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   1 /*
   2  * arch/powerpc/platforms/83xx/mpc837x_rdb.c
   3  *
   4  * Copyright (C) 2007 Freescale Semicondutor, Inc. All rights reserved.
   5  *
   6  * MPC837x RDB board specific routines
   7  *
   8  * This program is free software; you can redistribute  it and/or modify it
   9  * under  the terms of  the GNU General  Public License as published by the
  10  * Free Software Foundation;  either version 2 of the  License, or (at your
  11  * option) any later version.
  12  */
  13
  14 #include <linux/pci.h>
  15 #include <linux/of_platform.h>
  16
  17 #include <asm/time.h>
  18 #include <asm/ipic.h>
  19 #include <asm/udbg.h>
  20
  21 #include "mpc83xx.h"
  22
  23 extern int mpc837x_usb_cfg(void);
  24
  25 /* ************************************************************************
  26  *
  27  * Setup the architecture
  28  *
  29  */
  30 static void __init mpc837x_rdb_setup_arch(void)
  31 {
  32 #ifdef CONFIG_PCI
  33         struct device_node *np;
  34 #endif
  35
  36         if (ppc_md.progress)
  37                 ppc_md.progress("mpc837x_rdb_setup_arch()", 0);
  38
  39 #ifdef CONFIG_PCI
  40         for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
  41                 mpc83xx_add_bridge(np);
  42 #endif
  43         mpc837x_usb_cfg();
  44 }
  45
  46 static struct of_device_id mpc837x_ids[] = {
  47         { .type = "soc", },
  48         { .compatible = "soc", },
  49         { .compatible = "simple-bus", },
  50         {},
  51 };
  52
  53 static int __init mpc837x_declare_of_platform_devices(void)
  54 {
  55         /* Publish of_device */
  56         of_platform_bus_probe(NULL, mpc837x_ids, NULL);
  57
  58         return 0;
  59 }
  60 machine_device_initcall(mpc837x_rdb, mpc837x_declare_of_platform_devices);
  61
  62 static void __init mpc837x_rdb_init_IRQ(void)
  63 {
  64         struct device_node *np;
  65
  66         np = of_find_compatible_node(NULL, NULL, "fsl,ipic");
  67         if (!np)
  68                 return;
  69
  70         ipic_init(np, 0);
  71
  72         /* Initialize the default interrupt mapping priorities,
  73          * in case the boot rom changed something on us.
  74          */
  75         ipic_set_default_priority();
  76 }
  77
  78 /*
  79  * Called very early, MMU is off, device-tree isn't unflattened
  80  */
  81 static int __init mpc837x_rdb_probe(void)
  82 {
  83         unsigned long root = of_get_flat_dt_root();
  84
  85         return of_flat_dt_is_compatible(root, "fsl,mpc8377rdb") ||
  86                of_flat_dt_is_compatible(root, "fsl,mpc8378rdb") ||
  87                of_flat_dt_is_compatible(root, "fsl,mpc8379rdb");
  88 }
  89
  90 define_machine(mpc837x_rdb) {
  91         .name                   = "MPC837x RDB",
  92         .probe                  = mpc837x_rdb_probe,
  93         .setup_arch             = mpc837x_rdb_setup_arch,
  94         .init_IRQ               = mpc837x_rdb_init_IRQ,
  95         .get_irq                = ipic_get_irq,
  96         .restart                = mpc83xx_restart,
  97         .time_init              = mpc83xx_time_init,
  98         .calibrate_decr         = generic_calibrate_decr,
  99         .progress               = udbg_progress,
 100 };