SceSdstor: Difference between revisions
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== Module == | == Module == | ||
This module is responsible for initializing all storage devices. This includes: | This module is responsible for initializing all storage devices. This includes: | ||
* [[EMMC|eMMC]] | * [[EMMC|eMMC]] | ||
* [[Game_Card| | * [[Game_Card|Game gard]] | ||
* [[Memory_Card|Memory card]] | * [[Memory_Card|Memory card]] | ||
* | * USB Mass Storage | ||
* Micro SD card / SD card | |||
{| class="wikitable" | |||
|- | |||
! Version !! World !! Privilege | |||
|- | |||
| 1.69-3.740.011 || Non-secure || Kernel | |||
|} | |||
== Libraries == | |||
SceSdstor module does not export any function exсept module_start. | |||
== Interrupt Table == | |||
{| class="wikitable" | |||
|- | |||
! Index !! Code !! Name | |||
|- | |||
| 0 || 0xDC || SceSdif0 | |||
|- | |||
| 1 || 0xDD || SceSdif1 | |||
|- | |||
| 2 || 0x3C || SceMsifIns | |||
|- | |||
| 3 || 0xF || SceUsbMass | |||
|- | |||
| 4 || 0xDF || SceSdif3 | |||
|} | |||
== Block Device Naming Rules == | |||
First level prefix: port. | |||
{| class="wikitable" | {| class="wikitable" | ||
|- | |- | ||
! Name !! Index !! Long name !! Description | |||
|- | |||
| int || 0 || internal || eMMC | |||
|- | |- | ||
| | | ext || 1 || external || SD card | ||
|- | |- | ||
| 3 | | gcd || 1 || game card || Game Card | ||
|- | |||
| mcd || 2 || memory card || Memory Card | |||
|- | |||
| uma || 3 || usb mass || USB mass storage device | |||
|- | |||
| usd || 4 || micro sd || Micro SD card | |||
|- | |||
| xmc || 0xFF || external memory card || Actual Memory Card when internal eMMC is mounted as Memory Card | |||
|} | |} | ||
== | Second level prefix: kind | ||
*lp - general. | |||
*pp - no part. | |||
Third level prefix: stat | |||
*ina: inactive | |||
*act: active | |||
*ign: ignore (same behaviour as inactive) | |||
Fourth level prefix: id | |||
*unused | |||
*idstor | |||
*sloader | |||
*os | |||
*vsh | |||
*vshdata | |||
*vtrm | |||
*user | |||
*userext | |||
*gamero | |||
*gamerw | |||
*updater | |||
*sysdata | |||
*mediaid | |||
*pidata | |||
*entire | |||
== Partition Block Devices == | |||
Each partition has a numeric alias (string) that seems to be used to reference the partition. | |||
Numeric names most likely follow order of partitions in MBR. | |||
To access device node use <code>/dev</code> prefix (like <code>/dev/gcd-lp-ign-gamero</code>). | |||
There can be up to 16 aliases from 0 to 15 per physical device (eMMC, Game Card, Memory Card) and alias 16 is hardcoded and called <code>entire</code>. | |||
Not all numeric names are fixed but <code>entire</code> numeric names are hardcoded. | |||
{| class="wikitable" | |||
|- | |||
! Block device !! Numeric name !! Hardcoded | |||
|- | |||
| int-lp-ign-idstor || 000 || no | |||
|- | |||
| int-lp-act-sloader/int-lp-ina-sloader || 001 || no | |||
|- | |||
| int-lp-act-sloader/int-lp-ina-sloader || 002 || no | |||
|- | |||
| int-lp-act-os/int-lp-ina-os || 003 || no | |||
|- | |||
| int-lp-act-os/int-lp-ina-os || 004 || no | |||
|- | |||
| int-lp-ign-sysdata || 005 || no | |||
|- | |||
| int-lp-ign-vtrm || 006 || no | |||
|- | |||
| int-lp-ign-vsh || 007 || no | |||
|- | |||
| int-lp-ign-vshdata || 008 || no | |||
|- | |||
| int-lp-ign-updater || 009 || no | |||
|- | |||
| int-lp-ign-pidata || 010 || no | |||
|- | |||
| int-lp-ign-user || 011 || no | |||
|- | |||
| int-lp-ign-userext || 012 || no | |||
|- | |||
| int-lp-act-entire || 016 || yes | |||
|- | |||
| gcd-lp-ign-gamero, gcd-lp-act-mediaid (need to confirm) || 100 || no | |||
|- | |||
| gcd-lp-ign-gamerw (need to confirm) || 101 || no | |||
|- | |||
| ext-lp-act-entire || 116 || yes | |||
|- | |||
| mcd-lp-act-mediaid || 200 || no | |||
