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21#include <linux/kernel.h>
22#include <linux/io.h>
23#include <linux/workqueue.h>
24#include <linux/fs.h>
25#include <linux/syscalls.h>
26#include <linux/ctype.h>
27#include <linux/lmb.h>
28#include <linux/of.h>
29
30#include <asm/prom.h>
31
32#include "platform.h"
33
34enum {
35 OS_AREA_SEGMENT_SIZE = 0X200,
36};
37
38enum os_area_ldr_format {
39 HEADER_LDR_FORMAT_RAW = 0,
40 HEADER_LDR_FORMAT_GZIP = 1,
41};
42
43#define OS_AREA_HEADER_MAGIC_NUM "cell_ext_os_area"
44
45
46
47
48
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57
58
59
60struct os_area_header {
61 u8 magic_num[16];
62 u32 hdr_version;
63 u32 db_area_offset;
64 u32 ldr_area_offset;
65 u32 _reserved_1;
66 u32 ldr_format;
67 u32 ldr_size;
68 u32 _reserved_2[6];
69};
70
71enum os_area_boot_flag {
72 PARAM_BOOT_FLAG_GAME_OS = 0,
73 PARAM_BOOT_FLAG_OTHER_OS = 1,
74};
75
76enum os_area_ctrl_button {
77 PARAM_CTRL_BUTTON_O_IS_YES = 0,
78 PARAM_CTRL_BUTTON_X_IS_YES = 1,
79};
80
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100
101struct os_area_params {
102 u32 boot_flag;
103 u32 _reserved_1[3];
104 u32 num_params;
105 u32 _reserved_2[3];
106
107 s64 rtc_diff;
108 u8 av_multi_out;
109 u8 ctrl_button;
110 u8 _reserved_3[6];
111
112 u8 static_ip_addr[4];
113 u8 network_mask[4];
114 u8 default_gateway[4];
115 u8 _reserved_4[4];
116
117 u8 dns_primary[4];
118 u8 dns_secondary[4];
119 u8 _reserved_5[8];
120};
121
122#define OS_AREA_DB_MAGIC_NUM "-db-"
123
124
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139
140struct os_area_db {
141 u8 magic_num[4];
142 u16 version;
143 u16 _reserved_1;
144 u16 index_64;
145 u16 count_64;
146 u16 index_32;
147 u16 count_32;
148 u16 index_16;
149 u16 count_16;
150 u32 _reserved_2;
151 u8 _db_data[1000];
152};
153
154
155
156
157
158enum os_area_db_owner {
159 OS_AREA_DB_OWNER_ANY = -1,
160 OS_AREA_DB_OWNER_NONE = 0,
161 OS_AREA_DB_OWNER_PROTOTYPE = 1,
162 OS_AREA_DB_OWNER_LINUX = 2,
163 OS_AREA_DB_OWNER_PETITBOOT = 3,
164 OS_AREA_DB_OWNER_MAX = 32,
165};
166
167enum os_area_db_key {
168 OS_AREA_DB_KEY_ANY = -1,
169 OS_AREA_DB_KEY_NONE = 0,
170 OS_AREA_DB_KEY_RTC_DIFF = 1,
171 OS_AREA_DB_KEY_VIDEO_MODE = 2,
172 OS_AREA_DB_KEY_MAX = 8,
173};
174
175struct os_area_db_id {
176 int owner;
177 int key;
178};
179
180static const struct os_area_db_id os_area_db_id_empty = {
181 .owner = OS_AREA_DB_OWNER_NONE,
182 .key = OS_AREA_DB_KEY_NONE
183};
184
185static const struct os_area_db_id os_area_db_id_any = {
186 .owner = OS_AREA_DB_OWNER_ANY,
187 .key = OS_AREA_DB_KEY_ANY
188};
189
190static const struct os_area_db_id os_area_db_id_rtc_diff = {
191 .owner = OS_AREA_DB_OWNER_LINUX,
192 .key = OS_AREA_DB_KEY_RTC_DIFF
193};
194
195static const struct os_area_db_id os_area_db_id_video_mode = {
196 .owner = OS_AREA_DB_OWNER_LINUX,
197 .key = OS_AREA_DB_KEY_VIDEO_MODE
198};
199
200#define SECONDS_FROM_1970_TO_2000 946684800LL
201
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209
210
211struct saved_params {
212 unsigned int valid;
213 s64 rtc_diff;
214 unsigned int av_multi_out;
215} static saved_params;
216
217static struct property property_rtc_diff = {
218 .name = "linux,rtc_diff",
