GBATests.c

#include "GBATests.h"
#include "CP15.h"
#include "Opcodes.h"
#include "MedianMeasurements.h"
#include "MemoryTimings.h"
#include "Menu.h"
#include <stdint.h>
#include <nds.h>
#include <stdio.h>
#include <stdbool.h>

static uint8_t GetCPUClockMultiplier() 
{
  return ((REG_SCFG_CLK & 1) + 1) * 2;
}

static void SetFastClock(bool set) 
{
  REG_SCFG_CLK = (REG_SCFG_CLK & ~1) | (set?1:0) ;
}


/* Run all GBA RAM Tests and dispay their result */
void RunGBARAMTests()
{
  EnableICache();
  EnableDCache();
  UnlockAllDCache() ;
  UnlockAllICache() ;
  
  SetFastClock(true);
  if (GetCPUClockMultiplier() == 4)
    CP15_SetRegion6(0x08000035); // 128MB

  sysSetCartOwner(true);  

  uint16_t exmemcnt_pre = REG_EXMEMCNT ;
  
  for (int i=0;i<4;i++)
  {

    consoleClear();
    iprintf("         GBA RAM Timings        ");
    iprintf("--------------------------------");  
    iprintf("\n\n");
    
    int16_t R08_133 = 0;
    int16_t R16_133 = 0;
    int16_t R16x2_133 = 0;
    int16_t R32_133 = 0;
    int16_t R32x2_133 = 0;

    int16_t R08_66 = 0;
    int16_t R16_66 = 0;
    int16_t R16x2_66 = 0;
    int16_t R32_66 = 0;
    int16_t R32x2_66 = 0;
    
    REG_EXMEMCNT = (exmemcnt_pre & ~0x883) | (i);
    iprintf("EXMEMCNT = %04x\n", REG_EXMEMCNT);
  
    iprintf("Measuring @ 133MHz ...\n");
    SetFastClock(true);
    if (GetCPUClockMultiplier() == 4)
    {
      R08_133 = MeasureDataAccess(0x0A000000, DATAACCESS_READ | DATAACCESS_8) * GetCPUClockMultiplier() / 4;
      iprintf(" 8b   Reads: %i\n", R08_133);
      R16_133 = MeasureDataAccess(0x0A000000, DATAACCESS_READ | DATAACCESS_16) * GetCPUClockMultiplier() / 4;
      iprintf("16b   Reads: %i\n", R16_133);
      R16x2_133 = MeasureDataAccess(0x0A000000, DATAACCESS_READ | DATAACCESS_16x2) * GetCPUClockMultiplier() / 4;
      iprintf("16bx2 Reads: %i\n", R16x2_133);
      R32_133 = MeasureDataAccess(0x0A000000, DATAACCESS_READ | DATAACCESS_32) * GetCPUClockMultiplier() / 4;
      iprintf("32b   Reads: %i\n", R32_133);
      R32x2_133 = MeasureDataAccess(0x0A000000, DATAACCESS_READ | DATAACCESS_64) * GetCPUClockMultiplier() / 4;
      iprintf("32bx2 Reads: %i\n", R32x2_133);
    } else
    {
      iprintf("133MHz not available (DS?)\n");
    }
    iprintf("Measuring @ 66MHz ...\n");
    SetFastClock(false);
    if (GetCPUClockMultiplier() == 2)
    {
      R08_66 = MeasureDataAccess(0x0A000000, DATAACCESS_READ | DATAACCESS_8) * GetCPUClockMultiplier() / 4;
      iprintf(" 8b   Reads: %i\n", R08_66);
      R16_66 = MeasureDataAccess(0x0A000000, DATAACCESS_READ | DATAACCESS_16) * GetCPUClockMultiplier() / 4;
      iprintf("16b   Reads: %i\n", R16_66);
      R16x2_66 = MeasureDataAccess(0x0A000000, DATAACCESS_READ | DATAACCESS_16x2) * GetCPUClockMultiplier() / 4;
      iprintf("16bx2 Reads: %i\n", R16x2_66);
      R32_66 = MeasureDataAccess(0x0A000000, DATAACCESS_READ | DATAACCESS_32) * GetCPUClockMultiplier() / 4;
      iprintf("32b   Reads: %i\n", R32_66);
      R32x2_66 = MeasureDataAccess(0x0A000000, DATAACCESS_READ | DATAACCESS_64) * GetCPUClockMultiplier() / 4;
      iprintf("32bx2 Reads: %i\n", R32x2_66);
    } else
    {
      iprintf("66MHz not available (unknown HW)\n");
    }
    SetFastClock(true);  
    
    consoleClear();
    iprintf("         GBA RAM Timings        ");
    iprintf("--------------------------------");  
    iprintf("\n");
    iprintf("EXMEMCNT = %04x\n\n", REG_EXMEMCNT);
    iprintf("as CPU-Cycles\n\n");
    iprintf("        N16   S16   N32   S32\n");
    iprintf(" 66Mhz  %3i   %3i   %3i   %3i\n", R16_66, (R16_66 - 2 *(R16_66-R16x2_66)), R32_66, R32x2_66-R32_66);
    iprintf("133Mhz  %3i   %3i   %3i   %3i\n", R16_133, (R16_133 - 2 *(R16_133-R16x2_133)), R32_133, R32x2_133-R32_133);

    iprintf("\n\n");
    iprintf("as Bus-Cycles\n\n");
    iprintf("        N16   S16   N32   S32\n");
    iprintf(" 66Mhz  %3i   %3i   %3i   %3i\n", R16_66 / 2, (R16_66 - 2 *(R16_66-R16x2_66)) / 2, R32_66 / 2, (R32x2_66-R32_66) / 2);
    iprintf("133Mhz  %3i   %3i   %3i   %3i\n", R16_133 / 4, (R16_133 - 2 *(R16_133-R16x2_133)) / 4, R32_133 / 4, (R32x2_133-R32_133) / 4);
  