|- | |||
| mcd-lp-ign-userext || 201 || no | |||
|- | |||
| mcd-lp-act-entire || 216 || yes | |||
|- | |||
| uma-lp-act-entire || 316 || yes | |||
|- | |||
| usd-lp-act-entire || 416 || yes | |||
|} | |||
== Types == | |||
It looks like SceSdstor driver uses its own device type. | |||
{| class="wikitable" | |||
|- | |||
! Device Type Index | |||
! Description | |||
|- | |||
| 0 | |||
| MMC card | |||
|- | |||
| 1 | |||
| SD card | |||
|- | |||
| 2 | |||
| Memory Card | |||
|- | |||
| 3 | |||
| USB Mass Storage | |||
|} | |||
Also see [https://github.com/vitasdk/vita-headers/blob/master/include/psp2kern/internal/sdstor.h here (vita-headers)] | |||
<source lang="C"> | |||
typedef struct unknown_1C2C { // size is 0x1C | |||
uint8_t data[0x1C]; | |||
} unknown_1C2C; | |||
#define CARD_REMOVE_SDSTOR_REQUEST_EVENT_FLAG 0x01 | |||
#define IO_DEVCTL_SDSTOR_REQUEST_EVENT_FLAG 0x02 | |||
#define CARD_INSERT_SDSTOR_REQUEST_EVENT_FLAG 0x10 | |||
#define SUSPEND_SDSTOR_REQUEST_EVENT_FLAG 0x100 | |||
#define RESUME_SDSTOR_REQUEST_EVENT_FLAG 0x1000 | |||
typedef struct interrupt_argument { // size is 0x28 | |||
uint32_t unk_0; | |||
SceUID SceSdstorRequest_evid; // event id | |||
SceUID SceSdstorOpSync_evid; // event id | |||
interrupt_info* intr_info; // | |||
unknown_1C2C* unk_10; | |||
// card swap protection | |||
char cid_rnd[0x10]; // cid of the card / randomly generated non zero byte array / zero | |||
uint8_t intr_table_index; // check interrupt table section (also sd_stor_device index) | |||
uint8_t unk_25; // = 0 | |||
uint8_t unk_26; // = 0 | |||
uint8_t unk_27; | |||
} interrupt_argument; | |||
typedef int(insert_handler)(int unk, interrupt_argument* arg); | |||
typedef int(remove_handler)(int unk, interrupt_argument* arg); | |||
#define SDSTOR_SUBINTERRUPT_CODE_INSERT 0 | |||
#define SDSTOR_SUBINTERRUPT_CODE_REMOVE 1 | |||
typedef struct interrupt_info { // size is 0xC | |||
insert_handler* SceSdstorCardInsert_handler; | |||
remove_handler* SceSdstorCardRemove_handler; | |||
uint8_t intr_table_index; // check interrupt table section | |||
uint8_t SceSdstorCardInsert_subintr_code; | |||
uint8_t SceSdstorCardRemove_subintr_code; | |||
uint8_t unk_0xB; | |||
} interrupt_info; | |||
</source> | |||
== | == Data segment layout == | ||
{| class="wikitable" | {| class="wikitable" | ||
|- | |- | ||
! | ! Address !! Size !! Description | ||
|- | |||
| 0x0000 || 0x20 || unknown | |||
|- | |||
| 0x0020 || 0x14 || array of 5 integers (number created device handles?) (each corresponds to sd_stor_device) | |||
|- | |||
| 0x0034 || 0x4 || unknown | |||
|- | |||
| 0x0038 || 0x4 || <code>SceSdStorDeviceHandle</code> mempool SceUID of size 0x2000 | |||
|- | |||
| 0x003C || 0x4 || unknown | |||
|- | |||
| 0x0040 || 0x200 || [[Partitions#Master Block|MBR]] of [[EMMC|eMMC]] | |||
|- | |||
| 0x0240 || 0x200 || [[Partitions#Master Block|MBR]] of [[Game_Card|Game card]] | |||
|- | |||
| 0x0440 || 0x200 || [[Partitions#Master Block|MBR]] of [[Memory_Card|Memory card]] | |||
|- | |||
| 0x0640 || 0x200 || [[Partitions#Master Block|MBR]] of USB Mass Storage | |||
|- | |||
| 0x0840 || 0x200 || [[Partitions#Master Block|MBR]] of micro SD card (usd device) | |||
|- | |||
| 0x0A40 || 0x238 || sdstor_mbr_ctx element 0 | |||
|- | |||
| 0x0C78 || 0x238 || sdstor_mbr_ctx element 1 | |||
|- | |||
| 0x0EB0 || 0x238 || sdstor_mbr_ctx element 2 | |||
|- | |||
| 0x10E8 || 0x238 || sdstor_mbr_ctx element 3 | |||
|- | |||
| 0x1320 || 0x238 || sdstor_mbr_ctx element 4 | |||
|- | |||
| 0x1558 || 0x54 || sd_stor_device element 0 | |||
|- | |||
| 0x15AC || 0x54 || sd_stor_device element 1 | |||
|- | |||
| 0x1600 || 0x54 || sd_stor_device element 2 | |||
|- | |||
| 0x1654 || 0x54 || sd_stor_device element 3 | |||
|- | |||
