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   1 /* MN103E010 Processor initialisation
   2  *
   3  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public Licence
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the Licence, or (at your option) any later version.
  10  */
  11 #include <linux/kernel.h>
  12 #include <asm/rtc.h>
  13
  14 /*
  15  * initialise the on-silicon processor peripherals
  16  */
  17 asmlinkage void __init processor_init(void)
  18 {
  19         int loop;
  20
  21         /* set up the exception table first */
  22         for (loop = 0x000; loop < 0x400; loop += 8)
  23                 __set_intr_stub(loop, __common_exception);
  24
  25         __set_intr_stub(EXCEP_ITLBMISS,         itlb_miss);
  26         __set_intr_stub(EXCEP_DTLBMISS,         dtlb_miss);
  27         __set_intr_stub(EXCEP_IAERROR,          itlb_aerror);
  28         __set_intr_stub(EXCEP_DAERROR,          dtlb_aerror);
  29         __set_intr_stub(EXCEP_BUSERROR,         raw_bus_error);
  30         __set_intr_stub(EXCEP_DOUBLE_FAULT,     double_fault);
  31         __set_intr_stub(EXCEP_SYSCALL0,         system_call);
  32
  33         __set_intr_stub(EXCEP_NMI,              nmi_handler);
  34         __set_intr_stub(EXCEP_WDT,              nmi_handler);
  35         __set_intr_stub(EXCEP_IRQ_LEVEL0,       irq_handler);
  36         __set_intr_stub(EXCEP_IRQ_LEVEL1,       irq_handler);
  37         __set_intr_stub(EXCEP_IRQ_LEVEL2,       irq_handler);
  38         __set_intr_stub(EXCEP_IRQ_LEVEL3,       irq_handler);
  39         __set_intr_stub(EXCEP_IRQ_LEVEL4,       irq_handler);
  40         __set_intr_stub(EXCEP_IRQ_LEVEL5,       irq_handler);
  41         __set_intr_stub(EXCEP_IRQ_LEVEL6,       irq_handler);
  42
  43         IVAR0 = EXCEP_IRQ_LEVEL0;
  44         IVAR1 = EXCEP_IRQ_LEVEL1;
  45         IVAR2 = EXCEP_IRQ_LEVEL2;
  46         IVAR3 = EXCEP_IRQ_LEVEL3;
  47         IVAR4 = EXCEP_IRQ_LEVEL4;
  48         IVAR5 = EXCEP_IRQ_LEVEL5;
  49         IVAR6 = EXCEP_IRQ_LEVEL6;
  50
  51         mn10300_dcache_flush_inv();
  52         mn10300_icache_inv();
  53
  54         /* disable all interrupts and set to priority 6 (lowest) */
  55         for (loop = 0; loop < NR_IRQS; loop++)
  56                 GxICR(loop) = GxICR_LEVEL_6 | GxICR_DETECT;
  57
  58         /* clear the timers */
  59         TM0MD   = 0;
  60         TM1MD   = 0;
  61         TM2MD   = 0;
  62         TM3MD   = 0;
  63         TM4MD   = 0;
  64         TM5MD   = 0;
  65         TM6MD   = 0;
  66         TM6MDA  = 0;
  67         TM6MDB  = 0;
  68         TM7MD   = 0;
  69         TM8MD   = 0;
  70         TM9MD   = 0;
  71         TM10MD  = 0;
  72         TM11MD  = 0;
  73
  74         calibrate_clock();
  75 }