293 lines
8.0 KiB
C
293 lines
8.0 KiB
C
#include "dip.h"
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u32 StreamBufferSize= 54*1024;
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u32 Streaming = 0;
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u32 StreamOffset = 0;
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u32 StreamDiscOffset= 0;
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s32 StreamSize = 0;
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u32 StreamRAMOffset = 0;
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u32 StreamTimer = 0;
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u32 StreamStopEnd = 0;
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u32 GameRun = 0;
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u32 DOLMinOff = 0;
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u32 DOLMaxOff = 0;
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u32 DOLSize = 0;
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u32 DOLOffset = 0;
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s32 ELFNumberOfSections = 0;
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u32 FSTMode = 0;
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FIL GameFile;
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u32 read;
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u32 DiscRead=0;
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char *getfilenamebyoffset(u32 offset)
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{
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u32 fst_offset = read32(0x38) & ~0x80000000;
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u32 i;
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for (i = fst_offset + 12; i < 0x01800000; i+=12)
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{
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if (read8(i) == 0 && offset >= read32(i + 4) && offset < read32(i + 4) + read32(i + 8))
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{
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return (char *)(fst_offset + read32(fst_offset+8)*12 + (read32(i) & 0x00ffffff));
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}
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}
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return (char*)NULL;
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}
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void DIInit( void )
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{
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memset32( (void*)DI_BASE, 0xdeadbeef, 0x30 );
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memset32( (void*)(DI_SHADOW), 0, 0x30 );
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write32( DI_SCONFIG, 0xFF );
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write32( DI_SCOVER, 0 );
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}
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u32 DIUpdateRegisters( void )
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{
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u32 read,i,j;
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static u32 PatchState = 0;
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static u32 DOLReadSize= 0;
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if( read32(DI_CONTROL) != 0xdeadbeef )
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{
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write32( DI_SCONTROL, read32(DI_CONTROL) & 3 );
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clear32( DI_SSTATUS, 0x14 );
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write32( DI_CONTROL, 0xdeadbeef );
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if( read32(DI_SCONTROL) & 1 )
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{
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if( ConfigGetConfig(DML_CFG_ACTIVITY_LED) )
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set32( HW_GPIO_OUT, 1<<5 );
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if( read32(DI_CMD_0) != 0xdeadbeef )
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{
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write32( DI_SCMD_0, read32(DI_CMD_0) );
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write32( DI_CMD_0, 0xdeadbeef );
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}
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if( read32(DI_CMD_1) != 0xdeadbeef )
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{
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write32( DI_SCMD_1, read32(DI_CMD_1) );
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write32( DI_CMD_1, 0xdeadbeef );
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}
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if( read32(DI_CMD_2) != 0xdeadbeef )
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{
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write32( DI_SCMD_2, read32(DI_CMD_2) );
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write32( DI_CMD_2, 0xdeadbeef );
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}
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if( read32(DI_DMA_ADR) != 0xdeadbeef )
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{
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write32( DI_SDMA_ADR, read32(DI_DMA_ADR) );
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write32( DI_DMA_ADR, 0xdeadbeef );
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}
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if( read32(DI_DMA_LEN) != 0xdeadbeef )
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{
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write32( DI_SDMA_LEN, read32(DI_DMA_LEN) );
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write32( DI_DMA_LEN, 0xdeadbeef );
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}
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if( read32(DI_IMM) != 0xdeadbeef )
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{
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write32( DI_SIMM, read32(DI_IMM) );
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write32( DI_IMM, 0xdeadbeef );
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}
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switch( read32(DI_SCMD_0) >> 24 )
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{
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case 0xA7:
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case 0xA9:
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//dbgprintf("DIP:Async!\n");
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case 0xA8:
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{
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u32 Buffer = P2C(read32(DI_SDMA_ADR));
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u32 Length = read32(DI_SCMD_2);
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u32 Offset = read32(DI_SCMD_1) << 2;
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// dbgprintf("DIP:DVDRead%02X( 0x%08x, 0x%08x, 0x%08x )\n", read32(DI_SCMD_0) >> 24, Offset, Length, Buffer|0x80000000 );
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// udelay(250);
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if( FSTMode )
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{
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FSTRead( (char*)Buffer, Length, Offset );
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} else {
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if( GameFile.fptr != Offset )
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if( f_lseek( &GameFile, Offset ) != FR_OK )
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{
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EXIControl(1);
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dbgprintf("DIP:Failed to seek to 0x%08x\n", Offset );
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while(1);
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}
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if( f_read( &GameFile, (char*)Buffer, Length, &read ) != FR_OK )
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{
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EXIControl(1);
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dbgprintf("DIP:Failed to read from 0x%08x to 0x%08X\n", Offset, Buffer );
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while(1);
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}
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}
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//if( ((read+31)&(~31)) != Length )
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//{
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// dbgprintf("DIP:DVDLowRead Offset:%08X Size:%08d Dst:%08X\n", Offset, Length, Buffer );
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// dbgprintf("DIP:Failed to read %d bytes, only got %d\n", Length, read );
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// break;
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//}
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if( (u32)Buffer == 0x01300000 )
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{
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DoPatches( (char*)(0x01300000), Length, 0x80000000 );
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}
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if( PatchState == 0 )
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{
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if( Length == 0x100 )
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{
