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 #ifndef CONFIG_PCI
  32 unsigned long isa_io_base = 0;
  33 unsigned long isa_mem_base = 0;
  34 #endif
  35
  36 /* ************************************************************************
  37  *
  38  * Setup the architecture
  39  *
  40  */
  41 static void __init mpc8313_rdb_setup_arch(void)
  42 {
  43         struct device_node *np;
  44
  45         if (ppc_md.progress)
  46                 ppc_md.progress("mpc8313_rdb_setup_arch()", 0);
  47
  48 #ifdef CONFIG_PCI
  49         for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
  50                 add_bridge(np);
  51
  52         ppc_md.pci_exclude_device = mpc83xx_exclude_device;
  53 #endif
  54 }
  55
  56 void __init mpc8313_rdb_init_IRQ(void)
  57 {
  58         struct device_node *np;
  59
  60         np = of_find_node_by_type(NULL, "ipic");
  61         if (!np)
  62                 return;
  63
  64         ipic_init(np, 0);
  65
  66         /* Initialize the default interrupt mapping priorities,
  67          * in case the boot rom changed something on us.
  68          */
  69         ipic_set_default_priority();
  70 }
  71
  72 /*
  73  * Called very early, MMU is off, device-tree isn't unflattened
  74  */
  75 static int __init mpc8313_rdb_probe(void)
  76 {
  77         char *model = of_get_flat_dt_prop(of_get_flat_dt_root(),
  78                                           "model", NULL);
  79         if (model == NULL)
  80                 return 0;
  81         if (strcmp(model, "MPC8313ERDB"))
  82                 return 0;
  83
  84         DBG("MPC8313 RDB found\n");
  85
  86         return 1;
  87 }
  88
  89 define_machine(mpc8313_rdb) {
  90         .name                   = "MPC8313 RDB",
  91         .probe                  = mpc8313_rdb_probe,
  92         .setup_arch             = mpc8313_rdb_setup_arch,
  93         .init_IRQ               = mpc8313_rdb_init_IRQ,
  94         .get_irq                = ipic_get_irq,
  95         .restart                = mpc83xx_restart,
  96         .time_init              = mpc83xx_time_init,
  97         .calibrate_decr         = generic_calibrate_decr,
  98         .progress               = udbg_progress,
  99 };