Merge branch 'linus' into timers/nohz
[linux-2.6] / arch / powerpc / platforms / 85xx / mpc8536_ds.c
1 /*
2  * MPC8536 DS Board Setup
3  *
4  * Copyright 2008 Freescale Semiconductor, Inc.
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;  either version 2 of the  License, or (at your
9  * option) any later version.
10  */
11
12 #include <linux/stddef.h>
13 #include <linux/kernel.h>
14 #include <linux/pci.h>
15 #include <linux/kdev_t.h>
16 #include <linux/delay.h>
17 #include <linux/seq_file.h>
18 #include <linux/interrupt.h>
19 #include <linux/of_platform.h>
20
21 #include <asm/system.h>
22 #include <asm/time.h>
23 #include <asm/machdep.h>
24 #include <asm/pci-bridge.h>
25 #include <mm/mmu_decl.h>
26 #include <asm/prom.h>
27 #include <asm/udbg.h>
28 #include <asm/mpic.h>
29
30 #include <sysdev/fsl_soc.h>
31 #include <sysdev/fsl_pci.h>
32
33 void __init mpc8536_ds_pic_init(void)
34 {
35         struct mpic *mpic;
36         struct resource r;
37         struct device_node *np;
38
39         np = of_find_node_by_type(NULL, "open-pic");
40         if (np == NULL) {
41                 printk(KERN_ERR "Could not find open-pic node\n");
42                 return;
43         }
44
45         if (of_address_to_resource(np, 0, &r)) {
46                 printk(KERN_ERR "Failed to map mpic register space\n");
47                 of_node_put(np);
48                 return;
49         }
50
51         mpic = mpic_alloc(np, r.start,
52                           MPIC_PRIMARY | MPIC_WANTS_RESET |
53                           MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS,
54                         0, 256, " OpenPIC  ");
55         BUG_ON(mpic == NULL);
56         of_node_put(np);
57
58         mpic_init(mpic);
59 }
60
61 /*
62  * Setup the architecture
63  */
64 static void __init mpc8536_ds_setup_arch(void)
65 {
66 #ifdef CONFIG_PCI
67         struct device_node *np;
68 #endif
69
70         if (ppc_md.progress)
71                 ppc_md.progress("mpc8536_ds_setup_arch()", 0);
72
73 #ifdef CONFIG_PCI
74         for_each_node_by_type(np, "pci") {
75                 if (of_device_is_compatible(np, "fsl,mpc8540-pci") ||
76                     of_device_is_compatible(np, "fsl,mpc8548-pcie")) {
77                         struct resource rsrc;
78                         of_address_to_resource(np, 0, &rsrc);
79                         if ((rsrc.start & 0xfffff) == 0x8000)
80                                 fsl_add_bridge(np, 1);
81                         else
82                                 fsl_add_bridge(np, 0);
83                 }
84         }
85
86 #endif
87
88         printk("MPC8536 DS board from Freescale Semiconductor\n");
89 }
90
91 static struct of_device_id __initdata mpc8536_ds_ids[] = {
92         { .type = "soc", },
93         { .compatible = "soc", },
94         {},
95 };
96
97 static int __init mpc8536_ds_publish_devices(void)
98 {
99         return of_platform_bus_probe(NULL, mpc8536_ds_ids, NULL);
100 }
101 machine_device_initcall(mpc8536_ds, mpc8536_ds_publish_devices);
102
103 /*
104  * Called very early, device-tree isn't unflattened
105  */
106 static int __init mpc8536_ds_probe(void)
107 {
108         unsigned long root = of_get_flat_dt_root();
109
110         return of_flat_dt_is_compatible(root, "fsl,mpc8536ds");
111 }
112
113 define_machine(mpc8536_ds) {
114         .name                   = "MPC8536 DS",
115         .probe                  = mpc8536_ds_probe,
116         .setup_arch             = mpc8536_ds_setup_arch,
117         .init_IRQ               = mpc8536_ds_pic_init,
118 #ifdef CONFIG_PCI
119         .pcibios_fixup_bus      = fsl_pcibios_fixup_bus,
120 #endif
121         .get_irq                = mpic_get_irq,
122         .restart                = fsl_rstcr_restart,
123         .calibrate_decr         = generic_calibrate_decr,
124         .progress               = udbg_progress,
125 };