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, 177 deletions

diff --git a/arch/m32r/boot/compressed/head.S b/arch/m32r/boot/compressed/head.S
deleted file mode 100644
index 39b693640375..000000000000
--- a/arch/m32r/boot/compressed/head.S
+++ /dev/null
@@ -1,177 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- *  linux/arch/m32r/boot/compressed/head.S
- *
- *  Copyright (c) 2001-2003	Hiroyuki Kondo, Hirokazu Takata,
- *				Hitoshi Yamamoto, Takeo Takahashi
- *  Copyright (c) 2004		Hirokazu Takata
- */
-
-	.text
-#include <linux/linkage.h>
-#include <asm/addrspace.h>
-#include <asm/page.h>
-#include <asm/assembler.h>
-
-	/*
-	 * This code can be loaded anywhere, as long as output will not
-	 * overlap it.
-	 *
-	 * NOTE: This head.S should *NOT* be compiled with -fpic.
-	 *
-	 */
-
-	.global	startup
-	.global __bss_start, _ebss, end, zimage_data, zimage_len
-	__ALIGN
-startup:
-	ldi	r0, #0x0000			/* SPI, disable EI */
-	mvtc	r0, psw
-
-	ldi	r12, #-8
-	bl	1f
-	.fillinsn
-1:
-	seth	r1, #high(CONFIG_MEMORY_START + 0x00400000) /* Start address */
-	add	r12, r14				/* Real address */
-	sub	r12, r1					/* difference */
-
-	.global got_len
-	seth	r3, #high(_GLOBAL_OFFSET_TABLE_+8)
-	or3	r3, r3, #low(_GLOBAL_OFFSET_TABLE_+12)
-	add	r3, r14
-
-	/* Update the contents of global offset table */
-	ldi	r1, #low(got_len)
-	srli	r1, #2
-	beqz	r1, 2f
-	.fillinsn
-1:
-	ld	r2, @r3
-	add	r2, r12
-	st	r2, @r3
-	addi	r3, #4
-	addi	r1, #-1
-	bnez	r1, 1b
-	.fillinsn
-2:
-	/* XXX: resolve plt */
-
-/*
- * Clear BSS first so that there are no surprises...
- */
-#ifdef CONFIG_ISA_DUAL_ISSUE
-	seth	r2, #high(__bss_start)
-	or3	r2, r2, #low(__bss_start)
-	add	r2, r12
-	seth	r3, #high(_ebss)
-	or3	r3, r3, #low(_ebss)
-	add	r3, r12
-	sub	r3, r2
-
-	; R4 = BSS size in longwords (rounded down)
-	mv	r4, r3		    ||	ldi	r1, #0
-	srli	r4, #4		    ||	addi	r2, #-4
-	beqz	r4, .Lendloop1
-.Lloop1:
-#ifndef CONFIG_CHIP_M32310
-	; Touch memory for the no-write-allocating cache.
-	ld	r0, @(4,r2)
-#endif
-	st	r1, @+r2	    ||	addi	r4, #-1
-	st	r1, @+r2
-	st	r1, @+r2
-	st	r1, @+r2	    ||	cmpeq	r1, r4	; R4 = 0?
-	bnc	.Lloop1
-.Lendloop1:
-	and3	r4, r3, #15
-	addi	r2, #4
-	beqz	r4, .Lendloop2
-.Lloop2:
-	stb	r1, @r2		    ||	addi	r4, #-1
-	addi	r2, #1
-	bnez	r4, .Lloop2
-.Lendloop2:
-
-#else /* not CONFIG_ISA_DUAL_ISSUE */
-	seth	r2, #high(__bss_start)
-	or3	r2, r2, #low(__bss_start)
-	add	r2, r12
-	seth	r3, #high(_ebss)
-	or3	r3, r3, #low(_ebss)
-	add	r3, r12
-	sub	r3, r2
-	mv	r4, r3
-	srli	r4, #2		; R4 = BSS size in longwords (rounded down)
-	ldi	r1, #0		; clear R1 for longwords store
-	addi	r2, #-4		; account for pre-inc store
-	beqz	r4, .Lendloop1	; any more to go?
-.Lloop1:
-	st	r1, @+r2	; yep, zero out another longword
-	addi	r4, #-1		; decrement count
-	bnez	r4, .Lloop1	; go do some more
-.Lendloop1:
-
-#endif /* not CONFIG_ISA_DUAL_ISSUE */
-
-	seth	r1, #high(end)
-	or3	r1, r1, #low(end)
-	add	r1, r12
-	mv	sp, r1
-
-/*
- * decompress the kernel
- */
-	mv	r0, sp
-	srli	r0, 31				/* MMU is ON or OFF */
-        seth	r1, #high(zimage_data)
-        or3	r1, r1, #low(zimage_data)
-	add	r1, r12
-        seth	r2, #high(zimage_len)
-        or3	r2, r2, #low(zimage_len)
-	mv	r3, sp
-
-	bl	decompress_kernel
-
-#if defined(CONFIG_CHIP_M32700) || defined(CONFIG_CHIP_OPSP) || defined(CONFIG_CHIP_VDEC2)
-	/* Cache flush */
-	ldi	r0, -1
-	ldi	r1, 0xd0	; invalidate i-cache, copy back d-cache
-	stb	r1, @r0
-#elif defined(CONFIG_CHIP_M32102)
-	/* Cache flush */
-	ldi	r0, -2
-	ldi	r1, 0x0100	; invalidate
-	stb	r1, @r0
-#elif defined(CONFIG_CHIP_M32104)
-	/* Cache flush */
-	ldi	r0, -2
-	ldi	r1, 0x0700	; invalidate i-cache, copy back d-cache
-	sth	r1, @r0
-#else
-#error "put your cache flush function, please"
-#endif
-
-	mv	r0, sp
-	srli	r0, 31				/* MMU is ON or OFF */
-	slli	r0, 31
-	or3	r0, r0, #0x2000
-	seth	r1, #high(CONFIG_MEMORY_START)
-	or	r0, r1
-	jmp	r0
-
-	.balign 512
-fake_headers_as_bzImage:
-	.short	0
-	.ascii	"HdrS"
-	.short	0x0202
-	.short	0
-	.short	0
-	.byte	0x00, 0x10
-	.short	0
-	.byte	0
-	.byte	1
-	.byte	0x00, 0x80
-	.long	0
-	.long	0
-