[POWERPC] ps3: add support for ps3 platform
[linux-2.6.git] / arch / powerpc / platforms / ps3 / setup.c
1 /*
2  *  PS3 platform setup routines.
3  *
4  *  Copyright (C) 2006 Sony Computer Entertainment Inc.
5  *  Copyright 2006 Sony Corp.
6  *
7  *  This program is free software; you can redistribute it and/or modify
8  *  it under the terms of the GNU General Public License as published by
9  *  the Free Software Foundation; version 2 of the License.
10  *
11  *  This program is distributed in the hope that it will be useful,
12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *  GNU General Public License for more details.
15  *
16  *  You should have received a copy of the GNU General Public License
17  *  along with this program; if not, write to the Free Software
18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19  */
20
21 #include <linux/kernel.h>
22 #include <linux/delay.h>
23 #include <linux/fs.h>
24 #include <linux/root_dev.h>
25 #include <linux/console.h>
26 #include <linux/kexec.h>
27
28 #include <asm/machdep.h>
29 #include <asm/firmware.h>
30 #include <asm/time.h>
31 #include <asm/iommu.h>
32 #include <asm/udbg.h>
33 #include <asm/prom.h>
34 #include <asm/lv1call.h>
35
36 #include "platform.h"
37
38 #if defined(DEBUG)
39 #define DBG(fmt...) udbg_printf(fmt)
40 #else
41 #define DBG(fmt...) do{if(0)printk(fmt);}while(0)
42 #endif
43
44 static void ps3_show_cpuinfo(struct seq_file *m)
45 {
46         seq_printf(m, "machine\t\t: %s\n", ppc_md.name);
47 }
48
49 static void ps3_power_save(void)
50 {
51         /*
52          * lv1_pause() puts the PPE thread into inactive state until an
53          * irq on an unmasked plug exists. MSR[EE] has no effect.
54          * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt.
55          */
56
57         lv1_pause(0);
58 }
59
60 static void ps3_panic(char *str)
61 {
62         DBG("%s:%d %s\n", __func__, __LINE__, str);
63
64 #ifdef CONFIG_SMP
65         smp_send_stop();
66 #endif
67         printk("\n");
68         printk("   System does not reboot automatically.\n");
69         printk("   Please press POWER button.\n");
70         printk("\n");
71
72         for (;;) ;
73 }
74
75 static void __init ps3_setup_arch(void)
76 {
77         DBG(" -> %s:%d\n", __func__, __LINE__);
78
79         ps3_spu_set_platform();
80         ps3_map_htab();
81
82 #ifdef CONFIG_SMP
83         smp_init_ps3();
84 #endif
85
86 #ifdef CONFIG_DUMMY_CONSOLE
87         conswitchp = &dummy_con;
88 #endif
89
90         ppc_md.power_save = ps3_power_save;
91
92         DBG(" <- %s:%d\n", __func__, __LINE__);
93 }
94
95 static void __init ps3_progress(char *s, unsigned short hex)
96 {
97         printk("*** %04x : %s\n", hex, s ? s : "");
98 }
99
100 static int __init ps3_probe(void)
101 {
102         unsigned long htab_size;
103         unsigned long dt_root;
104
105         DBG(" -> %s:%d\n", __func__, __LINE__);
106
107         dt_root = of_get_flat_dt_root();
108         if (!of_flat_dt_is_compatible(dt_root, "PS3"))
109                 return 0;
110
111         powerpc_firmware_features |= FW_FEATURE_LPAR;
112
113         ps3_os_area_init();
114         ps3_mm_init();
115         ps3_mm_vas_create(&htab_size);
116         ps3_hpte_init(htab_size);
117
118         DBG(" <- %s:%d\n", __func__, __LINE__);
119         return 1;
120 }
121
122 #if defined(CONFIG_KEXEC)
123 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary)
124 {
125         DBG(" -> %s:%d\n", __func__, __LINE__);
126
127         if (secondary) {
128                 int cpu;
129                 for_each_online_cpu(cpu)
130                         if (cpu)
131                                 ps3_smp_cleanup_cpu(cpu);
132         } else
133                 ps3_smp_cleanup_cpu(0);
134
135         DBG(" <- %s:%d\n", __func__, __LINE__);
136 }
137
138 static void ps3_machine_kexec(struct kimage *image)
139 {
140         unsigned long ppe_id;
141
142         DBG(" -> %s:%d\n", __func__, __LINE__);
143
144         lv1_get_logical_ppe_id(&ppe_id);
145         lv1_configure_irq_state_bitmap(ppe_id, 0, 0);
146         ps3_mm_shutdown();
147         ps3_mm_vas_destroy();
148
149         default_machine_kexec(image);
150
151         DBG(" <- %s:%d\n", __func__, __LINE__);
152 }
153 #endif
154
155 define_machine(ps3) {
156         .name                           = "PS3",
157         .probe                          = ps3_probe,
158         .setup_arch                     = ps3_setup_arch,
159         .show_cpuinfo                   = ps3_show_cpuinfo,
160         .init_IRQ                       = ps3_init_IRQ,
161         .panic                          = ps3_panic,
162         .get_boot_time                  = ps3_get_boot_time,
163         .set_rtc_time                   = ps3_set_rtc_time,
164         .get_rtc_time                   = ps3_get_rtc_time,
165         .calibrate_decr                 = ps3_calibrate_decr,
166         .progress                       = ps3_progress,
167 #if defined(CONFIG_KEXEC)
168         .kexec_cpu_down                 = ps3_kexec_cpu_down,
169         .machine_kexec                  = ps3_machine_kexec,
170         .machine_kexec_prepare          = default_machine_kexec_prepare,
171         .machine_crash_shutdown         = default_machine_crash_shutdown,
172 #endif
173 };