Remove all inclusions of <linux/config.h>
[linux-3.10.git] / arch / powerpc / platforms / pasemi / setup.c
1 /*
2  * Copyright (C) 2006 PA Semi, Inc
3  *
4  * Authors: Kip Walker, PA Semi
5  *          Olof Johansson, PA Semi
6  *
7  * Maintained by: Olof Johansson <olof@lixom.net>
8  *
9  * Based on arch/powerpc/platforms/maple/setup.c
10  *
11  * This program is free software; you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License version 2 as
13  * published by the Free Software Foundation.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program; if not, write to the Free Software
22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
23  */
24
25 #include <linux/errno.h>
26 #include <linux/kernel.h>
27 #include <linux/delay.h>
28 #include <linux/console.h>
29
30 #include <asm/prom.h>
31 #include <asm/system.h>
32 #include <asm/iommu.h>
33 #include <asm/machdep.h>
34 #include <asm/mpic.h>
35 #include <asm/smp.h>
36 #include <asm/time.h>
37
38 #include "pasemi.h"
39
40 static void pas_restart(char *cmd)
41 {
42         printk("restart unimplemented, looping...\n");
43         for (;;) ;
44 }
45
46 static void pas_power_off(void)
47 {
48         printk("power off unimplemented, looping...\n");
49         for (;;) ;
50 }
51
52 static void pas_halt(void)
53 {
54         pas_power_off();
55 }
56
57 #ifdef CONFIG_SMP
58 struct smp_ops_t pas_smp_ops = {
59         .probe          = smp_mpic_probe,
60         .message_pass   = smp_mpic_message_pass,
61         .kick_cpu       = smp_generic_kick_cpu,
62         .setup_cpu      = smp_mpic_setup_cpu,
63         .give_timebase  = smp_generic_give_timebase,
64         .take_timebase  = smp_generic_take_timebase,
65 };
66 #endif /* CONFIG_SMP */
67
68 void __init pas_setup_arch(void)
69 {
70 #ifdef CONFIG_SMP
71         /* Setup SMP callback */
72         smp_ops = &pas_smp_ops;
73 #endif
74         /* Lookup PCI hosts */
75         pas_pci_init();
76
77 #ifdef CONFIG_DUMMY_CONSOLE
78         conswitchp = &dummy_con;
79 #endif
80
81         printk(KERN_DEBUG "Using default idle loop\n");
82 }
83
84 static void iommu_dev_setup_null(struct pci_dev *dev) { }
85 static void iommu_bus_setup_null(struct pci_bus *bus) { }
86
87 static void __init pas_init_early(void)
88 {
89         /* No iommu code yet */
90         ppc_md.iommu_dev_setup = iommu_dev_setup_null;
91         ppc_md.iommu_bus_setup = iommu_bus_setup_null;
92         pci_direct_iommu_init();
93 }
94
95 /* No legacy IO on our parts */
96 static int pas_check_legacy_ioport(unsigned int baseport)
97 {
98         return -ENODEV;
99 }
100
101 static __init void pas_init_IRQ(void)
102 {
103         struct device_node *np;
104         struct device_node *root, *mpic_node;
105         unsigned long openpic_addr;
106         const unsigned int *opprop;
107         int naddr, opplen;
108         struct mpic *mpic;
109
110         mpic_node = NULL;
111
112         for_each_node_by_type(np, "interrupt-controller")
113                 if (device_is_compatible(np, "open-pic")) {
114                         mpic_node = np;
115                         break;
116                 }
117         if (!mpic_node)
118                 for_each_node_by_type(np, "open-pic") {
119                         mpic_node = np;
120                         break;
121                 }
122         if (!mpic_node) {
123                 printk(KERN_ERR
124                         "Failed to locate the MPIC interrupt controller\n");
125                 return;
126         }
127
128         /* Find address list in /platform-open-pic */
129         root = of_find_node_by_path("/");
130         naddr = prom_n_addr_cells(root);
131         opprop = get_property(root, "platform-open-pic", &opplen);
132         if (!opprop) {
133                 printk(KERN_ERR "No platform-open-pic property.\n");
134                 of_node_put(root);
135                 return;
136         }
137         openpic_addr = of_read_number(opprop, naddr);
138         printk(KERN_DEBUG "OpenPIC addr: %lx\n", openpic_addr);
139         of_node_put(root);
140
141         mpic = mpic_alloc(mpic_node, openpic_addr, MPIC_PRIMARY, 0, 0,
142                           " PAS-OPIC  ");
143         BUG_ON(!mpic);
144
145         mpic_assign_isu(mpic, 0, openpic_addr + 0x10000);
146         mpic_init(mpic);
147         of_node_put(mpic_node);
148         of_node_put(root);
149 }
150
151 static void __init pas_progress(char *s, unsigned short hex)
152 {
153         printk("[%04x] : %s\n", hex, s ? s : "");
154 }
155
156
157 /*
158  * Called very early, MMU is off, device-tree isn't unflattened
159  */
160 static int __init pas_probe(void)
161 {
162         unsigned long root = of_get_flat_dt_root();
163
164         if (!of_flat_dt_is_compatible(root, "PA6T-1682M"))
165                 return 0;
166
167         hpte_init_native();
168
169         return 1;
170 }
171
172 define_machine(pas) {
173         .name                   = "PA Semi PA6T-1682M",
174         .probe                  = pas_probe,
175         .setup_arch             = pas_setup_arch,
176         .init_early             = pas_init_early,
177         .init_IRQ               = pas_init_IRQ,
178         .get_irq                = mpic_get_irq,
179         .pcibios_fixup          = pas_pcibios_fixup,
180         .restart                = pas_restart,
181         .power_off              = pas_power_off,
182         .halt                   = pas_halt,
183         .get_boot_time          = pas_get_boot_time,
184         .calibrate_decr         = generic_calibrate_decr,
185         .check_legacy_ioport    = pas_check_legacy_ioport,
186         .progress               = pas_progress,
187 };