release/src-rt-6.x.4708/linux/linux-2.6.36/arch/powerpc/platforms/83xx/mpc836x_rdk.c

   1 /*
   2  * MPC8360E-RDK board file.
   3  *
   4  * Copyright (c) 2006  Freescale Semicondutor, Inc.
   5  * Copyright (c) 2007-2008  MontaVista Software, Inc.
   6  *
   7  * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under  the terms of  the GNU General  Public License as published by the
  11  * Free Software Foundation;  either version 2 of the  License, or (at your
  12  * option) any later version.
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/pci.h>
  17 #include <linux/of_platform.h>
  18 #include <linux/io.h>
  19 #include <asm/prom.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 #include <sysdev/fsl_soc.h>
  26 #include <sysdev/fsl_pci.h>
  27
  28 #include "mpc83xx.h"
  29
  30 static struct of_device_id __initdata mpc836x_rdk_ids[] = {
  31         { .compatible = "simple-bus", },
  32         {},
  33 };
  34
  35 static int __init mpc836x_rdk_declare_of_platform_devices(void)
  36 {
  37         return of_platform_bus_probe(NULL, mpc836x_rdk_ids, NULL);
  38 }
  39 machine_device_initcall(mpc836x_rdk, mpc836x_rdk_declare_of_platform_devices);
  40
  41 static void __init mpc836x_rdk_setup_arch(void)
  42 {
  43 #ifdef CONFIG_PCI
  44         struct device_node *np;
  45 #endif
  46
  47         if (ppc_md.progress)
  48                 ppc_md.progress("mpc836x_rdk_setup_arch()", 0);
  49
  50 #ifdef CONFIG_PCI
  51         for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
  52                 mpc83xx_add_bridge(np);
  53 #endif
  54 #ifdef CONFIG_QUICC_ENGINE
  55         qe_reset();
  56 #endif
  57 }
  58
  59 static void __init mpc836x_rdk_init_IRQ(void)
  60 {
  61         struct device_node *np;
  62
  63         np = of_find_compatible_node(NULL, NULL, "fsl,ipic");
  64         if (!np)
  65                 return;
  66
  67         ipic_init(np, 0);
  68
  69         /*
  70          * Initialize the default interrupt mapping priorities,
  71          * in case the boot rom changed something on us.
  72          */
  73         ipic_set_default_priority();
  74         of_node_put(np);
  75 #ifdef CONFIG_QUICC_ENGINE
  76         np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
  77         if (!np)
  78                 return;
  79
  80         qe_ic_init(np, 0, qe_ic_cascade_low_ipic, qe_ic_cascade_high_ipic);
  81         of_node_put(np);
  82 #endif
  83 }
  84
  85 /*
  86  * Called very early, MMU is off, device-tree isn't unflattened.
  87  */
  88 static int __init mpc836x_rdk_probe(void)
  89 {
  90         unsigned long root = of_get_flat_dt_root();
  91
  92         return of_flat_dt_is_compatible(root, "fsl,mpc8360rdk");
  93 }
  94
  95 define_machine(mpc836x_rdk) {
  96         .name           = "MPC836x RDK",
  97         .probe          = mpc836x_rdk_probe,
  98         .setup_arch     = mpc836x_rdk_setup_arch,
  99         .init_IRQ       = mpc836x_rdk_init_IRQ,
 100         .get_irq        = ipic_get_irq,
 101         .restart        = mpc83xx_restart,
 102         .time_init      = mpc83xx_time_init,
 103         .calibrate_decr = generic_calibrate_decr,
 104         .progress       = udbg_progress,
 105 };