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, 424 deletions

diff --git a/arch/m32r/kernel/setup.c b/arch/m32r/kernel/setup.c
deleted file mode 100644
index b72d5db39f00..000000000000
--- a/arch/m32r/kernel/setup.c
+++ /dev/null
@@ -1,424 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  linux/arch/m32r/kernel/setup.c
- *
- *  Setup routines for Renesas M32R
- *
- *  Copyright (c) 2001, 2002  Hiroyuki Kondo, Hirokazu Takata,
- *                            Hitoshi Yamamoto
- */
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/stddef.h>
-#include <linux/fs.h>
-#include <linux/sched/mm.h>
-#include <linux/ioport.h>
-#include <linux/mm.h>
-#include <linux/bootmem.h>
-#include <linux/console.h>
-#include <linux/initrd.h>
-#include <linux/major.h>
-#include <linux/root_dev.h>
-#include <linux/seq_file.h>
-#include <linux/timex.h>
-#include <linux/screen_info.h>
-#include <linux/cpu.h>
-#include <linux/nodemask.h>
-#include <linux/pfn.h>
-
-#include <asm/processor.h>
-#include <asm/pgtable.h>
-#include <asm/io.h>
-#include <asm/mmu_context.h>
-#include <asm/m32r.h>
-#include <asm/setup.h>
-#include <asm/sections.h>
-
-#ifdef CONFIG_MMU
-extern void init_mmu(void);
-#endif
-
-extern char _end[];
-
-/*
- * Machine setup..
- */
-struct cpuinfo_m32r boot_cpu_data;
-
-#ifdef CONFIG_BLK_DEV_RAM
-extern int rd_doload;	/* 1 = load ramdisk, 0 = don't load */
-extern int rd_prompt;	/* 1 = prompt for ramdisk, 0 = don't prompt */
-extern int rd_image_start;	/* starting block # of image */
-#endif
-
-#if defined(CONFIG_VGA_CONSOLE)
-struct screen_info screen_info = {
-	.orig_video_lines      = 25,
-	.orig_video_cols       = 80,
-	.orig_video_mode       = 0,
-	.orig_video_ega_bx     = 0,
-	.orig_video_isVGA      = 1,
-	.orig_video_points     = 8
-};
-#endif
-
-extern int root_mountflags;
-
-static char __initdata command_line[COMMAND_LINE_SIZE];
-
-static struct resource data_resource = {
-	.name   = "Kernel data",
-	.start  = 0,
-	.end    = 0,
-	.flags  = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
-};
-
-static struct resource code_resource = {
-	.name   = "Kernel code",
-	.start  = 0,
-	.end    = 0,
-	.flags  = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
-};
-
-unsigned long memory_start;
-EXPORT_SYMBOL(memory_start);
-
-unsigned long memory_end;
-EXPORT_SYMBOL(memory_end);
-
-void __init setup_arch(char **);
-int get_cpuinfo(char *);
-
-static __inline__ void parse_mem_cmdline(char ** cmdline_p)
-{
-	char c = ' ';
-	char *to = command_line;
-	char *from = COMMAND_LINE;
-	int len = 0;
-	int usermem = 0;
-
-	/* Save unparsed command line copy for /proc/cmdline */
-	memcpy(boot_command_line, COMMAND_LINE, COMMAND_LINE_SIZE);
-	boot_command_line[COMMAND_LINE_SIZE-1] = '\0';
-
-	memory_start = (unsigned long)CONFIG_MEMORY_START+PAGE_OFFSET;
-	memory_end = memory_start+(unsigned long)CONFIG_MEMORY_SIZE;
-
-	for ( ; ; ) {
-		if (c == ' ' && !memcmp(from, "mem=", 4)) {
-			if (to != command_line)
-				to--;
-
-			{
-				unsigned long mem_size;
-
-				usermem = 1;
-				mem_size = memparse(from+4, &from);
-				memory_end = memory_start + mem_size;
-			}
-		}
-		c = *(from++);
-		if (!c)
-			break;
-
-		if (COMMAND_LINE_SIZE <= ++len)
-			break;
-
-		*(to++) = c;
-	}
-	*to = '\0';
-	*cmdline_p = command_line;
-	if (usermem)
-		printk(KERN_INFO "user-defined physical RAM map:\n");
-}
-
-#ifndef CONFIG_DISCONTIGMEM
-static unsigned long __init setup_memory(void)
-{
-	unsigned long start_pfn, max_low_pfn, bootmap_size;
-
-	start_pfn = PFN_UP( __pa(_end) );
-	max_low_pfn = PFN_DOWN( __pa(memory_end) );
-
-	/*
-	 * Initialize the boot-time allocator (with low memory only):
-	 */
-	bootmap_size = init_bootmem_node(NODE_DATA(0), start_pfn,
-		CONFIG_MEMORY_START>>PAGE_SHIFT, max_low_pfn);
-
-	/*
-	 * Register fully available low RAM pages with the bootmem allocator.