219 .length = sizeof(saved_params.rtc_diff),
220 .value = &saved_params.rtc_diff,
221};
222
223static struct property property_av_multi_out = {
224 .name = "linux,av_multi_out",
225 .length = sizeof(saved_params.av_multi_out),
226 .value = &saved_params.av_multi_out,
227};
228
229
230static DEFINE_MUTEX(os_area_flash_mutex);
231
232static const struct ps3_os_area_flash_ops *os_area_flash_ops;
233
234void ps3_os_area_flash_register(const struct ps3_os_area_flash_ops *ops)
235{
236 mutex_lock(&os_area_flash_mutex);
237 os_area_flash_ops = ops;
238 mutex_unlock(&os_area_flash_mutex);
239}
240EXPORT_SYMBOL_GPL(ps3_os_area_flash_register);
241
242static ssize_t os_area_flash_read(void *buf, size_t count, loff_t pos)
243{
244 ssize_t res = -ENODEV;
245
246 mutex_lock(&os_area_flash_mutex);
247 if (os_area_flash_ops)
248 res = os_area_flash_ops->read(buf, count, pos);
249 mutex_unlock(&os_area_flash_mutex);
250
251 return res;
252}
253
254static ssize_t os_area_flash_write(const void *buf, size_t count, loff_t pos)
255{
256 ssize_t res = -ENODEV;
257
258 mutex_lock(&os_area_flash_mutex);
259 if (os_area_flash_ops)
260 res = os_area_flash_ops->write(buf, count, pos);
261 mutex_unlock(&os_area_flash_mutex);
262
263 return res;
264}
265
266
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268
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270
271
272
273static void os_area_set_property(struct device_node *node,
274 struct property *prop)
275{
276 int result;
277 struct property *tmp = of_find_property(node, prop->name, NULL);
278
279 if (tmp) {
280 pr_debug("%s:%d found %s\n", __func__, __LINE__, prop->name);
281 prom_remove_property(node, tmp);
282 }
283
284 result = prom_add_property(node, prop);
285
286 if (result)
287 pr_debug("%s:%d prom_set_property failed\n", __func__,
288 __LINE__);
289}
290
291
292
293
294
295
296static void __init os_area_get_property(struct device_node *node,
297 struct property *prop)
298{
299 const struct property *tmp = of_find_property(node, prop->name, NULL);
300
301 if (tmp) {
302 BUG_ON(prop->length != tmp->length);
303 memcpy(prop->value, tmp->value, prop->length);
304 } else
305 pr_debug("%s:%d not found %s\n", __func__, __LINE__,
306 prop->name);
307}
308
309static void dump_field(char *s, const u8 *field, int size_of_field)
310{
311#if defined(DEBUG)
312 int i;
313
314 for (i = 0; i < size_of_field; i++)
315 s[i] = isprint(field[i]) ? field[i] : '.';
316 s[i] = 0;
317#endif
318}
319
320#define dump_header(_a) _dump_header(_a, __func__, __LINE__)
321static void _dump_header(const struct os_area_header *h, const char *func,
322 int line)
323{
324 char str[sizeof(h->magic_num) + 1];
325
326 dump_field(str, h->magic_num, sizeof(h->magic_num));
327 pr_debug("%s:%d: h.magic_num: '%s'\n", func, line,
328 str);
329 pr_debug("%s:%d: h.hdr_version: %u\n", func, line,
330 h->hdr_version);
331 pr_debug("%s:%d: h.db_area_offset: %u\n", func, line,
332 h->db_area_offset);
333 pr_debug("%s:%d: h.ldr_area_offset: %u\n", func, line,
334 h->ldr_area_offset);
335 pr_debug("%s:%d: h.ldr_format: %u\n", func, line,
336 h->ldr_format);
337 pr_debug("%s:%d: h.ldr_size: %xh\n", func, line,
338 h->ldr_size);
339}
340
341#define dump_params(_a) _dump_params(_a, __func__, __LINE__)
