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>

87 files changed, 0 insertions, 7560 deletions

diff --git a/arch/m32r/include/asm/Kbuild b/arch/m32r/include/asm/Kbuild
deleted file mode 100644
index 985ef1d9f556..000000000000
--- a/arch/m32r/include/asm/Kbuild
+++ /dev/null
@@ -1,13 +0,0 @@
-generic-y += current.h
-generic-y += dma-mapping.h
-generic-y += exec.h
-generic-y += extable.h
-generic-y += irq_work.h
-generic-y += kprobes.h
-generic-y += mcs_spinlock.h
-generic-y += mm-arch-hooks.h
-generic-y += module.h
-generic-y += preempt.h
-generic-y += sections.h
-generic-y += trace_clock.h
-generic-y += word-at-a-time.h
diff --git a/arch/m32r/include/asm/addrspace.h b/arch/m32r/include/asm/addrspace.h
deleted file mode 100644
index 81782c122da4..000000000000
--- a/arch/m32r/include/asm/addrspace.h
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2001 by Hiroyuki Kondo
- *
- * Defitions for the address spaces of the M32R CPUs.
- */
-#ifndef __ASM_M32R_ADDRSPACE_H
-#define __ASM_M32R_ADDRSPACE_H
-
-/*
- * Memory segments (32bit kernel mode addresses)
- */
-#define KUSEG                   0x00000000
-#define KSEG0                   0x80000000
-#define KSEG1                   0xa0000000
-#define KSEG2                   0xc0000000
-#define KSEG3                   0xe0000000
-
-#define K0BASE  KSEG0
-
-/*
- * Returns the kernel segment base of a given address
- */
-#ifndef __ASSEMBLY__
-#define KSEGX(a)                (((unsigned long)(a)) & 0xe0000000)
-#else
-#define KSEGX(a)                ((a) & 0xe0000000)
-#endif
-
-/*
- * Returns the physical address of a KSEG0/KSEG1 address
- */
-#ifndef __ASSEMBLY__
-#define PHYSADDR(a)		(((unsigned long)(a)) & 0x1fffffff)
-#else
-#define PHYSADDR(a)		((a) & 0x1fffffff)
-#endif
-
-/*
- * Map an address to a certain kernel segment
- */
-#ifndef __ASSEMBLY__
-#define KSEG0ADDR(a)		((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG0))
-#define KSEG1ADDR(a)		((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG1))
-#define KSEG2ADDR(a)		((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG2))
-#define KSEG3ADDR(a)		((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG3))
-#else
-#define KSEG0ADDR(a)		(((a) & 0x1fffffff) | KSEG0)
-#define KSEG1ADDR(a)		(((a) & 0x1fffffff) | KSEG1)
-#define KSEG2ADDR(a)		(((a) & 0x1fffffff) | KSEG2)
-#define KSEG3ADDR(a)		(((a) & 0x1fffffff) | KSEG3)
-#endif
-
-#endif /* __ASM_M32R_ADDRSPACE_H */
diff --git a/arch/m32r/include/asm/asm-offsets.h b/arch/m32r/include/asm/asm-offsets.h
deleted file mode 100644
index d370ee36a182..000000000000
--- a/arch/m32r/include/asm/asm-offsets.h
+++ /dev/null
@@ -1 +0,0 @@
-#include <generated/asm-offsets.h>
diff --git a/arch/m32r/include/asm/assembler.h b/arch/m32r/include/asm/assembler.h
deleted file mode 100644
index ed90d894f285..000000000000
--- a/arch/m32r/include/asm/assembler.h
+++ /dev/null
@@ -1,231 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_M32R_ASSEMBLER_H
-#define _ASM_M32R_ASSEMBLER_H
-
-/*
- * linux/asm-m32r/assembler.h
- *
- * Copyright (C) 2004  Hirokazu Takata <takata at linux-m32r.org>
- *
- * This file contains M32R architecture specific macro definitions.
