1/*
2 * Generic PowerPC 40x platform support
3 *
4 * Copyright 2008 IBM Corporation
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; version 2 of the License.
9 *
10 * This implements simple platform support for PowerPC 44x chips.  This is
11 * mostly used for eval boards or other simple and "generic" 44x boards.  If
12 * your board has custom functions or hardware, then you will likely want to
13 * implement your own board.c file to accommodate it.
14 */
15
16#include <asm/machdep.h>
17#include <asm/pci-bridge.h>
18#include <asm/ppc4xx.h>
19#include <asm/prom.h>
20#include <asm/time.h>
21#include <asm/udbg.h>
22#include <asm/uic.h>
23
24#include <linux/init.h>
25#include <linux/of_platform.h>
26
27static const struct of_device_id ppc40x_of_bus[] __initconst = {
28	{ .compatible = "ibm,plb3", },
29	{ .compatible = "ibm,plb4", },
30	{ .compatible = "ibm,opb", },
31	{ .compatible = "ibm,ebc", },
32	{ .compatible = "simple-bus", },
33	{},
34};
35
36static int __init ppc40x_device_probe(void)
37{
38	of_platform_bus_probe(NULL, ppc40x_of_bus, NULL);
39
40	return 0;
41}
42machine_device_initcall(ppc40x_simple, ppc40x_device_probe);
43
44/* This is the list of boards that can be supported by this simple
45 * platform code.  This does _not_ mean the boards are compatible,
46 * as they most certainly are not from a device tree perspective.
47 * However, their differences are handled by the device tree and the
48 * drivers and therefore they don't need custom board support files.
49 *
50 * Again, if your board needs to do things differently then create a
51 * board.c file for it rather than adding it to this list.
52 */
53static const char * const board[] __initconst = {
54	"amcc,acadia",
55	"amcc,haleakala",
56	"amcc,kilauea",
57	"amcc,makalu",
58	"apm,klondike",
59	"est,hotfoot",
60	"plathome,obs600",
61	NULL
62};
63
64static int __init ppc40x_probe(void)
65{
66	if (of_flat_dt_match(of_get_flat_dt_root(), board)) {
67		pci_set_flags(PCI_REASSIGN_ALL_RSRC);
68		return 1;
69	}
70
71	return 0;
72}
73
74define_machine(ppc40x_simple) {
75	.name = "PowerPC 40x Platform",
76	.probe = ppc40x_probe,
77	.progress = udbg_progress,
78	.init_IRQ = uic_init_tree,
79	.get_irq = uic_get_irq,
80	.restart = ppc4xx_reset_system,
81	.calibrate_decr = generic_calibrate_decr,
82};
83