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Merge pull request #5862 from JosJuice/bs2-cleanup 

Emulated BS2 cleanup
This commit is contained in:
Leo Lam 2017-08-02 12:03:50 +08:00 committed by GitHub
parent 407bc7a544 363547a5b2
commit 4ddf4e9604
4 changed files with 47 additions and 56 deletions
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11
Source/Core/Core/Boot/Boot.cpp
View File

@ -298,7 +298,7 @@ bool CBoot::BootUp(std::unique_ptr<BootParameters> boot)
if (!volume)
return false;
if (!EmulatedBS2(config.bWii, volume))
if (!EmulatedBS2(config.bWii, *volume))
return false;
// Try to load the symbol map if there is one, and then scan it for
@ -324,18 +324,19 @@ bool CBoot::BootUp(std::unique_ptr<BootParameters> boot)
SetDefaultDisc();
SetupMSR();
SetupBAT(config.bWii);
if (config.bWii)
{
HID4.SBE = 1;
SetupMSR();
SetupBAT(config.bWii);
// Because there is no TMD to get the requested system (IOS) version from,
// we default to IOS58, which is the version used by the Homebrew Channel.
SetupWiiMemory(nullptr, 0x000000010000003a);
SetupWiiMemory(0x000000010000003a);
}
else
{
EmulatedBS2_GC(nullptr, true);
SetupGCMemory();
}
PC = executable.reader->GetEntryPoint();

9
Source/Core/Core/Boot/Boot.h
View File

@ -102,12 +102,13 @@ private:
static void SetupMSR();
static void SetupBAT(bool is_wii);
static bool RunApploader(bool is_wii, const DiscIO::Volume& volume);
static bool EmulatedBS2_GC(const DiscIO::Volume* volume, bool skip_app_loader = false);
static bool EmulatedBS2_Wii(const DiscIO::Volume* volume);
static bool EmulatedBS2(bool is_wii, const DiscIO::Volume* volume);
static bool EmulatedBS2_GC(const DiscIO::Volume& volume);
static bool EmulatedBS2_Wii(const DiscIO::Volume& volume);
static bool EmulatedBS2(bool is_wii, const DiscIO::Volume& volume);
static bool Load_BS2(const std::string& boot_rom_filename);
static bool SetupWiiMemory(const DiscIO::Volume* volume, u64 ios_title_id);
static void SetupGCMemory();
static bool SetupWiiMemory(u64 ios_title_id);
};
class BootExecutableReader

