[POWERPC] 83xx: Add MPC832x RDB board support.
[linux-2.6.git] / arch / powerpc / platforms / 83xx / mpc832x_rdb.c
1 /*
2  * arch/powerpc/platforms/83xx/mpc832x_rdb.c
3  *
4  * Copyright (C) Freescale Semiconductor, Inc. 2007. All rights reserved.
5  *
6  * Description:
7  * MPC832x RDB board specific routines.
8  * This file is based on mpc832x_mds.c and mpc8313_rdb.c
9  * Author: Michael Barkowski <michael.barkowski@freescale.com>
10  *
11  * This program is free software; you can redistribute  it and/or modify it
12  * under  the terms of  the GNU General  Public License as published by the
13  * Free Software Foundation;  either version 2 of the  License, or (at your
14  * option) any later version.
15  */
16
17 #include <linux/pci.h>
18
19 #include <asm/of_platform.h>
20 #include <asm/time.h>
21 #include <asm/ipic.h>
22 #include <asm/udbg.h>
23 #include <asm/qe.h>
24 #include <asm/qe_ic.h>
25
26 #include "mpc83xx.h"
27
28 #undef DEBUG
29 #ifdef DEBUG
30 #define DBG(fmt...) udbg_printf(fmt)
31 #else
32 #define DBG(fmt...)
33 #endif
34
35 #ifndef CONFIG_PCI
36 unsigned long isa_io_base = 0;
37 unsigned long isa_mem_base = 0;
38 #endif
39
40 /* ************************************************************************
41  *
42  * Setup the architecture
43  *
44  */
45 static void __init mpc832x_rdb_setup_arch(void)
46 {
47         struct device_node *np;
48
49         if (ppc_md.progress)
50                 ppc_md.progress("mpc832x_rdb_setup_arch()", 0);
51
52 #ifdef CONFIG_PCI
53         for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
54                 add_bridge(np);
55
56         ppc_md.pci_exclude_device = mpc83xx_exclude_device;
57 #endif
58
59 #ifdef CONFIG_QUICC_ENGINE
60         qe_reset();
61
62         if ((np = of_find_node_by_name(np, "par_io")) != NULL) {
63                 par_io_init(np);
64                 of_node_put(np);
65
66                 for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
67                         par_io_of_config(np);
68         }
69 #endif                          /* CONFIG_QUICC_ENGINE */
70 }
71
72 static struct of_device_id mpc832x_ids[] = {
73         { .type = "soc", },
74         { .compatible = "soc", },
75         { .type = "qe", },
76         {},
77 };
78
79 static int __init mpc832x_declare_of_platform_devices(void)
80 {
81         if (!machine_is(mpc832x_rdb))
82                 return 0;
83
84         /* Publish the QE devices */
85         of_platform_bus_probe(NULL, mpc832x_ids, NULL);
86
87         return 0;
88 }
89 device_initcall(mpc832x_declare_of_platform_devices);
90
91 void __init mpc832x_rdb_init_IRQ(void)
92 {
93
94         struct device_node *np;
95
96         np = of_find_node_by_type(NULL, "ipic");
97         if (!np)
98                 return;
99
100         ipic_init(np, 0);
101
102         /* Initialize the default interrupt mapping priorities,
103          * in case the boot rom changed something on us.
104          */
105         ipic_set_default_priority();
106         of_node_put(np);
107
108 #ifdef CONFIG_QUICC_ENGINE
109         np = of_find_node_by_type(NULL, "qeic");
110         if (!np)
111                 return;
112
113         qe_ic_init(np, 0);
114         of_node_put(np);
115 #endif                          /* CONFIG_QUICC_ENGINE */
116 }
117
118 /*
119  * Called very early, MMU is off, device-tree isn't unflattened
120  */
121 static int __init mpc832x_rdb_probe(void)
122 {
123         unsigned long root = of_get_flat_dt_root();
124
125         return of_flat_dt_is_compatible(root, "MPC832xRDB");
126 }
127
128 define_machine(mpc832x_rdb) {
129         .name           = "MPC832x RDB",
130         .probe          = mpc832x_rdb_probe,
131         .setup_arch     = mpc832x_rdb_setup_arch,
132         .init_IRQ       = mpc832x_rdb_init_IRQ,
133         .get_irq        = ipic_get_irq,
134         .restart        = mpc83xx_restart,
135         .time_init      = mpc83xx_time_init,
136         .calibrate_decr = generic_calibrate_decr,
137         .progress       = udbg_progress,
138 };