arch/powerpc/platforms/83xx/mpc834x_itx.c

   1 /*
   2  * arch/powerpc/platforms/83xx/mpc834x_itx.c
   3  *
   4  * MPC834x ITX board specific routines
   5  *
   6  * Maintainer: Kumar Gala <galak@kernel.crashing.org>
   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/stddef.h>
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/errno.h>
  18 #include <linux/reboot.h>
  19 #include <linux/pci.h>
  20 #include <linux/kdev_t.h>
  21 #include <linux/major.h>
  22 #include <linux/console.h>
  23 #include <linux/delay.h>
  24 #include <linux/seq_file.h>
  25 #include <linux/root_dev.h>
  26 #include <linux/of_platform.h>
  27
  28 #include <asm/system.h>
  29 #include <asm/atomic.h>
  30 #include <asm/time.h>
  31 #include <asm/io.h>
  32 #include <asm/machdep.h>
  33 #include <asm/ipic.h>
  34 #include <asm/irq.h>
  35 #include <asm/prom.h>
  36 #include <asm/udbg.h>
  37 #include <sysdev/fsl_soc.h>
  38
  39 #include "mpc83xx.h"
  40
  41 static struct of_device_id __initdata mpc834x_itx_ids[] = {
  42         { .compatible = "fsl,pq2pro-localbus", },
  43         {},
  44 };
  45
  46 static int __init mpc834x_itx_declare_of_platform_devices(void)
  47 {
  48         return of_platform_bus_probe(NULL, mpc834x_itx_ids, NULL);
  49 }
  50 machine_device_initcall(mpc834x_itx, mpc834x_itx_declare_of_platform_devices);
  51
  52 /* ************************************************************************
  53  *
  54  * Setup the architecture
  55  *
  56  */
  57 static void __init mpc834x_itx_setup_arch(void)
  58 {
  59 #ifdef CONFIG_PCI
  60         struct device_node *np;
  61 #endif
  62
  63         if (ppc_md.progress)
  64                 ppc_md.progress("mpc834x_itx_setup_arch()", 0);
  65
  66 #ifdef CONFIG_PCI
  67         for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
  68                 mpc83xx_add_bridge(np);
  69 #endif
  70
  71         mpc834x_usb_cfg();
  72 }
  73
  74 static void __init mpc834x_itx_init_IRQ(void)
  75 {
  76         struct device_node *np;
  77
  78         np = of_find_node_by_type(NULL, "ipic");
  79         if (!np)
  80                 return;
  81
  82         ipic_init(np, 0);
  83
  84         /* Initialize the default interrupt mapping priorities,
  85          * in case the boot rom changed something on us.
  86          */
  87         ipic_set_default_priority();
  88 }
  89
  90 /*
  91  * Called very early, MMU is off, device-tree isn't unflattened
  92  */
  93 static int __init mpc834x_itx_probe(void)
  94 {
  95         unsigned long root = of_get_flat_dt_root();
  96
  97         return of_flat_dt_is_compatible(root, "MPC834xMITX");
  98 }
  99
 100 define_machine(mpc834x_itx) {
 101         .name                   = "MPC834x ITX",
 102         .probe                  = mpc834x_itx_probe,
 103         .setup_arch             = mpc834x_itx_setup_arch,
 104         .init_IRQ               = mpc834x_itx_init_IRQ,
 105         .get_irq                = ipic_get_irq,
 106         .restart                = mpc83xx_restart,
 107         .time_init              = mpc83xx_time_init,
 108         .calibrate_decr         = generic_calibrate_decr,
 109         .progress               = udbg_progress,
 110 };