| 0x16A8 || 0x54 || sd_stor_device element 4 | |||
|- | |||
| 0x16FC || 0x20 || [[SceIofilemgr#sceVfsAddVfs|vfs_add_data]] <code>sdstor_dev_fs</code> node | |||
|- | |||
| 0x171C || 0x04 || <code>SceSdStorVfs</code> mempool SceUID of size 0x2000 | |||
|- | |||
| 0x1720 || 0x200 || first sector of external partition (0xD) (gcd-lp-act-mediaid) of game card (interrupt index 1) | |||
|- | |||
| 0x1920 || 0x200 || first sector of external partition (0xD) (mcd-lp-act-mediaid) of memory card (interrupt index 2) | |||
|- | |||
| 0x1B20 || 0xC8 || array of 5 <code>interrupt_argument</code> structures | |||
|- | |||
| 0x1BE8 || 0x8 || suspend_register_callback opt | |||
|- | |||
| 0x1BF0 || 0x3C || array of 5 <code>interrupt_info</code> structures | |||
|- | |||
| 0x1C2C || 0x8C || array of 5 <code>unknown_1C2C</code> structures | |||
|- | |||
| 0x1CB8 || 0x8 || unknown | |||
|- | |||
| 0x1CC0 || 0x200 || [[Partitions#Master Block|MBR]] of [[Memory_Card|Memory card]] (xmc device) | |||
|} | |} | ||
[[Category:ARM]] | |||
[[Category:Kernel]] | |||
[[Category:Modules]] | [[Category:Modules]] | ||
Latest revision as of 11:43, 13 November 2023
Module
This module is responsible for initializing all storage devices. This includes:
- eMMC
- Game gard
- Memory card
- USB Mass Storage
- Micro SD card / SD card
Version | World | Privilege |
---|---|---|
1.69-3.740.011 | Non-secure | Kernel |
Libraries
SceSdstor module does not export any function exсept module_start.
Interrupt Table
Index | Code | Name |
---|---|---|
0 | 0xDC | SceSdif0 |
1 | 0xDD | SceSdif1 |
2 | 0x3C | SceMsifIns |
3 | 0xF | SceUsbMass |
4 | 0xDF | SceSdif3 |
Block Device Naming Rules
First level prefix: port.
Name | Index | Long name | Description |
---|---|---|---|
int | 0 | internal | eMMC |
ext | 1 | external | SD card |
gcd | 1 | game card | Game Card |
mcd | 2 | memory card | Memory Card |
uma | 3 | usb mass | USB mass storage device |
usd | 4 | micro sd | Micro SD card |
xmc | 0xFF | external memory card | Actual Memory Card when internal eMMC is mounted as Memory Card |
Second level prefix: kind
- lp - general.
- pp - no part.
Third level prefix: stat
- ina: inactive
- act: active
- ign: ignore (same behaviour as inactive)
Fourth level prefix: id
- unused
- idstor
- sloader
- os
- vsh
- vshdata
- vtrm
- user
- userext
- gamero
- gamerw
- updater
- sysdata
- mediaid
- pidata
- entire
Partition Block Devices
Each partition has a numeric alias (string) that seems to be used to reference the partition.
Numeric names most likely follow order of partitions in MBR.
To access device node use /dev
prefix (like /dev/gcd-lp-ign-gamero
).
There can be up to 16 aliases from 0 to 15 per physical device (eMMC, Game Card, Memory Card) and alias 16 is hardcoded and called entire
.
Not all numeric names are fixed but entire
numeric names are hardcoded.
Block device | Numeric name | Hardcoded |
---|---|---|
int-lp-ign-idstor | 000 | no |
int-lp-act-sloader/int-lp-ina-sloader | 001 | no |
int-lp-act-sloader/int-lp-ina-sloader | 002 | no |
int-lp-act-os/int-lp-ina-os | 003 | no |
int-lp-act-os/int-lp-ina-os | 004 | no |
int-lp-ign-sysdata | 005 | no |
int-lp-ign-vtrm | 006 | no |
int-lp-ign-vsh | 007 | no |
int-lp-ign-vshdata | 008 | no |
int-lp-ign-updater | 009 | no |
int-lp-ign-pidata | 010 | no |
int-lp-ign-user | 011 | no |
int-lp-ign-userext | 012 | no |
int-lp-act-entire | 016 | yes |
gcd-lp-ign-gamero, gcd-lp-act-mediaid (need to confirm) | 100 | no |
gcd-lp-ign-gamerw (need to confirm) | 101 | no |
ext-lp-act-entire | 116 | yes |
mcd-lp-act-mediaid | 200 | no |
mcd-lp-ign-userext | 201 | no |
mcd-lp-act-entire | 216 | yes |
uma-lp-act-entire | 316 | yes |
usd-lp-act-entire | 416 | yes |
Types
It looks like SceSdstor driver uses its own device type.
