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, 163 deletions

diff --git a/arch/m32r/mm/discontig.c b/arch/m32r/mm/discontig.c
deleted file mode 100644
index eb8e7966dcaf..000000000000
--- a/arch/m32r/mm/discontig.c
+++ /dev/null
@@ -1,163 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  linux/arch/m32r/mm/discontig.c
- *
- *  Discontig memory support
- *
- *  Copyright (c) 2003  Hitoshi Yamamoto
- */
-
-#include <linux/mm.h>
-#include <linux/bootmem.h>
-#include <linux/mmzone.h>
-#include <linux/initrd.h>
-#include <linux/nodemask.h>
-#include <linux/module.h>
-#include <linux/pfn.h>
-
-#include <asm/setup.h>
-
-extern char _end[];
-
-struct pglist_data *node_data[MAX_NUMNODES];
-EXPORT_SYMBOL(node_data);
-
-pg_data_t m32r_node_data[MAX_NUMNODES];
-
-/* Memory profile */
-typedef struct {
-	unsigned long start_pfn;
-	unsigned long pages;
-	unsigned long holes;
-	unsigned long free_pfn;
-} mem_prof_t;
-static mem_prof_t mem_prof[MAX_NUMNODES];
-
-extern unsigned long memory_start;
-extern unsigned long memory_end;
-
-static void __init mem_prof_init(void)
-{
-	unsigned long start_pfn, holes, free_pfn;
-	const unsigned long zone_alignment = 1UL << (MAX_ORDER - 1);
-	unsigned long ul;
-	mem_prof_t *mp;
-
-	/* Node#0 SDRAM */
-	mp = &mem_prof[0];
-	mp->start_pfn = PFN_UP(CONFIG_MEMORY_START);
-	mp->pages = PFN_DOWN(memory_end - memory_start);
-	mp->holes = 0;
-	mp->free_pfn = PFN_UP(__pa(_end));
-
-	/* Node#1 internal SRAM */
-	mp = &mem_prof[1];
-	start_pfn = free_pfn = PFN_UP(CONFIG_IRAM_START);
-	holes = 0;
-	if (start_pfn & (zone_alignment - 1)) {
-		ul = zone_alignment;
-		while (start_pfn >= ul)
-			ul += zone_alignment;
-
-		start_pfn = ul - zone_alignment;
-		holes = free_pfn - start_pfn;
-	}
-
-	mp->start_pfn = start_pfn;
-	mp->pages = PFN_DOWN(CONFIG_IRAM_SIZE) + holes;
-	mp->holes = holes;
-	mp->free_pfn = PFN_UP(CONFIG_IRAM_START);
-}
-
-unsigned long __init setup_memory(void)
-{
-	unsigned long bootmap_size;
-	unsigned long min_pfn;
-	int nid;
-	mem_prof_t *mp;
-
-	max_low_pfn = 0;
-	min_low_pfn = -1;
-
-	mem_prof_init();
-
-	for_each_online_node(nid) {
-		mp = &mem_prof[nid];
-		NODE_DATA(nid)=(pg_data_t *)&m32r_node_data[nid];
-		NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
-		min_pfn = mp->start_pfn;
-		max_pfn = mp->start_pfn + mp->pages;
-		bootmap_size = init_bootmem_node(NODE_DATA(nid), mp->free_pfn,
-			mp->start_pfn, max_pfn);
-
-		free_bootmem_node(NODE_DATA(nid), PFN_PHYS(mp->start_pfn),
-			PFN_PHYS(mp->pages));
-
-		reserve_bootmem_node(NODE_DATA(nid), PFN_PHYS(mp->start_pfn),
-			PFN_PHYS(mp->free_pfn - mp->start_pfn) + bootmap_size,
-			BOOTMEM_DEFAULT);
-
-		if (max_low_pfn < max_pfn)
-			max_low_pfn = max_pfn;
-
-		if (min_low_pfn > min_pfn)
-			min_low_pfn = min_pfn;
-	}
-
-#ifdef CONFIG_BLK_DEV_INITRD
-	if (LOADER_TYPE && INITRD_START) {
-		if (INITRD_START + INITRD_SIZE <= PFN_PHYS(max_low_pfn)) {
-			reserve_bootmem_node(NODE_DATA(0), INITRD_START,
-				INITRD_SIZE, BOOTMEM_DEFAULT);
-			initrd_start = INITRD_START + PAGE_OFFSET;
-			initrd_end = initrd_start + INITRD_SIZE;
-			printk("initrd:start[%08lx],size[%08lx]\n",
-				initrd_start, INITRD_SIZE);
-		} else {
-			printk("initrd extends beyond end of memory "
-				"(0x%08lx > 0x%08llx)\ndisabling initrd\n",
-				INITRD_START + INITRD_SIZE,
-			        (unsigned long long)PFN_PHYS(max_low_pfn));
-
-			initrd_start = 0;
-		}
-	}
-#endif	/* CONFIG_BLK_DEV_INITRD */
-
-	return max_low_pfn;
-}
-
-#define START_PFN(nid)		(NODE_DATA(nid)->bdata->node_min_pfn)
-#define MAX_LOW_PFN(nid)	(NODE_DATA(nid)->bdata->node_low_pfn)
-
-void __init zone_sizes_init(void)
-{
-	unsigned long zones_size[MAX_NR_ZONES], zholes_size[MAX_NR_ZONES];
-	unsigned long low, start_pfn;
-	int nid, i;
-	mem_prof_t *mp;
-
-	for_each_online_node(nid) {
-		mp = &mem_prof[nid];
-		for (i = 0 ; i < MAX_NR_ZONES ; i++) {
-			zones_size[i] = 0;
-			zholes_size[i] = 0;
-		}
-		start_pfn = START_PFN(nid);
-		low = MAX_LOW_PFN(nid);
-		zones_size[ZONE_DMA] = low - start_pfn;
-		zholes_size[ZONE_DMA] = mp->holes;
-
-		node_set_state(nid, N_NORMAL_MEMORY);
-		free_area_init_node(nid, zones_size, start_pfn, zholes_size);
-	}
-
-	/*
-	 * For test
-	 *  Use all area of internal RAM.
-	 *  see __alloc_pages()
-	 */
-	NODE_DATA(1)->node_zones->watermark[WMARK_MIN] = 0;
-	NODE_DATA(1)->node_zones->watermark[WMARK_LOW] = 0;
-	NODE_DATA(1)->node_zones->watermark[WMARK_HIGH] = 0;
-}