c6x: remove architecture

[linux-2.6-block.git] / arch / c6x / kernel / process.c

diff --git a/arch/c6x/kernel/process.c b/arch/c6x/kernel/process.c
deleted file mode 100644 (file)
index 9f4fd6a..0000000
--- a/arch/c6x/kernel/process.c
+++ /dev/null
@@ -1,151 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- *  Port on Texas Instruments TMS320C6x architecture
- *
- *  Copyright (C) 2004, 2006, 2009, 2010, 2011 Texas Instruments Incorporated
- *  Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
- */
-#include <linux/module.h>
-#include <linux/unistd.h>
-#include <linux/ptrace.h>
-#include <linux/init_task.h>
-#include <linux/tick.h>
-#include <linux/mqueue.h>
-#include <linux/syscalls.h>
-#include <linux/reboot.h>
-#include <linux/sched/task.h>
-#include <linux/sched/task_stack.h>
-
-#include <asm/syscalls.h>
-
-/* hooks for board specific support */
-void   (*c6x_restart)(void);
-void   (*c6x_halt)(void);
-
-extern asmlinkage void ret_from_fork(void);
-extern asmlinkage void ret_from_kernel_thread(void);
-
-/*
- * power off function, if any
- */
-void (*pm_power_off)(void);
-EXPORT_SYMBOL(pm_power_off);
-
-void arch_cpu_idle(void)
-{
-       unsigned long tmp;
-
-       /*
-        * Put local_irq_enable and idle in same execute packet
-        * to make them atomic and avoid race to idle with
-        * interrupts enabled.
-        */
-       asm volatile ("   mvc .s2 CSR,%0\n"
-                     "   or  .d2 1,%0,%0\n"
-                     "   mvc .s2 %0,CSR\n"
-                     "|| idle\n"
-                     : "=b"(tmp));
-}
-
-static void halt_loop(void)
-{
-       printk(KERN_EMERG "System Halted, OK to turn off power\n");
-       local_irq_disable();
-       while (1)
-               asm volatile("idle\n");
-}
-
-void machine_restart(char *__unused)
-{
-       if (c6x_restart)
-               c6x_restart();
-       halt_loop();
-}
-
-void machine_halt(void)
-{
-       if (c6x_halt)
-               c6x_halt();
-       halt_loop();
-}
-
-void machine_power_off(void)
-{
-       if (pm_power_off)
-               pm_power_off();
-       halt_loop();
-}
-
-void flush_thread(void)
-{
-}
-
-/*
- * Do necessary setup to start up a newly executed thread.
- */
-void start_thread(struct pt_regs *regs, unsigned int pc, unsigned long usp)
-{
-       /*
-        * The binfmt loader will setup a "full" stack, but the C6X
-        * operates an "empty" stack. So we adjust the usp so that
-        * argc doesn't get destroyed if an interrupt is taken before
-        * it is read from the stack.
-        *
-        * NB: Library startup code needs to match this.
-        */
-       usp -= 8;
-
-       regs->pc  = pc;
-       regs->sp  = usp;
-       regs->tsr |= 0x40; /* set user mode */
-       current->thread.usp = usp;
-}
-
-/*
- * Copy a new thread context in its stack.
- */
-int copy_thread(unsigned long clone_flags, unsigned long usp,
-               unsigned long ustk_size, struct task_struct *p,
-               unsigned long tls)
-{
-       struct pt_regs *childregs;
-
-       childregs = task_pt_regs(p);
-
-       if (unlikely(p->flags & PF_KTHREAD)) {
-               /* case of  __kernel_thread: we return to supervisor space */
-               memset(childregs, 0, sizeof(struct pt_regs));
-               childregs->sp = (unsigned long)(childregs + 1);
-               p->thread.pc = (unsigned long) ret_from_kernel_thread;
-               childregs->a0 = usp;            /* function */
-               childregs->a1 = ustk_size;      /* argument */
-       } else {
-               /* Otherwise use the given stack */
-               *childregs = *current_pt_regs();
-               if (usp)
-                       childregs->sp = usp;
-               p->thread.pc = (unsigned long) ret_from_fork;
-       }
-
-       /* Set usp/ksp */
-       p->thread.usp = childregs->sp;
-       thread_saved_ksp(p) = (unsigned long)childregs - 8;
-       p->thread.wchan = p->thread.pc;
-#ifdef __DSBT__
-       {
-               unsigned long dp;
-
-               asm volatile ("mv .S2 b14,%0\n" : "=b"(dp));
-
-               thread_saved_dp(p) = dp;
-               if (usp == -1)
-                       childregs->dp = dp;
-       }
-#endif
-       return 0;
-}
-
-unsigned long get_wchan(struct task_struct *p)
-{
-       return p->thread.wchan;
-}