Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Geoff Levand | 3093 | 91.59% | 9 | 34.62% |
Geert Uytterhoeven | 259 | 7.67% | 5 | 19.23% |
Dan Carpenter | 4 | 0.12% | 1 | 3.85% |
Nathan Fontenot | 3 | 0.09% | 1 | 3.85% |
Michael Ellerman | 3 | 0.09% | 1 | 3.85% |
Paul Gortmaker | 3 | 0.09% | 1 | 3.85% |
Linus Torvalds (pre-git) | 2 | 0.06% | 1 | 3.85% |
Nick Child | 2 | 0.06% | 1 | 3.85% |
Thomas Gleixner | 2 | 0.06% | 1 | 3.85% |
Yinghai Lu | 2 | 0.06% | 1 | 3.85% |
Stephen Rothwell | 1 | 0.03% | 1 | 3.85% |
Mathieu Malaterre | 1 | 0.03% | 1 | 3.85% |
Linus Torvalds | 1 | 0.03% | 1 | 3.85% |
Joe Perches | 1 | 0.03% | 1 | 3.85% |
Total | 3377 | 26 |
// SPDX-License-Identifier: GPL-2.0-only /* * PS3 flash memory os area. * * Copyright (C) 2006 Sony Computer Entertainment Inc. * Copyright 2006 Sony Corp. */ #include <linux/kernel.h> #include <linux/io.h> #include <linux/workqueue.h> #include <linux/fs.h> #include <linux/syscalls.h> #include <linux/export.h> #include <linux/ctype.h> #include <linux/memblock.h> #include <linux/of.h> #include <linux/slab.h> #include "platform.h" enum { OS_AREA_SEGMENT_SIZE = 0X200, }; enum os_area_ldr_format { HEADER_LDR_FORMAT_RAW = 0, HEADER_LDR_FORMAT_GZIP = 1, }; #define OS_AREA_HEADER_MAGIC_NUM "cell_ext_os_area" /** * struct os_area_header - os area header segment. * @magic_num: Always 'cell_ext_os_area'. * @hdr_version: Header format version number. * @db_area_offset: Starting segment number of other os database area. * @ldr_area_offset: Starting segment number of bootloader image area. * @ldr_format: HEADER_LDR_FORMAT flag. * @ldr_size: Size of bootloader image in bytes. * * Note that the docs refer to area offsets. These are offsets in units of * segments from the start of the os area (top of the header). These are * better thought of as segment numbers. The os area of the os area is * reserved for the os image. */ struct os_area_header { u8 magic_num[16]; u32 hdr_version; u32 db_area_offset; u32 ldr_area_offset; u32 _reserved_1; u32 ldr_format; u32 ldr_size; u32 _reserved_2[6]; }; enum os_area_boot_flag { PARAM_BOOT_FLAG_GAME_OS = 0, PARAM_BOOT_FLAG_OTHER_OS = 1, }; enum os_area_ctrl_button { PARAM_CTRL_BUTTON_O_IS_YES = 0, PARAM_CTRL_BUTTON_X_IS_YES = 1, }; /** * struct os_area_params - os area params segment. * @boot_flag: User preference of operating system, PARAM_BOOT_FLAG flag. * @num_params: Number of params in this (params) segment. * @rtc_diff: Difference in seconds between 1970 and the ps3 rtc value. * @av_multi_out: User preference of AV output, PARAM_AV_MULTI_OUT flag. * @ctrl_button: User preference of controller button config, PARAM_CTRL_BUTTON * flag. * @static_ip_addr: User preference of static IP address. * @network_mask: User preference of static network mask. * @default_gateway: User preference of static default gateway. * @dns_primary: User preference of static primary dns server. * @dns_secondary: User preference of static secondary dns server. * * The ps3 rtc maintains a read-only value that approximates seconds since * 2000-01-01 00:00:00 UTC. * * User preference of zero for static_ip_addr means use dhcp. */ struct os_area_params { u32 boot_flag; u32 _reserved_1[3]; u32 num_params; u32 _reserved_2[3]; /* param 0 */ s64 rtc_diff; u8 av_multi_out; u8 ctrl_button; u8 _reserved_3[6]; /* param 1 */ u8 static_ip_addr[4]; u8 network_mask[4]; u8 default_gateway[4]; u8 _reserved_4[4]; /* param 2 */ u8 dns_primary[4]; u8 dns_secondary[4]; u8 _reserved_5[8]; }; #define OS_AREA_DB_MAGIC_NUM "-db-" /** * struct os_area_db - Shared flash memory database. * @magic_num: Always '-db-'. * @version: os_area_db format version number. * @index_64: byte offset of the database id index for 64 bit variables. * @count_64: number of usable 64 bit index entries * @index_32: byte offset of the database id index for 32 bit variables. * @count_32: number of usable 32 bit index entries * @index_16: byte offset of the database id index for 16 bit variables. * @count_16: number of usable 16 bit index entries * * Flash rom storage for exclusive use by guests running in the other os lpar. * The current system configuration allocates 1K (two segments) for other os * use. */ struct os_area_db { u8 magic_num[4]; u16 version; u16 _reserved_1; u16 index_64; u16 count_64; u16 index_32; u16 count_32; u16 index_16; u16 count_16; u32 _reserved_2; u8 _db_data[1000]; }; /** * enum os_area_db_owner - Data owners. */ enum os_area_db_owner { OS_AREA_DB_OWNER_ANY = -1, OS_AREA_DB_OWNER_NONE = 0, OS_AREA_DB_OWNER_PROTOTYPE = 1, OS_AREA_DB_OWNER_LINUX = 2, OS_AREA_DB_OWNER_PETITBOOT = 3, OS_AREA_DB_OWNER_MAX = 32, }; enum os_area_db_key { OS_AREA_DB_KEY_ANY = -1, OS_AREA_DB_KEY_NONE = 0, OS_AREA_DB_KEY_RTC_DIFF = 1, OS_AREA_DB_KEY_VIDEO_MODE = 2, OS_AREA_DB_KEY_MAX = 8, }; struct os_area_db_id { int owner; int key; }; static const struct os_area_db_id os_area_db_id_empty = { .owner = OS_AREA_DB_OWNER_NONE, .key = OS_AREA_DB_KEY_NONE }; static const struct os_area_db_id os_area_db_id_any = { .owner = OS_AREA_DB_OWNER_ANY, .key = OS_AREA_DB_KEY_ANY }; static const struct os_area_db_id os_area_db_id_rtc_diff = { .owner = OS_AREA_DB_OWNER_LINUX, .key = OS_AREA_DB_KEY_RTC_DIFF }; #define SECONDS_FROM_1970_TO_2000 946684800LL /** * struct saved_params - Static working copies of data from the PS3 'os area'. * * The order of preference we use for the rtc_diff source: * 1) The database value. * 2) The game os value. * 3) The number of seconds from 1970 to 2000. */ static struct saved_params { unsigned int valid; s64 rtc_diff; unsigned int av_multi_out; } saved_params; static struct property property_rtc_diff = { .name = "linux,rtc_diff", .length = sizeof(saved_params.rtc_diff), .value = &saved_params.rtc_diff, }; static struct property property_av_multi_out = { .name = "linux,av_multi_out", .length = sizeof(saved_params.av_multi_out), .value = &saved_params.av_multi_out, }; static DEFINE_MUTEX(os_area_flash_mutex); static const struct ps3_os_area_flash_ops *os_area_flash_ops; void ps3_os_area_flash_register(const struct ps3_os_area_flash_ops *ops) { mutex_lock(&os_area_flash_mutex); os_area_flash_ops = ops; mutex_unlock(&os_area_flash_mutex); } EXPORT_SYMBOL_GPL(ps3_os_area_flash_register); static ssize_t os_area_flash_read(void *buf, size_t count, loff_t pos) { ssize_t res = -ENODEV; mutex_lock(&os_area_flash_mutex); if (os_area_flash_ops) res = os_area_flash_ops->read(buf, count, pos); mutex_unlock(&os_area_flash_mutex); return res; } static ssize_t os_area_flash_write(const void *buf, size_t count, loff_t pos) { ssize_t res = -ENODEV; mutex_lock(&os_area_flash_mutex); if (os_area_flash_ops) res = os_area_flash_ops->write(buf, count, pos); mutex_unlock(&os_area_flash_mutex); return res; } /** * os_area_set_property - Add or overwrite a saved_params value to the device tree. * * Overwrites an existing property. */ static void os_area_set_property(struct device_node *node, struct property *prop) { int result; struct property *tmp = of_find_property(node, prop->name, NULL); if (tmp) { pr_debug("%s:%d