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PSP Slim RAM partitions
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Cpasjuste



Joined: 29 May 2005
Posts: 214
PostPosted: Mon Sep 24, 2007 9:00 am    Post subject: Reply with quote
Yep its really cool :)

The main problem now is to rewrite all the code of most of my homebrews :/ I still can't understand some strange things while coding for the 3.71, sometime a function work, i remove a printf then nothing work anymore. I have a lot of strange things like this.
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mypspdev



Joined: 11 Jul 2007
Posts: 178
PostPosted: Thu Oct 04, 2007 5:34 pm    Post subject: Reply with quote
Is anybody updating this page
http://wiki.ps2dev.org/psp:memory_map
on RAM partion for S&L too?

Thanks, by best to all
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moonlight



Joined: 26 Oct 2005
Posts: 567
PostPosted: Thu Oct 04, 2007 9:57 pm    Post subject: Reply with quote
mypspdev wrote:
Is anybody updating this page
http://wiki.ps2dev.org/psp:memory_map
on RAM partion for S&L too?

Thanks, by best to all


And they shouldn't call "kernel partition" to the volatile one too :p
User modules can be loaded there while kernel ones can't, so it is not definitely an appropiate name.
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mypspdev



Joined: 11 Jul 2007
Posts: 178
PostPosted: Wed Oct 17, 2007 1:29 am    Post subject: Reply with quote
I'm trying to investigate on, just as an exercise:

Code:
void check_RAM()
{
   int i;
   PspSysmemPartitionInfo pinfo;
   for(i = 0; i < 6; i++)
   {
      memset(&pinfo, 0, sizeof(pinfo));
      pinfo.size = sizeof(pinfo);
      sceKernelQueryMemoryPartitionInfo(i + 1, &pinfo);
      printf( "%u  0x%08x  0x%08x  0x%08x 0x%08x 0x%x", i + 1, pinfo.memsize, pinfo.startaddr, sceKernelPartitionTotalFreeMemSize (i + 1), sceKernelPartitionMaxFreeMemSize (i + 1), pinfo.attr);
   }
}


But it doesn't work properly.

Could please anyone check whet's wrong? thanks in advance
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mypspdev



Joined: 11 Jul 2007
Posts: 178
PostPosted: Wed Oct 17, 2007 6:52 am    Post subject: Reply with quote
Solved:

#step 1 Create a prx under 1.50 kernel

Code:
#include <pspsdk.h>
#include <pspkernel.h>
#include <pspctrl.h>
#include <string.h>
#include <pspsysmem_kernel.h>


PSP_MODULE_INFO("MyRAMPRX", 0x1006, 1, 1);
PSP_MAIN_THREAD_ATTR(0);


int PTotFreeMemSize(int i)
{
   u32 k1;
       k1 = pspSdkSetK1(0);
   int pttfms=sceKernelPartitionTotalFreeMemSize(i);
   pspSdkSetK1(k1);
   return pttfms;
}

int PMaxFreeMemSize(int i)
{
   u32 k1;
       k1 = pspSdkSetK1(0);
   int ptmfms=sceKernelPartitionMaxFreeMemSize(i);
   pspSdkSetK1(k1);
   return ptmfms;
}

PspSysmemPartitionInfo RAMpinfo(int i)
{
   u32 k1;
       k1 = pspSdkSetK1(0);
   PspSysmemPartitionInfo pinfo;

   memset(&pinfo, 0, sizeof(pinfo));
   pinfo.size = sizeof(pinfo);
   sceKernelQueryMemoryPartitionInfo(i, &pinfo);

   pspSdkSetK1(k1);
   return pinfo;
}


int module_start(SceSize args, void *argp)
{
   return 0;
}

int module_stop()
{
   return 0;
}


#step 2: create a main program 3.xx calling RAMprx:

Code:
#include <pspsdk.h>
#include <pspkernel.h>
#include <pspctrl.h>
#include <string.h>
#include <pspsysmem_kernel.h>

PSP_MODULE_INFO("MyRAMPRXLoader", 0, 1, 0);
PSP_MAIN_THREAD_ATTR(THREAD_ATTR_USER);
PSP_HEAP_SIZE_KB(2500);

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Functions imported from prx:
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
int PMaxFreeMemSize(int i);
int PTotFreeMemSize(int i);
PspSysmemPartitionInfo RAMpinfo(int i);

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Globals:
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Main:
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
int main(){
   SceUID modid;

   pspDebugScreenInit();

      
   pspDebugScreenPrintf("Eboot test\n");

   modid = pspSdkLoadStartModule("MyRAMPRX.prx", PSP_MEMORY_PARTITION_KERNEL);
   if (modid < 0){
      pspDebugScreenPrintf("Error 0x%08X loading/starting MyRAMPRX.prx.\n", modid);
        sceKernelDelayThread(5*1000*1000);
        return -1;
   }

   pspDebugScreenPrintf("Module ID %08X\n", modid);
   int i=0;
   for (i=1;i<7;i++)
   {
      int k=PTotFreeMemSize(i);
      pspDebugScreenPrintf("Total Free Mem Size - Partition %u 0x%08x  ", i, k);
      pspDebugScreenPrintf(" \n");
      int pmfms=PMaxFreeMemSize(i);
      pspDebugScreenPrintf("Max Free Mem Size - Partition %u 0x%08x  ",i , pmfms);
      pspDebugScreenPrintf(" \n");
      PspSysmemPartitionInfo pinfo;
      pinfo=RAMpinfo(i);
      pspDebugScreenPrintf( "Partition %u - memsize: 0x%08x start addr: 0x%08x attr: 0x%x",  i, pinfo.memsize, pinfo.startaddr, pinfo.attr);
      pspDebugScreenPrintf(" \n");
   }

      pspDebugScreenPrintf("Press X to quit\n");


      SceCtrlData pad;
      while(1){
      sceCtrlReadBufferPositive(&pad, 1);
      if (pad.Buttons & PSP_CTRL_CROSS){
          break;
      }
      }
   sceKernelExitGame();
      return 0;
}
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cloudhunter



Joined: 17 Aug 2006
Posts: 86
PostPosted: Wed Oct 17, 2007 8:16 am    Post subject: Reply with quote
Quote:
#step 1 Create a prx under 1.50 kernel


I'm no expert, but that is incorrect. I believe you actually make a kernel mode prx.

Cloudy
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J.F.



Joined: 22 Feb 2004
Posts: 2906
PostPosted: Wed Oct 17, 2007 10:37 am    Post subject: Reply with quote
cloudhunter wrote:
Quote:
#step 1 Create a prx under 1.50 kernel


I'm no expert, but that is incorrect. I believe you actually make a kernel mode prx.

Cloudy


Yes. Running in kernel mode does not necessarily mean 1.50 firmware. :)
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mypspdev



Joined: 11 Jul 2007
Posts: 178
PostPosted: Wed Oct 17, 2007 4:52 pm    Post subject: Reply with quote
I apologize for used terminology, but finally it works fine: I have RAM Partition info from Fat and S&L.
It was impossible to do it within 3.xx I needed the prx to be called.
If anybody wants zip file, it's available.
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J.F.



Joined: 22 Feb 2004
Posts: 2906
PostPosted: Wed Oct 17, 2007 4:55 pm    Post subject: Reply with quote
Well, it stands to reason that those functions would need to be called from kernel mode seeing as how they return info about kernel mode partitions. They aren't about to give you that info in user mode. :)
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