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 #include <sysdev/fsl_pci.h>
  39
  40 #include "mpc83xx.h"
  41
  42 static struct of_device_id __initdata mpc834x_itx_ids[] = {
  43         { .compatible = "fsl,pq2pro-localbus", },
  44         { .compatible = "simple-bus", },
  45         {},
  46 };
  47
  48 static int __init mpc834x_itx_declare_of_platform_devices(void)
  49 {
  50         return of_platform_bus_probe(NULL, mpc834x_itx_ids, NULL);
  51 }
  52 machine_device_initcall(mpc834x_itx, mpc834x_itx_declare_of_platform_devices);
  53
  54 /* ************************************************************************
  55  *
  56  * Setup the architecture
  57  *
  58  */
  59 static void __init mpc834x_itx_setup_arch(void)
  60 {
  61 #ifdef CONFIG_PCI
  62         struct device_node *np;
  63 #endif
  64
  65         if (ppc_md.progress)
  66                 ppc_md.progress("mpc834x_itx_setup_arch()", 0);
  67
  68 #ifdef CONFIG_PCI
  69         for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
  70                 mpc83xx_add_bridge(np);
  71 #endif
  72
  73         mpc834x_usb_cfg();
  74 }
  75
  76 static void __init mpc834x_itx_init_IRQ(void)
  77 {
  78         struct device_node *np;
  79
  80         np = of_find_node_by_type(NULL, "ipic");
  81         if (!np)
  82                 return;
  83
  84         ipic_init(np, 0);
  85
  86         /* Initialize the default interrupt mapping priorities,
  87          * in case the boot rom changed something on us.
  88          */
  89         ipic_set_default_priority();
  90 }
  91
  92 /*
  93  * Called very early, MMU is off, device-tree isn't unflattened
  94  */
  95 static int __init mpc834x_itx_probe(void)
  96 {
  97         unsigned long root = of_get_flat_dt_root();
  98
  99         return of_flat_dt_is_compatible(root, "MPC834xMITX");
 100 }
 101
 102 define_machine(mpc834x_itx) {
 103         .name                   = "MPC834x ITX",
 104         .probe                  = mpc834x_itx_probe,
 105         .setup_arch             = mpc834x_itx_setup_arch,
 106         .init_IRQ               = mpc834x_itx_init_IRQ,
 107         .get_irq                = ipic_get_irq,
 108         .restart                = mpc83xx_restart,
 109         .time_init              = mpc83xx_time_init,
 110         .calibrate_decr         = generic_calibrate_decr,
 111         .progress               = udbg_progress,
 112 };