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proc-init.c

/* MN103E010 Processor initialisation
 *
 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public Licence
 * as published by the Free Software Foundation; either version
 * 2 of the Licence, or (at your option) any later version.
 */
#include <linux/kernel.h>
#include <asm/rtc.h>

/*
 * initialise the on-silicon processor peripherals
 */
asmlinkage void __init processor_init(void)
{
      int loop;

      /* set up the exception table first */
      for (loop = 0x000; loop < 0x400; loop += 8)
            __set_intr_stub(loop, __common_exception);

      __set_intr_stub(EXCEP_ITLBMISS,           itlb_miss);
      __set_intr_stub(EXCEP_DTLBMISS,           dtlb_miss);
      __set_intr_stub(EXCEP_IAERROR,            itlb_aerror);
      __set_intr_stub(EXCEP_DAERROR,            dtlb_aerror);
      __set_intr_stub(EXCEP_BUSERROR,           raw_bus_error);
      __set_intr_stub(EXCEP_DOUBLE_FAULT, double_fault);
      __set_intr_stub(EXCEP_SYSCALL0,           system_call);

      __set_intr_stub(EXCEP_NMI,          nmi_handler);
      __set_intr_stub(EXCEP_WDT,          nmi_handler);
      __set_intr_stub(EXCEP_IRQ_LEVEL0,   irq_handler);
      __set_intr_stub(EXCEP_IRQ_LEVEL1,   irq_handler);
      __set_intr_stub(EXCEP_IRQ_LEVEL2,   irq_handler);
      __set_intr_stub(EXCEP_IRQ_LEVEL3,   irq_handler);
      __set_intr_stub(EXCEP_IRQ_LEVEL4,   irq_handler);
      __set_intr_stub(EXCEP_IRQ_LEVEL5,   irq_handler);
      __set_intr_stub(EXCEP_IRQ_LEVEL6,   irq_handler);

      IVAR0 = EXCEP_IRQ_LEVEL0;
      IVAR1 = EXCEP_IRQ_LEVEL1;
      IVAR2 = EXCEP_IRQ_LEVEL2;
      IVAR3 = EXCEP_IRQ_LEVEL3;
      IVAR4 = EXCEP_IRQ_LEVEL4;
      IVAR5 = EXCEP_IRQ_LEVEL5;
      IVAR6 = EXCEP_IRQ_LEVEL6;

      mn10300_dcache_flush_inv();
      mn10300_icache_inv();

      /* disable all interrupts and set to priority 6 (lowest) */
      for (loop = 0; loop < NR_IRQS; loop++)
            GxICR(loop) = GxICR_LEVEL_6 | GxICR_DETECT;

      /* clear the timers */
      TM0MD = 0;
      TM1MD = 0;
      TM2MD = 0;
      TM3MD = 0;
      TM4MD = 0;
      TM5MD = 0;
      TM6MD = 0;
      TM6MDA      = 0;
      TM6MDB      = 0;
      TM7MD = 0;
      TM8MD = 0;
      TM9MD = 0;
      TM10MD      = 0;
      TM11MD      = 0;

      calibrate_clock();
}

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