found %s\n", __func__, __LINE__, prop->name); of_remove_property(node, tmp); } result = of_add_property(node, prop); if (result) pr_debug("%s:%d of_set_property failed\n", __func__, __LINE__); } /** * os_area_get_property - Get a saved_params value from the device tree. * */ static void __init os_area_get_property(struct device_node *node, struct property *prop) { const struct property *tmp = of_find_property(node, prop->name, NULL); if (tmp) { BUG_ON(prop->length != tmp->length); memcpy(prop->value, tmp->value, prop->length); } else pr_debug("%s:%d not found %s\n", __func__, __LINE__, prop->name); } static void dump_field(char *s, const u8 *field, int size_of_field) { #if defined(DEBUG) int i; for (i = 0; i < size_of_field; i++) s[i] = isprint(field[i]) ? field[i] : '.'; s[i] = 0; #endif } #define dump_header(_a) _dump_header(_a, __func__, __LINE__) static void _dump_header(const struct os_area_header *h, const char *func, int line) { char str[sizeof(h->magic_num) + 1]; dump_field(str, h->magic_num, sizeof(h->magic_num)); pr_debug("%s:%d: h.magic_num: '%s'\n", func, line, str); pr_debug("%s:%d: h.hdr_version: %u\n", func, line, h->hdr_version); pr_debug("%s:%d: h.db_area_offset: %u\n", func, line, h->db_area_offset); pr_debug("%s:%d: h.ldr_area_offset: %u\n", func, line, h->ldr_area_offset); pr_debug("%s:%d: h.ldr_format: %u\n", func, line, h->ldr_format); pr_debug("%s:%d: h.ldr_size: %xh\n", func, line, h->ldr_size); } #define dump_params(_a) _dump_params(_a, __func__, __LINE__) static void _dump_params(const struct os_area_params *p, const char *func, int line) { pr_debug("%s:%d: p.boot_flag: %u\n", func, line, p->boot_flag); pr_debug("%s:%d: p.num_params: %u\n", func, line, p->num_params); pr_debug("%s:%d: p.rtc_diff %lld\n", func, line, p->rtc_diff); pr_debug("%s:%d: p.av_multi_out %u\n", func, line, p->av_multi_out); pr_debug("%s:%d: p.ctrl_button: %u\n", func, line, p->ctrl_button); pr_debug("%s:%d: p.static_ip_addr: %u.%u.%u.%u\n", func, line, p->static_ip_addr[0], p->static_ip_addr[1], p->static_ip_addr[2], p->static_ip_addr[3]); pr_debug("%s:%d: p.network_mask: %u.%u.%u.%u\n", func, line, p->network_mask[0], p->network_mask[1], p->network_mask[2], p->network_mask[3]); pr_debug("%s:%d: p.default_gateway: %u.%u.%u.%u\n", func, line, p->default_gateway[0], p->default_gateway[1], p->default_gateway[2], p->default_gateway[3]); pr_debug("%s:%d: p.dns_primary: %u.%u.%u.%u\n", func, line, p->dns_primary[0], p->dns_primary[1], p->dns_primary[2], p->dns_primary[3]); pr_debug("%s:%d: p.dns_secondary: %u.%u.%u.%u\n", func, line, p->dns_secondary[0], p->dns_secondary[1], p->dns_secondary[2], p->dns_secondary[3]); } static int verify_header(const struct os_area_header *header) { if (memcmp(header->magic_num, OS_AREA_HEADER_MAGIC_NUM, sizeof(header->magic_num))) { pr_debug("%s:%d magic_num failed\n", __func__, __LINE__); return -1; } if (header->hdr_version < 1) { pr_debug("%s:%d hdr_version failed\n", __func__, __LINE__); return -1; } if (header->db_area_offset > header->ldr_area_offset) { pr_debug("%s:%d offsets failed\n", __func__, __LINE__); return -1; } return 0; } static int db_verify(const struct os_area_db *db) { if (memcmp(db->magic_num, OS_AREA_DB_MAGIC_NUM, sizeof(db->magic_num))) { pr_debug("%s:%d magic_num failed\n", __func__, __LINE__); return -EINVAL; } if (db->version != 1) { pr_debug("%s:%d version failed\n", __func__, __LINE__); return -EINVAL; } return 0; } struct db_index { uint8_t owner:5; uint8_t key:3; }; struct db_iterator { const struct