/dev/boot2: Difference between revisions
< /dev
Hallowizer (talk | contribs) →/dev/boot2 IOS_Ioctl: added in and out columns |
Hallowizer (talk | contribs) →/dev/boot2 IOS_Ioctl: more ideas on these ioctls (I think 3 is certain now) |
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| Nothing | | Nothing | ||
| Nothing | | Nothing | ||
| Possibly writes | | Possibly writes ECC data to the main copy of boot2? | ||
|- | |- | ||
| 3 | | 3 | ||
| 4 bytes: boot2 size | | 4 bytes: boot2 size | ||
| Nothing | | Nothing | ||
| | | Seems to copy the main boot2 copy over to the backup copy. Generates ECC data a second time? | ||
|} | |} | ||
Revision as of 07:48, 6 March 2022
| This article is a stub. You can help WiiBrew by expanding it. |
/dev/boot2 can presumably be written to to install a new boot2. 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
IOCTL example:
14 ioctl(0,4,12 return -101)
ioctlv 4,12,14 last only in IOS56+
/dev/boot2 IOS_Ioctl
| Number | In | Out | Description |
|---|---|---|---|
| 1 | Nothing | Nothing | Possibly writes ECC data to the main copy of boot2? |
| 3 | 4 bytes: boot2 size | Nothing | Seems to copy the main boot2 copy over to the backup copy. Generates ECC data a second time? |
/dev/boot2 IOS_Ioctlv
| number | name | in count | out count | vec entry target | vec entry size [bytes] | libogc prototype | Description |
|---|---|---|---|---|---|---|---|
| 0xC | ? | 1 | 2 | ? | 0x40 | No | ? |
| ? | 0x4 | ||||||
| ? | 0x4 | ||||||
| 0x4 | ? | 1/2 | 1/2 | ? | 0x40 | No | 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) | ||||||
| 0xE | ? | minimal 1 | 0 | ? | ? | No | ? |
/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.
| Error code | POSIX equivalent | Notes |
|---|---|---|
| -101 | ? | 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 | ? | ? |
| -104 | ? | ? |
| -106 | ? | ? |
| -107 | ? | ? |
| -108 | ? | ? |