1 /*
2 * Architecture- / platform-specific boot-time initialization code for
3 * IBM PowerPC 4xx based boards. Adapted from original
4 * code by Gary Thomas, Cort Dougan <cort@fsmlabs.com>, and Dan Malek
5 * <dan@net4x.com>.
6 *
7 * Copyright(c) 1999-2000 Grant Erickson <grant@lcse.umn.edu>
8 *
9 * Rewritten and ported to the merged powerpc tree:
10 * Copyright 2007 IBM Corporation
11 * Josh Boyer <jwboyer@linux.vnet.ibm.com>
12 *
13 * 2002 (c) MontaVista, Software, Inc. This file is licensed under
14 * the terms of the GNU General Public License version 2. This program
15 * is licensed "as is" without any warranty of any kind, whether express
16 * or implied.
17 */
18
19 #include <linux/init.h>
20 #include <linux/of_platform.h>
21 #include <linux/rtc.h>
22
23 #include <asm/machdep.h>
24 #include <asm/prom.h>
25 #include <asm/udbg.h>
26 #include <asm/time.h>
27 #include <asm/uic.h>
28 #include <asm/pci-bridge.h>
29 #include <asm/ppc4xx.h>
30
31 static const struct of_device_id walnut_of_bus[] __initconst = {
32 { .compatible = "ibm,plb3", },
33 { .compatible = "ibm,opb", },
34 { .compatible = "ibm,ebc", },
35 {},
36 };
37
walnut_device_probe(void)38 static int __init walnut_device_probe(void)
39 {
40 of_platform_bus_probe(NULL, walnut_of_bus, NULL);
41 of_instantiate_rtc();
42
43 return 0;
44 }
45 machine_device_initcall(walnut, walnut_device_probe);
46
walnut_probe(void)47 static int __init walnut_probe(void)
48 {
49 if (!of_machine_is_compatible("ibm,walnut"))
50 return 0;
51
52 pci_set_flags(PCI_REASSIGN_ALL_RSRC);
53
54 return 1;
55 }
56
define_machine(walnut)57 define_machine(walnut) {
58 .name = "Walnut",
59 .probe = walnut_probe,
60 .progress = udbg_progress,
61 .init_IRQ = uic_init_tree,
62 .get_irq = uic_get_irq,
63 .restart = ppc4xx_reset_system,
64 .calibrate_decr = generic_calibrate_decr,
65 };
66
