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Diffstat (limited to 'arch/cris/arch-v32/kernel/process.c')
-rw-r--r--arch/cris/arch-v32/kernel/process.c180
1 files changed, 0 insertions, 180 deletions
diff --git a/arch/cris/arch-v32/kernel/process.c b/arch/cris/arch-v32/kernel/process.c
deleted file mode 100644
index a02f276d0ed4..000000000000
--- a/arch/cris/arch-v32/kernel/process.c
+++ /dev/null
@@ -1,180 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2000-2003 Axis Communications AB
- *
- * Authors: Bjorn Wesen (bjornw@axis.com)
- * Mikael Starvik (starvik@axis.com)
- * Tobias Anderberg (tobiasa@axis.com), CRISv32 port.
- *
- * This file handles the architecture-dependent parts of process handling..
- */
-
-#include <linux/sched.h>
-#include <linux/sched/debug.h>
-#include <linux/sched/task.h>
-#include <linux/sched/task_stack.h>
-#include <linux/slab.h>
-#include <linux/err.h>
-#include <linux/fs.h>
-#include <hwregs/reg_rdwr.h>
-#include <hwregs/reg_map.h>
-#include <hwregs/timer_defs.h>
-#include <hwregs/intr_vect_defs.h>
-#include <linux/ptrace.h>
-
-extern void stop_watchdog(void);
-
-/* We use this if we don't have any better idle routine. */
-void default_idle(void)
-{
- local_irq_enable();
- /* Halt until exception. */
- __asm__ volatile("halt");
-}
-
-/*
- * Free current thread data structures etc..
- */
-
-extern void deconfigure_bp(long pid);
-void exit_thread(struct task_struct *tsk)
-{
- deconfigure_bp(tsk->pid);
-}
-
-/*
- * If the watchdog is enabled, disable interrupts and enter an infinite loop.
- * The watchdog will reset the CPU after 0.1s. If the watchdog isn't enabled
- * then enable it and wait.
- */
-extern void arch_enable_nmi(void);
-
-void
-hard_reset_now(void)
-{
- /*
- * Don't declare this variable elsewhere. We don't want any other
- * code to know about it than the watchdog handler in entry.S and
- * this code, implementing hard reset through the watchdog.
- */
-#if defined(CONFIG_ETRAX_WATCHDOG)
- extern int cause_of_death;
-#endif
-
- printk("*** HARD RESET ***\n");
- local_irq_disable();
-
-#if defined(CONFIG_ETRAX_WATCHDOG)
- cause_of_death = 0xbedead;
-#else
-{
- reg_timer_rw_wd_ctrl wd_ctrl = {0};
-
- stop_watchdog();
-
- wd_ctrl.key = 16; /* Arbitrary key. */
- wd_ctrl.cnt = 1; /* Minimum time. */
- wd_ctrl.cmd = regk_timer_start;
-
- arch_enable_nmi();
- REG_WR(timer, regi_timer0, rw_wd_ctrl, wd_ctrl);
-}
-#endif
-
- while (1)
- ; /* Wait for reset. */
-}
-
-/*
- * Setup the child's kernel stack with a pt_regs and call switch_stack() on it.
- * It will be unnested during _resume and _ret_from_sys_call when the new thread
- * is scheduled.
- *
- * Also setup the thread switching structure which is used to keep
- * thread-specific data during _resumes.
- */
-
-extern asmlinkage void ret_from_fork(void);
-extern asmlinkage void ret_from_kernel_thread(void);
-
-int
-copy_thread(unsigned long clone_flags, unsigned long usp,
- unsigned long arg, struct task_struct *p)
-{
- struct pt_regs *childregs = task_pt_regs(p);
- struct switch_stack *swstack = ((struct switch_stack *) childregs) - 1;
-
- /*
- * Put the pt_regs structure at the end of the new kernel stack page and
- * fix it up. Note: the task_struct doubles as the kernel stack for the
- * task.
- */
- if (unlikely(p->flags & PF_KTHREAD)) {
- memset(swstack, 0,
- sizeof(struct switch_stack) + sizeof(struct pt_regs));
- swstack->r1 = usp;
- swstack->r2 = arg;
- childregs->ccs = 1 << (I_CCS_BITNR + CCS_SHIFT);
- swstack->return_ip = (unsigned long) ret_from_kernel_thread;
- p->thread.ksp = (unsigned long) swstack;
- p->thread.usp = 0;
- return 0;
- }
- *childregs = *current_pt_regs(); /* Struct copy of pt_regs. */
- childregs->r10 = 0; /* Child returns 0 after a fork/clone. */
-
- /* Set a new TLS ?
- * The TLS is in $mof because it is the 5th argument to sys_clone.
- */
- if (p->mm && (clone_flags & CLONE_SETTLS)) {
- task_thread_info(p)->tls = childregs->mof;
- }
-
- /* Put the switch stack right below the pt_regs. */
-
- /* Parameter to ret_from_sys_call. 0 is don't restart the syscall. */
- swstack->r9 = 0;
-
- /*
- * We want to return into ret_from_sys_call after the _resume.
- * ret_from_fork will call ret_from_sys_call.
- */
- swstack->return_ip = (unsigned long) ret_from_fork;
-
- /* Fix the user-mode and kernel-mode stackpointer. */
- p->thread.usp = usp ?: rdusp();
- p->thread.ksp = (unsigned long) swstack;
-
- return 0;
-}
-
-unsigned long
-get_wchan(struct task_struct *p)
-{
- /* TODO */
- return 0;
-}
-#undef last_sched
-#undef first_sched
-
-void show_regs(struct pt_regs * regs)
-{
- unsigned long usp = rdusp();
-
- show_regs_print_info(KERN_DEFAULT);
-
- printk("ERP: %08lx SRP: %08lx CCS: %08lx USP: %08lx MOF: %08lx\n",
- regs->erp, regs->srp, regs->ccs, usp, regs->mof);
-
- 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 r13: %08lx oR10: %08lx\n",
- regs->r12, regs->r13, regs->orig_r10);
-}