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 const char *board[] __initdata = {
53	"anonymous,a3m071",
54	"anonymous,a4m072",
55	"anon,charon",
56	"ifm,o2d",
57	"intercontrol,digsy-mtc",
58	"manroland,mucmc52",
59	"manroland,uc101",
60	"phytec,pcm030",
61	"phytec,pcm032",
62	"promess,motionpro",
63	"schindler,cm5200",
64	"tqc,tqm5200",
65	NULL
66};
67
68/*
69 * Called very early, MMU is off, device-tree isn't unflattened
70 */
71static int __init mpc5200_simple_probe(void)
72{
73	return of_flat_dt_match(of_get_flat_dt_root(), board);
74}
75
76define_machine(mpc5200_simple_platform) {
77	.name		= "mpc5200-simple-platform",
78	.probe		= mpc5200_simple_probe,
79	.setup_arch	= mpc5200_simple_setup_arch,
80	.init		= mpc52xx_declare_of_platform_devices,
81	.init_IRQ	= mpc52xx_init_irq,
82	.get_irq	= mpc52xx_get_irq,
83	.restart	= mpc52xx_restart,
84	.calibrate_decr	= generic_calibrate_decr,
85};
86