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BS2 emulation: set up a reasonable BAT during startup. 

It doesn't really matter much at the moment given our current terrible MMU
emulation, but it will start mattering once our MMU emulation gets more
accurate.
This commit is contained in:
magumagu 2014-05-24 02:12:37 -07:00
parent 440246a190
commit 336b55bbc4
2 changed files with 36 additions and 0 deletions
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20
Source/Core/Core/Boot/Boot_BS2Emu.cpp
View File

@ -40,8 +40,15 @@ bool CBoot::EmulatedBS2_GC()
{
INFO_LOG(BOOT, "Faking GC BS2...");
// Set up MSR and the BAT SPR registers.
UReg_MSR& m_MSR = ((UReg_MSR&)PowerPC::ppcState.msr);
m_MSR.FP = 1;
PowerPC::ppcState.spr[SPR_IBAT0U] = 0x800001ff;
PowerPC::ppcState.spr[SPR_IBAT0L] = 0x00000002;
PowerPC::ppcState.spr[SPR_DBAT0U] = 0x800001ff;
PowerPC::ppcState.spr[SPR_DBAT0L] = 0x00000002;
PowerPC::ppcState.spr[SPR_DBAT1U] = 0xc0001fff;
PowerPC::ppcState.spr[SPR_DBAT1L] = 0x0000002a;
// Clear ALL memory
Memory::Clear();
@ -317,8 +324,21 @@ bool CBoot::EmulatedBS2_Wii()
bool apploaderRan = false;
if (VolumeHandler::IsValid() && VolumeHandler::IsWii())
{
// Set up MSR and the BAT SPR registers.
UReg_MSR& m_MSR = ((UReg_MSR&)PowerPC::ppcState.msr);
m_MSR.FP = 1;
PowerPC::ppcState.spr[SPR_IBAT0U] = 0x800001ff;
PowerPC::ppcState.spr[SPR_IBAT0L] = 0x00000002;
PowerPC::ppcState.spr[SPR_IBAT4L] = 0x90001fff;
PowerPC::ppcState.spr[SPR_IBAT4L] = 0x10000002;
PowerPC::ppcState.spr[SPR_DBAT0U] = 0x800001ff;
PowerPC::ppcState.spr[SPR_DBAT0L] = 0x00000002;
PowerPC::ppcState.spr[SPR_DBAT1U] = 0xc0001fff;
PowerPC::ppcState.spr[SPR_DBAT1L] = 0x0000002a;
PowerPC::ppcState.spr[SPR_DBAT4U] = 0x90001fff;
PowerPC::ppcState.spr[SPR_DBAT4L] = 0x10000002;
PowerPC::ppcState.spr[SPR_DBAT5U] = 0xd0001fff;
PowerPC::ppcState.spr[SPR_DBAT5L] = 0x1000002a;
Memory::Write_U32(0x4c000064, 0x80000300); // Write default DFI Handler: rfi
Memory::Write_U32(0x4c000064, 0x80000800); // Write default FPU Handler: rfi

16
Source/Core/Core/PowerPC/Gekko.h
View File

@ -749,6 +749,22 @@ enum
SPR_DBAT2L = 541,
SPR_DBAT3U = 542,
SPR_DBAT3L = 543,
SPR_IBAT4U = 560,
SPR_IBAT4L = 561,
SPR_IBAT5U = 562,
SPR_IBAT5L = 563,
SPR_IBAT6U = 564,
SPR_IBAT6L = 565,
SPR_IBAT7U = 566,
SPR_IBAT7L = 567,
SPR_DBAT4U = 568,
SPR_DBAT4L = 569,
SPR_DBAT5U = 570,
SPR_DBAT5L = 571,
SPR_DBAT6U = 572,
SPR_DBAT6L = 573,
SPR_DBAT7U = 574,
SPR_DBAT7L = 575,
SPR_GQR0 = 912,
SPR_HID0 = 1008,
SPR_HID1 = 1009,