In memory of Ben “bushing” Byer, who passed away on Monday, February 8th, 2016.

/dev/boot2: Difference between revisions

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/dev/boot2 does not have Ioctlv. that is normal FS.
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{{stub}}
{{stub}}
'''/dev/boot2''' can presumably be written to to install a new [[boot2]].{{check}} '''THIS HAS NOT BEEN VERIFIED, DO NOT RELY ON THIS TO INSTALL A CUSTOM BOOT2.'''
'''/dev/boot2''' can be written to to install a new [[boot2]].{{check}} '''THIS HAS NOT BEEN VERIFIED, DO NOT RELY ON THIS TO INSTALL A CUSTOM BOOT2.'''


This accepts the following commands: open, close, read, write, seek, ioctl, ioctlv
This accepts the following commands: open, close, write, ioctl
 
IOCTL example:
 
14 ioctl(0,4,12 return -101)
 
ioctlv 4,12,14 last only in IOS56+


== /dev/boot2 IOS_Ioctl ==
== /dev/boot2 IOS_Ioctl ==
Line 17: Line 11:
! Description
! Description
|-
|-
| 1
| 1 or 2
| Nothing
| -
| Nothing
| -
| Possibly writes ECC data to the main copy of boot2?
| Writes the new blockmap for the newly written boot2
|-
|-
| 3
| 3
| 4 bytes: boot2 size
| 4 bytes: boot2 size
| Nothing
| -
| Seems to copy the main boot2 copy over to the backup copy. Generates ECC data a second time?
| Seems to copy the main boot2 copy over to the backup copy. Generates ECC data a second time?
|}
== /dev/boot2 IOS_Ioctlv ==
{| class="wikitable" style="margin: 1em auto 1em auto"
! style="vertical-align: top;" |number
! style="vertical-align: top;" |name
! style="vertical-align: top;" |in count
! style="vertical-align: top;" |out count
! style="vertical-align: top;" |vec entry target
! style="vertical-align: top;" |vec entry size [bytes]
! style="vertical-align: top;" |libogc prototype
! style="vertical-align: top;" |Description
|-
| style="vertical-align: top;" rowspan="3" |0xC
| style="vertical-align: top;" rowspan="3"  |?
| style="vertical-align: top;" rowspan="3"  |1
| style="vertical-align: top;" rowspan="3"  |2
| style="vertical-align: top;" |?
| style="vertical-align: top;" |0x40
| style="vertical-align: top;" rowspan="3"  |No
| style="vertical-align: top;" rowspan="3"  |?
|-
|?
|0x4
|-
|?
|0x4
|-
| style="vertical-align: top;" "rowspan="3" |0x4
| style="vertical-align: top;" "rowspan="3" |?
| style="vertical-align: top;" |1/2
| style="vertical-align: top;" |1/2
| style="vertical-align: top;" "rowspan="3" |?
| style="vertical-align: top;" "rowspan="3" |0x40
| style="vertical-align: top;" "rowspan="3" |No
| style="vertical-align: top;" "rowspan="3" |Can be used with 1 In and 1 Out or 2 In and 2
|-
|?
|0x4
|-
|? (only if you use 2 In/Out)(if this is 0 it is the same as use only 1 in and Out)
|0x4
|-
|? (only if you use 2 In/Out)
|Different each time(0xD* 2.in)
|-
| style="vertical-align: top;" |0xE
| style="vertical-align: top;" |?
| style="vertical-align: top;" |minimal 1
| style="vertical-align: top;" |0
| style="vertical-align: top;" |?
| style="vertical-align: top;" |?
| style="vertical-align: top;" |No
| style="vertical-align: top;" |?
|-
|}
|}


== /dev/boot2 error codes ==
== /dev/boot2 error codes ==


Note: POSIX is a standardized system that helps maintain compatibility between many different operating systems. So, each error code shown below has a given POSIX equivalent (not known yet). Other OS's many have different error code numbers, but if their POSIX equivalent is the same, they mean the same thing.
See also: [[:/dev/flash]]


{| class="wikitable"
{| class="wikitable"
|-
|-
! Error code
! Error code
! POSIX equivalent
! Notes
! Notes
|-
|-
| -101
| -4
| ?
| Invalid argument
| This can refer to: Invalid Wrong IN or OUT size, wrong size for a part of the vector, vector alignment problems, non-existant ioctl, or wrong structure.
|-
|-
|-
|-
| -102
| -5
| ?
| Open: Handle is already open
|  ?
Ioctl 3: Boot2 is too large, seemingly
|-|-
| -104
|  ?
|  ?
|-|-
| -106
|  ?
|  ?
|-|-
| -107
|  ?
|  ?
|-|-
| -108
|  ?
|  ?
|-
|-
|-
|-

Revision as of 05:05, 25 May 2025

This article is a stub. You can help WiiBrew by expanding it.

/dev/boot2 can be written to to install a new boot2.[check] THIS HAS NOT BEEN VERIFIED, DO NOT RELY ON THIS TO INSTALL A CUSTOM BOOT2.

This accepts the following commands: open, close, write, ioctl

/dev/boot2 IOS_Ioctl

Number In Out Description
1 or 2 - - Writes the new blockmap for the newly written boot2
3 4 bytes: boot2 size - Seems to copy the main boot2 copy over to the backup copy. Generates ECC data a second time?

/dev/boot2 error codes

See also: /dev/flash

Error code Notes
-4 Invalid argument
-5 Open: Handle is already open

Ioctl 3: Boot2 is too large, seemingly

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