81
Source/Core/Core/Boot/Boot_BS2Emu.cpp
View File

@ -152,25 +152,8 @@ bool CBoot::RunApploader(bool is_wii, const DiscIO::Volume& volume)
return true;
}
// __________________________________________________________________________________________________
// GameCube Bootstrap 2 HLE:
// copy the apploader to 0x81200000
// execute the apploader, function by function, using the above utility.
bool CBoot::EmulatedBS2_GC(const DiscIO::Volume* volume, bool skip_app_loader)
void CBoot::SetupGCMemory()
{
INFO_LOG(BOOT, "Faking GC BS2...");
SetupMSR();
SetupBAT(/*is_wii*/ false);
// Write necessary values
// Here we write values to memory that the apploader does not take care of. Game info goes
// to 0x80000000 according to YAGCD 4.2.
// It's possible to boot DOL and ELF files without a disc inserted
if (volume)
DVDRead(*volume, /*offset*/ 0x00000000, /*address*/ 0x00000000, 0x20, DiscIO::PARTITION_NONE);
// Booted from bootrom. 0xE5207C22 = booted from jtag
PowerPC::HostWrite_U32(0x0D15EA5E, 0x80000020);
@ -182,8 +165,8 @@ bool CBoot::EmulatedBS2_GC(const DiscIO::Volume* volume, bool skip_app_loader)
// (Seem to take different EXI paths, see Ikaruga for example)
PowerPC::HostWrite_U32(0x10000006, 0x8000002C);
const bool ntsc = DiscIO::IsNTSC(SConfig::GetInstance().m_region);
PowerPC::HostWrite_U32(ntsc ? 0 : 1, 0x800000CC); // Fake the VI Init of the IPL (YAGCD 4.2.1.4)
// Fake the VI Init of the IPL (YAGCD 4.2.1.4)
PowerPC::HostWrite_U32(DiscIO::IsNTSC(SConfig::GetInstance().m_region) ? 0 : 1, 0x800000CC);
PowerPC::HostWrite_U32(0x01000000, 0x800000d0); // ARAM Size. 16MB main + 4/16/32MB external
// (retail consoles have no external ARAM)
@ -199,9 +182,24 @@ bool CBoot::EmulatedBS2_GC(const DiscIO::Volume* volume, bool skip_app_loader)
// HIO checks this
// PowerPC::HostWrite_U16(0x8200, 0x000030e6); // Console type
}
if (!volume)
return false;
// __________________________________________________________________________________________________
// GameCube Bootstrap 2 HLE:
// copy the apploader to 0x81200000
// execute the apploader, function by function, using the above utility.
bool CBoot::EmulatedBS2_GC(const DiscIO::Volume& volume)
{
INFO_LOG(BOOT, "Faking GC BS2...");
SetupMSR();
SetupBAT(/*is_wii*/ false);
SetupGCMemory();
DVDRead(volume, /*offset*/ 0x00000000, /*address*/ 0x00000000, 0x20, DiscIO::PARTITION_NONE);
const bool ntsc = DiscIO::IsNTSC(SConfig::GetInstance().m_region);
// Setup pointers like real BS2 does
@ -212,13 +210,10 @@ bool CBoot::EmulatedBS2_GC(const DiscIO::Volume* volume, bool skip_app_loader)
// Global pointer to Small Data Area Base (Luigi's Mansion's apploader uses it)
PowerPC::ppcState.gpr[13] = ntsc ? 0x81465320 : 0x814b4fc0;
if (skip_app_loader)
return false;
return RunApploader(/*is_wii*/ false, *volume);
return RunApploader(/*is_wii*/ false, volume);
}
bool CBoot::SetupWiiMemory(const DiscIO::Volume* volume, u64 ios_title_id)
bool CBoot::SetupWiiMemory(u64 ios_title_id)
{
static const std::map<DiscIO::Region, const RegionSetting> region_settings = {
{DiscIO::Region::NTSC_J, {"JPN", "NTSC", "JP", "LJ"}},
@ -284,10 +279,6 @@ bool CBoot::SetupWiiMemory(const DiscIO::Volume* volume, u64 ios_title_id)
0x80000060 Copyright code
*/
// When booting a WAD or the system menu, there will probably not be a disc inserted
if (volume)
DVDRead(*volume, 0x00000000, 0x00000000, 0x20, DiscIO::PARTITION_NONE); // Game Code
Memory::Write_U32(0x0D15EA5E, 0x00000020); // Another magic word
Memory::Write_U32(0x00000001, 0x00000024); // Unknown
Memory::Write_U32(Memory::REALRAM_SIZE, 0x00000028); // MEM1 size 24MB
@ -332,29 +323,28 @@ bool CBoot::SetupWiiMemory(const DiscIO::Volume* volume, u64 ios_title_id)
// Wii Bootstrap 2 HLE:
// copy the apploader to 0x81200000
// execute the apploader
bool CBoot::EmulatedBS2_Wii(const DiscIO::Volume* volume)
bool CBoot::EmulatedBS2_Wii(const DiscIO::Volume& volume)
{
INFO_LOG(BOOT, "Faking Wii BS2...");
if (!volume)
if (volume.GetVolumeType() != DiscIO::Platform::WII_DISC)
return false;
if (volume->GetVolumeType() != DiscIO::Platform::WII_DISC)
return false;
const DiscIO::Partition partition = volume->GetGamePartition();
const IOS::ES::TMDReader tmd = volume->GetTMD(partition);
const DiscIO::Partition partition = volume.GetGamePartition();
const IOS::ES::TMDReader tmd = volume.GetTMD(partition);
if (!tmd.IsValid())
return false;
if (!SetupWiiMemory(volume, tmd.GetIOSId()))
if (!SetupWiiMemory(tmd.GetIOSId()))
return false;
DVDRead(volume, 0x00000000, 0x00000000, 0x20, DiscIO::PARTITION_NONE); // Game Code
// This is some kind of consistency check that is compared to the 0x00
// values as the game boots. This location keeps the 4 byte ID for as long
// as the game is running. The 6 byte ID at 0x00 is overwritten sometime
// after this check during booting.
DVDRead(*volume, 0, 0x3180, 4, partition);
DVDRead(volume, 0, 0x3180, 4, partition);
SetupMSR();
SetupBAT(/*is_wii*/ true);
@ -365,20 +355,19 @@ bool CBoot::EmulatedBS2_Wii(const DiscIO::Volume* volume)
PowerPC::ppcState.gpr[1] = 0x816ffff0; // StackPointer
if (!RunApploader(/*is_wii*/ true, *volume))
if (!RunApploader(/*is_wii*/ true, volume))
return false;
// Warning: This call will set incorrect running game metadata if our volume parameter
// doesn't point to the same disc as the one that's inserted in the emulated disc drive!
IOS::HLE::Device::ES::DIVerify(tmd, volume->GetTicket(partition));
IOS::HLE::Device::ES::DIVerify(tmd, volume.GetTicket(partition));
return true;
}
// Returns true if apploader has run successfully.
// If is_wii is true and volume is not nullptr, the disc that volume
// point to must currently be inserted into the emulated disc drive.
bool CBoot::EmulatedBS2(bool is_wii, const DiscIO::Volume* volume)
// Returns true if apploader has run successfully. If is_wii is true, the disc
// that volume refers to must currently be inserted into the emulated disc drive.
bool CBoot::EmulatedBS2(bool is_wii, const DiscIO::Volume& volume)
{
return is_wii ? EmulatedBS2_Wii(volume) : EmulatedBS2_GC(volume);
}

2
Source/Core/Core/Boot/Boot_WiiWAD.cpp
View File

@ -94,7 +94,7 @@ bool CBoot::Boot_WiiWAD(const std::string& _pFilename)
IOS::HLE::CreateVirtualFATFilesystem();
// setup Wii memory
if (!SetupWiiMemory(nullptr, ContentLoader.GetTMD().GetIOSId()))
if (!SetupWiiMemory(ContentLoader.GetTMD().GetIOSId()))
return false;
IOS::HLE::Device::ES::LoadWAD(_pFilename);