Device Type Index | Description |
---|---|
0 | MMC card |
1 | SD card |
2 | Memory Card |
3 | USB Mass Storage |
Also see here (vita-headers)
typedef struct unknown_1C2C { // size is 0x1C uint8_t data[0x1C]; } unknown_1C2C; #define CARD_REMOVE_SDSTOR_REQUEST_EVENT_FLAG 0x01 #define IO_DEVCTL_SDSTOR_REQUEST_EVENT_FLAG 0x02 #define CARD_INSERT_SDSTOR_REQUEST_EVENT_FLAG 0x10 #define SUSPEND_SDSTOR_REQUEST_EVENT_FLAG 0x100 #define RESUME_SDSTOR_REQUEST_EVENT_FLAG 0x1000 typedef struct interrupt_argument { // size is 0x28 uint32_t unk_0; SceUID SceSdstorRequest_evid; // event id SceUID SceSdstorOpSync_evid; // event id interrupt_info* intr_info; // unknown_1C2C* unk_10; // card swap protection char cid_rnd[0x10]; // cid of the card / randomly generated non zero byte array / zero uint8_t intr_table_index; // check interrupt table section (also sd_stor_device index) uint8_t unk_25; // = 0 uint8_t unk_26; // = 0 uint8_t unk_27; } interrupt_argument; typedef int(insert_handler)(int unk, interrupt_argument* arg); typedef int(remove_handler)(int unk, interrupt_argument* arg); #define SDSTOR_SUBINTERRUPT_CODE_INSERT 0 #define SDSTOR_SUBINTERRUPT_CODE_REMOVE 1 typedef struct interrupt_info { // size is 0xC insert_handler* SceSdstorCardInsert_handler; remove_handler* SceSdstorCardRemove_handler; uint8_t intr_table_index; // check interrupt table section uint8_t SceSdstorCardInsert_subintr_code; uint8_t SceSdstorCardRemove_subintr_code; uint8_t unk_0xB; } interrupt_info;
Data segment layout
Address | Size | Description |
---|---|---|
0x0000 | 0x20 | unknown |
0x0020 | 0x14 | array of 5 integers (number created device handles?) (each corresponds to sd_stor_device) |
0x0034 | 0x4 | unknown |
0x0038 | 0x4 | SceSdStorDeviceHandle mempool SceUID of size 0x2000
|
0x003C | 0x4 | unknown |
0x0040 | 0x200 | MBR of eMMC |
0x0240 | 0x200 | MBR of Game card |
0x0440 | 0x200 | MBR of Memory card |
0x0640 | 0x200 | MBR of USB Mass Storage |
0x0840 | 0x200 | MBR of micro SD card (usd device) |
0x0A40 | 0x238 | sdstor_mbr_ctx element 0 |
0x0C78 | 0x238 | sdstor_mbr_ctx element 1 |
0x0EB0 | 0x238 | sdstor_mbr_ctx element 2 |
0x10E8 | 0x238 | sdstor_mbr_ctx element 3 |
0x1320 | 0x238 | sdstor_mbr_ctx element 4 |
0x1558 | 0x54 | sd_stor_device element 0 |
0x15AC | 0x54 | sd_stor_device element 1 |
0x1600 | 0x54 | sd_stor_device element 2 |
0x1654 | 0x54 | sd_stor_device element 3 |
0x16A8 | 0x54 | sd_stor_device element 4 |
0x16FC | 0x20 | vfs_add_data sdstor_dev_fs node
|
0x171C | 0x04 | SceSdStorVfs mempool SceUID of size 0x2000
|
0x1720 | 0x200 | first sector of external partition (0xD) (gcd-lp-act-mediaid) of game card (interrupt index 1) |
0x1920 | 0x200 | first sector of external partition (0xD) (mcd-lp-act-mediaid) of memory card (interrupt index 2) |
0x1B20 | 0xC8 | array of 5 interrupt_argument structures
|
0x1BE8 | 0x8 | suspend_register_callback opt |
0x1BF0 | 0x3C | array of 5 interrupt_info structures
|
0x1C2C | 0x8C | array of 5 unknown_1C2C structures
|
0x1CB8 | 0x8 | unknown |
0x1CC0 | 0x200 | MBR of Memory card (xmc device) |