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mpc8536_ds.c

/*
 * MPC8536 DS Board Setup
 *
 * Copyright 2008 Freescale Semiconductor, Inc.
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/interrupt.h>
#include <linux/of_platform.h>

#include <asm/system.h>
#include <asm/time.h>
#include <asm/machdep.h>
#include <asm/pci-bridge.h>
#include <mm/mmu_decl.h>
#include <asm/prom.h>
#include <asm/udbg.h>
#include <asm/mpic.h>

#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>

void __init mpc8536_ds_pic_init(void)
{
      struct mpic *mpic;
      struct resource r;
      struct device_node *np;

      np = of_find_node_by_type(NULL, "open-pic");
      if (np == NULL) {
            printk(KERN_ERR "Could not find open-pic node\n");
            return;
      }

      if (of_address_to_resource(np, 0, &r)) {
            printk(KERN_ERR "Failed to map mpic register space\n");
            of_node_put(np);
            return;
      }

      mpic = mpic_alloc(np, r.start,
                    MPIC_PRIMARY | MPIC_WANTS_RESET |
                    MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS,
                  0, 256, " OpenPIC  ");
      BUG_ON(mpic == NULL);
      of_node_put(np);

      mpic_init(mpic);
}

/*
 * Setup the architecture
 */
static void __init mpc8536_ds_setup_arch(void)
{
#ifdef CONFIG_PCI
      struct device_node *np;
#endif

      if (ppc_md.progress)
            ppc_md.progress("mpc8536_ds_setup_arch()", 0);

#ifdef CONFIG_PCI
      for_each_node_by_type(np, "pci") {
            if (of_device_is_compatible(np, "fsl,mpc8540-pci") ||
                of_device_is_compatible(np, "fsl,mpc8548-pcie")) {
                  struct resource rsrc;
                  of_address_to_resource(np, 0, &rsrc);
                  if ((rsrc.start & 0xfffff) == 0x8000)
                        fsl_add_bridge(np, 1);
                  else
                        fsl_add_bridge(np, 0);
            }
      }

#endif

      printk("MPC8536 DS board from Freescale Semiconductor\n");
}

static struct of_device_id __initdata mpc8536_ds_ids[] = {
      { .type = "soc", },
      { .compatible = "soc", },
      { .compatible = "simple-bus", },
      {},
};

static int __init mpc8536_ds_publish_devices(void)
{
      return of_platform_bus_probe(NULL, mpc8536_ds_ids, NULL);
}
machine_device_initcall(mpc8536_ds, mpc8536_ds_publish_devices);

/*
 * Called very early, device-tree isn't unflattened
 */
static int __init mpc8536_ds_probe(void)
{
      unsigned long root = of_get_flat_dt_root();

      return of_flat_dt_is_compatible(root, "fsl,mpc8536ds");
}

define_machine(mpc8536_ds) {
      .name             = "MPC8536 DS",
      .probe                  = mpc8536_ds_probe,
      .setup_arch       = mpc8536_ds_setup_arch,
      .init_IRQ         = mpc8536_ds_pic_init,
#ifdef CONFIG_PCI
      .pcibios_fixup_bus      = fsl_pcibios_fixup_bus,
#endif
      .get_irq          = mpic_get_irq,
      .restart          = fsl_rstcr_restart,
      .calibrate_decr         = generic_calibrate_decr,
      .progress         = udbg_progress,
};

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