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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 #ifndef CONFIG_PCI
  36 unsigned long isa_io_base = 0;
  37 unsigned long isa_mem_base = 0;
  38 #endif
  39
  40 /* ************************************************************************
  41  *
  42  * Setup the architecture
  43  *
  44  */
  45 static void __init mpc832x_rdb_setup_arch(void)
  46 {
  47 #if defined(CONFIG_PCI) || defined(CONFIG_QUICC_ENGINE)
  48         struct device_node *np;
  49 #endif
  50
  51         if (ppc_md.progress)
  52                 ppc_md.progress("mpc832x_rdb_setup_arch()", 0);
  53
  54 #ifdef CONFIG_PCI
  55         for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
  56                 add_bridge(np);
  57
  58         ppc_md.pci_exclude_device = mpc83xx_exclude_device;
  59 #endif
  60
  61 #ifdef CONFIG_QUICC_ENGINE
  62         qe_reset();
  63
  64         if ((np = of_find_node_by_name(np, "par_io")) != NULL) {
  65                 par_io_init(np);
  66                 of_node_put(np);
  67
  68                 for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
  69                         par_io_of_config(np);
  70         }
  71 #endif                          /* CONFIG_QUICC_ENGINE */
  72 }
  73
  74 static struct of_device_id mpc832x_ids[] = {
  75         { .type = "soc", },
  76         { .compatible = "soc", },
  77         { .type = "qe", },
  78         { .type = "mdio", },
  79         {},
  80 };
  81
  82 static int __init mpc832x_declare_of_platform_devices(void)
  83 {
  84         if (!machine_is(mpc832x_rdb))
  85                 return 0;
  86
  87         /* Publish the QE devices */
  88         of_platform_bus_probe(NULL, mpc832x_ids, NULL);
  89
  90         return 0;
  91 }
  92 device_initcall(mpc832x_declare_of_platform_devices);
  93
  94 void __init mpc832x_rdb_init_IRQ(void)
  95 {
  96
  97         struct device_node *np;
  98
  99         np = of_find_node_by_type(NULL, "ipic");
 100         if (!np)
 101                 return;
 102
 103         ipic_init(np, 0);
 104
 105         /* Initialize the default interrupt mapping priorities,
 106          * in case the boot rom changed something on us.
 107          */
 108         ipic_set_default_priority();
 109         of_node_put(np);
 110
 111 #ifdef CONFIG_QUICC_ENGINE
 112         np = of_find_node_by_type(NULL, "qeic");
 113         if (!np)
 114                 return;
 115
 116         qe_ic_init(np, 0);
 117         of_node_put(np);
 118 #endif                          /* CONFIG_QUICC_ENGINE */
 119 }
 120
 121 /*
 122  * Called very early, MMU is off, device-tree isn't unflattened
 123  */
 124 static int __init mpc832x_rdb_probe(void)
 125 {
 126         unsigned long root = of_get_flat_dt_root();
 127
 128         return of_flat_dt_is_compatible(root, "MPC832xRDB");
 129 }
 130
 131 define_machine(mpc832x_rdb) {
 132         .name           = "MPC832x RDB",
 133         .probe          = mpc832x_rdb_probe,
 134         .setup_arch     = mpc832x_rdb_setup_arch,
 135         .init_IRQ       = mpc832x_rdb_init_IRQ,
 136         .get_irq        = ipic_get_irq,
 137         .restart        = mpc83xx_restart,
 138         .time_init      = mpc83xx_time_init,
 139         .calibrate_decr = generic_calibrate_decr,
 140         .progress       = udbg_progress,
 141 };