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