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, 89 deletions

diff --git a/arch/m32r/mm/cache.c b/arch/m32r/mm/cache.c
deleted file mode 100644
index 0d1ae744e56f..000000000000
--- a/arch/m32r/mm/cache.c
+++ /dev/null
@@ -1,89 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  linux/arch/m32r/mm/cache.c
- *
- *  Copyright (C) 2002-2005  Hirokazu Takata, Hayato Fujiwara
- */
-
-#include <asm/pgtable.h>
-
-#undef MCCR
-
-#if defined(CONFIG_CHIP_XNUX2) || defined(CONFIG_CHIP_M32700) \
-        || defined(CONFIG_CHIP_VDEC2) || defined(CONFIG_CHIP_OPSP)
-/* Cache Control Register */
-#define MCCR            ((volatile unsigned long*)0xfffffffc)
-#define MCCR_CC         (1UL << 7)      /* Cache mode modify bit */
-#define MCCR_IIV        (1UL << 6)      /* I-cache invalidate */
-#define MCCR_DIV        (1UL << 5)      /* D-cache invalidate */
-#define MCCR_DCB        (1UL << 4)      /* D-cache copy back */
-#define MCCR_ICM        (1UL << 1)      /* I-cache mode [0:off,1:on] */
-#define MCCR_DCM        (1UL << 0)      /* D-cache mode [0:off,1:on] */
-#define MCCR_ICACHE_INV         (MCCR_CC|MCCR_IIV)
-#define MCCR_DCACHE_CB          (MCCR_CC|MCCR_DCB)
-#define MCCR_DCACHE_CBINV       (MCCR_CC|MCCR_DIV|MCCR_DCB)
-#define CHECK_MCCR(mccr)        (mccr = *MCCR)
-#elif defined(CONFIG_CHIP_M32102)
-#define MCCR            ((volatile unsigned char*)0xfffffffe)
-#define MCCR_IIV        (1UL << 0)      /* I-cache invalidate */
-#define MCCR_ICACHE_INV         MCCR_IIV
-#elif defined(CONFIG_CHIP_M32104)
-#define MCCR            ((volatile unsigned short*)0xfffffffe)
-#define MCCR_IIV        (1UL << 8)      /* I-cache invalidate */
-#define MCCR_DIV        (1UL << 9)      /* D-cache invalidate */
-#define MCCR_DCB        (1UL << 10)     /* D-cache copy back */
-#define MCCR_ICM        (1UL << 0)      /* I-cache mode [0:off,1:on] */
-#define MCCR_DCM        (1UL << 1)      /* D-cache mode [0:off,1:on] */
-#define MCCR_ICACHE_INV         MCCR_IIV
-#define MCCR_DCACHE_CB          MCCR_DCB
-#define MCCR_DCACHE_CBINV       (MCCR_DIV|MCCR_DCB)
-#endif
-
-#ifndef MCCR
-#error Unknown cache type.
-#endif
-
-
-/* Copy back and invalidate D-cache and invalidate I-cache all */
-void _flush_cache_all(void)
-{
-#if defined(CONFIG_CHIP_M32102)
-        unsigned char mccr;
-        *MCCR = MCCR_ICACHE_INV;
-#elif defined(CONFIG_CHIP_M32104)
-        unsigned short mccr;
-
-        /* Copyback and invalidate D-cache */
-        /* Invalidate I-cache */
-        *MCCR |= (MCCR_ICACHE_INV | MCCR_DCACHE_CBINV);
-#else
-        unsigned long mccr;
-
-        /* Copyback and invalidate D-cache */
-        /* Invalidate I-cache */
-        *MCCR = MCCR_ICACHE_INV | MCCR_DCACHE_CBINV;
-#endif
-        while ((mccr = *MCCR) & MCCR_IIV); /* loop while invalidating... */
-}
-
-/* Copy back D-cache and invalidate I-cache all */
-void _flush_cache_copyback_all(void)
-{
-#if defined(CONFIG_CHIP_M32102)
-        unsigned char mccr;
-        *MCCR = MCCR_ICACHE_INV;
-#elif defined(CONFIG_CHIP_M32104)
-        unsigned short mccr;
-
-        /* Copyback and invalidate D-cache */
-        /* Invalidate I-cache */
-        *MCCR |= (MCCR_ICACHE_INV | MCCR_DCACHE_CB);
-#else
-        unsigned long mccr;
-
-        /* Copyback D-cache */
-        /* Invalidate I-cache */
-        *MCCR = MCCR_ICACHE_INV | MCCR_DCACHE_CB;
-#endif
-        while ((mccr = *MCCR) & MCCR_IIV); /* loop while invalidating... */
-}