arch/powerpc/platforms/83xx/mpc8313_rdb.c

   1 /*
   2  * arch/powerpc/platforms/83xx/mpc8313_rdb.c
   3  *
   4  * Description: MPC8313x RDB board specific routines.
   5  * This file is based on mpc834x_sys.c
   6  * Author: Lo Wlison <r43300@freescale.com>
   7  *
   8  * Copyright (C) Freescale Semiconductor, Inc. 2006. All rights reserved.
   9  *
  10  * This program is free software; you can redistribute  it and/or modify it
  11  * under  the terms of  the GNU General  Public License as published by the
  12  * Free Software Foundation;  either version 2 of the  License, or (at your
  13  * option) any later version.
  14  */
  15
  16 #include <linux/pci.h>
  17
  18 #include <asm/time.h>
  19 #include <asm/ipic.h>
  20 #include <asm/udbg.h>
  21
  22 #include "mpc83xx.h"
  23
  24 #undef DEBUG
  25 #ifdef DEBUG
  26 #define DBG(fmt...) udbg_printf(fmt)
  27 #else
  28 #define DBG(fmt...)
  29 #endif
  30
  31 /* ************************************************************************
  32  *
  33  * Setup the architecture
  34  *
  35  */
  36 static void __init mpc8313_rdb_setup_arch(void)
  37 {
  38 #ifdef CONFIG_PCI
  39         struct device_node *np;
  40 #endif
  41
  42         if (ppc_md.progress)
  43                 ppc_md.progress("mpc8313_rdb_setup_arch()", 0);
  44
  45 #ifdef CONFIG_PCI
  46         for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
  47                 mpc83xx_add_bridge(np);
  48
  49         ppc_md.pci_exclude_device = mpc83xx_exclude_device;
  50 #endif
  51         mpc831x_usb_cfg();
  52 }
  53
  54 void __init mpc8313_rdb_init_IRQ(void)
  55 {
  56         struct device_node *np;
  57
  58         np = of_find_node_by_type(NULL, "ipic");
  59         if (!np)
  60                 return;
  61
  62         ipic_init(np, 0);
  63
  64         /* Initialize the default interrupt mapping priorities,
  65          * in case the boot rom changed something on us.
  66          */
  67         ipic_set_default_priority();
  68 }
  69
  70 /*
  71  * Called very early, MMU is off, device-tree isn't unflattened
  72  */
  73 static int __init mpc8313_rdb_probe(void)
  74 {
  75         unsigned long root = of_get_flat_dt_root();
  76
  77         return of_flat_dt_is_compatible(root, "MPC8313ERDB");
  78 }
  79
  80 define_machine(mpc8313_rdb) {
  81         .name                   = "MPC8313 RDB",
  82         .probe                  = mpc8313_rdb_probe,
  83         .setup_arch             = mpc8313_rdb_setup_arch,
  84         .init_IRQ               = mpc8313_rdb_init_IRQ,
  85         .get_irq                = ipic_get_irq,
  86         .restart                = mpc83xx_restart,
  87         .time_init              = mpc83xx_time_init,
  88         .calibrate_decr         = generic_calibrate_decr,
  89         .progress               = udbg_progress,
  90 };