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, 154 deletions

diff --git a/arch/m32r/kernel/process.c b/arch/m32r/kernel/process.c
deleted file mode 100644
index a1a4cb136e99..000000000000
--- a/arch/m32r/kernel/process.c
+++ /dev/null
@@ -1,154 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  linux/arch/m32r/kernel/process.c
- *
- *  Copyright (c) 2001, 2002  Hiroyuki Kondo, Hirokazu Takata,
- *                            Hitoshi Yamamoto
- *  Taken from sh version.
- *    Copyright (C) 1995  Linus Torvalds
- *    SuperH version:  Copyright (C) 1999, 2000  Niibe Yutaka & Kaz Kojima
- */
-
-#undef DEBUG_PROCESS
-#ifdef DEBUG_PROCESS
-#define DPRINTK(fmt, args...)  printk("%s:%d:%s: " fmt, __FILE__, __LINE__, \
-  __func__, ##args)
-#else
-#define DPRINTK(fmt, args...)
-#endif
-
-/*
- * This file handles the architecture-dependent parts of process handling..
- */
-
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include <linux/sched/debug.h>
-#include <linux/sched/task.h>
-#include <linux/sched/task_stack.h>
-#include <linux/module.h>
-#include <linux/ptrace.h>
-#include <linux/unistd.h>
-#include <linux/hardirq.h>
-#include <linux/rcupdate.h>
-
-#include <asm/io.h>
-#include <linux/uaccess.h>
-#include <asm/mmu_context.h>
-#include <asm/elf.h>
-#include <asm/m32r.h>
-
-#include <linux/err.h>
-
-void (*pm_power_off)(void) = NULL;
-EXPORT_SYMBOL(pm_power_off);
-
-void machine_restart(char *__unused)
-{
-#if defined(CONFIG_PLAT_MAPPI3)
-        outw(1, (unsigned long)PLD_REBOOT);
-#endif
-
-        printk("Please push reset button!\n");
-        while (1)
-                cpu_relax();
-}
-
-void machine_halt(void)
-{
-        printk("Please push reset button!\n");
-        while (1)
-                cpu_relax();
-}
-
-void machine_power_off(void)
-{
-        /* M32R_FIXME */
-}
-
-void show_regs(struct pt_regs * regs)
-{
-        printk("\n");
-        show_regs_print_info(KERN_DEFAULT);
-
-        printk("BPC[%08lx]:PSW[%08lx]:LR [%08lx]:FP [%08lx]\n", \
-          regs->bpc, regs->psw, regs->lr, regs->fp);
-        printk("BBPC[%08lx]:BBPSW[%08lx]:SPU[%08lx]:SPI[%08lx]\n", \
-          regs->bbpc, regs->bbpsw, regs->spu, regs->spi);
-        printk("R0 [%08lx]:R1 [%08lx]:R2 [%08lx]:R3 [%08lx]\n", \
-          regs->r0, regs->r1, regs->r2, regs->r3);
-        printk("R4 [%08lx]:R5 [%08lx]:R6 [%08lx]:R7 [%08lx]\n", \
-          regs->r4, regs->r5, regs->r6, regs->r7);
-        printk("R8 [%08lx]:R9 [%08lx]:R10[%08lx]:R11[%08lx]\n", \
-          regs->r8, regs->r9, regs->r10, regs->r11);
-        printk("R12[%08lx]\n", \
-          regs->r12);
-
-#if defined(CONFIG_ISA_M32R2) && defined(CONFIG_ISA_DSP_LEVEL2)
-        printk("ACC0H[%08lx]:ACC0L[%08lx]\n", \
-          regs->acc0h, regs->acc0l);
-        printk("ACC1H[%08lx]:ACC1L[%08lx]\n", \
-          regs->acc1h, regs->acc1l);
-#elif defined(CONFIG_ISA_M32R2) || defined(CONFIG_ISA_M32R)
-        printk("ACCH[%08lx]:ACCL[%08lx]\n", \
-          regs->acc0h, regs->acc0l);
-#else
-#error unknown isa configuration
-#endif
-}
-
-void flush_thread(void)
-{
-        DPRINTK("pid = %d\n", current->pid);
-        memset(&current->thread.debug_trap, 0, sizeof(struct debug_trap));
-}
-
-void release_thread(struct task_struct *dead_task)
-{
-        /* do nothing */
-        DPRINTK("pid = %d\n", dead_task->pid);
-}
-
-/* Fill in the fpu structure for a core dump.. */
-int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu)
-{
-        return 0; /* Task didn't use the fpu at all. */
-}
-
-int copy_thread(unsigned long clone_flags, unsigned long spu,
-        unsigned long arg, struct task_struct *tsk)
-{
-        struct pt_regs *childregs = task_pt_regs(tsk);
-        extern void ret_from_fork(void);
-        extern void ret_from_kernel_thread(void);
-
-        if (unlikely(tsk->flags & PF_KTHREAD)) {
-                memset(childregs, 0, sizeof(struct pt_regs));
-                childregs->psw = M32R_PSW_BIE;
-                childregs->r1 = spu;    /* fn */
-                childregs->r0 = arg;
-                tsk->thread.lr = (unsigned long)ret_from_kernel_thread;
-        } else {
-                /* Copy registers */
-                *childregs = *current_pt_regs();
-                if (spu)
-                        childregs->spu = spu;
-                childregs->r0 = 0;      /* Child gets zero as return value */
-                tsk->thread.lr = (unsigned long)ret_from_fork;
-        }
-        tsk->thread.sp = (unsigned long)childregs;
-
-        return 0;
-}
-
-/*
- * These bracket the sleeping functions..
- */
-#define first_sched     ((unsigned long) scheduling_functions_start_here)
-#define last_sched      ((unsigned long) scheduling_functions_end_here)
-
-unsigned long get_wchan(struct task_struct *p)
-{
-        /* M32R_FIXME */
-        return (0);
-}