- */
-
-#include <linux/stringify.h>
-
-#undef __STR
-
-#ifdef __ASSEMBLY__
-#define __STR(x) x
-#else
-#define __STR(x) __stringify(x)
-#endif
-
-#ifdef CONFIG_SMP
-#define M32R_LOCK	__STR(lock)
-#define M32R_UNLOCK	__STR(unlock)
-#else
-#define M32R_LOCK	__STR(ld)
-#define M32R_UNLOCK	__STR(st)
-#endif
-
-#ifdef __ASSEMBLY__
-#undef ENTRY
-#define ENTRY(name) ENTRY_M name
-	.macro  ENTRY_M name
-	.global \name
-	ALIGN
-\name:
-	.endm
-#endif
-
-
-/**
- * LDIMM - load immediate value
- * STI - enable interruption
- * CLI - disable interruption
- */
-
-#ifdef __ASSEMBLY__
-
-#define LDIMM(reg,x) LDIMM reg x
-	.macro LDIMM reg x
-	seth	\reg, #high(\x)
-	or3	\reg, \reg, #low(\x)
-	.endm
-
-#if !(defined(CONFIG_CHIP_M32102) || defined(CONFIG_CHIP_M32104))
-#define ENABLE_INTERRUPTS(reg) ENABLE_INTERRUPTS reg
-	.macro ENABLE_INTERRUPTS reg
-	setpsw  #0x40	    ->	nop
-	; WORKAROUND: "-> nop" is a workaround for the M32700(TS1).
-	.endm
-
-#define DISABLE_INTERRUPTS(reg) DISABLE_INTERRUPTS reg
-	.macro DISABLE_INTERRUPTS reg
-	clrpsw  #0x40	    ->	nop
-	; WORKAROUND: "-> nop" is a workaround for the M32700(TS1).
-	.endm
-#else	/* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */
-#define ENABLE_INTERRUPTS(reg) ENABLE_INTERRUPTS reg
-	.macro ENABLE_INTERRUPTS reg
-	mvfc	\reg, psw
-	or3	\reg, \reg, #0x0040
-	mvtc	\reg, psw
-	.endm
-
-#define DISABLE_INTERRUPTS(reg) DISABLE_INTERRUPTS reg
-	.macro DISABLE_INTERRUPTS reg
-	mvfc	\reg, psw
-	and3	\reg, \reg, #0xffbf
-	mvtc	\reg, psw
-	.endm
-#endif	/* CONFIG_CHIP_M32102 */
-
-	.macro	SAVE_ALL
-	push	r0		; orig_r0
-	push	sp		; spi (r15)
-	push	lr		; r14
-	push	r13
-	mvfc	r13, cr3	; spu
-	push	r13
-	mvfc	r13, bbpc
-	push	r13
-	mvfc	r13, bbpsw
-	push	r13
-	mvfc	r13, bpc
-	push	r13
-	mvfc	r13, psw
-	push	r13
-#if defined(CONFIG_ISA_M32R2) && defined(CONFIG_ISA_DSP_LEVEL2)
-	mvfaclo	r13, a1
-	push	r13
-	mvfachi r13, a1
-	push	r13
-	mvfaclo	r13, a0
-	push	r13
-	mvfachi	r13, a0
-	push	r13
-#elif defined(CONFIG_ISA_M32R2) || defined(CONFIG_ISA_M32R)
-	mvfaclo	r13
-	push	r13
-	mvfachi	r13
-	push	r13
-	ldi	r13, #0
-	push	r13		; dummy push acc1h
-	push	r13		; dummy push acc1l
-#else
-#error unknown isa configuration
-#endif
-	ldi	r13, #-1
-	push	r13		; syscall_nr (default: -1)
-	push	r12
-	push	r11
-	push	r10
-	push	r9
-	push	r8
-	push	r7
-	push	r3
-	push	r2
-	push	r1
-	push	r0
-	addi	sp, #-4		; room for implicit pt_regs parameter
-	push	r6
-	push	r5
-	push	r4
-	.endm
-
-	.macro	RESTORE_ALL
-	pop	r4
-	pop	r5
-	pop	r6
-	addi	sp, #4
-	pop	r0
-	pop	r1
-	pop	r2
-	pop	r3
-	pop	r7
-	pop	r8
-	pop	r9
-	pop	r10
-	pop	r11
-	pop	r12
