LXR linux/arch/powerpc/platforms/52xx/mpc5200

   1/*
   2 * Support for 'mpc5200-simple-platform' compatible boards.
   3 *
   4 * Written by Marian Balakowicz <m8@semihalf.com>
   5 * Copyright (C) 2007 Semihalf
   6 *
   7 * This program is free software; you can redistribute  it and/or modify it
   8 * under  the terms of  the GNU General  Public License as published by the
   9 * Free Software Foundation;  either version 2 of the  License, or (at your
  10 * option) any later version.
  11 *
  12 * Description:
  13 * This code implements support for a simple MPC52xx based boards which
  14 * do not need a custom platform specific setup. Such boards are
  15 * supported assuming the following:
  16 *
  17 * - GPIO pins are configured by the firmware,
  18 * - CDM configuration (clocking) is setup correctly by firmware,
  19 * - if the 'fsl,has-wdt' property is present in one of the
  20 *   gpt nodes, then it is safe to use such gpt to reset the board,
  21 * - PCI is supported if enabled in the kernel configuration
  22 *   and if there is a PCI bus node defined in the device tree.
  23 *
  24 * Boards that are compatible with this generic platform support
  25 * are listed in a 'board' table.
  26 */
  27
  28#undef DEBUG
  29#include <asm/time.h>
  30#include <asm/prom.h>
  31#include <asm/machdep.h>
  32#include <asm/mpc52xx.h>
  33
  34/*
  35 * Setup the architecture
  36 */
  37static void __init mpc5200_simple_setup_arch(void)
  38{
  39        if (ppc_md.progress)
  40                ppc_md.progress("mpc5200_simple_setup_arch()", 0);
  41
  42        /* Map important registers from the internal memory map */
  43        mpc52xx_map_common_devices();
  44
  45        /* Some mpc5200 & mpc5200b related configuration */
  46        mpc5200_setup_xlb_arbiter();
  47
  48        mpc52xx_setup_pci();
  49}
  50
  51/* list of the supported boards */
  52static char *board[] __initdata = {
  53        "intercontrol,digsy-mtc",
  54        "manroland,mucmc52",
  55        "manroland,uc101",
  56        "phytec,pcm030",
  57        "phytec,pcm032",
  58        "promess,motionpro",
  59        "schindler,cm5200",
  60        "tqc,tqm5200",
  61        NULL
  62};
  63
  64/*
  65 * Called very early, MMU is off, device-tree isn't unflattened
  66 */
  67static int __init mpc5200_simple_probe(void)
  68{
  69        unsigned long node = of_get_flat_dt_root();
  70        int i = 0;
  71
  72        while (board[i]) {
  73                if (of_flat_dt_is_compatible(node, board[i]))
  74                        break;
  75                i++;
  76        }
  77        
  78        return (board[i] != NULL);
  79}
  80
  81define_machine(mpc5200_simple_platform) {
  82        .name           = "mpc5200-simple-platform",
  83        .probe          = mpc5200_simple_probe,
  84        .setup_arch     = mpc5200_simple_setup_arch,
  85        .init           = mpc52xx_declare_of_platform_devices,
  86        .init_IRQ       = mpc52xx_init_irq,
  87        .get_irq        = mpc52xx_get_irq,
  88        .restart        = mpc52xx_restart,
  89        .calibrate_decr = generic_calibrate_decr,
  90};
  91