arch: remove m32r port

The Mitsubishi/Renesas m32r architecture has been around for many years,
but the Linux port has been obsolete for a very long time as well, with
the last significant updates done for linux-2.6.14.

While some m32r microcontrollers are still being marketed by Renesas,
those are apparently no longer possible to support, mainly due to the
lack of an external memory interface.

Hirokazu Takata was the maintainer until the architecture got marked
Orphaned in 2014.

Link: http://www.linux-m32r.org/
Link: https://www.renesas.com/en-eu/products/microcontrollers-microprocessors/m32r.html
Cc: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 274 deletions

diff --git a/arch/m32r/include/asm/bitops.h b/arch/m32r/include/asm/bitops.h
deleted file mode 100644
index 64e70e5..0000000
--- a/arch/m32r/include/asm/bitops.h
+++ /dev/null
@@ -1,274 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_M32R_BITOPS_H
-#define _ASM_M32R_BITOPS_H
-
-/*
- *  linux/include/asm-m32r/bitops.h
- *
- *  Copyright 1992, Linus Torvalds.
- *
- *  M32R version:
- *    Copyright (C) 2001, 2002  Hitoshi Yamamoto
- *    Copyright (C) 2004  Hirokazu Takata <takata at linux-m32r.org>
- */
-
-#ifndef _LINUX_BITOPS_H
-#error only <linux/bitops.h> can be included directly
-#endif
-
-#include <linux/compiler.h>
-#include <linux/irqflags.h>
-#include <asm/assembler.h>
-#include <asm/byteorder.h>
-#include <asm/dcache_clear.h>
-#include <asm/types.h>
-#include <asm/barrier.h>
-
-/*
- * These have to be done with inline assembly: that way the bit-setting
- * is guaranteed to be atomic. All bit operations return 0 if the bit
- * was cleared before the operation and != 0 if it was not.
- *
- * bit 0 is the LSB of addr; bit 32 is the LSB of (addr+1).
- */
-
-/**
- * set_bit - Atomically set a bit in memory
- * @nr: the bit to set
- * @addr: the address to start counting from
- *
- * This function is atomic and may not be reordered.  See __set_bit()
- * if you do not require the atomic guarantees.
- * Note that @nr may be almost arbitrarily large; this function is not
- * restricted to acting on a single-word quantity.
- */
-static __inline__ void set_bit(int nr, volatile void * addr)
-{
-	__u32 mask;
-	volatile __u32 *a = addr;
-	unsigned long flags;
-	unsigned long tmp;
-
-	a += (nr >> 5);
-	mask = (1 << (nr & 0x1F));
-
-	local_irq_save(flags);
-	__asm__ __volatile__ (
-		DCACHE_CLEAR("%0", "r6", "%1")
-		M32R_LOCK" %0, @%1;		\n\t"
-		"or	%0, %2;			\n\t"
-		M32R_UNLOCK" %0, @%1;		\n\t"
-		: "=&r" (tmp)
-		: "r" (a), "r" (mask)
-		: "memory"
-#ifdef CONFIG_CHIP_M32700_TS1
-		, "r6"
-#endif	/* CONFIG_CHIP_M32700_TS1 */
-	);
-	local_irq_restore(flags);
-}
-
-/**
- * clear_bit - Clears a bit in memory
- * @nr: Bit to clear
- * @addr: Address to start counting from
- *
- * clear_bit() is atomic and may not be reordered.  However, it does
- * not contain a memory barrier, so if it is used for locking purposes,
- * you should call smp_mb__before_atomic() and/or smp_mb__after_atomic()
- * in order to ensure changes are visible on other processors.
- */
-static __inline__ void clear_bit(int nr, volatile void * addr)
-{
-	__u32 mask;
-	volatile __u32 *a = addr;
-	unsigned long flags;
-	unsigned long tmp;
-
-	a += (nr >> 5);
-	mask = (1 << (nr & 0x1F));
-
-	local_irq_save(flags);
-
-	__asm__ __volatile__ (
-		DCACHE_CLEAR("%0", "r6", "%1")
-		M32R_LOCK" %0, @%1;		\n\t"
-		"and	%0, %2;			\n\t"
-		M32R_UNLOCK" %0, @%1;		\n\t"
-		: "=&r" (tmp)
-		: "r" (a), "r" (~mask)
-		: "memory"
-#ifdef CONFIG_CHIP_M32700_TS1
-		, "r6"
-#endif	/* CONFIG_CHIP_M32700_TS1 */
-	);
-	local_irq_restore(flags);
-}
-
-/**
- * change_bit - Toggle a bit in memory
- * @nr: Bit to clear
- * @addr: Address to start counting from
- *
