arch/mn10300/unit-asb2305/unit-init.c

   1 /* ASB2305 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 <linux/param.h>
  13 #include <linux/init.h>
  14 #include <linux/pci.h>
  15 #include <asm/io.h>
  16 #include <asm/irq.h>
  17 #include <asm/setup.h>
  18 #include <asm/processor.h>
  19 #include <asm/intctl-regs.h>
  20 #include <asm/serial-regs.h>
  21 #include <unit/serial.h>
  22
  23 /*
  24  * initialise some of the unit hardware before gdbstub is set up
  25  */
  26 asmlinkage void __init unit_init(void)
  27 {
  28 #ifndef CONFIG_GDBSTUB_ON_TTYSx
  29         /* set the 16550 interrupt line to level 3 if not being used for GDB */
  30 #ifdef CONFIG_EXT_SERIAL_IRQ_LEVEL
  31         set_intr_level(XIRQ0, NUM2GxICR_LEVEL(CONFIG_EXT_SERIAL_IRQ_LEVEL));
  32 #endif
  33 #endif /* CONFIG_GDBSTUB_ON_TTYSx */
  34 }
  35
  36 /*
  37  * initialise the rest of the unit hardware after gdbstub is ready
  38  */
  39 void __init unit_setup(void)
  40 {
  41 #ifdef CONFIG_PCI
  42         unit_pci_init();
  43 #endif
  44 }
  45
  46 /*
  47  * initialise the external interrupts used by a unit of this type
  48  */
  49 void __init unit_init_IRQ(void)
  50 {
  51         unsigned int extnum;
  52
  53         for (extnum = 0; extnum < NR_XIRQS; extnum++) {
  54                 switch (GET_XIRQ_TRIGGER(extnum)) {
  55                 case XIRQ_TRIGGER_HILEVEL:
  56                 case XIRQ_TRIGGER_LOWLEVEL:
  57                         mn10300_set_lateack_irq_type(XIRQ2IRQ(extnum));
  58                         break;
  59                 default:
  60                         break;
  61                 }
  62         }
  63 }