os_area_db *db; struct os_area_db_id match_id; struct db_index *idx; struct db_index *last_idx; union { uint64_t *value_64; uint32_t *value_32; uint16_t *value_16; }; }; static unsigned int db_align_up(unsigned int val, unsigned int size) { return (val + (size - 1)) & (~(size - 1)); } /** * db_for_each_64 - Iterator for 64 bit entries. * * A NULL value for id can be used to match all entries. * OS_AREA_DB_OWNER_ANY and OS_AREA_DB_KEY_ANY can be used to match all. */ static int db_for_each_64(const struct os_area_db *db, const struct os_area_db_id *match_id, struct db_iterator *i) { next: if (!i->db) { i->db = db; i->match_id = match_id ? *match_id : os_area_db_id_any; i->idx = (void *)db + db->index_64; i->last_idx = i->idx + db->count_64; i->value_64 = (void *)db + db->index_64 + db_align_up(db->count_64, 8); } else { i->idx++; i->value_64++; } if (i->idx >= i->last_idx) { pr_debug("%s:%d: reached end\n", __func__, __LINE__); return 0; } if (i->match_id.owner != OS_AREA_DB_OWNER_ANY && i->match_id.owner != (int)i->idx->owner) goto next; if (i->match_id.key != OS_AREA_DB_KEY_ANY && i->match_id.key != (int)i->idx->key) goto next; return 1; } static int db_delete_64(struct os_area_db *db, const struct os_area_db_id *id) { struct db_iterator i; for (i.db = NULL; db_for_each_64(db, id, &i); ) { pr_debug("%s:%d: got (%d:%d) %llxh\n", __func__, __LINE__, i.idx->owner, i.idx->key, (unsigned long long)*i.value_64); i.idx->owner = 0; i.idx->key = 0; *i.value_64 = 0; } return 0; } static int db_set_64(struct os_area_db *db, const struct os_area_db_id *id, uint64_t value) { struct db_iterator i; pr_debug("%s:%d: (%d:%d) <= %llxh\n", __func__, __LINE__, id->owner, id->key, (unsigned long long)value); if (!id->owner || id->owner == OS_AREA_DB_OWNER_ANY || id->key == OS_AREA_DB_KEY_ANY) { pr_debug("%s:%d: bad id: (%d:%d)\n", __func__, __LINE__, id->owner, id->key); return -1; } db_delete_64(db, id); i.db = NULL; if (db_for_each_64(db, &os_area_db_id_empty, &i)) { pr_debug("%s:%d: got (%d:%d) %llxh\n", __func__, __LINE__, i.idx->owner, i.idx->key, (unsigned long long)*i.value_64); i.idx->owner = id->owner; i.idx->key = id->key; *i.value_64 = value; pr_debug("%s:%d: set (%d:%d) <= %llxh\n", __func__, __LINE__, i.idx->owner, i.idx->key, (unsigned long long)*i.value_64); return 0; } pr_debug("%s:%d: database full.\n", __func__, __LINE__); return -1; } static int __init db_get_64(const struct os_area_db *db, const struct os_area_db_id *id, uint64_t *value) { struct db_iterator i; i.db = NULL; if (db_for_each_64(db, id, &i)) { *value = *i.value_64; pr_debug("%s:%d: found %lld\n", __func__, __LINE__, (long long int)*i.value_64); return 0; } pr_debug("%s:%d: not found\n", __func__, __LINE__); return -1; } static int __init db_get_rtc_diff(const struct os_area_db *db, int64_t *rtc_diff) { return db_get_64(db, &os_area_db_id_rtc_diff, (uint64_t*)rtc_diff); } #define dump_db(a) _dump_db(a, __func__, __LINE__) static void _dump_db(const struct os_area_db *db, const char *func, int line) { char str[sizeof(db->magic_num) + 1]; dump_field(str, db->magic_num, sizeof(db->magic_num)); pr_debug("%s:%d: db.magic_num: '%s'\n", func, line, str); pr_debug("%s:%d: db.version: %u\n", func, line, db->version); pr_debug("%s:%d: db.index_64: %u\n", func, line, db->index_64); pr_debug("%s:%d: db.count_64: %u\n", func, line, db->count_64); pr_debug("%s:%d: db.index_32: %u\n", func, line, db->index_32); pr_debug("%s:%d: db.count_32: %u\n", func, line, db->count_32); pr_debug("%s:%d: db.index_16: %u\n", func, line, db->index_16); pr_debug("%s:%d: db.count_16: %u\n", func, line, db->count_16); } static void os_area_db_init(struct os_area_db *db) { enum { HEADER_SIZE = offsetof(struct os_area_db, _db_data), INDEX_64_COUNT = 64, VALUES_64_COUNT = 57, INDEX_32_COUNT = 64, VALUES_32_COUNT = 57, INDEX_16_COUNT = 64, VALUES_16_COUNT = 57, }; memset(db, 0, sizeof(struct os_area_db)); memcpy(db->magic_num, OS_AREA_DB_MAGIC_NUM, sizeof(db->magic_num)); db->version = 1; db->index_64 = HEADER_SIZE; db->count_64 = VALUES_64_COUNT; db->index_32 = HEADER_SIZE + INDEX_64_COUNT * sizeof(struct db_index) + VALUES_64_COUNT * sizeof(u64); db->count_32 = VALUES_32_COUNT; db->index_16 = HEADER_SIZE + INDEX_64_COUNT * sizeof(struct db_index) + VALUES_64_COUNT * sizeof(u64) + INDEX_32_COUNT * sizeof(struct db_index) + VALUES_32_COUNT * sizeof(u32); db->count_16 = VALUES_16_COUNT; /* Rules to check db layout. */ BUILD_BUG_ON(sizeof(struct db_index) != 1); BUILD_BUG_ON(sizeof(struct os_area_db) != 2 * OS_AREA_SEGMENT_SIZE); BUILD_BUG_ON(INDEX_64_COUNT & 0x7); BUILD_BUG_ON(VALUES_64_COUNT > INDEX_64_COUNT); BUILD_BUG_ON(INDEX_32_COUNT & 0x7); BUILD_BUG_ON(VALUES_32_COUNT > INDEX_32_COUNT); BUILD_BUG_ON(INDEX_16_COUNT & 0x7); BUILD_BUG_ON(VALUES_16_COUNT > INDEX_16_COUNT); BUILD_BUG_ON(HEADER_SIZE + INDEX_64_COUNT * sizeof(struct db_index) + VALUES_64_COUNT * sizeof(u64) + INDEX_32_COUNT * sizeof(struct db_index) + VALUES_32_COUNT * sizeof(u32) + INDEX_16_COUNT * sizeof(struct db_index) + VALUES_16_COUNT * sizeof(u16) > sizeof(struct os_area_db)); } /** * update_flash_db - Helper for os_area_queue_work_handler. * */ static int update_flash_db(void) { const unsigned int buf_len = 8 * OS_AREA_SEGMENT_SIZE; struct os_area_header *header; ssize_t count; int error; loff_t pos; struct os_area_db* db; /* Read in header and db from flash. */ header = kmalloc(buf_len, GFP_KERNEL); if (!header) return -ENOMEM; count = os_area_flash_read(header, buf_len, 0); if (count < 0) { pr_debug("%s: os_area_flash_read failed %zd\n", __func__, count); error = count; goto fail; } pos = header->db_area_offset * OS_AREA_SEGMENT_SIZE; if (count < OS_AREA_SEGMENT_SIZE || verify_header(header) || count < pos) { pr_debug("%s: verify_header failed\n", __func__); dump_header(header); error = -EINVAL; goto fail; } /* Now got a good db offset and some maybe good db data. */ db = (void *)header + pos; error = db_verify(db); if (error) { pr_notice("%s: Verify of flash database failed, formatting.\n", __func__); dump_db(db); os_area_db_init(db); } /* Now got good db data. */ db_set_64(db, &os_area_db_id_rtc_diff, saved_params.rtc_diff); count = os_area_flash_write(db, sizeof(struct os_area_db), pos); if (count < 0 || count < sizeof(struct os_area_db)) { pr_debug("%s: os_area_flash_write failed %zd\n", __func__, count); error = count < 0 ? count : -EIO; } fail: kfree(header); return error; } /** * os_area_queue_work_handler - Asynchronous write handler. * * An asynchronous write for flash memory and the device tree. Do not * call directly, use os_area_queue_work(). */ static void os_area_queue_work_handler(struct work_struct *work) { struct device_node *node; int error; pr_debug(" -> %s:%d\n", __func__, __LINE__); node = of_find_node_by_path("/"); if (node) { os_area_set_property(node, &property_rtc_diff); of_node_put(node); } else pr_debug("%s:%d of_find_node_by_path failed\n", __func__, __LINE__); error = update_flash_db(); if (error) pr_warn("%s: Could not update FLASH ROM\n", __func__); pr_debug(" <- %s:%d\n", __func__, __LINE__); } static