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Boot: Split out some code to a new function SetupGCMemory 

Just like the existing function SetupWiiMemory.
This commit is contained in:
JosJuice 2017-08-01 15:23:44 +02:00
parent a8606f5d13
commit fea75d045c
3 changed files with 26 additions and 23 deletions
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7
Source/Core/Core/Boot/Boot.cpp
View File

@ -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);
}
else
{
EmulatedBS2_GC(nullptr, true);
SetupGCMemory();
}
PC = executable.reader->GetEntryPoint();

1
Source/Core/Core/Boot/Boot.h
View File

@ -107,6 +107,7 @@ private:
static bool EmulatedBS2(bool is_wii, const DiscIO::Volume* volume);
static bool Load_BS2(const std::string& boot_rom_filename);
static void SetupGCMemory();
static bool SetupWiiMemory(const DiscIO::Volume* volume, u64 ios_title_id);
};

41
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)
@ -199,10 +182,28 @@ bool CBoot::EmulatedBS2_GC(const DiscIO::Volume* volume, bool skip_app_loader)
// HIO checks this
// PowerPC::HostWrite_U16(0x8200, 0x000030e6); // Console type
}
// __________________________________________________________________________________________________
// 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)
{
INFO_LOG(BOOT, "Faking GC BS2...");
SetupMSR();
SetupBAT(/*is_wii*/ false);
SetupGCMemory();
if (!volume)
return false;
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
// StackPointer, used to be set to 0x816ffff0