1 /*
2  * arch/powerpc/platforms/83xx/mpc834x_itx.c
3  *
4  * MPC834x ITX board specific routines
5  *
6  * Maintainer: Kumar Gala <galak@kernel.crashing.org>
7  *
8  * This program is free software; you can redistribute  it and/or modify it
9  * under  the terms of  the GNU General  Public License as published by the
10  * Free Software Foundation;  either version 2 of the  License, or (at your
11  * option) any later version.
12  */
13 
14 #include <linux/stddef.h>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/errno.h>
18 #include <linux/reboot.h>
19 #include <linux/pci.h>
20 #include <linux/kdev_t.h>
21 #include <linux/major.h>
22 #include <linux/console.h>
23 #include <linux/delay.h>
24 #include <linux/seq_file.h>
25 #include <linux/root_dev.h>
26 #include <linux/of_platform.h>
27 
28 #include <asm/system.h>
29 #include <asm/atomic.h>
30 #include <asm/time.h>
31 #include <asm/io.h>
32 #include <asm/machdep.h>
33 #include <asm/ipic.h>
34 #include <asm/irq.h>
35 #include <asm/prom.h>
36 #include <asm/udbg.h>
37 #include <sysdev/fsl_soc.h>
38 #include <sysdev/fsl_pci.h>
39 
40 #include "mpc83xx.h"
41 
42 static struct of_device_id __initdata mpc834x_itx_ids[] = {
43 	{ .compatible = "fsl,pq2pro-localbus", },
44 	{ .compatible = "simple-bus", },
45 	{ .compatible = "gianfar", },
46 	{},
47 };
48 
49 static int __init mpc834x_itx_declare_of_platform_devices(void)
50 {
51 	return of_platform_bus_probe(NULL, mpc834x_itx_ids, NULL);
52 }
53 machine_device_initcall(mpc834x_itx, mpc834x_itx_declare_of_platform_devices);
54 
55 /* ************************************************************************
56  *
57  * Setup the architecture
58  *
59  */
60 static void __init mpc834x_itx_setup_arch(void)
61 {
62 #ifdef CONFIG_PCI
63 	struct device_node *np;
64 #endif
65 
66 	if (ppc_md.progress)
67 		ppc_md.progress("mpc834x_itx_setup_arch()", 0);
68 
69 #ifdef CONFIG_PCI
70 	for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
71 		mpc83xx_add_bridge(np);
72 #endif
73 
74 	mpc834x_usb_cfg();
75 }
76 
77 static void __init mpc834x_itx_init_IRQ(void)
78 {
79 	struct device_node *np;
80 
81 	np = of_find_node_by_type(NULL, "ipic");
82 	if (!np)
83 		return;
84 
85 	ipic_init(np, 0);
86 
87 	/* Initialize the default interrupt mapping priorities,
88 	 * in case the boot rom changed something on us.
89 	 */
90 	ipic_set_default_priority();
91 }
92 
93 /*
94  * Called very early, MMU is off, device-tree isn't unflattened
95  */
96 static int __init mpc834x_itx_probe(void)
97 {
98         unsigned long root = of_get_flat_dt_root();
99 
100         return of_flat_dt_is_compatible(root, "MPC834xMITX");
101 }
102 
103 define_machine(mpc834x_itx) {
104 	.name			= "MPC834x ITX",
105 	.probe			= mpc834x_itx_probe,
106 	.setup_arch		= mpc834x_itx_setup_arch,
107 	.init_IRQ		= mpc834x_itx_init_IRQ,
108 	.get_irq		= ipic_get_irq,
109 	.restart		= mpc83xx_restart,
110 	.time_init		= mpc83xx_time_init,
111 	.calibrate_decr		= generic_calibrate_decr,
112 	.progress		= udbg_progress,
113 };
114