342static void _dump_params(const struct os_area_params *p, const char *func,
343 int line)
344{
345 pr_debug("%s:%d: p.boot_flag: %u\n", func, line, p->boot_flag);
346 pr_debug("%s:%d: p.num_params: %u\n", func, line, p->num_params);
347 pr_debug("%s:%d: p.rtc_diff %lld\n", func, line, p->rtc_diff);
348 pr_debug("%s:%d: p.av_multi_out %u\n", func, line, p->av_multi_out);
349 pr_debug("%s:%d: p.ctrl_button: %u\n", func, line, p->ctrl_button);
350 pr_debug("%s:%d: p.static_ip_addr: %u.%u.%u.%u\n", func, line,
351 p->static_ip_addr[0], p->static_ip_addr[1],
352 p->static_ip_addr[2], p->static_ip_addr[3]);
353 pr_debug("%s:%d: p.network_mask: %u.%u.%u.%u\n", func, line,
354 p->network_mask[0], p->network_mask[1],
355 p->network_mask[2], p->network_mask[3]);
356 pr_debug("%s:%d: p.default_gateway: %u.%u.%u.%u\n", func, line,
357 p->default_gateway[0], p->default_gateway[1],
358 p->default_gateway[2], p->default_gateway[3]);
359 pr_debug("%s:%d: p.dns_primary: %u.%u.%u.%u\n", func, line,
360 p->dns_primary[0], p->dns_primary[1],
361 p->dns_primary[2], p->dns_primary[3]);
362 pr_debug("%s:%d: p.dns_secondary: %u.%u.%u.%u\n", func, line,
363 p->dns_secondary[0], p->dns_secondary[1],
364 p->dns_secondary[2], p->dns_secondary[3]);
365}
366
367static int verify_header(const struct os_area_header *header)
368{
369 if (memcmp(header->magic_num, OS_AREA_HEADER_MAGIC_NUM,
370 sizeof(header->magic_num))) {
371 pr_debug("%s:%d magic_num failed\n", __func__, __LINE__);
372 return -1;
373 }
374
375 if (header->hdr_version < 1) {
376 pr_debug("%s:%d hdr_version failed\n", __func__, __LINE__);
377 return -1;
378 }
379
380 if (header->db_area_offset > header->ldr_area_offset) {
381 pr_debug("%s:%d offsets failed\n", __func__, __LINE__);
382 return -1;
383 }
384
385 return 0;
386}
387
388static int db_verify(const struct os_area_db *db)
389{
390 if (memcmp(db->magic_num, OS_AREA_DB_MAGIC_NUM,
391 sizeof(db->magic_num))) {
392 pr_debug("%s:%d magic_num failed\n", __func__, __LINE__);
393 return -EINVAL;
394 }
395
396 if (db->version != 1) {
397 pr_debug("%s:%d version failed\n", __func__, __LINE__);
398 return -EINVAL;
399 }
400
401 return 0;
402}
403
404struct db_index {
405 uint8_t owner:5;
406 uint8_t key:3;
407};
408
409struct db_iterator {
410 const struct os_area_db *db;
411 struct os_area_db_id match_id;
412 struct db_index *idx;
413 struct db_index *last_idx;
414 union {
415 uint64_t *value_64;
416 uint32_t *value_32;
417 uint16_t *value_16;
418 };
419};
420
421static unsigned int db_align_up(unsigned int val, unsigned int size)
422{
423 return (val + (size - 1)) & (~(size - 1));
424}
425
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428
429
430
431
432
433static int db_for_each_64(const struct os_area_db *db,
434 const struct os_area_db_id *match_id, struct db_iterator *i)
435{
436next:
437 if (!i->db) {
438 i->db = db;
439 i->match_id = match_id ? *match_id : os_area_db_id_any;
440 i->idx = (void *)db + db->index_64;
441 i->last_idx = i->idx + db->count_64;
442 i->value_64 = (void *)db + db->index_64
443 + db_align_up(db->count_64, 8);
444 } else {
445 i->idx++;
446 i->value_64++;
447 }
448
449 if (i->idx >= i->last_idx) {
