arch/powerpc/platforms/85xx/p5040_ds.c

   1 /*
   2  * P5040 DS Setup
   3  *
   4  * Copyright 2009-2010 Freescale Semiconductor Inc.
   5  *
   6  * This program is free software; you can redistribute  it and/or modify it
   7  * under  the terms of  the GNU General  Public License as published by the
   8  * Free Software Foundation;  either version 2 of the  License, or (at your
   9  * option) any later version.
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/pci.h>
  14
  15 #include <asm/machdep.h>
  16 #include <asm/udbg.h>
  17 #include <asm/mpic.h>
  18
  19 #include <linux/of_fdt.h>
  20
  21 #include <sysdev/fsl_soc.h>
  22 #include <sysdev/fsl_pci.h>
  23 #include <asm/ehv_pic.h>
  24
  25 #include "corenet_ds.h"
  26
  27 /*
  28  * Called very early, device-tree isn't unflattened
  29  */
  30 static int __init p5040_ds_probe(void)
  31 {
  32         unsigned long root = of_get_flat_dt_root();
  33 #ifdef CONFIG_SMP
  34         extern struct smp_ops_t smp_85xx_ops;
  35 #endif
  36
  37         if (of_flat_dt_is_compatible(root, "fsl,P5040DS"))
  38                 return 1;
  39
  40         /* Check if we're running under the Freescale hypervisor */
  41         if (of_flat_dt_is_compatible(root, "fsl,P5040DS-hv")) {
  42                 ppc_md.init_IRQ = ehv_pic_init;
  43                 ppc_md.get_irq = ehv_pic_get_irq;
  44                 ppc_md.restart = fsl_hv_restart;
  45                 ppc_md.power_off = fsl_hv_halt;
  46                 ppc_md.halt = fsl_hv_halt;
  47 #ifdef CONFIG_SMP
  48                 /*
  49                  * Disable the timebase sync operations because we can't write
  50                  * to the timebase registers under the hypervisor.
  51                   */
  52                 smp_85xx_ops.give_timebase = NULL;
  53                 smp_85xx_ops.take_timebase = NULL;
  54 #endif
  55                 return 1;
  56         }
  57
  58         return 0;
  59 }
  60
  61 define_machine(p5040_ds) {
  62         .name                   = "P5040 DS",
  63         .probe                  = p5040_ds_probe,
  64         .setup_arch             = corenet_ds_setup_arch,
  65         .init_IRQ               = corenet_ds_pic_init,
  66 #ifdef CONFIG_PCI
  67         .pcibios_fixup_bus      = fsl_pcibios_fixup_bus,
  68 #endif
  69         .get_irq                = mpic_get_coreint_irq,
  70         .restart                = fsl_rstcr_restart,
  71         .calibrate_decr         = generic_calibrate_decr,
  72         .progress               = udbg_progress,
  73 #ifdef CONFIG_PPC64
  74         .power_save             = book3e_idle,
  75 #else
  76         .power_save             = e500_idle,
  77 #endif
  78 };
  79
  80 machine_arch_initcall(p5040_ds, corenet_ds_publish_devices);
  81
  82 #ifdef CONFIG_SWIOTLB
  83 machine_arch_initcall(p5040_ds, swiotlb_setup_bus_notifier);
  84 #endif