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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/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 */
47DEFINE_MUTEX(ps3_gpu_mutex);
48EXPORT_SYMBOL_GPL(ps3_gpu_mutex);
49
50static union ps3_firmware_version ps3_firmware_version;
51
52void ps3_get_firmware_version(union ps3_firmware_version *v)
53{
54 *v = ps3_firmware_version;
55}
56EXPORT_SYMBOL_GPL(ps3_get_firmware_version);
57
58int 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}
70EXPORT_SYMBOL_GPL(ps3_compare_firmware_version);
71
72static 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
83static void 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
91static 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
99static void 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
107static 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
117 while(1)
118 lv1_pause(1);
119}
120
121#if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) || \
122 defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
123static void __init prealloc(struct ps3_prealloc *p)
124{
125 if (!p->size)
126 return;
127
128 p->address = __alloc_bootmem(p->size, p->align, __pa(MAX_DMA_ADDRESS));
129 if (!p->address) {
130 printk(KERN_ERR "%s: Cannot allocate %s\n", __func__,
131 p->name);
132 return;
133 }
134
135 printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
136 p->address);
137}
138#endif
139
140#if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE)
141struct ps3_prealloc ps3fb_videomemory = {
142 .name = "ps3fb videomemory",
143 .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024,
144 .align = 1024*1024 /* the GPU requires 1 MiB alignment */
145};
146EXPORT_SYMBOL_GPL(ps3fb_videomemory);
147#define prealloc_ps3fb_videomemory() prealloc(&ps3fb_videomemory)
148
149static int __init early_parse_ps3fb(char *p)
150{
151 if (!p)
152 return 1;
153
154 ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p),
155 ps3fb_videomemory.align);
156 return 0;
157}
158early_param("ps3fb", early_parse_ps3fb);
159#else
160#define prealloc_ps3fb_videomemory() do { } while (0)
161#endif
162
163#if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
164struct ps3_prealloc ps3flash_bounce_buffer = {
165 .name = "ps3flash bounce buffer",
166 .size = 256*1024,
167 .align = 256*1024
168};
169EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer);
170#define prealloc_ps3flash_bounce_buffer() prealloc(&ps3flash_bounce_buffer)
171
172static int __init early_parse_ps3flash(char *p)
173{
174 if (!p)
175 return 1;
176
177 if (!strcmp(p, "off"))
178 ps3flash_bounce_buffer.size = 0;
179
180 return 0;
181}
182early_param("ps3flash", early_parse_ps3flash);
183#else
184#define prealloc_ps3flash_bounce_buffer() do { } while (0)
185#endif
186
187static int ps3_set_dabr(unsigned long dabr)
188{
189 enum {DABR_USER = 1, DABR_KERNEL = 2,};
190
191 return lv1_set_dabr(dabr, DABR_KERNEL | DABR_USER) ? -1 : 0;
192}
193
194static 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
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_dabr = ps3_set_dabr,
274 .calibrate_decr = ps3_calibrate_decr,
275 .progress = ps3_progress,
276 .restart = ps3_restart,
277 .power_off = ps3_power_off,
278 .halt = ps3_halt,
279#if defined(CONFIG_KEXEC)
280 .kexec_cpu_down = ps3_kexec_cpu_down,
281#endif
282};