450 pr_debug("%s:%d: reached end\n", __func__, __LINE__);
451 return 0;
452 }
453
454 if (i->match_id.owner != OS_AREA_DB_OWNER_ANY
455 && i->match_id.owner != (int)i->idx->owner)
456 goto next;
457 if (i->match_id.key != OS_AREA_DB_KEY_ANY
458 && i->match_id.key != (int)i->idx->key)
459 goto next;
460
461 return 1;
462}
463
464static int db_delete_64(struct os_area_db *db, const struct os_area_db_id *id)
465{
466 struct db_iterator i;
467
468 for (i.db = NULL; db_for_each_64(db, id, &i); ) {
469
470 pr_debug("%s:%d: got (%d:%d) %llxh\n", __func__, __LINE__,
471 i.idx->owner, i.idx->key,
472 (unsigned long long)*i.value_64);
473
474 i.idx->owner = 0;
475 i.idx->key = 0;
476 *i.value_64 = 0;
477 }
478 return 0;
479}
480
481static int db_set_64(struct os_area_db *db, const struct os_area_db_id *id,
482 uint64_t value)
483{
484 struct db_iterator i;
485
486 pr_debug("%s:%d: (%d:%d) <= %llxh\n", __func__, __LINE__,
487 id->owner, id->key, (unsigned long long)value);
488
489 if (!id->owner || id->owner == OS_AREA_DB_OWNER_ANY
490 || id->key == OS_AREA_DB_KEY_ANY) {
491 pr_debug("%s:%d: bad id: (%d:%d)\n", __func__,
492 __LINE__, id->owner, id->key);
493 return -1;
494 }
495
496 db_delete_64(db, id);
497
498 i.db = NULL;
499 if (db_for_each_64(db, &os_area_db_id_empty, &i)) {
500
501 pr_debug("%s:%d: got (%d:%d) %llxh\n", __func__, __LINE__,
502 i.idx->owner, i.idx->key,
503 (unsigned long long)*i.value_64);
504
505 i.idx->owner = id->owner;
506 i.idx->key = id->key;
507 *i.value_64 = value;
508
509 pr_debug("%s:%d: set (%d:%d) <= %llxh\n", __func__, __LINE__,
510 i.idx->owner, i.idx->key,
511 (unsigned long long)*i.value_64);
512 return 0;
513 }
514 pr_debug("%s:%d: database full.\n",
515 __func__, __LINE__);
516 return -1;
517}
518
519static int db_get_64(const struct os_area_db *db,
520 const struct os_area_db_id *id, uint64_t *value)
521{
522 struct db_iterator i;
523
524 i.db = NULL;
525 if (db_for_each_64(db, id, &i)) {
526 *value = *i.value_64;
527 pr_debug("%s:%d: found %lld\n", __func__, __LINE__,
528 (long long int)*i.value_64);
529 return 0;
530 }
531 pr_debug("%s:%d: not found\n", __func__, __LINE__);
532 return -1;
533}
534
535static int db_get_rtc_diff(const struct os_area_db *db, int64_t *rtc_diff)
536{
537 return db_get_64(db, &os_area_db_id_rtc_diff, (uint64_t*)rtc_diff);
538}
539
540#define dump_db(a) _dump_db(a, __func__, __LINE__)
541static void _dump_db(const struct os_area_db *db, const char *func,
542 int line)
543{
544 char str[sizeof(db->magic_num) + 1];
545
546 dump_field(str, db->magic_num, sizeof(db->magic_num));
547 pr_debug("%s:%d: db.magic_num: '%s'\n", func, line,
548 str);
549 pr_debug("%s:%d: db.version: %u\n", func, line,
550 db->version);
551 pr_debug("%s:%d: db.index_64: %u\n", func, line,
552 db->index_64);
553 pr_debug("%s:%d: db.count_64: %u\n", func, line,
554 db->count_64);
555 pr_debug("%s:%d: db.index_32: %u\n", func, line,
556 db->index_32);
557 pr_debug("%s:%d: db.count_32: %u\n", func, line,
558 db->count_32);
559 pr_debug("%s:%d: db.index_16: %u\n", func, line,
560 db->index_16);
561 pr_debug("%s:%d: db.count_16: %u\n", func, line,
562 db->count_16);
563}
564
565static void os_area_db_init(struct os_area_db *db)
566{
567 enum {
