forums.ps2dev.org

[cp25stack]

I am trying to port my homebrew from 1.5 to run in 3.x custom firmware. I follow the method of CpuWhiz on this thread (http://forums.ps2dev.org/viewtopic.php?p=59285&sid=a421ca097c5c1ad8221d2c96f9268c1e)
- Add this 2 line into make file before include..
BUILD_PRX = 1
PSP_FW_VERSION = 371
- use only user mode in main
PSP_MODULE_INFO("My Homebrew", 0, 1, 0);
PSP_HEAP_SIZE_KB(20480);
- bring the EBOOT.PBP to run in 3.x
dont use kxploit or % folder

But it doesn't work for me.
After start my homebrew, i got error message
"The game could not be started" 80020148

Is there another thing to do to compile my source to run for 3.x version? or i miss something

[J.F.]

Make sure to use the USER thread attribute in main as well, and get rid of any kernel level calls. Calls that can only be made from kernel mode have to be moved into an external prx as shown in a number of threads in this forum.

[cp25stack]

ok
i am just a stupid one...

So,these are all the kernel thread that cant use in 3.xx isn't it
sceKernelExitGame()
sceKernelCreateCallback
sceKernelRegisterExitCallback
sceKernelSleepThreadCB
sceKernelStartThread

but if it yes,
shouldn't it give me an error number 0x8002013C isn't it?
however i should know that those function is kernel call. T T

[cp25stack]

?
even i try to build this simplest hello world program
it still give me the same error code
(copy form ZX)

Does anyone have idea what happen?
i feel like that it should be something wrong...

main.c
==============================================
#include <pspdebug.h>
#include <pspsdk.h>

PSP_MODULE_INFO("MyNameIs", 0x0, 1, 1);
PSP_MAIN_THREAD_ATTR(0);

int
main(int argc, char *argv[])
{
return 0;
}
==============================================

makefile
==============================================
TARGET = MyNameIsFW3x
OBJS = main.o

INCDIR =
CFLAGS = -O2 -G0 -Wall


CXXFLAGS = $(CFLAGS) -fno-exceptions -fno-rtti
ASFLAGS = $(CFLAGS)

BUILD_PRX=1
PSP_FW_VERSION=340

LIBDIR =
LDFLAGS =

EXTRA_TARGETS = EBOOT.PBP
PSP_EBOOT_TITLE = MyNameIsFW3x

PSPSDK=$(shell psp-config --pspsdk-path)
include $(PSPSDK)/lib/build.mak
==============================================

[cp25stack]

errkk

Finally, i can build hello world to run on 3.xx CFW.
from above code, i just trun off these two lines.

BUILD_PRX=1
PSP_FW_VERSION=340

I know it may sound strange to the way we understand
that we should set BUILD_PRX to be on...
But may be it is my toolchain that has some strange setting. dont know? :(

[jas0nuk]

Well, removing BUILD_PRX is compiling it as a static user ELF, which is working because the firmware is patched to accept those. You probably didn't port it well enough to work as a PRX :P

[J.F.]

You really haven't looked at ANY of the sample code, have you? Look at any 3.xx app and you'll see this line in main:

[dot_blank]

PSP_HEAP_SIZE_KB(20480); // too much heap
_________________
10011011 00101010 11010111 10001001 10111010

[cp25stack]

Hi
At first, i accepted that didn't look at any of sample code for 3.xx before.
(because i can't fine anyone at that time)
The only one clue that i found is the link in the first post that CpuWhiz
describe about how to port code from 1.5 to 3.x.
As i can understand it is only use usermode in PSP_MODULE_INFO()
and set BUILD_PRX = 1 in make file.
not thing mention about PSP_MAIN_THREAD_ATTR.

Then after many fail to run, i can found the hello world demo for 3.x
(from zx as i post in the secone post, but i change it a littlebit).
But it doesn't work for me too until i remove the line "BUILD_PRX=1".
I dont know what to say that why just those 3-4 lines of code cannot work?
(It has both PSP_MAIN_THREAD_ATTR = user and BUILD_PRX=1 already)

So if it possible, can anyone please give a link or demo of helloworld with makefile
that can suddenly+instant build and run on 3.x please.

PS. for hornesty, i didn't want to blame anyone.I just want to find out the mystery that i found. :)

[J.F.]

There are a BUNCH of threads in this forum on doing 3.xx homebrew. If you would bother to use search and read old threads, you wouldn't need to start yet another thread on this.

[cp25stack]

Ah.. i should know that requesting for something too easy is not
proper in the professional board like this.
But what is the point of the replies like...
"didn't you never read any code, have you try to search?"
It seems like just reply without read the previous posts, situation :(


back to the topic
At first the thread that i had found tell me that..
(http://forums.ps2dev.org/viewtopic.php?p=59285&sid=a421ca097c5c1ad8221d2c96f9268c1e)
==============================================
"3.xx firmwares require your homebrew be in prx format. To get your homebrew in this format, you need to follow a few basic steps:...."
==============================================
It clear to me that i must set BUILD_PRX to 1.
But now J.F. said..
==============================================
"BUILD_PRX=1 is needed if you plan to load external prx libraries which do kernel mode calls. Otherwise, you don't need that."
==============================================
Those info seem to be conflict.
However, as the result of my trial and error, it seems the the later info is right.

Should anyone go back to post/edit that info into the above thread.
I think that is the popular one that can found easily when search about this topic.

[J.F.]