err.no Git - linux-2.6/blob - arch/powerpc/platforms/83xx/mpc832x_rdb.c

   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 #endif
  53
  54 #ifdef CONFIG_QUICC_ENGINE
  55         qe_reset();
  56
  57         if ((np = of_find_node_by_name(np, "par_io")) != NULL) {
  58                 par_io_init(np);
  59                 of_node_put(np);
  60
  61                 for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
  62                         par_io_of_config(np);
  63         }
  64 #endif                          /* CONFIG_QUICC_ENGINE */
  65 }
  66
  67 static struct of_device_id mpc832x_ids[] = {
  68         { .type = "soc", },
  69         { .compatible = "soc", },
  70         { .type = "qe", },
  71         {},
  72 };
  73
  74 static int __init mpc832x_declare_of_platform_devices(void)
  75 {
  76         if (!machine_is(mpc832x_rdb))
  77                 return 0;
  78
  79         /* Publish the QE devices */
  80         of_platform_bus_probe(NULL, mpc832x_ids, NULL);
  81
  82         return 0;
  83 }
  84 device_initcall(mpc832x_declare_of_platform_devices);
  85
  86 void __init mpc832x_rdb_init_IRQ(void)
  87 {
  88
  89         struct device_node *np;
  90
  91         np = of_find_node_by_type(NULL, "ipic");
  92         if (!np)
  93                 return;
  94
  95         ipic_init(np, 0);
  96
  97         /* Initialize the default interrupt mapping priorities,
  98          * in case the boot rom changed something on us.
  99          */
 100         ipic_set_default_priority();
 101         of_node_put(np);
 102
 103 #ifdef CONFIG_QUICC_ENGINE
 104         np = of_find_node_by_type(NULL, "qeic");
 105         if (!np)
 106                 return;
 107
 108         qe_ic_init(np, 0);
 109         of_node_put(np);
 110 #endif                          /* CONFIG_QUICC_ENGINE */
 111 }
 112
 113 /*
 114  * Called very early, MMU is off, device-tree isn't unflattened
 115  */
 116 static int __init mpc832x_rdb_probe(void)
 117 {
 118         unsigned long root = of_get_flat_dt_root();
 119
 120         return of_flat_dt_is_compatible(root, "MPC832xRDB");
 121 }
 122
 123 define_machine(mpc832x_rdb) {
 124         .name           = "MPC832x RDB",
 125         .probe          = mpc832x_rdb_probe,
 126         .setup_arch     = mpc832x_rdb_setup_arch,
 127         .init_IRQ       = mpc832x_rdb_init_IRQ,
 128         .get_irq        = ipic_get_irq,
 129         .restart        = mpc83xx_restart,
 130         .time_init      = mpc83xx_time_init,
 131         .calibrate_decr = generic_calibrate_decr,
 132         .progress       = udbg_progress,
 133 };