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

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Support for 'mpc5200-simple-platform' compatible boards.
   4 *
   5 * Written by Marian Balakowicz <m8@semihalf.com>
   6 * Copyright (C) 2007 Semihalf
   7 *
   8 * Description:
   9 * This code implements support for a simple MPC52xx based boards which
  10 * do not need a custom platform specific setup. Such boards are
  11 * supported assuming the following:
  12 *
  13 * - GPIO pins are configured by the firmware,
  14 * - CDM configuration (clocking) is setup correctly by firmware,
  15 * - if the 'fsl,has-wdt' property is present in one of the
  16 *   gpt nodes, then it is safe to use such gpt to reset the board,
  17 * - PCI is supported if enabled in the kernel configuration
  18 *   and if there is a PCI bus node defined in the device tree.
  19 *
  20 * Boards that are compatible with this generic platform support
  21 * are listed in a 'board' table.
  22 */
  23
  24#undef DEBUG
  25#include <asm/time.h>
  26#include <asm/prom.h>
  27#include <asm/machdep.h>
  28#include <asm/mpc52xx.h>
  29
  30/*
  31 * Setup the architecture
  32 */
  33static void __init mpc5200_simple_setup_arch(void)
  34{
  35        if (ppc_md.progress)
  36                ppc_md.progress("mpc5200_simple_setup_arch()", 0);
  37
  38        /* Map important registers from the internal memory map */
  39        mpc52xx_map_common_devices();
  40
  41        /* Some mpc5200 & mpc5200b related configuration */
  42        mpc5200_setup_xlb_arbiter();
  43
  44        mpc52xx_setup_pci();
  45}
  46
  47/* list of the supported boards */
  48static const char *board[] __initdata = {
  49        "anonymous,a3m071",
  50        "anonymous,a4m072",
  51        "anon,charon",
  52        "ifm,o2d",
  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        return of_device_compatible_match(of_root, board);
  70}
  71
  72define_machine(mpc5200_simple_platform) {
  73        .name           = "mpc5200-simple-platform",
  74        .probe          = mpc5200_simple_probe,
  75        .setup_arch     = mpc5200_simple_setup_arch,
  76        .init           = mpc52xx_declare_of_platform_devices,
  77        .init_IRQ       = mpc52xx_init_irq,
  78        .get_irq        = mpc52xx_get_irq,
  79        .restart        = mpc52xx_restart,
  80        .calibrate_decr = generic_calibrate_decr,
  81};
  82