    WaitForAnyKey();
  }
}

/* Run all GBA ROM Tests and dispay their result */
void RunGBAROMTests()
{
  EnableICache();
  EnableDCache();
  UnlockAllDCache() ;
  UnlockAllICache() ;

  CP15_SetRegion3(0x08000035); // 128MB

  sysSetCartOwner(true);  

  uint16_t exmemcnt_pre = REG_EXMEMCNT ;
  
  for (int i=0;i<8;i++)
  {
    consoleClear();
    iprintf("         GBA ROM Timings        ");
    iprintf("--------------------------------");  
    iprintf("\n\n");
    
    int16_t R08_133 = 0;
    int16_t R16_133 = 0;
    int16_t R16x2_133 = 0;
    int16_t R32_133 = 0;
    int16_t R32x2_133 = 0;

    int16_t R08_66 = 0;
    int16_t R16_66 = 0;
    int16_t R16x2_66 = 0;
    int16_t R32_66 = 0;
    int16_t R32x2_66 = 0;  
  
    REG_EXMEMCNT = (exmemcnt_pre & ~0x89F) | (i << 2);
    iprintf("EXMEMCNT = %04x\n", REG_EXMEMCNT);
  
    iprintf("Measuring @ 133MHz ...\n");
    SetFastClock(true);
    if (GetCPUClockMultiplier() == 4)
    {
      R08_133 = MeasureDataAccess(0x08000000, DATAACCESS_READ | DATAACCESS_8) * GetCPUClockMultiplier() / 4;
      iprintf(" 8b   Reads: %i\n", R08_133);
      R16_133 = MeasureDataAccess(0x08000000, DATAACCESS_READ | DATAACCESS_16) * GetCPUClockMultiplier() / 4;
      iprintf("16b   Reads: %i\n", R16_133);
      R16x2_133 = MeasureDataAccess(0x08000000, DATAACCESS_READ | DATAACCESS_16x2) * GetCPUClockMultiplier() / 4;
      iprintf("16bx2 Reads: %i\n", R16x2_133);
      R32_133 = MeasureDataAccess(0x08000000, DATAACCESS_READ | DATAACCESS_32) * GetCPUClockMultiplier() / 4;
      iprintf("32b   Reads: %i\n", R32_133);
      R32x2_133 = MeasureDataAccess(0x08000000, DATAACCESS_READ | DATAACCESS_64) * GetCPUClockMultiplier() / 4;
      iprintf("32bx2 Reads: %i\n", R32x2_133);
    } else
    {
      iprintf("133MHz not available (DS?)\n");
    }
    iprintf("Measuring @ 66MHz ...\n");
    SetFastClock(false);
    if (GetCPUClockMultiplier() == 2)
    {
      R08_66 = MeasureDataAccess(0x08000000, DATAACCESS_READ | DATAACCESS_8) * GetCPUClockMultiplier() / 4;
      iprintf(" 8b   Reads: %i\n", R08_66);
      R16_66 = MeasureDataAccess(0x08000000, DATAACCESS_READ | DATAACCESS_16) * GetCPUClockMultiplier() / 4;
      iprintf("16b   Reads: %i\n", R16_66);
      R16x2_66 = MeasureDataAccess(0x08000000, DATAACCESS_READ | DATAACCESS_16x2) * GetCPUClockMultiplier() / 4;
      iprintf("16bx2 Reads: %i\n", R16x2_66);
      R32_66 = MeasureDataAccess(0x08000000, DATAACCESS_READ | DATAACCESS_32) * GetCPUClockMultiplier() / 4;
      iprintf("32b   Reads: %i\n", R32_66);
      R32x2_66 = MeasureDataAccess(0x08000000, DATAACCESS_READ | DATAACCESS_64) * GetCPUClockMultiplier() / 4;
      iprintf("32bx2 Reads: %i\n", R32x2_66);
    } else
    {
      iprintf("66MHz not available (unknown HW)\n");
    }
    SetFastClock(true);  
  
    consoleClear();
    iprintf("         GBA ROM Timings        ");
    iprintf("--------------------------------");  
    iprintf("\n");
    iprintf("EXMEMCNT = %04x\n\n", REG_EXMEMCNT);
    iprintf("as CPU-Cycles\n\n");
    iprintf("        N16   S16   N32   S32\n");
    iprintf(" 66Mhz  %3i   %3i   %3i   %3i\n", R16_66, (R16_66 - 2 *(R16_66-R16x2_66)), R32_66, R32x2_66-R32_66);
    iprintf("133Mhz  %3i   %3i   %3i   %3i\n", R16_133, (R16_133 - 2 *(R16_133-R16x2_133)), R32_133, R32x2_133-R32_133);

    iprintf("\n\n");
    iprintf("as Bus-Cycles\n\n");
    iprintf("        N16   S16   N32   S32\n");
    iprintf(" 66Mhz  %3i   %3i   %3i   %3i\n", R16_66 / 2, (R16_66 - 2 *(R16_66-R16x2_66)) / 2, R32_66 / 2, (R32x2_66-R32_66) / 2);
    iprintf("133Mhz  %3i   %3i   %3i   %3i\n", R16_133 / 4, (R16_133 - 2 *(R16_133-R16x2_133)) / 4, R32_133 / 4, (R32x2_133-R32_133) / 4);
  
    WaitForAnyKey();
  }
}