568 HEADER_SIZE = offsetof(struct os_area_db, _db_data),
569 INDEX_64_COUNT = 64,
570 VALUES_64_COUNT = 57,
571 INDEX_32_COUNT = 64,
572 VALUES_32_COUNT = 57,
573 INDEX_16_COUNT = 64,
574 VALUES_16_COUNT = 57,
575 };
576
577 memset(db, 0, sizeof(struct os_area_db));
578
579 memcpy(db->magic_num, OS_AREA_DB_MAGIC_NUM, sizeof(db->magic_num));
580 db->version = 1;
581 db->index_64 = HEADER_SIZE;
582 db->count_64 = VALUES_64_COUNT;
583 db->index_32 = HEADER_SIZE
584 + INDEX_64_COUNT * sizeof(struct db_index)
585 + VALUES_64_COUNT * sizeof(u64);
586 db->count_32 = VALUES_32_COUNT;
587 db->index_16 = HEADER_SIZE
588 + INDEX_64_COUNT * sizeof(struct db_index)
589 + VALUES_64_COUNT * sizeof(u64)
590 + INDEX_32_COUNT * sizeof(struct db_index)
591 + VALUES_32_COUNT * sizeof(u32);
592 db->count_16 = VALUES_16_COUNT;
593
594
595
596 BUILD_BUG_ON(sizeof(struct db_index) != 1);
597 BUILD_BUG_ON(sizeof(struct os_area_db) != 2 * OS_AREA_SEGMENT_SIZE);
598 BUILD_BUG_ON(INDEX_64_COUNT & 0x7);
599 BUILD_BUG_ON(VALUES_64_COUNT > INDEX_64_COUNT);
600 BUILD_BUG_ON(INDEX_32_COUNT & 0x7);
601 BUILD_BUG_ON(VALUES_32_COUNT > INDEX_32_COUNT);
602 BUILD_BUG_ON(INDEX_16_COUNT & 0x7);
603 BUILD_BUG_ON(VALUES_16_COUNT > INDEX_16_COUNT);
604 BUILD_BUG_ON(HEADER_SIZE
605 + INDEX_64_COUNT * sizeof(struct db_index)
606 + VALUES_64_COUNT * sizeof(u64)
607 + INDEX_32_COUNT * sizeof(struct db_index)
608 + VALUES_32_COUNT * sizeof(u32)
609 + INDEX_16_COUNT * sizeof(struct db_index)
610 + VALUES_16_COUNT * sizeof(u16)
611 > sizeof(struct os_area_db));
612}
613
614
615
616
617
618
619static int update_flash_db(void)
620{
621 const unsigned int buf_len = 8 * OS_AREA_SEGMENT_SIZE;
622 struct os_area_header *header;
623 ssize_t count;
624 int error;
625 loff_t pos;
626 struct os_area_db* db;
627
628
629
630 header = kmalloc(buf_len, GFP_KERNEL);
631 if (!header) {
632 pr_debug("%s: kmalloc failed\n", __func__);
633 return -ENOMEM;
634 }
635
636 count = os_area_flash_read(header, buf_len, 0);
637 if (count < 0) {
638 pr_debug("%s: os_area_flash_read failed %zd\n", __func__,
639 count);
640 error = count;
641 goto fail;
642 }
643
644 pos = header->db_area_offset * OS_AREA_SEGMENT_SIZE;
645 if (count < OS_AREA_SEGMENT_SIZE || verify_header(header) ||
646 count < pos) {
647 pr_debug("%s: verify_header failed\n", __func__);
648 dump_header(header);
649 error = -EINVAL;
650 goto fail;
651 }
652
653
654
655 db = (void *)header + pos;
656
657 error = db_verify(db);
658 if (error) {
659 pr_notice("%s: Verify of flash database failed, formatting.\n",
660 __func__);
661 dump_db(db);
662 os_area_db_init(db);
663 }
664
665
666
667 db_set_64(db, &os_area_db_id_rtc_diff, saved_params.rtc_diff);
668
669 count = os_area_flash_write(db, sizeof(struct os_area_db), pos);
670 if (count < sizeof(struct os_area_db)) {
671 pr_debug("%s: os_area_flash_write failed %zd\n", __func__,
672 count);
673 error = count < 0 ? count : -EIO;
674 }
675
676fail:
677 kfree(header);
678 return error;
679}
680
681
682
683
684
685
686
687
688static void os_area_queue_work_handler(struct work_struct *work)
689{
690 struct device_node *node;
691 int error;
692
693 pr_debug(" -> %s:%d\n", __func__, __LINE__);
694
695 node = of_find_node_by_path("/");
