linux/arch/powerpc/platforms/83xx/mpc837x_rdb.c
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   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        if (ppc_md.progress)
  54                ppc_md.progress("mpc837x_rdb_setup_arch()", 0);
  55
  56        mpc83xx_setup_pci();
  57        mpc837x_usb_cfg();
  58        mpc837x_rdb_sd_cfg();
  59}
  60
  61machine_device_initcall(mpc837x_rdb, mpc83xx_declare_of_platform_devices);
  62
  63static const char *board[] __initdata = {
  64        "fsl,mpc8377rdb",
  65        "fsl,mpc8378rdb",
  66        "fsl,mpc8379rdb",
  67        "fsl,mpc8377wlan",
  68        NULL
  69};
  70
  71/*
  72 * Called very early, MMU is off, device-tree isn't unflattened
  73 */
  74static int __init mpc837x_rdb_probe(void)
  75{
  76        return of_flat_dt_match(of_get_flat_dt_root(), board);
  77}
  78
  79define_machine(mpc837x_rdb) {
  80        .name                   = "MPC837x RDB/WLAN",
  81        .probe                  = mpc837x_rdb_probe,
  82        .setup_arch             = mpc837x_rdb_setup_arch,
  83        .init_IRQ               = mpc83xx_ipic_init_IRQ,
  84        .get_irq                = ipic_get_irq,
  85        .restart                = mpc83xx_restart,
  86        .time_init              = mpc83xx_time_init,
  87        .calibrate_decr         = generic_calibrate_decr,
  88        .progress               = udbg_progress,
  89};
  90