-	 */
-	{
-		unsigned long curr_pfn;
-		unsigned long last_pfn;
-		unsigned long pages;
-
-		/*
-		 * We are rounding up the start address of usable memory:
-		 */
-		curr_pfn = PFN_UP(__pa(memory_start));
-
-		/*
-		 * ... and at the end of the usable range downwards:
-		 */
-		last_pfn = PFN_DOWN(__pa(memory_end));
-
-		if (last_pfn > max_low_pfn)
-			last_pfn = max_low_pfn;
-
-		pages = last_pfn - curr_pfn;
-		free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(pages));
-	}
-
-	/*
-	 * Reserve the kernel text and
-	 * Reserve the bootmem bitmap. We do this in two steps (first step
-	 * was init_bootmem()), because this catches the (definitely buggy)
-	 * case of us accidentally initializing the bootmem allocator with
-	 * an invalid RAM area.
-	 */
-	reserve_bootmem(CONFIG_MEMORY_START + PAGE_SIZE,
-		(PFN_PHYS(start_pfn) + bootmap_size + PAGE_SIZE - 1)
-		- CONFIG_MEMORY_START,
-		BOOTMEM_DEFAULT);
-
-	/*
-	 * reserve physical page 0 - it's a special BIOS page on many boxes,
-	 * enabling clean reboots, SMP operation, laptop functions.
-	 */
-	reserve_bootmem(CONFIG_MEMORY_START, PAGE_SIZE, BOOTMEM_DEFAULT);
-
-	/*
-	 * reserve memory hole
-	 */
-#ifdef CONFIG_MEMHOLE
-	reserve_bootmem(CONFIG_MEMHOLE_START, CONFIG_MEMHOLE_SIZE,
-			BOOTMEM_DEFAULT);
-#endif
-
-#ifdef CONFIG_BLK_DEV_INITRD
-	if (LOADER_TYPE && INITRD_START) {
-		if (INITRD_START + INITRD_SIZE <= (max_low_pfn << PAGE_SHIFT)) {
-			reserve_bootmem(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%08lx)\ndisabling initrd\n",
-				INITRD_START + INITRD_SIZE,
-				max_low_pfn << PAGE_SHIFT);
-
-			initrd_start = 0;
-		}
-	}
-#endif
-
-	return max_low_pfn;
-}
-#else	/* CONFIG_DISCONTIGMEM */
-extern unsigned long setup_memory(void);
-#endif	/* CONFIG_DISCONTIGMEM */
-
-void __init setup_arch(char **cmdline_p)
-{
-	ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
-
-	boot_cpu_data.cpu_clock = M32R_CPUCLK;
-	boot_cpu_data.bus_clock = M32R_BUSCLK;
-	boot_cpu_data.timer_divide = M32R_TIMER_DIVIDE;
-
-#ifdef CONFIG_BLK_DEV_RAM
-	rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
-	rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
-	rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0);
-#endif
-
-	if (!MOUNT_ROOT_RDONLY)
-		root_mountflags &= ~MS_RDONLY;
-
-#ifdef CONFIG_VT
-#if defined(CONFIG_VGA_CONSOLE)
-	conswitchp = &vga_con;
-#elif defined(CONFIG_DUMMY_CONSOLE)
-	conswitchp = &dummy_con;
-#endif
-#endif
-
-#ifdef CONFIG_DISCONTIGMEM
-	nodes_clear(node_online_map);
-	node_set_online(0);
-	node_set_online(1);
-#endif	/* CONFIG_DISCONTIGMEM */
-
-	init_mm.start_code = (unsigned long) _text;
-	init_mm.end_code = (unsigned long) _etext;
-	init_mm.end_data = (unsigned long) _edata;
-	init_mm.brk = (unsigned long) _end;
-
-	code_resource.start = virt_to_phys(_text);
-	code_resource.end = virt_to_phys(_etext)-1;
-	data_resource.start = virt_to_phys(_etext);
-	data_resource.end = virt_to_phys(_edata)-1;
-
-	parse_mem_cmdline(cmdline_p);
-
-	setup_memory();
-
-	paging_init();
-}
-
-static struct cpu cpu_devices[NR_CPUS];
-
-static int __init topology_init(void)
-{
-	int i;
-
-	for_each_present_cpu(i)
-		register_cpu(&cpu_devices[i], i);
-
-	return 0;
-}
-
-subsys_initcall(topology_init);
-
-#ifdef CONFIG_PROC_FS
-/*
- *	Get CPU information for use by the procfs.