- * change_bit() is atomic and may not be reordered.
- * Note that @nr may be almost arbitrarily large; this function is not
- * restricted to acting on a single-word quantity.
- */
-static __inline__ void change_bit(int nr, volatile void * addr)
-{
-	__u32  mask;
-	volatile __u32  *a = addr;
-	unsigned long flags;
-	unsigned long tmp;
-
-	a += (nr >> 5);
-	mask = (1 << (nr & 0x1F));
-
-	local_irq_save(flags);
-	__asm__ __volatile__ (
-		DCACHE_CLEAR("%0", "r6", "%1")
-		M32R_LOCK" %0, @%1;		\n\t"
-		"xor	%0, %2;			\n\t"
-		M32R_UNLOCK" %0, @%1;		\n\t"
-		: "=&r" (tmp)
-		: "r" (a), "r" (mask)
-		: "memory"
-#ifdef CONFIG_CHIP_M32700_TS1
-		, "r6"
-#endif	/* CONFIG_CHIP_M32700_TS1 */
-	);
-	local_irq_restore(flags);
-}
-
-/**
- * test_and_set_bit - Set a bit and return its old value
- * @nr: Bit to set
- * @addr: Address to count from
- *
- * This operation is atomic and cannot be reordered.
- * It also implies a memory barrier.
- */
-static __inline__ int test_and_set_bit(int nr, volatile void * addr)
-{
-	__u32 mask, oldbit;
-	volatile __u32 *a = addr;
-	unsigned long flags;
-	unsigned long tmp;
-
-	a += (nr >> 5);
-	mask = (1 << (nr & 0x1F));
-
-	local_irq_save(flags);
-	__asm__ __volatile__ (
-		DCACHE_CLEAR("%0", "%1", "%2")
-		M32R_LOCK" %0, @%2;		\n\t"
-		"mv	%1, %0;			\n\t"
-		"and	%0, %3;			\n\t"
-		"or	%1, %3;			\n\t"
-		M32R_UNLOCK" %1, @%2;		\n\t"
-		: "=&r" (oldbit), "=&r" (tmp)
-		: "r" (a), "r" (mask)
-		: "memory"
-	);
-	local_irq_restore(flags);
-
-	return (oldbit != 0);
-}
-
-/**
- * test_and_clear_bit - Clear a bit and return its old value
- * @nr: Bit to set
- * @addr: Address to count from
- *
- * This operation is atomic and cannot be reordered.
- * It also implies a memory barrier.
- */
-static __inline__ int test_and_clear_bit(int nr, volatile void * addr)
-{
-	__u32 mask, oldbit;
-	volatile __u32 *a = addr;
-	unsigned long flags;
-	unsigned long tmp;
-
-	a += (nr >> 5);
-	mask = (1 << (nr & 0x1F));
-
-	local_irq_save(flags);
-
-	__asm__ __volatile__ (
-		DCACHE_CLEAR("%0", "%1", "%3")
-		M32R_LOCK" %0, @%3;		\n\t"
-		"mv	%1, %0;			\n\t"
-		"and	%0, %2;			\n\t"
-		"not	%2, %2;			\n\t"
-		"and	%1, %2;			\n\t"
-		M32R_UNLOCK" %1, @%3;		\n\t"
-		: "=&r" (oldbit), "=&r" (tmp), "+r" (mask)
-		: "r" (a)
-		: "memory"
-	);
-	local_irq_restore(flags);
-
-	return (oldbit != 0);
-}
-
-/**
- * test_and_change_bit - Change a bit and return its old value
- * @nr: Bit to set
- * @addr: Address to count from
- *
- * This operation is atomic and cannot be reordered.
- * It also implies a memory barrier.
- */
-static __inline__ int test_and_change_bit(int nr, volatile void * addr)
-{
-	__u32 mask, oldbit;
-	volatile __u32 *a = addr;
-	unsigned long flags;
-	unsigned long tmp;
-
-	a += (nr >> 5);
-	mask = (1 << (nr & 0x1F));
-
-	local_irq_save(flags);
-	__asm__ __volatile__ (
-		DCACHE_CLEAR("%0", "%1", "%2")
-		M32R_LOCK" %0, @%2;		\n\t"
-		"mv	%1, %0;			\n\t"
-		"and	%0, %3;			\n\t"
-		"xor	%1, %3;			\n\t"
-		M32R_UNLOCK" %1, @%2;		\n\t"
-		: "=&r" (oldbit), "=&r" (tmp)
-		: "r" (a), "r" (mask)
-		: "memory"
-	);
-	local_irq_restore(flags);
-
-	return (oldbit != 0);
-}
-
-#include <asm-generic/bitops/non-atomic.h>
-#include <asm-generic/bitops/ffz.h>
-#include <asm-generic/bitops/__ffs.h>
-#include <asm-generic/bitops/fls.h>
-#include <asm-generic/bitops/__fls.h>
-#include <asm-generic/bitops/fls64.h>
-
-#ifdef __KERNEL__
-
-#include <asm-generic/bitops/sched.h>
-#include <asm-generic/bitops/find.h>
-#include <asm-generic/bitops/ffs.h>
-#include <asm-generic/bitops/hweight.h>
-#include <asm-generic/bitops/lock.h>
-
-#endif /* __KERNEL__ */
-
-#ifdef __KERNEL__
-
-#include <asm-generic/bitops/le.h>
-#include <asm-generic/bitops/ext2-atomic.h>
-
-#endif /* __KERNEL__ */
-
-#endif /* _ASM_M32R_BITOPS_H */