696 if (node) {
697 os_area_set_property(node, &property_rtc_diff);
698 of_node_put(node);
699 } else
700 pr_debug("%s:%d of_find_node_by_path failed\n",
701 __func__, __LINE__);
702
703 error = update_flash_db();
704 if (error)
705 pr_warning("%s: Could not update FLASH ROM\n", __func__);
706
707 pr_debug(" <- %s:%d\n", __func__, __LINE__);
708}
709
710static void os_area_queue_work(void)
711{
712 static DECLARE_WORK(q, os_area_queue_work_handler);
713
714 wmb();
715 schedule_work(&q);
716}
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732void __init ps3_os_area_save_params(void)
733{
734 int result;
735 u64 lpar_addr;
736 unsigned int size;
737 struct os_area_header *header;
738 struct os_area_params *params;
739 struct os_area_db *db;
740
741 pr_debug(" -> %s:%d\n", __func__, __LINE__);
742
743 result = ps3_repository_read_boot_dat_info(&lpar_addr, &size);
744
745 if (result) {
746 pr_debug("%s:%d ps3_repository_read_boot_dat_info failed\n",
747 __func__, __LINE__);
748 return;
749 }
750
751 header = (struct os_area_header *)__va(lpar_addr);
752 params = (struct os_area_params *)__va(lpar_addr
753 + OS_AREA_SEGMENT_SIZE);
754
755 result = verify_header(header);
756
757 if (result) {
758
759 pr_debug("%s:%d verify_header failed\n", __func__, __LINE__);
760 dump_header(header);
761 return;
762 }
763
764 db = (struct os_area_db *)__va(lpar_addr
765 + header->db_area_offset * OS_AREA_SEGMENT_SIZE);
766
767 dump_header(header);
768 dump_params(params);
769 dump_db(db);
770
771 result = db_verify(db) || db_get_rtc_diff(db, &saved_params.rtc_diff);
772 if (result)
773 saved_params.rtc_diff = params->rtc_diff ? params->rtc_diff
774 : SECONDS_FROM_1970_TO_2000;
775 saved_params.av_multi_out = params->av_multi_out;
776 saved_params.valid = 1;
777
778 memset(header, 0, sizeof(*header));
779
780 pr_debug(" <- %s:%d\n", __func__, __LINE__);
781}
782
783
784
785
786
787void __init ps3_os_area_init(void)
788{
789 struct device_node *node;
790
791 pr_debug(" -> %s:%d\n", __func__, __LINE__);
792
793 node = of_find_node_by_path("/");
794
795 if (!saved_params.valid && node) {
796
797 os_area_get_property(node, &property_rtc_diff);
798 os_area_get_property(node, &property_av_multi_out);
799 }
800
801 if(!saved_params.rtc_diff)
802 saved_params.rtc_diff = SECONDS_FROM_1970_TO_2000;
803
804 if (node) {
805 os_area_set_property(node, &property_rtc_diff);
806 os_area_set_property(node, &property_av_multi_out);
807 of_node_put(node);
808 } else
809 pr_debug("%s:%d of_find_node_by_path failed\n",
810 __func__, __LINE__);
811
812 pr_debug(" <- %s:%d\n", __func__, __LINE__);
813}
814
815
816
817
818
819u64 ps3_os_area_get_rtc_diff(void)
820{
821 return saved_params.rtc_diff;
822}
823EXPORT_SYMBOL_GPL(ps3_os_area_get_rtc_diff);
824
825
826
827
828
829
830
831
832void ps3_os_area_set_rtc_diff(u64 rtc_diff)
833{
834 if (saved_params.rtc_diff != rtc_diff) {
835 saved_params.rtc_diff = rtc_diff;
836 os_area_queue_work();
837 }
838}
839EXPORT_SYMBOL_GPL(ps3_os_area_set_rtc_diff);
840
841
842
843
844
845enum ps3_param_av_multi_out ps3_os_area_get_av_multi_out(void)
846{
847 return saved_params.av_multi_out;
848}
849EXPORT_SYMBOL_GPL(ps3_os_area_get_av_multi_out);
850