-	addi	r15, #4		; Skip syscall number
-#if defined(CONFIG_ISA_M32R2) && defined(CONFIG_ISA_DSP_LEVEL2)
-	pop	r13
-	mvtachi	r13, a0
-	pop	r13
-	mvtaclo	r13, a0
-	pop	r13
-	mvtachi	r13, a1
-	pop	r13
-	mvtaclo	r13, a1
-#elif defined(CONFIG_ISA_M32R2) || defined(CONFIG_ISA_M32R)
-	pop	r13		; dummy pop acc1h
-	pop	r13		; dummy pop acc1l
-	pop	r13
-	mvtachi	r13
-	pop	r13
-	mvtaclo	r13
-#else
-#error unknown isa configuration
-#endif
-	pop	r14
-	mvtc	r14, psw
-	pop	r14
-	mvtc	r14, bpc
-	addi	sp, #8		; Skip bbpsw, bbpc
-	pop	r14
-	mvtc	r14, cr3	; spu
-	pop	r13
-	pop	lr		; r14
-	pop	sp		; spi (r15)
-	addi	sp, #4		; Skip orig_r0
-	.fillinsn
-1:	rte
-	.section .fixup,"ax"
-2:	bl	do_exit
-	.previous
-	.section __ex_table,"a"
-	ALIGN
-	.long	1b, 2b
-	.previous
-	.endm
-
-#define GET_CURRENT(reg)  get_current reg
-	.macro get_current reg
-	ldi  \reg, #-8192
-	and  \reg, sp
-	.endm
-
-#if !(defined(CONFIG_CHIP_M32102) || defined(CONFIG_CHIP_M32104))
-	.macro	SWITCH_TO_KERNEL_STACK
-	; switch to kernel stack (spi)
-	clrpsw	#0x80	    ->	nop
-	.endm
-#else	/* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */
-	.macro	SWITCH_TO_KERNEL_STACK
-	push	r0		; save r0 for working
-	mvfc	r0, psw
-	and3	r0, r0, #0x00ff7f
-	mvtc	r0, psw
-	slli	r0, #16
-	bltz	r0, 1f		; check BSM-bit
-;
-	;; called from kernel context: previous stack = spi
-	pop	r0		; retrieve r0
-	bra	2f
-	.fillinsn
-1:
-	;; called from user context: previous stack = spu
-	mvfc	r0, cr3		; spu
-	addi	r0, #4
-	mvtc	r0, cr3		; spu
-	ld	r0, @(-4,r0)	; retrieve r0
-	.fillinsn
-2:
-	.endm
-#endif	/* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */
-
-#endif	/* __ASSEMBLY__ */
-
-#endif	/* _ASM_M32R_ASSEMBLER_H */
diff --git a/arch/m32r/include/asm/atomic.h b/arch/m32r/include/asm/atomic.h
deleted file mode 100644
index 8bf67e55ff54..000000000000
--- a/arch/m32r/include/asm/atomic.h
+++ /dev/null
@@ -1,275 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_M32R_ATOMIC_H
-#define _ASM_M32R_ATOMIC_H
-
-/*
- *  linux/include/asm-m32r/atomic.h
- *
- *  M32R version:
- *    Copyright (C) 2001, 2002  Hitoshi Yamamoto
- *    Copyright (C) 2004  Hirokazu Takata <takata at linux-m32r.org>
- */
-
-#include <linux/types.h>
-#include <asm/assembler.h>
-#include <asm/cmpxchg.h>
-#include <asm/dcache_clear.h>
-#include <asm/barrier.h>
-
-/*
- * Atomic operations that C can't guarantee us.  Useful for
- * resource counting etc..
- */
-
-#define ATOMIC_INIT(i)	{ (i) }
-
-/**
- * atomic_read - read atomic variable
- * @v: pointer of type atomic_t
- *
- * Atomically reads the value of @v.
- */
-#define atomic_read(v)	READ_ONCE((v)-&g