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   1 /*
   2  * arch/powerpc/platforms/83xx/mpc837x_mds.c
   3  *
   4  * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
   5  *
   6  * MPC837x MDS 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.h>
  16 #include <linux/of_platform.h>
  17
  18 #include <asm/time.h>
  19 #include <asm/ipic.h>
  20 #include <asm/udbg.h>
  21 #include <asm/prom.h>
  22
  23 #include "mpc83xx.h"
  24
  25 /* ************************************************************************
  26  *
  27  * Setup the architecture
  28  *
  29  */
  30 static void __init mpc837x_mds_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_mds_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 }
  44
  45 static struct of_device_id mpc837x_ids[] = {
  46         { .type = "soc", },
  47         { .compatible = "soc", },
  48         {},
  49 };
  50
  51 static int __init mpc837x_declare_of_platform_devices(void)
  52 {
  53         if (!machine_is(mpc837x_mds))
  54                 return 0;
  55
  56         /* Publish of_device */
  57         of_platform_bus_probe(NULL, mpc837x_ids, NULL);
  58
  59         return 0;
  60 }
  61 device_initcall(mpc837x_declare_of_platform_devices);
  62
  63 static void __init mpc837x_mds_init_IRQ(void)
  64 {
  65         struct device_node *np;
  66
  67         np = of_find_compatible_node(NULL, NULL, "fsl,ipic");
  68         if (!np)
  69                 return;
  70
  71         ipic_init(np, 0);
  72
  73         /* Initialize the default interrupt mapping priorities,
  74          * in case the boot rom changed something on us.
  75          */
  76         ipic_set_default_priority();
  77 }
  78
  79 /*
  80  * Called very early, MMU is off, device-tree isn't unflattened
  81  */
  82 static int __init mpc837x_mds_probe(void)
  83 {
  84         unsigned long root = of_get_flat_dt_root();
  85
  86         return of_flat_dt_is_compatible(root, "fsl,mpc837xmds");
  87 }
  88
  89 define_machine(mpc837x_mds) {
  90         .name                   = "MPC837x MDS",
  91         .probe                  = mpc837x_mds_probe,
  92         .setup_arch             = mpc837x_mds_setup_arch,
  93         .init_IRQ               = mpc837x_mds_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 };