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https://github.com/Retropex/dolphin.git
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fdfe57a49b
This implements MIOS's PPC bootstrapping functionality, which enables users to start a GameCube game from the Wii System Menu. Because we aren't doing Starlet LLE (and don't have a boot1), we can just jump to MIOS when the emulated software does an ES_LAUNCH or uses ioctlv 0x25 to launch BC. Note that the process is more complex on a real Wii and goes through several more steps before getting to MIOS: * The System Menu detects a GameCube disc and launches BC (1-100) instead of the game. [Dolphin does this too.] * BC, which is reportedly very similar to boot1, lowers the Hollywood clock speed to the Flipper's and then launches boot2. * boot2 sees the lowered clock speed and launches MIOS (1-101) instead of the System Menu. MIOS runs instead of IOS in GC mode and has an embedded GC IPL (which is the code actually responsible for loading the disc game) and a PPC bootstrap code. To get things working properly, we simply need to load both to memory, then jump to the bootstrap code at 0x3400. Obviously, because of the way this works, a real MIOS is required.
132 lines
3.9 KiB
C++
132 lines
3.9 KiB
C++
// Copyright 2008 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#pragma once
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#include <string>
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#include <vector>
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#include "Common/CommonTypes.h"
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class PointerWrap;
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namespace DiscIO
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{
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class IVolume;
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}
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namespace MMIO
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{
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class Mapping;
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}
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namespace DVDInterface
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{
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// Not sure about endianness here. I'll just name them like this...
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enum DIErrorLow
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{
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ERROR_READY = 0x00000000, // Ready.
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ERROR_COVER_L = 0x01000000, // Cover is opened.
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ERROR_CHANGE_DISK = 0x02000000, // Disk change.
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ERROR_NO_DISK = 0x03000000, // No disk.
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ERROR_MOTOR_STOP_L = 0x04000000, // Motor stop.
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ERROR_NO_DISKID_L = 0x05000000 // Disk ID not read.
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};
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enum DIErrorHigh
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{
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ERROR_NONE = 0x000000, // No error.
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ERROR_MOTOR_STOP_H = 0x020400, // Motor stopped.
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ERROR_NO_DISKID_H = 0x020401, // Disk ID not read.
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ERROR_COVER_H = 0x023a00, // Medium not present / Cover opened.
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ERROR_SEEK_NDONE = 0x030200, // No seek complete.
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ERROR_READ = 0x031100, // Unrecovered read error.
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ERROR_PROTOCOL = 0x040800, // Transfer protocol error.
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ERROR_INV_CMD = 0x052000, // Invalid command operation code.
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ERROR_AUDIO_BUF = 0x052001, // Audio Buffer not set.
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ERROR_BLOCK_OOB = 0x052100, // Logical block address out of bounds.
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ERROR_INV_FIELD = 0x052400, // Invalid field in command packet.
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ERROR_INV_AUDIO = 0x052401, // Invalid audio command.
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ERROR_INV_PERIOD = 0x052402, // Configuration out of permitted period.
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ERROR_END_USR_AREA = 0x056300, // End of user area encountered on this track.
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ERROR_MEDIUM = 0x062800, // Medium may have changed.
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ERROR_MEDIUM_REQ = 0x0b5a01 // Operator medium removal request.
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};
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enum DICommand
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{
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DVDLowInquiry = 0x12,
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DVDLowReadDiskID = 0x70,
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DVDLowRead = 0x71,
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DVDLowWaitForCoverClose = 0x79,
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DVDLowGetCoverReg = 0x7a, // DVDLowPrepareCoverRegister?
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DVDLowNotifyReset = 0x7e,
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DVDLowReadDvdPhysical = 0x80,
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DVDLowReadDvdCopyright = 0x81,
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DVDLowReadDvdDiscKey = 0x82,
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DVDLowClearCoverInterrupt = 0x86,
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DVDLowGetCoverStatus = 0x88,
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DVDLowReset = 0x8a,
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DVDLowOpenPartition = 0x8b,
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DVDLowClosePartition = 0x8c,
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DVDLowUnencryptedRead = 0x8d,
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DVDLowEnableDvdVideo = 0x8e,
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DVDLowReportKey = 0xa4,
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DVDLowSeek = 0xab,
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DVDLowReadDvd = 0xd0,
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DVDLowReadDvdConfig = 0xd1,
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DVDLowStopLaser = 0xd2,
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DVDLowOffset = 0xd9,
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DVDLowReadDiskBca = 0xda,
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DVDLowRequestDiscStatus = 0xdb,
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DVDLowRequestRetryNumber = 0xdc,
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DVDLowSetMaximumRotation = 0xdd,
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DVDLowSerMeasControl = 0xdf,
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DVDLowRequestError = 0xe0,
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DVDLowStopMotor = 0xe3,
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DVDLowAudioBufferConfig = 0xe4
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};
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enum DIInterruptType : int
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{
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INT_DEINT = 0,
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INT_TCINT = 1,
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INT_BRKINT = 2,
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INT_CVRINT = 3,
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};
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enum class ReplyType : u32
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{
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NoReply,
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Interrupt,
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IOS,
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DTK
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};
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void Init();
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void Reset();
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void Shutdown();
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void DoState(PointerWrap& p);
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void RegisterMMIO(MMIO::Mapping* mmio, u32 base);
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// Direct disc access
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const DiscIO::IVolume& GetVolume();
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bool SetVolumeName(const std::string& disc_path);
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bool SetVolumeDirectory(const std::string& disc_path, bool is_wii,
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const std::string& apploader_path = "", const std::string& DOL_path = "");
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bool VolumeIsValid();
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// Disc detection and swapping
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void SetDiscInside(bool _DiscInside);
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bool IsDiscInside();
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void ChangeDiscAsHost(const std::string& new_path); // Can only be called by the host thread
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void ChangeDiscAsCPU(const std::string& new_path); // Can only be called by the CPU thread
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// DVD Access Functions
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bool ChangePartition(u64 offset);
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void ExecuteCommand(u32 command_0, u32 command_1, u32 command_2, u32 output_address,
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u32 output_length, bool reply_to_ios);
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void FinishExecutingCommand(ReplyType reply_type, DIInterruptType interrupt_type, s64 cycles_late,
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const std::vector<u8>& data = std::vector<u8>());
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} // end of namespace DVDInterface
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