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, 130 deletions

diff --git a/arch/m32r/lib/delay.c b/arch/m32r/lib/delay.c
deleted file mode 100644
index ae1fe90892f9..000000000000
--- a/arch/m32r/lib/delay.c
+++ /dev/null
@@ -1,130 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/arch/m32r/lib/delay.c
- *
- * Copyright (c) 2002  Hitoshi Yamamoto, Hirokazu Takata
- * Copyright (c) 2004  Hirokazu Takata
- */
-
-#include <linux/param.h>
-#include <linux/module.h>
-#ifdef CONFIG_SMP
-#include <linux/sched.h>
-#include <asm/current.h>
-#include <asm/smp.h>
-#endif  /* CONFIG_SMP */
-#include <asm/processor.h>
-
-void __delay(unsigned long loops)
-{
-#ifdef CONFIG_ISA_DUAL_ISSUE
-	__asm__ __volatile__ (
-		"beqz	%0, 2f			\n\t"
-		"addi	%0, #-1			\n\t"
-
-		" .fillinsn			\n\t"
-		"1:				\n\t"
-		"cmpz	%0  ||  addi  %0, #-1	\n\t"
-		"bc	2f  ||  cmpz  %0	\n\t"
-		"bc	2f  ||  addi  %0, #-1	\n\t"
-		"cmpz	%0  ||  addi  %0, #-1	\n\t"
-		"bc	2f  ||  cmpz  %0	\n\t"
-		"bnc	1b  ||  addi  %0, #-1	\n\t"
-		" .fillinsn			\n\t"
-		"2:				\n\t"
-		: "+r" (loops)
-		: "r" (0)
-		: "cbit"
-	);
-#else
-	__asm__ __volatile__ (
-		"beqz	%0, 2f			\n\t"
-		" .fillinsn			\n\t"
-		"1:				\n\t"
-		"addi	%0, #-1			\n\t"
-		"blez	%0, 2f			\n\t"
-		"addi	%0, #-1			\n\t"
-		"blez	%0, 2f			\n\t"
-		"addi	%0, #-1			\n\t"
-		"blez	%0, 2f			\n\t"
-		"addi	%0, #-1			\n\t"
-		"bgtz	%0, 1b			\n\t"
-		" .fillinsn			\n\t"
-		"2:				\n\t"
-		: "+r" (loops)
-		: "r" (0)
-	);
-#endif
-}
-
-void __const_udelay(unsigned long xloops)
-{
-#if defined(CONFIG_ISA_M32R2) && defined(CONFIG_ISA_DSP_LEVEL2)
-	/*
-	 * loops [1] = (xloops >> 32) [sec] * loops_per_jiffy [1/jiffy]
-	 *            * HZ [jiffy/sec]
-	 *          = (xloops >> 32) [sec] * (loops_per_jiffy * HZ) [1/sec]
-	 *          = (((xloops * loops_per_jiffy) >> 32) * HZ) [1]
-	 *
-	 * NOTE:
-	 *   - '[]' depicts variable's dimension in the above equation.
-	 *   - "rac" instruction rounds the accumulator in word size.
-	 */
-	__asm__ __volatile__ (
-		"srli	%0, #1				\n\t"
-		"mulwhi	%0, %1	; a0			\n\t"
-		"mulwu1	%0, %1	; a1			\n\t"
-		"sadd		; a0 += (a1 >> 16)	\n\t"
-		"rac	a0, a0, #1			\n\t"
-		"mvfacmi %0, a0				\n\t"
-		: "+r" (xloops)
-		: "r" (current_cpu_data.loops_per_jiffy)
-		: "a0", "a1"
-	);
-#elif defined(CONFIG_ISA_M32R2) || defined(CONFIG_ISA_M32R)
-	/*
-	 * u64 ull;
-	 * ull = (u64)xloops * (u64)current_cpu_data.loops_per_jiffy;
-	 * xloops = (ull >> 32);
-	 */
-	__asm__ __volatile__ (
-		"and3	r4, %0, #0xffff		\n\t"
-		"and3	r5, %1, #0xffff		\n\t"
-		"mul	r4, r5			\n\t"
-		"srl3	r6, %0, #16		\n\t"
-		"srli	r4, #16			\n\t"
-		"mul	r5, r6			\n\t"
-		"add	r4, r5			\n\t"
-		"and3	r5, %0, #0xffff		\n\t"
-		"srl3	r6, %1, #16		\n\t"
-		"mul	r5, r6			\n\t"
-		"add	r4, r5			\n\t"
-		"srl3	r5, %0, #16		\n\t"
-		"srli	r4, #16			\n\t"
-		"mul	r5, r6			\n\t"
-		"add	r4, r5			\n\t"
-		"mv	%0, r4			\n\t"
-		: "+r" (xloops)
-		: "r" (current_cpu_data.loops_per_jiffy)
-		: "r4", "r5", "r6"
-	);
-#else
-#error unknown isa configuration
-#endif
-	__delay(xloops * HZ);
-}
-
-void __udelay(unsigned long usecs)
-{
-	__const_udelay(usecs * 0x000010c7);  /* 2**32 / 1000000 (rounded up) */
-}
-
-void __ndelay(unsigned long nsecs)
-{
-	__const_udelay(nsecs * 0x00005);  /* 2**32 / 1000000000 (rounded up) */
-}
-
-EXPORT_SYMBOL(__delay);
-EXPORT_SYMBOL(__const_udelay);
-EXPORT_SYMBOL(__udelay);
-EXPORT_SYMBOL(__ndelay);