public static void SetupExecutionState(BootMode bootMode)
{
if (bootMode == BootMode.IPL_ROM)
{
throw new InvalidOperationException("Low-level IPL booting not supported yet");
//Machine.Current.RCP.State.PC = 0x1FC00000;
/* TODO:
* Schedule CPU and RCP threads to execute MIPS Interpreter
* Have CPU sit idle, and RCP execute the PIF Rom
* */
}
else if (bootMode == BootMode.HLE_IPL)
{
if (Machine.Current.DeviceRCP.DevicePI.InsertedCartridge != null)
{
/* Code taken from mupen64plus-core on github */
ExecutionState state = Machine.Current.DeviceCPU.State;
state.PC = 0xA4000040;
/* PI Setup */
PIRegisters piRegs = Machine.Current.DeviceRCP.MMIO_PI;
PiBusSpeedConfig config = Cartridge.Current.RomImage.BusConfig;
piRegs.Domain1Latency = (UInt32)config.DeviceLatency;
piRegs.Domain1PageSize = (UInt32)config.PageSize;
piRegs.Domain1PulseWidth = (UInt32)config.PulseWidth;
piRegs.Domain1Release = (UInt32)config.ReleaseTime;
piRegs.Status = 0;
/* sp_register.sp_status_reg = 1;
rsp_register.rsp_pc = 0;
ai_register.ai_dram_addr = 0;
ai_register.ai_len = 0;
vi_register.vi_v_intr = 1023;
vi_register.vi_current = 0;
vi_register.vi_h_start = 0;
MI_register.mi_intr_reg &= ~(0x10 | 0x8 | 0x4 | 0x1) */
logger.Debug("PIF HLE: Copying cartridge bootrom into DMEM + 0x40");
Machine.Current.N64MemorySafe.Position = N64MemRegions.SPDMem.ToRegionAddress() + 0x40;
Machine.Current.DeviceRCP.DevicePI.InsertedCartridge.RomImage.BootRomInformation.CopyCode(Machine.Current.N64MemorySafe);
state.GPRRegs[19] = 0; /* 0: Cart, 1: DiskDrive */
state.GPRRegs[20] = (UInt64)((Int32)Cartridge.Current.RomImage.Region) - 1;
state.GPRRegs[21] = 0; /* 0: ColdReset, 1: NMI */
state.GPRRegs[22] = (UInt64)Cartridge.Current.RomImage.BootRomInformation.CIC.Seed();
state.GPRRegs[23] = 0; /* S7: Unknown */
/* Required by CIC X105 */
BinaryWriter bw = new BinaryWriter(Machine.Current.N64MemorySafe);
bw.BaseStream.Position = 0x04001000;
bw.Write(0x3c0dbfc0U);
bw.Write(0x8da807fcU);
bw.Write(0x25ad07c0U);
bw.Write(0x31080080U);
bw.Write(0x5500fffcU);
bw.Write(0x3c0dbfc0U);
bw.Write(0x8da80024U);
bw.Write(0x3c0bb000U);
/* Required by CIC X105 */
state.GPRRegs[11] = 0xffffffffa4000040UL; /* T3 */
state.GPRRegs[29] = 0xffffffffa4001ff0UL; /* SP */
state.GPRRegs[31] = 0xffffffffa4001550UL; /* RA */
}
else
{
logger.Warn("No cartridge inserted, skipping IPL boot");
Machine.Current.DeviceCPU.State.PC = 0xBFC00000;
}
logger.Debug("ROM Entry Point: " + Machine.Current.DeviceCPU.State.PC.ToString("X8"));
}
else if (bootMode == BootMode.HLE_IPL_OLD)
{
if (Machine.Current.DeviceRCP.DevicePI.InsertedCartridge != null)
{
/* This is the older method of booting the emulator */
Machine.Current.DeviceCPU.State.PC = 0xA4000040;
/* This simulates the effects of the PIF Bootloader */
/* 1. Copy the game cartrdige boot rom into SP Memory
* 2. Load a snapshot of the CPU / Memory state generated by the real PIF boot sequence */
logger.Debug("PIF HLE: Copying cartridge bootrom into DMEM + 0x40");
Machine.Current.N64MemorySafe.Position = N64MemRegions.SPDMem.ToRegionAddress() + 0x40;
Machine.Current.DeviceRCP.DevicePI.InsertedCartridge.RomImage.BootRomInformation.CopyCode(Machine.Current.N64MemorySafe);
using (Stream stream = typeof(SoftBootManager).Assembly.GetManifestResourceStream("Soft64.BootStateSnapshots.xml"))
{
CartridgeInfo info = Cartridge.Current.GetCartridgeInfo();
CICKeyType cic = Cartridge.Current.RomImage.BootRomInformation.CIC;
BootSnapReader bootsnap = new BootSnapReader(stream);
bootsnap.LoadBootSnap(cic, info.RegionCode);
}
}
else
{
logger.Warn("No cartridge inserted, skipping IPL boot");
