Porting homebrew to 4.xx kernels.

[Ryu]

http://alek.dark-alex.org/index.php?itemid=158

Originally Posted by Alek

As we spoke some days ago here, 1.50 kernel would probably disappear. Therefore, we spoke about migrating homebrews to 3.xx kernels, and i linked to this post on ps2dev.

So, what's new when porting to 4.xx kernels instead of 3.xx ones? Following the same guide as CpuWhiz on his post;


1. Homebrew must be in prx format. To do that, after the PSPSDK includes (include $(PSPSDK)/lib/build.mak), add this two lines:

BUILD_PRX = 1
PSP_FW_VERSION = 401

The last line (PSP_FW_VERSION) isn't really needed in this case, just for the compilation when making #ifdef branches or not; but as 4.00/4.01 hasn't included anything relevant on that affairs, you can skip that line.


2. Homebrew must be in user mode. On your main.c code, for the proper pbp compilation,

PSP_MODULE_INFO("module1", 0, 1, 0);

Remember that the PSP_MODULE_INFO system goes like this -> PSP_MODULE_INFO("module_name", mode, mayor_revision, minor_revision), and we put an "0" on mode for user mode; meanwhile 0x1000 would be for kernel mode. And also, add this line;

PSP_HEAP_SIZE_MAX();

Considering that you have a newer PSPSDK that can compile within it.


3. That would be enough for what it takes. Got any problem within running it, once compiled? Re-check latest steps from that ps2dev post to check for your kernel calls.

So, to sum up, due to the poor changes from 3.xx to 4.00/4.01, you just need to keep on the prx format, AND the user mode on the pbp code. Probably some of you already knew this, but bleh, this can't be bad to have in mind, as one user commented on the "Bye Bye, 1.50" post.

[RazorChrist]

Coo, thanks :twothumbs:

[pirata nervo]

yeh it's the same as 1.50 -> 3.xx

[hardhat]

I've had a lot of troubles using PSP_HEAP_SIZE_MAX(); and so these days I'm more inclined to use PSP_KEAP_SIZE_KB(20480); or similar. It really matters the most if you are loading extra PRXes for things like networking, hardware MP3 playback, etc.

[pirata nervo]

PSP_HEAP_SIZE_KB +positive does not work for me, neither PSP_HEAP_SIZE -negative
I am trying to solve this problem while talking to J.F.