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
mpc834x_itx_declare_of_platform_devices(void)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 */
mpc834x_itx_setup_arch(void)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
mpc834x_itx_init_IRQ(void)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 */
mpc834x_itx_probe(void)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
define_machine(mpc834x_itx)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