LXR linux/arch/powerpc/platforms/83xx/mpc837x

   1/*
   2 * arch/powerpc/platforms/83xx/mpc837x_rdb.c
   3 *
   4 * Copyright (C) 2007 Freescale Semicondutor, Inc. All rights reserved.
   5 *
   6 * MPC837x RDB board specific routines
   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/pci.h>
  15#include <linux/of_platform.h>
  16
  17#include <asm/time.h>
  18#include <asm/ipic.h>
  19#include <asm/udbg.h>
  20#include <sysdev/fsl_soc.h>
  21#include <sysdev/fsl_pci.h>
  22
  23#include "mpc83xx.h"
  24
  25static void mpc837x_rdb_sd_cfg(void)
  26{
  27        void __iomem *im;
  28
  29        im = ioremap(get_immrbase(), 0x1000);
  30        if (!im) {
  31                WARN_ON(1);
  32                return;
  33        }
  34
  35        /*
  36         * On RDB boards (in contrast to MDS) USBB pins are used for SD only,
  37         * so we can safely mux them away from the USB block.
  38         */
  39        clrsetbits_be32(im + MPC83XX_SICRL_OFFS, MPC837X_SICRL_USBB_MASK,
  40                                                 MPC837X_SICRL_SD);
  41        clrsetbits_be32(im + MPC83XX_SICRH_OFFS, MPC837X_SICRH_SPI_MASK,
  42                                                 MPC837X_SICRH_SD);
  43        iounmap(im);
  44}
  45
  46/* ************************************************************************
  47 *
  48 * Setup the architecture
  49 *
  50 */
  51static void __init mpc837x_rdb_setup_arch(void)
  52{
  53#ifdef CONFIG_PCI
  54        struct device_node *np;
  55#endif
  56
  57        if (ppc_md.progress)
  58                ppc_md.progress("mpc837x_rdb_setup_arch()", 0);
  59
  60#ifdef CONFIG_PCI
  61        for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
  62                mpc83xx_add_bridge(np);
  63        for_each_compatible_node(np, "pci", "fsl,mpc8314-pcie")
  64                mpc83xx_add_bridge(np);
  65#endif
  66        mpc837x_usb_cfg();
  67        mpc837x_rdb_sd_cfg();
  68}
  69
  70static struct of_device_id mpc837x_ids[] = {
  71        { .type = "soc", },
  72        { .compatible = "soc", },
  73        { .compatible = "simple-bus", },
  74        { .compatible = "gianfar", },
  75        {},
  76};
  77
  78static int __init mpc837x_declare_of_platform_devices(void)
  79{
  80        /* Publish of_device */
  81        of_platform_bus_probe(NULL, mpc837x_ids, NULL);
  82
  83        return 0;
  84}
  85machine_device_initcall(mpc837x_rdb, mpc837x_declare_of_platform_devices);
  86
  87static void __init mpc837x_rdb_init_IRQ(void)
  88{
  89        struct device_node *np;
  90
  91        np = of_find_compatible_node(NULL, NULL, "fsl,ipic");
  92        if (!np)
  93                return;
  94
  95        ipic_init(np, 0);
  96
  97        /* Initialize the default interrupt mapping priorities,
  98         * in case the boot rom changed something on us.
  99         */
 100        ipic_set_default_priority();
 101}
 102
 103/*
 104 * Called very early, MMU is off, device-tree isn't unflattened
 105 */
 106static int __init mpc837x_rdb_probe(void)
 107{
 108        unsigned long root = of_get_flat_dt_root();
 109
 110        return of_flat_dt_is_compatible(root, "fsl,mpc8377rdb") ||
 111               of_flat_dt_is_compatible(root, "fsl,mpc8378rdb") ||
 112               of_flat_dt_is_compatible(root, "fsl,mpc8379rdb") ||
 113               of_flat_dt_is_compatible(root, "fsl,mpc8377wlan");
 114}
 115
 116define_machine(mpc837x_rdb) {
 117        .name                   = "MPC837x RDB/WLAN",
 118        .probe                  = mpc837x_rdb_probe,
 119        .setup_arch             = mpc837x_rdb_setup_arch,
 120        .init_IRQ               = mpc837x_rdb_init_IRQ,
 121        .get_irq                = ipic_get_irq,
 122        .restart                = mpc83xx_restart,
 123        .time_init              = mpc83xx_time_init,
 124        .calibrate_decr         = generic_calibrate_decr,
 125        .progress               = udbg_progress,
 126};
 127