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Merge pull request #2093 from magumagu/gc-bios-hack 

Hack around our terrible GC BIOS emulation.
This commit is contained in:
skidau 2015-02-24 13:11:25 +11:00
parent b8edd8aedc 97b7f26d58
commit bf61abf22b
1 changed files with 20 additions and 1 deletions
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21
Source/Core/Core/Boot/Boot.cpp
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@ -188,9 +188,28 @@ bool CBoot::Load_BS2(const std::string& _rBootROMFilename)
// Run the descrambler over the encrypted section containing BS1/BS2 // Run the descrambler over the encrypted section containing BS1/BS2
CEXIIPL::Descrambler((u8*)data.data()+0x100, 0x1AFE00); CEXIIPL::Descrambler((u8*)data.data()+0x100, 0x1AFE00);
// TODO: Execution is supposed to start at 0xFFF00000, not 0x81200000;
// copying the initial boot code to 0x81200000 is a hack.
// For now, HLE the first few instructions and start at 0x81200150
// to work around this.
Memory::CopyToEmu(0x01200000, data.data() + 0x100, 0x700); Memory::CopyToEmu(0x01200000, data.data() + 0x100, 0x700);
Memory::CopyToEmu(0x01300000, data.data() + 0x820, 0x1AFE00); Memory::CopyToEmu(0x01300000, data.data() + 0x820, 0x1AFE00);
PC = 0x01200000; PowerPC::ppcState.gpr[3] = 0xfff0001f;
PowerPC::ppcState.gpr[4] = 0x00002030;
PowerPC::ppcState.gpr[5] = 0x0000009c;
PowerPC::ppcState.msr = 0x00002030;
PowerPC::ppcState.spr[SPR_HID0] = 0x0011c464;
PowerPC::ppcState.spr[SPR_IBAT0U] = 0x80001fff;
PowerPC::ppcState.spr[SPR_IBAT0L] = 0x00000002;
PowerPC::ppcState.spr[SPR_IBAT3U] = 0xfff0001f;
PowerPC::ppcState.spr[SPR_IBAT3L] = 0xfff00001;
PowerPC::ppcState.spr[SPR_DBAT0U] = 0x80001fff;
PowerPC::ppcState.spr[SPR_DBAT0L] = 0x00000002;
PowerPC::ppcState.spr[SPR_DBAT1U] = 0xc0001fff;
PowerPC::ppcState.spr[SPR_DBAT1L] = 0x0000002a;
PowerPC::ppcState.spr[SPR_DBAT3U] = 0xfff0001f;
PowerPC::ppcState.spr[SPR_DBAT3L] = 0xfff00001;
PC = 0x81200150;
return true; return true;
} }