forums.ps2dev.org

[Cpasjuste]

Hello, i would like to know if there is a way to change the attribute of a partition ?
I would like to change the slim partition 8 (currently with kernel attr it seems, 000C) to user attribute (000F).

I think moonlight already did this sort of thing in the past when the slim comes out, but i can't find any help from what i see in the sdk includes.

Any help would be greatly appreciated :)

[sauron_le_noir]

From a blog:
artition 8: (new in the psp slim!)

topaddr = 0x8A000000, size = 0x1C00000 (28 MB), attr = 0x0C

Partition 10: (new in psp slim!)

topaddr = 0x8BC00000, size = 0x400000 (4 MB), attr = 0x0C

So it seems at first the new partitions are for kernel mode use, but i guess they can be unlocked for user mode use with the SetDdrMemoryProtection function :)
===================================================================

from moonlight
Techincal stuff, the memory protection of te extra slim memory is in these hardware registers: 0xbc000040-0xbc00007F.

Set all to 0xFF, and you have access to it in user mode (note: sceKernelSetDdrMemoryProtection wouldn't do it)., but anyways is done automatically by m33 when launching homebrew, so no need to care about that.
===============================================================
and from 3.71M33 sdk
it seems Moonlight has incorporated the addition 32 MBytes to Malloc() when using his SDK for M33-3 (Looking at sample memory test).
===================================================================
hope that this help you

[Cpasjuste]

Hi sauron, thanks for the reply.

I think that setting this registers to 0xFF "just" allow access to this partition from user mode, what is done by the m33 firmware u think, but do not change the attribute.

What i want to do is load an user mode module to this partition, but it's currently impossible due to the fact that it has the kernel mode attributes.

Using the sceKernelSetDdrMemoryProtection function won't work too.

[Torch]

I don't think its possible to load a kernel module to user memory.

Also, if its even possible, while changing the partition to kernel, it should ideally be one contiguous block like what is done with the remaining 32MB in user mode. But it would have the 24MB user memory sandwiched between the first kernel partition.

[Cpasjuste]

[Torch]

[Cpasjuste]

I dont want to use the user memory at all :)

[Torch]