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 */ 17asmlinkage 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} 76