arch/powerpc/platforms/85xx/p2041_rdb.c

   1 /*
   2  * P2041 RDB Setup
   3  *
   4  * Copyright 2011 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 #include <linux/kdev_t.h>
  15 #include <linux/delay.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/phy.h>
  18
  19 #include <asm/time.h>
  20 #include <asm/machdep.h>
  21 #include <asm/pci-bridge.h>
  22 #include <mm/mmu_decl.h>
  23 #include <asm/prom.h>
  24 #include <asm/udbg.h>
  25 #include <asm/mpic.h>
  26
  27 #include <linux/of_platform.h>
  28 #include <sysdev/fsl_soc.h>
  29 #include <sysdev/fsl_pci.h>
  30 #include <asm/ehv_pic.h>
  31
  32 #include "corenet_ds.h"
  33
  34 /*
  35  * Called very early, device-tree isn't unflattened
  36  */
  37 static int __init p2041_rdb_probe(void)
  38 {
  39         unsigned long root = of_get_flat_dt_root();
  40 #ifdef CONFIG_SMP
  41         extern struct smp_ops_t smp_85xx_ops;
  42 #endif
  43
  44         if (of_flat_dt_is_compatible(root, "fsl,P2041RDB"))
  45                 return 1;
  46
  47         /* Check if we're running under the Freescale hypervisor */
  48         if (of_flat_dt_is_compatible(root, "fsl,P2041RDB-hv")) {
  49                 ppc_md.init_IRQ = ehv_pic_init;
  50                 ppc_md.get_irq = ehv_pic_get_irq;
  51                 ppc_md.restart = fsl_hv_restart;
  52                 ppc_md.power_off = fsl_hv_halt;
  53                 ppc_md.halt = fsl_hv_halt;
  54 #ifdef CONFIG_SMP
  55                 /*
  56                  * Disable the timebase sync operations because we can't write
  57                  * to the timebase registers under the hypervisor.
  58                   */
  59                 smp_85xx_ops.give_timebase = NULL;
  60                 smp_85xx_ops.take_timebase = NULL;
  61 #endif
  62                 return 1;
  63         }
  64
  65         return 0;
  66 }
  67
  68 define_machine(p2041_rdb) {
  69         .name                   = "P2041 RDB",
  70         .probe                  = p2041_rdb_probe,
  71         .setup_arch             = corenet_ds_setup_arch,
  72         .init_IRQ               = corenet_ds_pic_init,
  73 #ifdef CONFIG_PCI
  74         .pcibios_fixup_bus      = fsl_pcibios_fixup_bus,
  75 #endif
  76         .get_irq                = mpic_get_coreint_irq,
  77         .restart                = fsl_rstcr_restart,
  78         .calibrate_decr         = generic_calibrate_decr,
  79         .progress               = udbg_progress,
  80         .power_save             = e500_idle,
  81 };
  82
  83 machine_arch_initcall(p2041_rdb, corenet_ds_publish_devices);
  84
  85 #ifdef CONFIG_SWIOTLB
  86 machine_arch_initcall(p2041_rdb, swiotlb_setup_bus_notifier);
  87 #endif