm/page.h>
-
-#define THREAD_SIZE_ORDER	1
-#define THREAD_SIZE		(PAGE_SIZE << THREAD_SIZE_ORDER)
-
-#ifndef __ASSEMBLY__
-#include <asm/types.h>
-
-struct task_struct;
-
-struct thread_info {
-	struct task_struct	*task;		/* main task structure */
-	unsigned long		flags;		/* low level flags */
-	__u32			cpu;
-	__s32			preempt_count;	/* 0 => preemptable, <0 => BUG */
-	__u32			rar_saved;	/* return address... */
-	__u32			rsr_saved;	/* ...and status register
-						   saved by debug handler
-						   when setting up
-						   trampoline */
-	__u8			supervisor_stack[0];
-};
-
-#define INIT_THREAD_INFO(tsk)						\
-{									\
-	.task		= &tsk,						\
-	.flags		= 0,						\
-	.cpu		= 0,						\
-	.preempt_count	= INIT_PREEMPT_COUNT,				\
-}
-
-#define init_thread_info	(init_thread_union.thread_info)
-#define init_stack		(init_thread_union.stack)
-
-/*
- * Get the thread information struct from C.
- * We do the usual trick and use the lower end of the stack for this
- */
-static inline struct thread_info *current_thread_info(void)
-{
-	unsigned long addr = ~(THREAD_SIZE - 1);
-
-	asm("and %0, sp" : "=r"(addr) : "0"(addr));
-	return (struct thread_info *)addr;
-}
-
-#define get_thread_info(ti) get_task_struct((ti)->task)
-#define put_thread_info(ti) put_task_struct((ti)->task)
-
-#endif /* !__ASSEMBLY__ */
-
-/*
- * Thread information flags
- * - these are process state flags that various assembly files may need to access
- * - pending work-to-be-done flags are in LSW
- * - other flags in MSW
- */
-#define TIF_SYSCALL_TRACE       0       /* syscall trace active */
-#define TIF_SIGPENDING          1       /* signal pending */
-#define TIF_NEED_RESCHED        2       /* rescheduling necessary */
-#define TIF_BREAKPOINT		4	/* enter monitor mode on return */
-#define TIF_SINGLE_STEP		5	/* single step in progress */
-#define TIF_MEMDIE		6	/* is terminating due to OOM killer */
-#define TIF_RESTORE_SIGMASK	7	/* restore signal mask in do_signal */
-#define TIF_CPU_GOING_TO_SLEEP	8	/* CPU is entering sleep 0 mode */
-#define TIF_NOTIFY_RESUME	9	/* callback before returning to user */
-#define TIF_DEBUG		30	/* debugging enabled */
-#define TIF_USERSPACE		31      /* true if FS sets userspace */
-
-#define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
-#define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
-#define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)
-#define _TIF_BREAKPOINT		(1 << TIF_BREAKPOINT)
-#define _TIF_SINGLE_STEP	(1 << TIF_SINGLE_STEP)
-#define _TIF_MEMDIE		(1 << TIF_MEMDIE)
-#define _TIF_CPU_GOING_TO_SLEEP (1 << TIF_CPU_GOING_TO_SLEEP)
-#define _TIF_NOTIFY_RESUME	(1 << TIF_NOTIFY_RESUME)
-
-/* Note: The masks below must never span more than 16 bits! */
-
-/* work to do on interrupt/exception return */
-#define _TIF_WORK_MASK				\
-	(_TIF_SIGPENDING			\
-	 | _TIF_NOTIFY_RESUME			\
-	 | _TIF_NEED_RESCHED			\
-	 | _TIF_BREAKPOINT)
-
-/* work to do on any return to userspace */
-#define _TIF_ALLWORK_MASK	(_TIF_WORK_MASK | _TIF_SYSCALL_TRACE)
-/* work to do on return from debug mode */
-#define _TIF_DBGWORK_MASK	(_TIF_WORK_MASK & ~_TIF_BREAKPOINT)
-
-#endif /* __ASM_AVR32_THREAD_INFO_H */