void os_area_queue_work(void) { static DECLARE_WORK(q, os_area_queue_work_handler); wmb(); schedule_work(&q); } /** * ps3_os_area_save_params - Copy data from os area mirror to @saved_params. * * For the convenience of the guest the HV makes a copy of the os area in * flash to a high address in the boot memory region and then puts that RAM * address and the byte count into the repository for retrieval by the guest. * We copy the data we want into a static variable and allow the memory setup * by the HV to be claimed by the memblock manager. * * The os area mirror will not be available to a second stage kernel, and * the header verify will fail. In this case, the saved_params values will * be set from flash memory or the passed in device tree in ps3_os_area_init(). */ void __init ps3_os_area_save_params(void) { int result; u64 lpar_addr; unsigned int size; struct os_area_header *header; struct os_area_params *params; struct os_area_db *db; pr_debug(" -> %s:%d\n", __func__, __LINE__); result = ps3_repository_read_boot_dat_info(&lpar_addr, &size); if (result) { pr_debug("%s:%d ps3_repository_read_boot_dat_info failed\n", __func__, __LINE__); return; } header = (struct os_area_header *)__va(lpar_addr); params = (struct os_area_params *)__va(lpar_addr + OS_AREA_SEGMENT_SIZE); result = verify_header(header); if (result) { /* Second stage kernels exit here. */ pr_debug("%s:%d verify_header failed\n", __func__, __LINE__); dump_header(header); return; } db = (struct os_area_db *)__va(lpar_addr + header->db_area_offset * OS_AREA_SEGMENT_SIZE); dump_header(header); dump_params(params); dump_db(db); result = db_verify(db) || db_get_rtc_diff(db, &saved_params.rtc_diff); if (result) saved_params.rtc_diff = params->rtc_diff ? params->rtc_diff : SECONDS_FROM_1970_TO_2000; saved_params.av_multi_out = params->av_multi_out; saved_params.valid = 1; memset(header, 0, sizeof(*header)); pr_debug(" <- %s:%d\n", __func__, __LINE__); } /** * ps3_os_area_init - Setup os area device tree properties as needed. */ void __init ps3_os_area_init(void) { struct device_node *node; pr_debug(" -> %s:%d\n", __func__, __LINE__); node = of_find_node_by_path("/"); if (!saved_params.valid && node) { /* Second stage kernels should have a dt entry. */ os_area_get_property(node, &property_rtc_diff); os_area_get_property(node, &property_av_multi_out); } if(!saved_params.rtc_diff) saved_params.rtc_diff = SECONDS_FROM_1970_TO_2000; if (node) { os_area_set_property(node, &property_rtc_diff); os_area_set_property(node, &property_av_multi_out); of_node_put(node); } else pr_debug("%s:%d of_find_node_by_path failed\n", __func__, __LINE__); pr_debug(" <- %s:%d\n", __func__, __LINE__); } /** * ps3_os_area_get_rtc_diff - Returns the rtc diff value. */ u64 ps3_os_area_get_rtc_diff(void) { return saved_params.rtc_diff; } EXPORT_SYMBOL_GPL(ps3_os_area_get_rtc_diff); /** * ps3_os_area_set_rtc_diff - Set the rtc diff value. * * An asynchronous write is needed to support writing updates from * the timer interrupt context. */ void ps3_os_area_set_rtc_diff(u64 rtc_diff) { if (saved_params.rtc_diff != rtc_diff) { saved_params.rtc_diff = rtc_diff; os_area_queue_work(); } } EXPORT_SYMBOL_GPL(ps3_os_area_set_rtc_diff); /** * ps3_os_area_get_av_multi_out - Returns the default video mode. */ enum ps3_param_av_multi_out ps3_os_area_get_av_multi_out(void) { return saved_params.av_multi_out; } EXPORT_SYMBOL_GPL(ps3_os_area_get_av_multi_out);
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