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   1 /*
   2  * arch/powerpc/platforms/83xx/mpc832x_rdb.c
   3  *
   4  * Copyright (C) Freescale Semiconductor, Inc. 2007. All rights reserved.
   5  *
   6  * Description:
   7  * MPC832x RDB board specific routines.
   8  * This file is based on mpc832x_mds.c and mpc8313_rdb.c
   9  * Author: Michael Barkowski <michael.barkowski@freescale.com>
  10  *
  11  * This program is free software; you can redistribute  it and/or modify it
  12  * under  the terms of  the GNU General  Public License as published by the
  13  * Free Software Foundation;  either version 2 of the  License, or (at your
  14  * option) any later version.
  15  */
  16
  17 #include <linux/pci.h>
  18
  19 #include <asm/of_platform.h>
  20 #include <asm/time.h>
  21 #include <asm/ipic.h>
  22 #include <asm/udbg.h>
  23 #include <asm/qe.h>
  24 #include <asm/qe_ic.h>
  25
  26 #include "mpc83xx.h"
  27
  28 #undef DEBUG
  29 #ifdef DEBUG
  30 #define DBG(fmt...) udbg_printf(fmt)
  31 #else
  32 #define DBG(fmt...)
  33 #endif
  34
  35 /* ************************************************************************
  36  *
  37  * Setup the architecture
  38  *
  39  */
  40 static void __init mpc832x_rdb_setup_arch(void)
  41 {
  42 #if defined(CONFIG_PCI) || defined(CONFIG_QUICC_ENGINE)
  43         struct device_node *np;
  44 #endif
  45
  46         if (ppc_md.progress)
  47                 ppc_md.progress("mpc832x_rdb_setup_arch()", 0);
  48
  49 #ifdef CONFIG_PCI
  50         for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
  51                 mpc83xx_add_bridge(np);
  52
  53         ppc_md.pci_exclude_device = mpc83xx_exclude_device;
  54 #endif
  55
  56 #ifdef CONFIG_QUICC_ENGINE
  57         qe_reset();
  58
  59         if ((np = of_find_node_by_name(np, "par_io")) != NULL) {
  60                 par_io_init(np);
  61                 of_node_put(np);
  62
  63                 for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
  64                         par_io_of_config(np);
  65         }
  66 #endif                          /* CONFIG_QUICC_ENGINE */
  67 }
  68
  69 static struct of_device_id mpc832x_ids[] = {
  70         { .type = "soc", },
  71         { .compatible = "soc", },
  72         { .type = "qe", },
  73         { .type = "mdio", },
  74         {},
  75 };
  76
  77 static int __init mpc832x_declare_of_platform_devices(void)
  78 {
  79         if (!machine_is(mpc832x_rdb))
  80                 return 0;
  81
  82         /* Publish the QE devices */
  83         of_platform_bus_probe(NULL, mpc832x_ids, NULL);
  84
  85         return 0;
  86 }
  87 device_initcall(mpc832x_declare_of_platform_devices);
  88
  89 void __init mpc832x_rdb_init_IRQ(void)
  90 {
  91
  92         struct device_node *np;
  93
  94         np = of_find_node_by_type(NULL, "ipic");
  95         if (!np)
  96                 return;
  97
  98         ipic_init(np, 0);
  99
 100         /* Initialize the default interrupt mapping priorities,
 101          * in case the boot rom changed something on us.
 102          */
 103         ipic_set_default_priority();
 104         of_node_put(np);
 105
 106 #ifdef CONFIG_QUICC_ENGINE
 107         np = of_find_node_by_type(NULL, "qeic");
 108         if (!np)
 109                 return;
 110
 111         qe_ic_init(np, 0);
 112         of_node_put(np);
 113 #endif                          /* CONFIG_QUICC_ENGINE */
 114 }
 115
 116 /*
 117  * Called very early, MMU is off, device-tree isn't unflattened
 118  */
 119 static int __init mpc832x_rdb_probe(void)
 120 {
 121         unsigned long root = of_get_flat_dt_root();
 122
 123         return of_flat_dt_is_compatible(root, "MPC832xRDB");
 124 }
 125
 126 define_machine(mpc832x_rdb) {
 127         .name           = "MPC832x RDB",
 128         .probe          = mpc832x_rdb_probe,
 129         .setup_arch     = mpc832x_rdb_setup_arch,
 130         .init_IRQ       = mpc832x_rdb_init_IRQ,
 131         .get_irq        = ipic_get_irq,
 132         .restart        = mpc83xx_restart,
 133         .time_init      = mpc83xx_time_init,
 134         .calibrate_decr = generic_calibrate_decr,
 135         .progress       = udbg_progress,
 136 };