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/export.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 #include <asm/ps3gpu.h>
37
38 #include "platform.h"
39
40 #if defined(DEBUG)
41 #define DBG udbg_printf
42 #else
43 #define DBG pr_debug
44 #endif
45
46 /* mutex synchronizing GPU accesses and video mode changes */
47 DEFINE_MUTEX(ps3_gpu_mutex);
48 EXPORT_SYMBOL_GPL(ps3_gpu_mutex);
49
50 static union ps3_firmware_version ps3_firmware_version;
51
ps3_get_firmware_version(union ps3_firmware_version * v)52 void ps3_get_firmware_version(union ps3_firmware_version *v)
53 {
54 *v = ps3_firmware_version;
55 }
56 EXPORT_SYMBOL_GPL(ps3_get_firmware_version);
57
ps3_compare_firmware_version(u16 major,u16 minor,u16 rev)58 int ps3_compare_firmware_version(u16 major, u16 minor, u16 rev)
59 {
60 union ps3_firmware_version x;
61
62 x.pad = 0;
63 x.major = major;
64 x.minor = minor;
65 x.rev = rev;
66
67 return (ps3_firmware_version.raw > x.raw) -
68 (ps3_firmware_version.raw < x.raw);
69 }
70 EXPORT_SYMBOL_GPL(ps3_compare_firmware_version);
71
ps3_power_save(void)72 static void ps3_power_save(void)
73 {
74 /*
75 * lv1_pause() puts the PPE thread into inactive state until an
76 * irq on an unmasked plug exists. MSR[EE] has no effect.
77 * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt.
78 */
79
80 lv1_pause(0);
81 }
82
ps3_restart(char * cmd)83 static void __noreturn ps3_restart(char *cmd)
84 {
85 DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd);
86
87 smp_send_stop();
88 ps3_sys_manager_restart(); /* never returns */
89 }
90
ps3_power_off(void)91 static void ps3_power_off(void)
92 {
93 DBG("%s:%d\n", __func__, __LINE__);
94
95 smp_send_stop();
96 ps3_sys_manager_power_off(); /* never returns */
97 }
98
ps3_halt(void)99 static void __noreturn ps3_halt(void)
100 {
101 DBG("%s:%d\n", __func__, __LINE__);
102
103 smp_send_stop();
104 ps3_sys_manager_halt(); /* never returns */
105 }
106
ps3_panic(char * str)107 static void ps3_panic(char *str)
108 {
109 DBG("%s:%d %s\n", __func__, __LINE__, str);
110
111 smp_send_stop();
112 printk("\n");
113 printk(" System does not reboot automatically.\n");
114 printk(" Please press POWER button.\n");
115 printk("\n");
116 panic_flush_kmsg_end();
117
118 while(1)
119 lv1_pause(1);
120 }
121
122 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) || \
123 defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
prealloc(struct ps3_prealloc * p)124 static void __init prealloc(struct ps3_prealloc *p)
125 {
126 if (!p->size)
127 return;
128
129 p->address = memblock_virt_alloc(p->size, p->align);
130
131 printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
132 p->address);
133 }
134 #endif
135
136 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE)
137 struct ps3_prealloc ps3fb_videomemory = {
138 .name = "ps3fb videomemory",
139 .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024,
140 .align = 1024*1024 /* the GPU requires 1 MiB alignment */
141 };
142 EXPORT_SYMBOL_GPL(ps3fb_videomemory);
143 #define prealloc_ps3fb_videomemory() prealloc(&ps3fb_videomemory)
144
early_parse_ps3fb(char * p)145 static int __init early_parse_ps3fb(char *p)
146 {
147 if (!p)
148 return 1;
149
150 ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p),
151 ps3fb_videomemory.align);
152 return 0;
153 }
154 early_param("ps3fb", early_parse_ps3fb);
155 #else
156 #define prealloc_ps3fb_videomemory() do { } while (0)
