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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
36#include "platform.h"
37
38#if defined(DEBUG)
39#define DBG udbg_printf
40#else
41#define DBG pr_debug
42#endif
43
44/* mutex synchronizing GPU accesses and video mode changes */
45DEFINE_MUTEX(ps3_gpu_mutex);
46EXPORT_SYMBOL_GPL(ps3_gpu_mutex);
47
48#if !defined(CONFIG_SMP)
49static void smp_send_stop(void) {}
50#endif
51
52static union ps3_firmware_version ps3_firmware_version;
53
54void ps3_get_firmware_version(union ps3_firmware_version *v)
55{
56 *v = ps3_firmware_version;
57}
58EXPORT_SYMBOL_GPL(ps3_get_firmware_version);
59
60int ps3_compare_firmware_version(u16 major, u16 minor, u16 rev)
61{
62 union ps3_firmware_version x;
63
64 x.pad = 0;
65 x.major = major;
66 x.minor = minor;
67 x.rev = rev;
68
69 return (ps3_firmware_version.raw > x.raw) -
70 (ps3_firmware_version.raw < x.raw);
71}
72EXPORT_SYMBOL_GPL(ps3_compare_firmware_version);
73
74static void ps3_power_save(void)
75{
76 /*
77 * lv1_pause() puts the PPE thread into inactive state until an
78 * irq on an unmasked plug exists. MSR[EE] has no effect.
79 * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt.
80 */
81
82 lv1_pause(0);
83}
84
85static void ps3_restart(char *cmd)
86{
87 DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd);
88
89 smp_send_stop();
90 ps3_sys_manager_restart(); /* never returns */
91}
92
93static void ps3_power_off(void)
94{
95 DBG("%s:%d\n", __func__, __LINE__);
96
97 smp_send_stop();
98 ps3_sys_manager_power_off(); /* never returns */
99}
100
101static void ps3_halt(void)
102{
103 DBG("%s:%d\n", __func__, __LINE__);
104
105 smp_send_stop();
106 ps3_sys_manager_halt(); /* never returns */
107}
108
109static void ps3_panic(char *str)
110{
111 DBG("%s:%d %s\n", __func__, __LINE__, str);
112
113 smp_send_stop();
114 printk("\n");
115 printk(" System does not reboot automatically.\n");
116 printk(" Please press POWER button.\n");
117 printk("\n");
118
119 while(1)
120 lv1_pause(1);
121}
122
123#if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) || \
124 defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
125static void __init prealloc(struct ps3_prealloc *p)
126{
127 if (!p->size)
128 return;
129
130 p->address = __alloc_bootmem(p->size, p->align, __pa(MAX_DMA_ADDRESS));
131 if (!p->address) {
132 printk(KERN_ERR "%s: Cannot allocate %s\n", __func__,
133 p->name);
134 return;
135 }
136
137 printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
138 p->address);
139}
140#endif
141
142#if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE)
143struct ps3_prealloc ps3fb_videomemory = {
144 .name = "ps3fb videomemory",
145 .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024,
146 .align = 1024*1024 /* the GPU requires 1 MiB alignment */
147};
148EXPORT_SYMBOL_GPL(ps3fb_videomemory);
149#define prealloc_ps3fb_videomemory() prealloc(&ps3fb_videomemory)
150
151static int __init early_parse_ps3fb(char *p)
152{
153 if (!p)
154 return 1;
155
156 ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p),
157 ps3fb_videomemory.align);
158 return 0;
159}
160early_param("ps3fb", early_parse_ps3fb);
161#else
162#define prealloc_ps3fb_videomemory() do { } while (0)
163#endif
164
165#if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
166struct ps3_prealloc ps3flash_bounce_buffer = {
167 .name = "ps3flash bounce buffer",
168 .size = 256*1024,
169 .align = 256*1024
170};
171EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer);
172#define prealloc_ps3flash_bounce_buffer() prealloc(&ps3flash_bounce_buffer)
173
174static int __init early_parse_ps3flash(char *p)
175{
176 if (!p)
177 return 1;
178
179 if (!strcmp(p, "off"))
180 ps3flash_bounce_buffer.size = 0;
181
182 return 0;
183}
184early_param("ps3flash", early_parse_ps3flash);
185#else
186#define prealloc_ps3flash_bounce_buffer() do { } while (0)
187#endif
188
189static int ps3_set_dabr(unsigned long dabr)
190{
191 enum {DABR_USER = 1, DABR_KERNEL = 2,};
192
193 return lv1_set_dabr(dabr, DABR_KERNEL | DABR_USER) ? -1 : 0;
194}
195
196static void __init ps3_setup_arch(void)
197{
198
199 DBG(" -> %s:%d\n", __func__, __LINE__);
200
201 lv1_get_version_info(&ps3_firmware_version.raw);
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
225static void __init ps3_progress(char *s, unsigned short hex)
226{
227 printk("*** %04x : %s\n", hex, s ? s : "");
228}
229
230static int __init ps3_probe(void)
231{
232 unsigned long htab_size;
233 unsigned long dt_root;
234
235 DBG(" -> %s:%d\n", __func__, __LINE__);
236
237 dt_root = of_get_flat_dt_root();
238 if (!of_flat_dt_is_compatible(dt_root, "sony,ps3"))
239 return 0;
240
241 powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE;
242
243 ps3_os_area_save_params();
244 ps3_mm_init();
245 ps3_mm_vas_create(&htab_size);
246 ps3_hpte_init(htab_size);
247
248 DBG(" <- %s:%d\n", __func__, __LINE__);
249 return 1;
250}
251
252#if defined(CONFIG_KEXEC)
253static void ps3_kexec_cpu_down(int crash_shutdown, int secondary)
254{
255 int cpu = smp_processor_id();
256
257 DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu);
258
259 ps3_smp_cleanup_cpu(cpu);
260 ps3_shutdown_IRQ(cpu);
261
262 DBG(" <- %s:%d\n", __func__, __LINE__);
263}
264#endif
265
266define_machine(ps3) {
267 .name = "PS3",
268 .probe = ps3_probe,
269 .setup_arch = ps3_setup_arch,
270 .init_IRQ = ps3_init_IRQ,
271 .panic = ps3_panic,
272 .get_boot_time = ps3_get_boot_time,
273 .set_rtc_time = ps3_set_rtc_time,
274 .get_rtc_time = ps3_get_rtc_time,
275 .set_dabr = ps3_set_dabr,
276 .calibrate_decr = ps3_calibrate_decr,
277 .progress = ps3_progress,
278 .restart = ps3_restart,
279 .power_off = ps3_power_off,
280 .halt = ps3_halt,
281#if defined(CONFIG_KEXEC)
282 .kexec_cpu_down = ps3_kexec_cpu_down,
283#endif
284};