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if( read32( (u32)Buffer ) == 0x100 )
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{
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//quickly calc the size
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DOLSize = sizeof(dolhdr);
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dolhdr *dol = (dolhdr*)Buffer;
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for( i=0; i < 7; ++i )
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DOLSize += dol->sizeText[i];
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for( i=0; i < 11; ++i )
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DOLSize += dol->sizeData[i];
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DOLReadSize = sizeof(dolhdr);
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DOLMinOff=0x81800000;
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DOLMaxOff=0;
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for( i=0; i < 7; ++i )
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{
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if( dol->addressText[i] == 0 )
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continue;
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if( DOLMinOff > dol->addressText[i])
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DOLMinOff = dol->addressText[i];
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if( DOLMaxOff < dol->addressText[i] + dol->sizeText[i] )
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DOLMaxOff = dol->addressText[i] + dol->sizeText[i];
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}
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DOLMinOff -= 0x80000000;
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DOLMaxOff -= 0x80000000;
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dbgprintf("DIP:DOLSize:%d DOLMinOff:0x%08X DOLMaxOff:0x%08X\n", DOLSize, DOLMinOff, DOLMaxOff );
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PatchState = 1;
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}
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} else if( read32(Buffer) == 0x7F454C46 )
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{
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if (getfilenamebyoffset(Offset) != NULL)
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{
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dbgprintf("DIP:The Game is loading %s\n", getfilenamebyoffset(Offset));
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} else
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{
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dbgprintf("DIP:The Game is loading some .elf that is not in the fst...\n");
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}
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for (i = ((*(u32 *)0x00000038) & ~0x80000000) + 16; i < 0x01800000; i+=12) // Search the fst for the dvd offset of the .elf file
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{
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if (*(u32 *)i == Offset)
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{
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DOLSize = *(u32 *)(i+4);
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DOLReadSize = Length;
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if( DOLReadSize == DOLSize ) // The .elf is read completely already
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{
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dbgprintf("DIP:The .elf is read completely, file size: %u bytes\n", DOLSize);
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DoPatches( (char*)(Buffer), Length, 0x80000000 );
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} else // a part of the .elf is read
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{
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PatchState = 2;
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DOLMinOff=Buffer;
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DOLMaxOff=Buffer+Length;
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if (Length <= 4096) // The .elf header is read
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{
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ELFNumberOfSections = read16(Buffer+0x2c) -2; // Assume that 2 sections are .bss and .sbss which are not read
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dbgprintf("DIP:The .elf header is read(%u bytes), .elf file size: %u bytes, number of sections to load: %u\n", Length, DOLSize, ELFNumberOfSections);
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} else // The .elf is read into a buffer
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{
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ELFNumberOfSections = -1; // Make sure that ELFNumberOfSections == 0 does not become true
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dbgprintf("DIP:The .elf is read into a buffer, read progress: %u/%u bytes\n", Length, DOLSize);
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}
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}
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break;
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}
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}
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}
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} else if ( PatchState != 0 )
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{
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DOLReadSize += Length;
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if (PatchState == 2)
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{
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ELFNumberOfSections--;
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// DOLMinOff and DOLMaxOff are optimised when loading .dol files
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if (DOLMinOff > Buffer)
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DOLMinOff = Buffer;
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if (DOLMaxOff < Buffer+Length)
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DOLMaxOff = Buffer+Length;
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if (ELFNumberOfSections < 0)
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{
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dbgprintf("DIP:.elf read progress: %u/%u bytes\n", DOLReadSize, DOLSize);
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} else
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{
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dbgprintf("DIP:.elf read progress: %u/%u bytes, sections left: %u\n", DOLReadSize, DOLSize, ELFNumberOfSections);
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}
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}
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//dbgprintf("DIP:DOLSize:%d DOLReadSize:%d\n", DOLSize, DOLReadSize );
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if( DOLReadSize >= DOLSize || (PatchState == 2 && ELFNumberOfSections == 0))
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{
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DoPatches( (char*)(DOLMinOff), DOLMaxOff-DOLMinOff, 0x80000000 );
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PatchState = 0;
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}
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}
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write32( DI_SDMA_LEN, 0 );
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while( read32(DI_SCONTROL) & 1 )
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clear32( DI_SCONTROL, 1 );
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set32( DI_SSTATUS, 0x3A );
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if( (read32(DI_SCMD_0) >> 24) == 0xA7 )
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{
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write32( 0x0d80000C, (1<<0) | (1<<4) );
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write32( HW_PPCIRQFLAG, read32(HW_PPCIRQFLAG) );
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write32( HW_ARMIRQFLAG, read32(HW_ARMIRQFLAG) );
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set32( 0x0d80000C, (1<<2) );
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}
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} break;
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default:
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{
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EXIControl(1);
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dbgprintf("DIP:Unknown CMD:%08X %08X %08X %08X %08X %08X\n", read32(DI_SCMD_0), read32(DI_SCMD_1), read32(DI_SCMD_2), read32(DI_SIMM), read32(DI_SDMA_ADR), read32(DI_SDMA_LEN) );
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while(1);
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} break;
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}
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if( ConfigGetConfig(DML_CFG_ACTIVITY_LED) )
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clear32( HW_GPIO_OUT, 1<<5 );
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return 1;
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} else {
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;//dbgprintf("DIP:DI_CONTROL:%08X:%08X\n", read32(DI_CONTROL), read32(DI_CONTROL) );
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}
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}
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return 0;
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}
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