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