Machine.Current.DeviceCPU.State.PC = 0xBFC00000;
}
logger.Debug("ROM Entry Point: " + Machine.Current.DeviceCPU.State.PC.ToString("X8"));
}
else
{
throw new ArgumentException("Unknown bootmode");
}
}
public static void SetupExecutionState(BootMode bootMode)
{
if (bootMode == BootMode.IPL_ROM)
{
throw new InvalidOperationException("Low-level IPL booting not supported yet");
//Machine.Current.RCP.State.PC = 0x1FC00000;
/* TODO:
* Schedule CPU and RCP threads to execute MIPS Interpreter
* Have CPU sit idle, and RCP execute the PIF Rom
* */
}
else if (bootMode == BootMode.HLE_IPL)
{
if (Machine.Current.DeviceRCP.Interface_Parallel.InsertedCartridge != null)
{
/* Code taken from mupen64plus-core on github */
ExecutionState state = Machine.Current.DeviceCPU.State;
state.PC = 0xA4000040;
/* PI Setup */
var pi = Machine.Current.Memory.PI;
PiBusSpeedConfig config = Cartridge.Current.RomImage.BusConfig;
pi.Domain1Latency = config.DeviceLatency;
pi.Domain1PageSize = config.PageSize;
pi.Domain1PulseWidth = config.PulseWidth;
pi.Domain1Release = config.ReleaseTime;
pi.Status.DataShared = 0;
/* TODO: sp_register.sp_status_reg = 1;
* rsp_register.rsp_pc = 0;
*
* ai_register.ai_dram_addr = 0;
* ai_register.ai_len = 0;
*
* vi_register.vi_v_intr = 1023;
* vi_register.vi_current = 0;
* vi_register.vi_h_start = 0;
*
* /* MI Setup */
var mi = Machine.Current.Memory.MI;
mi.VersionReg.DataToMaster = 0x02020102;
mi.VersionReg.DataToSlave &= ~(0x10U | 0x8U | 0x4U | 0x1U);
PifHleCopyBootRom();
state.GPRRegs[19] = 0; /* 0: Cart, 1: DiskDrive */
state.GPRRegs[20] = (UInt64)((Int32)Cartridge.Current.RomImage.Region) - 1;
state.GPRRegs[21] = 0; /* 0: ColdReset, 1: NMI */
state.GPRRegs[22] = (UInt64)Cartridge.Current.RomImage.BootRomInformation.CIC.Seed();
state.GPRRegs[23] = 0; /* S7: Unknown */
/* Required by CIC X105 */
BinaryWriter bw = new BinaryWriter(Machine.Current.Memory);
bw.BaseStream.Position = 0x04001000;
bw.Write(0x3c0dbfc0U);
bw.Write(0x8da807fcU);
bw.Write(0x25ad07c0U);
bw.Write(0x31080080U);
bw.Write(0x5500fffcU);
bw.Write(0x3c0dbfc0U);
bw.Write(0x8da80024U);
bw.Write(0x3c0bb000U);
/* Required by CIC X105 */
state.GPRRegs[11] = 0xffffffffa4000040UL; /* T3 */
state.GPRRegs[29] = 0xffffffffa4001ff0UL; /* SP */
state.GPRRegs[31] = 0xffffffffa4001550UL; /* RA */
}
else
{
logger.Warn("No cartridge inserted, skipping IPL boot");
Machine.Current.DeviceCPU.State.PC = 0xBFC00000;
}
logger.Debug("ROM Entry Point: " + Machine.Current.DeviceCPU.State.PC.ToString("X8"));
}
else if (bootMode == BootMode.HLE_IPL_OLD)
{
if (Machine.Current.DeviceRCP.Interface_Parallel.InsertedCartridge != null)
{
/* This is the older method of booting the emulator */
Machine.Current.DeviceCPU.State.PC = 0xA4000040;
/* This simulates the effects of the PIF Bootloader */
/* 1. Copy the game cartrdige boot rom into SP Memory
* 2. Load a snapshot of the CPU / Memory state generated by the real PIF boot sequence */
PifHleCopyBootRom();
using (Stream stream = typeof(SoftBootManager).Assembly.GetManifestResourceStream("Soft64.BootStateSnapshots.xml"))
{
CartridgeInfo info = Cartridge.Current.GetCartridgeInfo();
CICKeyType cic = Cartridge.Current.RomImage.BootRomInformation.CIC;
BootSnapReader bootsnap = new BootSnapReader(stream);
bootsnap.LoadBootSnap(cic, info.RegionCode);
}
}
else
{
logger.Warn("No cartridge inserted, skipping IPL boot");
Machine.Current.DeviceCPU.State.PC = 0xBFC00000;
}
logger.Debug("ROM Entry Point: " + Machine.Current.DeviceCPU.State.PC.ToString("X8"));
}
else
{
throw new ArgumentException("Unknown bootmode");
}
}