]> nv-tegra.nvidia Code Review - linux-2.6.git/blob - arch/powerpc/platforms/ps3/setup.c
9353967666216a33c08520755ce50d1fc65709a9
[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 #include <linux/bootmem.h>
28
29 #include <asm/machdep.h>
30 #include <asm/firmware.h>
31 #include <asm/time.h>
32 #include <asm/iommu.h>
33 #include <asm/udbg.h>
34 #include <asm/prom.h>
35 #include <asm/lv1call.h>
36
37 #include "platform.h"
38
39 #if defined(DEBUG)
40 #define DBG(fmt...) udbg_printf(fmt)
41 #else
42 #define DBG(fmt...) do{if(0)printk(fmt);}while(0)
43 #endif
44
45 #if !defined(CONFIG_SMP)
46 static void smp_send_stop(void) {}
47 #endif
48
49 int ps3_get_firmware_version(union ps3_firmware_version *v)
50 {
51         int result = lv1_get_version_info(&v->raw);
52
53         if (result) {
54                 v->raw = 0;
55                 return -1;
56         }
57
58         return result;
59 }
60 EXPORT_SYMBOL_GPL(ps3_get_firmware_version);
61
62 static void ps3_power_save(void)
63 {
64         /*
65          * lv1_pause() puts the PPE thread into inactive state until an
66          * irq on an unmasked plug exists. MSR[EE] has no effect.
67          * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt.
68          */
69
70         lv1_pause(0);
71 }
72
73 static void ps3_restart(char *cmd)
74 {
75         DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd);
76
77         smp_send_stop();
78         ps3_sys_manager_restart(); /* never returns */
79 }
80
81 static void ps3_power_off(void)
82 {
83         DBG("%s:%d\n", __func__, __LINE__);
84
85         smp_send_stop();
86         ps3_sys_manager_power_off(); /* never returns */
87 }
88
89 static void ps3_panic(char *str)
90 {
91         DBG("%s:%d %s\n", __func__, __LINE__, str);
92
93         smp_send_stop();
94         printk("\n");
95         printk("   System does not reboot automatically.\n");
96         printk("   Please press POWER button.\n");
97         printk("\n");
98
99         while(1);
100 }
101
102 #ifdef CONFIG_FB_PS3
103 static void prealloc(struct ps3_prealloc *p)
104 {
105         if (!p->size)
106                 return;
107
108         p->address = __alloc_bootmem(p->size, p->align, __pa(MAX_DMA_ADDRESS));
109         if (!p->address) {
110                 printk(KERN_ERR "%s: Cannot allocate %s\n", __FUNCTION__,
111                        p->name);
112                 return;
113         }
114
115         printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
116                p->address);
117 }
118
119 struct ps3_prealloc ps3fb_videomemory = {
120     .name = "ps3fb videomemory",
121     .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024,
122     .align = 1024*1024                  /* the GPU requires 1 MiB alignment */
123 };
124 #define prealloc_ps3fb_videomemory()    prealloc(&ps3fb_videomemory)
125
126 static int __init early_parse_ps3fb(char *p)
127 {
128         if (!p)
129                 return 1;
130
131         ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p),
132                                            ps3fb_videomemory.align);
133         return 0;
134 }
135 early_param("ps3fb", early_parse_ps3fb);
136 #else
137 #define prealloc_ps3fb_videomemory()    do { } while (0)
138 #endif
139
140 static int ps3_set_dabr(u64 dabr)
141 {
142         enum {DABR_USER = 1, DABR_KERNEL = 2,};
143
144         return lv1_set_dabr(dabr, DABR_KERNEL | DABR_USER) ? -1 : 0;
145 }
146
147 static void __init ps3_setup_arch(void)
148 {
149         union ps3_firmware_version v;
150
151         DBG(" -> %s:%d\n", __func__, __LINE__);
152
153         ps3_get_firmware_version(&v);
154         printk(KERN_INFO "PS3 firmware version %u.%u.%u\n", v.major, v.minor,
155                 v.rev);
156
157         ps3_spu_set_platform();
158         ps3_map_htab();
159
160 #ifdef CONFIG_SMP
161         smp_init_ps3();
162 #endif
163
164 #ifdef CONFIG_DUMMY_CONSOLE
165         conswitchp = &dummy_con;
166 #endif
167
168         prealloc_ps3fb_videomemory();
169         ppc_md.power_save = ps3_power_save;
170
171         DBG(" <- %s:%d\n", __func__, __LINE__);
172 }
173
174 static void __init ps3_progress(char *s, unsigned short hex)
175 {
176         printk("*** %04x : %s\n", hex, s ? s : "");
177 }
178
179 static int __init ps3_probe(void)
180 {
181         unsigned long htab_size;
182         unsigned long dt_root;
183
184         DBG(" -> %s:%d\n", __func__, __LINE__);
185
186         dt_root = of_get_flat_dt_root();
187         if (!of_flat_dt_is_compatible(dt_root, "PS3"))
188                 return 0;
189
190         powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE;
191
192         ps3_os_area_init();
193         ps3_mm_init();
194         ps3_mm_vas_create(&htab_size);
195         ps3_hpte_init(htab_size);
196
197         DBG(" <- %s:%d\n", __func__, __LINE__);
198         return 1;
199 }
200
201 #if defined(CONFIG_KEXEC)
202 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary)
203 {
204         DBG(" -> %s:%d\n", __func__, __LINE__);
205
206         if (secondary) {
207                 int cpu;
208                 for_each_online_cpu(cpu)
209                         if (cpu)
210                                 ps3_smp_cleanup_cpu(cpu);
211         } else
212                 ps3_smp_cleanup_cpu(0);
213
214         DBG(" <- %s:%d\n", __func__, __LINE__);
215 }
216
217 static void ps3_machine_kexec(struct kimage *image)
218 {
219         unsigned long ppe_id;
220
221         DBG(" -> %s:%d\n", __func__, __LINE__);
222
223         lv1_get_logical_ppe_id(&ppe_id);
224         lv1_configure_irq_state_bitmap(ppe_id, 0, 0);
225         ps3_mm_shutdown();
226         ps3_mm_vas_destroy();
227
228         default_machine_kexec(image);
229
230         DBG(" <- %s:%d\n", __func__, __LINE__);
231 }
232 #endif
233
234 define_machine(ps3) {
235         .name                           = "PS3",
236         .probe                          = ps3_probe,
237         .setup_arch                     = ps3_setup_arch,
238         .init_IRQ                       = ps3_init_IRQ,
239         .panic                          = ps3_panic,
240         .get_boot_time                  = ps3_get_boot_time,
241         .set_rtc_time                   = ps3_set_rtc_time,
242         .get_rtc_time                   = ps3_get_rtc_time,
243         .set_dabr                       = ps3_set_dabr,
244         .calibrate_decr                 = ps3_calibrate_decr,
245         .progress                       = ps3_progress,
246         .restart                        = ps3_restart,
247         .power_off                      = ps3_power_off,
248 #if defined(CONFIG_KEXEC)
249         .kexec_cpu_down                 = ps3_kexec_cpu_down,
250         .machine_kexec                  = ps3_machine_kexec,
251         .machine_kexec_prepare          = default_machine_kexec_prepare,
252         .machine_crash_shutdown         = default_machine_crash_shutdown,
253 #endif
254 };