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, 152 deletions

diff --git a/arch/m32r/mm/init.c b/arch/m32r/mm/init.c
deleted file mode 100644
index 93abc8c3a46e..000000000000
--- a/arch/m32r/mm/init.c
+++ /dev/null
@@ -1,152 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  linux/arch/m32r/mm/init.c
- *
- *  Copyright (c) 2001, 2002  Hitoshi Yamamoto
- *
- *  Some code taken from sh version.
- *    Copyright (C) 1999  Niibe Yutaka
- *    Based on linux/arch/i386/mm/init.c:
- *      Copyright (C) 1995  Linus Torvalds
- */
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/pagemap.h>
-#include <linux/bootmem.h>
-#include <linux/swap.h>
-#include <linux/highmem.h>
-#include <linux/bitops.h>
-#include <linux/nodemask.h>
-#include <linux/pfn.h>
-#include <linux/gfp.h>
-#include <asm/types.h>
-#include <asm/processor.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/pgalloc.h>
-#include <asm/mmu_context.h>
-#include <asm/setup.h>
-#include <asm/tlb.h>
-#include <asm/sections.h>
-
-pgd_t swapper_pg_dir[1024];
-
-/*
- * Cache of MMU context last used.
- */
-#ifndef CONFIG_SMP
-unsigned long mmu_context_cache_dat;
-#else
-unsigned long mmu_context_cache_dat[NR_CPUS];
-#endif
-
-/*
- * function prototype
- */
-void __init paging_init(void);
-void __init mem_init(void);
-void free_initmem(void);
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long, unsigned long);
-#endif
-
-/* It'd be good if these lines were in the standard header file. */
-#define START_PFN(nid)		(NODE_DATA(nid)->bdata->node_min_pfn)
-#define MAX_LOW_PFN(nid)	(NODE_DATA(nid)->bdata->node_low_pfn)
-
-#ifndef CONFIG_DISCONTIGMEM
-void __init zone_sizes_init(void)
-{
-	unsigned long  zones_size[MAX_NR_ZONES] = {0, };
-	unsigned long  start_pfn;
-
-#ifdef CONFIG_MMU
-	{
-		unsigned long  low;
-		unsigned long  max_dma;
-
-		start_pfn = START_PFN(0);
-		max_dma = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT;
-		low = MAX_LOW_PFN(0);
-
-		if (low < max_dma) {
-			zones_size[ZONE_DMA] = low - start_pfn;
-			zones_size[ZONE_NORMAL] = 0;
-		} else {
-			zones_size[ZONE_DMA] = low - start_pfn;
-			zones_size[ZONE_NORMAL] = low - max_dma;
-		}
-	}
-#else
-	zones_size[ZONE_DMA] = 0 >> PAGE_SHIFT;
-	zones_size[ZONE_NORMAL] = __MEMORY_SIZE >> PAGE_SHIFT;
-	start_pfn = __MEMORY_START >> PAGE_SHIFT;
-#endif /* CONFIG_MMU */
-
-	free_area_init_node(0, zones_size, start_pfn, 0);
-}
-#else	/* CONFIG_DISCONTIGMEM */
-extern void zone_sizes_init(void);
-#endif	/* CONFIG_DISCONTIGMEM */
-
-/*======================================================================*
- * paging_init() : sets up the page tables
- *======================================================================*/
-void __init paging_init(void)
-{
-#ifdef CONFIG_MMU
-	int  i;
-	pgd_t *pg_dir;
-
-	/* We don't need kernel mapping as hardware support that. */
-	pg_dir = swapper_pg_dir;
-
-	for (i = 0 ; i < USER_PTRS_PER_PGD * 2 ; i++)
-		pgd_val(pg_dir[i]) = 0;
-#endif /* CONFIG_MMU */
-	zone_sizes_init();
-}
-
-/*======================================================================*
- * mem_init() :
- * orig : arch/sh/mm/init.c
- *======================================================================*/
-void __init mem_init(void)
-{
-#ifndef CONFIG_MMU
-	extern unsigned long memory_end;
-
-	high_memory = (void *)(memory_end & PAGE_MASK);
-#else
-	high_memory = (void *)__va(PFN_PHYS(MAX_LOW_PFN(0)));
-#endif /* CONFIG_MMU */
-
-	/* clear the zero-page */
-	memset(empty_zero_page, 0, PAGE_SIZE);
-
-	set_max_mapnr(get_num_physpages());
-	free_all_bootmem();
-	mem_init_print_info(NULL);
-}
-
-/*======================================================================*
- * free_initmem() :
- * orig : arch/sh/mm/init.c
- *======================================================================*/
-void free_initmem(void)
-{
-	free_initmem_default(-1);
-}
-
-#ifdef CONFIG_BLK_DEV_INITRD
-/*======================================================================*
- * free_initrd_mem() :
- * orig : arch/sh/mm/init.c
- *======================================================================*/
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
-	free_reserved_area((void *)start, (void *)end, -1, "initrd");
-}
-#endif