Linux kernel mirror (for testing)
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linux
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 */
46DEFINE_MUTEX(ps3_gpu_mutex);
47EXPORT_SYMBOL_GPL(ps3_gpu_mutex);
48
49static union ps3_firmware_version ps3_firmware_version;
50
51void ps3_get_firmware_version(union ps3_firmware_version *v)
52{
53 *v = ps3_firmware_version;
54}
55EXPORT_SYMBOL_GPL(ps3_get_firmware_version);
56
57int 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}
69EXPORT_SYMBOL_GPL(ps3_compare_firmware_version);
70
71static 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
82static 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
90static 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
98static 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
106static 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)
122static 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)
140struct 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};
145EXPORT_SYMBOL_GPL(ps3fb_videomemory);
146#define prealloc_ps3fb_videomemory() prealloc(&ps3fb_videomemory)
147
148static 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}
157early_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)
163struct ps3_prealloc ps3flash_bounce_buffer = {
164 .name = "ps3flash bounce buffer",
165 .size = 256*1024,
166 .align = 256*1024
167};
168EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer);
169#define prealloc_ps3flash_bounce_buffer() prealloc(&ps3flash_bounce_buffer)
170
171static 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}
181early_param("ps3flash", early_parse_ps3flash);
182#else
183#define prealloc_ps3flash_bounce_buffer() do { } while (0)
184#endif
185
186static 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
193static 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
222static void __init ps3_progress(char *s, unsigned short hex)
223{
224 printk("*** %04x : %s\n", hex, s ? s : "");
225}
226
227static 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)
250static 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
263define_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};