sh: romImage support V2
[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/bootmem.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 #include <asm/ps3gpu.h>
36
37 #include "platform.h"
38
39 #if defined(DEBUG)
40 #define DBG udbg_printf
41 #else
42 #define DBG pr_debug
43 #endif
44
45 /* mutex synchronizing GPU accesses and video mode changes */
46 DEFINE_MUTEX(ps3_gpu_mutex);
47 EXPORT_SYMBOL_GPL(ps3_gpu_mutex);
48
49 static union ps3_firmware_version ps3_firmware_version;
50
51 void ps3_get_firmware_version(union ps3_firmware_version *v)
52 {
53         *v = ps3_firmware_version;
54 }
55 EXPORT_SYMBOL_GPL(ps3_get_firmware_version);
56
57 int ps3_compare_firmware_version(u16 major, u16 minor, u16 rev)
58 {
59         union ps3_firmware_version x;
60
61         x.pad = 0;
62         x.major = major;
63         x.minor = minor;
64         x.rev = rev;
65
66         return (ps3_firmware_version.raw > x.raw) -
67                (ps3_firmware_version.raw < x.raw);
68 }
69 EXPORT_SYMBOL_GPL(ps3_compare_firmware_version);
70
71 static void ps3_power_save(void)
72 {
73         /*
74          * lv1_pause() puts the PPE thread into inactive state until an
75          * irq on an unmasked plug exists. MSR[EE] has no effect.
76          * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt.
77          */
78
79         lv1_pause(0);
80 }
81
82 static void ps3_restart(char *cmd)
83 {
84         DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd);
85
86         smp_send_stop();
87         ps3_sys_manager_restart(); /* never returns */
88 }
89
90 static void ps3_power_off(void)
91 {
92         DBG("%s:%d\n", __func__, __LINE__);
93
94         smp_send_stop();
95         ps3_sys_manager_power_off(); /* never returns */
96 }
97
98 static void ps3_halt(void)
99 {
100         DBG("%s:%d\n", __func__, __LINE__);
101
102         smp_send_stop();
103         ps3_sys_manager_halt(); /* never returns */
104 }
105
106 static void ps3_panic(char *str)
107 {
108         DBG("%s:%d %s\n", __func__, __LINE__, str);
109
110         smp_send_stop();
111         printk("\n");
112         printk("   System does not reboot automatically.\n");
113         printk("   Please press POWER button.\n");
114         printk("\n");
115
116         while(1)
117                 lv1_pause(1);
118 }
119
120 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) || \
121     defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
122 static void __init prealloc(struct ps3_prealloc *p)
123 {
124         if (!p->size)
125                 return;
126
127         p->address = __alloc_bootmem(p->size, p->align, __pa(MAX_DMA_ADDRESS));
128         if (!p->address) {
129                 printk(KERN_ERR "%s: Cannot allocate %s\n", __func__,
130                        p->name);
131                 return;
132         }
133
134         printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
135                p->address);
136 }
137 #endif
138
139 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE)
140 struct ps3_prealloc ps3fb_videomemory = {
141         .name = "ps3fb videomemory",
142         .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024,
143         .align = 1024*1024              /* the GPU requires 1 MiB alignment */
144 };
145 EXPORT_SYMBOL_GPL(ps3fb_videomemory);
146 #define prealloc_ps3fb_videomemory()    prealloc(&ps3fb_videomemory)
147
148 static int __init early_parse_ps3fb(char *p)
149 {
150         if (!p)
151                 return 1;
152
153         ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p),
154                                            ps3fb_videomemory.align);
155         return 0;
156 }
157 early_param("ps3fb", early_parse_ps3fb);
158 #else
159 #define prealloc_ps3fb_videomemory()    do { } while (0)
160 #endif
161
162 #if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
163 struct ps3_prealloc ps3flash_bounce_buffer = {
164         .name = "ps3flash bounce buffer",
165         .size = 256*1024,
166         .align = 256*1024
167 };
168 EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer);
169 #define prealloc_ps3flash_bounce_buffer()       prealloc(&ps3flash_bounce_buffer)
170
171 static int __init early_parse_ps3flash(char *p)
172 {
173         if (!p)
174                 return 1;
175
176         if (!strcmp(p, "off"))
177                 ps3flash_bounce_buffer.size = 0;
178
179         return 0;
180 }
181 early_param("ps3flash", early_parse_ps3flash);
182 #else
183 #define prealloc_ps3flash_bounce_buffer()       do { } while (0)
184 #endif
185
186 static int ps3_set_dabr(unsigned long dabr)
187 {
188         enum {DABR_USER = 1, DABR_KERNEL = 2,};
189
190         return lv1_set_dabr(dabr, DABR_KERNEL | DABR_USER) ? -1 : 0;
191 }
192
193 static void __init ps3_setup_arch(void)
194 {
195
196         DBG(" -> %s:%d\n", __func__, __LINE__);
197
198         lv1_get_version_info(&ps3_firmware_version.raw);
199         printk(KERN_INFO "PS3 firmware version %u.%u.%u\n",
200                ps3_firmware_version.major, ps3_firmware_version.minor,
201                ps3_firmware_version.rev);
202
203         ps3_spu_set_platform();
204
205 #ifdef CONFIG_SMP
206         smp_init_ps3();
207 #endif
208
209 #ifdef CONFIG_DUMMY_CONSOLE
210         conswitchp = &dummy_con;
211 #endif
212
213         prealloc_ps3fb_videomemory();
214         prealloc_ps3flash_bounce_buffer();
215
216         ppc_md.power_save = ps3_power_save;
217         ps3_os_area_init();
218
219         DBG(" <- %s:%d\n", __func__, __LINE__);
220 }
221
222 static void __init ps3_progress(char *s, unsigned short hex)
223 {
224         printk("*** %04x : %s\n", hex, s ? s : "");
225 }
226
227 static int __init ps3_probe(void)
228 {
229         unsigned long htab_size;
230         unsigned long dt_root;
231
232         DBG(" -> %s:%d\n", __func__, __LINE__);
233
234         dt_root = of_get_flat_dt_root();
235         if (!of_flat_dt_is_compatible(dt_root, "sony,ps3"))
236                 return 0;
237
238         powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE;
239
240         ps3_os_area_save_params();
241         ps3_mm_init();
242         ps3_mm_vas_create(&htab_size);
243         ps3_hpte_init(htab_size);
244
245         DBG(" <- %s:%d\n", __func__, __LINE__);
246         return 1;
247 }
248
249 #if defined(CONFIG_KEXEC)
250 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary)
251 {
252         int cpu = smp_processor_id();
253
254         DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu);
255
256         ps3_smp_cleanup_cpu(cpu);
257         ps3_shutdown_IRQ(cpu);
258
259         DBG(" <- %s:%d\n", __func__, __LINE__);
260 }
261 #endif
262
263 define_machine(ps3) {
264         .name                           = "PS3",
265         .probe                          = ps3_probe,
266         .setup_arch                     = ps3_setup_arch,
267         .init_IRQ                       = ps3_init_IRQ,
268         .panic                          = ps3_panic,
269         .get_boot_time                  = ps3_get_boot_time,
270         .set_dabr                       = ps3_set_dabr,
271         .calibrate_decr                 = ps3_calibrate_decr,
272         .progress                       = ps3_progress,
273         .restart                        = ps3_restart,
274         .power_off                      = ps3_power_off,
275         .halt                           = ps3_halt,
276 #if defined(CONFIG_KEXEC)
277         .kexec_cpu_down                 = ps3_kexec_cpu_down,
278 #endif
279 };