- */
-static int show_cpuinfo(struct seq_file *m, void *v)
-{
-	struct cpuinfo_m32r *c = v;
-	unsigned long cpu = c - cpu_data;
-
-#ifdef CONFIG_SMP
-	if (!cpu_online(cpu))
-		return 0;
-#endif	/* CONFIG_SMP */
-
-	seq_printf(m, "processor\t: %ld\n", cpu);
-
-#if defined(CONFIG_CHIP_VDEC2)
-	seq_printf(m, "cpu family\t: VDEC2\n"
-		"cache size\t: Unknown\n");
-#elif defined(CONFIG_CHIP_M32700)
-	seq_printf(m,"cpu family\t: M32700\n"
-		"cache size\t: I-8KB/D-8KB\n");
-#elif defined(CONFIG_CHIP_M32102)
-	seq_printf(m,"cpu family\t: M32102\n"
-		"cache size\t: I-8KB\n");
-#elif defined(CONFIG_CHIP_OPSP)
-	seq_printf(m,"cpu family\t: OPSP\n"
-		"cache size\t: I-8KB/D-8KB\n");
-#elif defined(CONFIG_CHIP_MP)
-	seq_printf(m, "cpu family\t: M32R-MP\n"
-		"cache size\t: I-xxKB/D-xxKB\n");
-#elif  defined(CONFIG_CHIP_M32104)
-	seq_printf(m,"cpu family\t: M32104\n"
-		"cache size\t: I-8KB/D-8KB\n");
-#else
-	seq_printf(m, "cpu family\t: Unknown\n");
-#endif
-	seq_printf(m, "bogomips\t: %lu.%02lu\n",
-		c->loops_per_jiffy/(500000/HZ),
-		(c->loops_per_jiffy/(5000/HZ)) % 100);
-#if defined(CONFIG_PLAT_MAPPI)
-	seq_printf(m, "Machine\t\t: Mappi Evaluation board\n");
-#elif defined(CONFIG_PLAT_MAPPI2)
-	seq_printf(m, "Machine\t\t: Mappi-II Evaluation board\n");
-#elif defined(CONFIG_PLAT_MAPPI3)
-	seq_printf(m, "Machine\t\t: Mappi-III Evaluation board\n");
-#elif defined(CONFIG_PLAT_M32700UT)
-	seq_printf(m, "Machine\t\t: M32700UT Evaluation board\n");
-#elif defined(CONFIG_PLAT_OPSPUT)
-	seq_printf(m, "Machine\t\t: OPSPUT Evaluation board\n");
-#elif defined(CONFIG_PLAT_USRV)
-	seq_printf(m, "Machine\t\t: uServer\n");
-#elif defined(CONFIG_PLAT_OAKS32R)
-	seq_printf(m, "Machine\t\t: OAKS32R\n");
-#elif  defined(CONFIG_PLAT_M32104UT)
-	seq_printf(m, "Machine\t\t: M3T-M32104UT uT Engine board\n");
-#else
-	seq_printf(m, "Machine\t\t: Unknown\n");
-#endif
-
-#define PRINT_CLOCK(name, value)				\
-	seq_printf(m, name " clock\t: %d.%02dMHz\n",		\
-		((value) / 1000000), ((value) % 1000000)/10000)
-
-	PRINT_CLOCK("CPU", (int)c->cpu_clock);
-	PRINT_CLOCK("Bus", (int)c->bus_clock);
-
-	seq_printf(m, "\n");
-
-	return 0;
-}
-
-static void *c_start(struct seq_file *m, loff_t *pos)
-{
-	return *pos < NR_CPUS ? cpu_data + *pos : NULL;
-}
-
-static void *c_next(struct seq_file *m, void *v, loff_t *pos)
-{
-	++*pos;
-	return c_start(m, pos);
-}
-
-static void c_stop(struct seq_file *m, void *v)
-{
-}
-
-const struct seq_operations cpuinfo_op = {
-	.start = c_start,
-	.next = c_next,
-	.stop = c_stop,
-	.show = show_cpuinfo,
-};
-#endif	/* CONFIG_PROC_FS */
-
-unsigned long cpu_initialized __initdata = 0;
-
-/*
- * cpu_init() initializes state that is per-CPU. Some data is already
- * initialized (naturally) in the bootstrap process.
- * We reload them nevertheless, this function acts as a
- * 'CPU state barrier', nothing should get across.
- */
-#if defined(CONFIG_CHIP_VDEC2) || defined(CONFIG_CHIP_XNUX2)	\
-	|| defined(CONFIG_CHIP_M32700) || defined(CONFIG_CHIP_M32102) \
-	|| defined(CONFIG_CHIP_OPSP) || defined(CONFIG_CHIP_M32104)
-void __init cpu_init (void)
-{
-	int cpu_id = smp_processor_id();
-
-	if (test_and_set_bit(cpu_id, &cpu_initialized)) {
-		printk(KERN_WARNING "CPU#%d already initialized!\n", cpu_id);
-		for ( ; ; )
-			local_irq_enable();
-	}
-	printk(KERN_INFO "Initializing CPU#%d\n", cpu_id);
-
-	/* Set up and load the per-CPU TSS and LDT */
-	mmgrab(&init_mm);
-	current->active_mm = &init_mm;
-	if (current->mm)
-		BUG();
-
-	/* Force FPU initialization */
-	current_thread_info()->status = 0;
-	clear_used_math();
-
-#ifdef CONFIG_MMU
-	/* Set up MMU */
-	init_mmu();
-#endif
-
-	/* Set up ICUIMASK */
-	outl(0x00070000, M32R_ICU_IMASK_PORTL);		/* imask=111 */
-}
-#endif	/* defined(CONFIG_CHIP_VDEC2) ... */