arch/powerpc/platforms/83xx/mpc831x_rdb.c

   1 /*
   2  * arch/powerpc/platforms/83xx/mpc831x_rdb.c
   3  *
   4  * Description: MPC831x RDB board specific routines.
   5  * This file is based on mpc834x_sys.c
   6  * Author: Lo Wlison <r43300@freescale.com>
   7  *
   8  * Copyright (C) Freescale Semiconductor, Inc. 2006. All rights reserved.
   9  *
  10  * This program is free software; you can redistribute  it and/or modify it
  11  * under  the terms of  the GNU General  Public License as published by the
  12  * Free Software Foundation;  either version 2 of the  License, or (at your
  13  * option) any later version.
  14  */
  15
  16 #include <linux/pci.h>
  17 #include <linux/of_platform.h>
  18
  19 #include <asm/time.h>
  20 #include <asm/ipic.h>
  21 #include <asm/udbg.h>
  22
  23 #include "mpc83xx.h"
  24
  25 /*
  26  * Setup the architecture
  27  */
  28 static void __init mpc831x_rdb_setup_arch(void)
  29 {
  30 #ifdef CONFIG_PCI
  31         struct device_node *np;
  32 #endif
  33
  34         if (ppc_md.progress)
  35                 ppc_md.progress("mpc831x_rdb_setup_arch()", 0);
  36
  37 #ifdef CONFIG_PCI
  38         for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
  39                 mpc83xx_add_bridge(np);
  40 #endif
  41         mpc831x_usb_cfg();
  42 }
  43
  44 void __init mpc831x_rdb_init_IRQ(void)
  45 {
  46         struct device_node *np;
  47
  48         np = of_find_node_by_type(NULL, "ipic");
  49         if (!np)
  50                 return;
  51
  52         ipic_init(np, 0);
  53
  54         /* Initialize the default interrupt mapping priorities,
  55          * in case the boot rom changed something on us.
  56          */
  57         ipic_set_default_priority();
  58 }
  59
  60 /*
  61  * Called very early, MMU is off, device-tree isn't unflattened
  62  */
  63 static int __init mpc831x_rdb_probe(void)
  64 {
  65         unsigned long root = of_get_flat_dt_root();
  66
  67         return of_flat_dt_is_compatible(root, "MPC8313ERDB") ||
  68                of_flat_dt_is_compatible(root, "fsl,mpc8315erdb");
  69 }
  70
  71 static struct of_device_id __initdata of_bus_ids[] = {
  72         { .compatible = "simple-bus" },
  73         {},
  74 };
  75
  76 static int __init declare_of_platform_devices(void)
  77 {
  78         of_platform_bus_probe(NULL, of_bus_ids, NULL);
  79         return 0;
  80 }
  81 machine_device_initcall(mpc831x_rdb, declare_of_platform_devices);
  82
  83 define_machine(mpc831x_rdb) {
  84         .name                   = "MPC831x RDB",
  85         .probe                  = mpc831x_rdb_probe,
  86         .setup_arch             = mpc831x_rdb_setup_arch,
  87         .init_IRQ               = mpc831x_rdb_init_IRQ,
  88         .get_irq                = ipic_get_irq,
  89         .restart                = mpc83xx_restart,
  90         .time_init              = mpc83xx_time_init,
  91         .calibrate_decr         = generic_calibrate_decr,
  92         .progress               = udbg_progress,
  93 };