157 #endif
158
159 #if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
160 struct ps3_prealloc ps3flash_bounce_buffer = {
161 .name = "ps3flash bounce buffer",
162 .size = 256*1024,
163 .align = 256*1024
164 };
165 EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer);
166 #define prealloc_ps3flash_bounce_buffer() prealloc(&ps3flash_bounce_buffer)
167
early_parse_ps3flash(char * p)168 static int __init early_parse_ps3flash(char *p)
169 {
170 if (!p)
171 return 1;
172
173 if (!strcmp(p, "off"))
174 ps3flash_bounce_buffer.size = 0;
175
176 return 0;
177 }
178 early_param("ps3flash", early_parse_ps3flash);
179 #else
180 #define prealloc_ps3flash_bounce_buffer() do { } while (0)
181 #endif
182
ps3_set_dabr(unsigned long dabr,unsigned long dabrx)183 static int ps3_set_dabr(unsigned long dabr, unsigned long dabrx)
184 {
185 /* Have to set at least one bit in the DABRX */
186 if (dabrx == 0 && dabr == 0)
187 dabrx = DABRX_USER;
188 /* hypervisor only allows us to set BTI, Kernel and user */
189 dabrx &= DABRX_BTI | DABRX_KERNEL | DABRX_USER;
190
191 return lv1_set_dabr(dabr, dabrx) ? -1 : 0;
192 }
193
ps3_setup_arch(void)194 static void __init ps3_setup_arch(void)
195 {
196 u64 tmp;
197
198 DBG(" -> %s:%d\n", __func__, __LINE__);
199
200 lv1_get_version_info(&ps3_firmware_version.raw, &tmp);
201
202 printk(KERN_INFO "PS3 firmware version %u.%u.%u\n",
203 ps3_firmware_version.major, ps3_firmware_version.minor,
204 ps3_firmware_version.rev);
205
206 ps3_spu_set_platform();
207
208 #ifdef CONFIG_SMP
209 smp_init_ps3();
210 #endif
211
212 #ifdef CONFIG_DUMMY_CONSOLE
213 conswitchp = &dummy_con;
214 #endif
215
216 prealloc_ps3fb_videomemory();
217 prealloc_ps3flash_bounce_buffer();
218
219 ppc_md.power_save = ps3_power_save;
220 ps3_os_area_init();
221
222 DBG(" <- %s:%d\n", __func__, __LINE__);
223 }
224
ps3_progress(char * s,unsigned short hex)225 static void __init ps3_progress(char *s, unsigned short hex)
226 {
227 printk("*** %04x : %s\n", hex, s ? s : "");
228 }
229
ps3_early_mm_init(void)230 void __init ps3_early_mm_init(void)
231 {
232 unsigned long htab_size;
233
234 ps3_mm_init();
235 ps3_mm_vas_create(&htab_size);
236 ps3_hpte_init(htab_size);
237 }
238
ps3_probe(void)239 static int __init ps3_probe(void)
240 {
241 DBG(" -> %s:%d\n", __func__, __LINE__);
242
243 if (!of_machine_is_compatible("sony,ps3"))
244 return 0;
245
246 ps3_os_area_save_params();
247
248 pm_power_off = ps3_power_off;
249
250 DBG(" <- %s:%d\n", __func__, __LINE__);
251 return 1;
252 }
253
254 #if defined(CONFIG_KEXEC_CORE)
ps3_kexec_cpu_down(int crash_shutdown,int secondary)255 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary)
256 {
257 int cpu = smp_processor_id();
258
259 DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu);
260
261 ps3_smp_cleanup_cpu(cpu);
262 ps3_shutdown_IRQ(cpu);
263
264 DBG(" <- %s:%d\n", __func__, __LINE__);
265 }
266 #endif
267
define_machine(ps3)268 define_machine(ps3) {
269 .name = "PS3",
270 .probe = ps3_probe,
271 .setup_arch = ps3_setup_arch,
272 .init_IRQ = ps3_init_IRQ,
273 .panic = ps3_panic,
274 .get_boot_time = ps3_get_boot_time,
275 .set_dabr = ps3_set_dabr,
276 .calibrate_decr = ps3_calibrate_decr,
277 .progress = ps3_progress,
278 .restart = ps3_restart,
279 .halt = ps3_halt,
280 #if defined(CONFIG_KEXEC_CORE)
281 .kexec_cpu_down = ps3_kexec_cpu_down,
282 #endif
283 };
284
