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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 #include <sysdev/fsl_pci.h>
  21
  22 #include "mpc83xx.h"
  23
  24 /* ************************************************************************
  25  *
  26  * Setup the architecture
  27  *
  28  */
  29 static void __init mpc837x_rdb_setup_arch(void)
  30 {
  31 #ifdef CONFIG_PCI
  32         struct device_node *np;
  33 #endif
  34
  35         if (ppc_md.progress)
  36                 ppc_md.progress("mpc837x_rdb_setup_arch()", 0);
  37
  38 #ifdef CONFIG_PCI
  39         for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
  40                 mpc83xx_add_bridge(np);
  41 #endif
  42         mpc837x_usb_cfg();
  43 }
  44
  45 static struct of_device_id mpc837x_ids[] = {
  46         { .type = "soc", },
  47         { .compatible = "soc", },
  48         { .compatible = "simple-bus", },
  49         {},
  50 };
  51
  52 static int __init mpc837x_declare_of_platform_devices(void)
  53 {
  54         /* Publish of_device */
  55         of_platform_bus_probe(NULL, mpc837x_ids, NULL);
  56
  57         return 0;
  58 }
  59 machine_device_initcall(mpc837x_rdb, mpc837x_declare_of_platform_devices);
  60
  61 static void __init mpc837x_rdb_init_IRQ(void)
  62 {
  63         struct device_node *np;
  64
  65         np = of_find_compatible_node(NULL, NULL, "fsl,ipic");
  66         if (!np)
  67                 return;
  68
  69         ipic_init(np, 0);
  70
  71         /* Initialize the default interrupt mapping priorities,
  72          * in case the boot rom changed something on us.
  73          */
  74         ipic_set_default_priority();
  75 }
  76
  77 /*
  78  * Called very early, MMU is off, device-tree isn't unflattened
  79  */
  80 static int __init mpc837x_rdb_probe(void)
  81 {
  82         unsigned long root = of_get_flat_dt_root();
  83
  84         return of_flat_dt_is_compatible(root, "fsl,mpc8377rdb") ||
  85                of_flat_dt_is_compatible(root, "fsl,mpc8378rdb") ||
  86                of_flat_dt_is_compatible(root, "fsl,mpc8379rdb");
  87 }
  88
  89 define_machine(mpc837x_rdb) {
  90         .name                   = "MPC837x RDB",
  91         .probe                  = mpc837x_rdb_probe,
  92         .setup_arch             = mpc837x_rdb_setup_arch,
  93         .init_IRQ               = mpc837x_rdb_init_IRQ,
  94         .get_irq                = ipic_get_irq,
  95         .restart                = mpc83xx_restart,
  96         .time_init              = mpc83xx_time_init,
  97         .calibrate_decr         = generic_calibrate_decr,
  98         .progress               = udbg_progress,
  99 };