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using com.clusterrr.Famicom.DumperConnection;
using System;
using System.IO;
using System.Linq;
namespace com.clusterrr.Famicom.Dumper.FlashWriters
{
static class FlashHelper
{
private enum FlashDeviceInterface
{
x8_only = 0x0000,
x16_only = 0x0001,
x8_and_x16_via_byte_pin = 0x0002,
x32_only = 0x0003,
x8_and_x16_via_word_pin = 0x0004,
}
public static void ResetFlash(IFamicomDumperConnection dumper)
{
// Exit command set entry if any
dumper.WriteCpu(0x8000, 0x90);
dumper.WriteCpu(0x8000, 0x00);
// Reset
dumper.WriteCpu(0x8000, 0xF0);
}
public static CFIInfo GetCFIInfo(IFamicomDumperConnection dumper)
{
try
{
ResetFlash(dumper);
dumper.WriteCpu(0x8AAA, 0x98); // CFI mode
var cfiRaw = dumper.ReadCpu(0x8000, 0x100);
var cfi = new CFIInfo(cfiRaw, CFIInfo.ParseMode.Every2Bytes);
return cfi;
}
finally
{
dumper.WriteCpu(0x8000, 0xF0);
}
}
public static void PrintCFIInfo(CFIInfo cfi)
{
Console.WriteLine($"Primary algorithm command set and control interface ID code: {cfi.PrimaryAlgorithmCommandSet:X4}h");
Console.WriteLine($"Alternative algorithm command set and control interface ID code: {cfi.AlternativeAlgorithmCommandSet:X4}h");
Console.WriteLine($"Vcc logic supply sinimum program / erase voltage: {cfi.VccLogicSupplyMinimumProgramErase:F1}v");
Console.WriteLine($"Vcc logic supply maximum program / erase voltage: {cfi.VccLogicSupplyMaximumProgramErase:F1}v");
Console.WriteLine($"Vpp [programming] supply minimum program / erase voltage: {cfi.VppSupplyMinimumProgramErasevoltage:F1}v");
Console.WriteLine($"Vpp [programming] supply maximum program / erase voltage: {cfi.VppSupplyMaximumProgramErasevoltage:F1}v");
Console.WriteLine($"Typical timeout for single byte/word/D-word program: {cfi.TypicalTimeoutPerSingleProgram}us");
Console.WriteLine($"Typical timeout for maximum-size multi-byte program: {cfi.TypicalTimeoutForMaximumSizeMultiByteProgram}us");
Console.WriteLine($"Typical timeout for individual block erase: {cfi.TypicalTimeoutPerIndividualBlockErase}ms");
Console.WriteLine($"Typical timeout for full chip erase: {cfi.TypicalTimeoutForFullChipErase}ms");
Console.WriteLine($"Maximum timeout for single byte/word/D-word program: {cfi.MaximumTimeoutPerSingleProgram}us");
Console.WriteLine($"Maximum timeout for maximum-size multi-byte program: {cfi.MaximumTimeoutForMaximumSizeMultiByteProgram}us");
Console.WriteLine($"Maximum timeout for individual block erase: {cfi.MaximumTimeoutPerIndividualBlockErase}ms");
Console.WriteLine($"Maximum timeout for full chip erase: {cfi.MaximumTimeoutForFullChipErase}ms");
Console.WriteLine($"Device size: {cfi.DeviceSize / 1024 / 1024} MByte / {cfi.DeviceSize / 1024 / 1024 * 8} Mbit");
Console.WriteLine($"Flash device interface: {cfi.FlashDeviceInterfaceCodeDescription.ToString().Replace("_", " ")}");
Console.WriteLine($"Maximum number of bytes in multi-byte program: {cfi.MaximumNumberOfBytesInMultiProgram}");
for (int eraseBlockRegion = 0; eraseBlockRegion < cfi.EraseBlockRegionsInfo.Length; eraseBlockRegion++)
{
Console.WriteLine($"Erase block region #{eraseBlockRegion}:");
Console.WriteLine($" - Sectors size: {cfi.EraseBlockRegionsInfo[eraseBlockRegion].SizeOfBlocks} Bytes");
Console.WriteLine($" - Sectors count: {cfi.EraseBlockRegionsInfo[eraseBlockRegion].NumberOfBlocks}");
}
}
public static void PasswordProgramm(FamicomDumperLocal dumper, byte[] password)
{
if (password.Length != 8)
throw new InvalidDataException("Invalid password length");
Console.Write("Programming password... ");
// Password Protection Set Entry
dumper.WriteCpu(0x8AAA, 0xAA);
dumper.WriteCpu(0x8555, 0x55);
dumper.WriteCpu(0x8AAA, 0x60);
try
{
for (byte i = 0; i < password.Length; i++)
{
dumper.WriteCpu(0x8000, 0xA0);
dumper.WriteCpu((ushort)(0x8000 + i), password[i]);
}
var verify = dumper.ReadCpu(0x8000, 8);
for (byte i = 0; i < password.Length; i++)
if (password[i] != verify[i])
throw new InvalidDataException("Password verification failed");
}
finally
{
ResetFlash(dumper);
}
Console.WriteLine("OK");
Console.Write("Programming lock register... ");
// Lock Register Set Entry
dumper.WriteCpu(0x8AAA, 0xAA);
dumper.WriteCpu(0x8555, 0x55);
dumper.WriteCpu(0x8AAA, 0x40);
try
{
// Bits Program
dumper.WriteCpu(0x8000, 0xA0);
dumper.WriteCpu(0x8000, 1 << 2 ^ 0xFF); // password protection
var r = dumper.ReadCpu(0x8000);
if ((r & 7) != 3)
throw new InvalidDataException("Lock bit verification failed");
}
finally
{
ResetFlash(dumper);
}
Console.WriteLine("OK");
}
public static void PasswordUnlock(FamicomDumperLocal dumper, byte[] password)
{
try
{
if (password.Length != 8)
throw new InvalidDataException("Invalid password length");
Console.Write("Unlocking password... ");
// Password Protection Set Entry
dumper.WriteCpu(0x8AAA, 0xAA);
dumper.WriteCpu(0x8555, 0x55);
dumper.WriteCpu(0x8AAA, 0x60);
// Password unlock
dumper.WriteCpu(0x8000, 0x25);
dumper.WriteCpu(0x8000, 0x03);
for (byte i = 0; i < password.Length; i++)
dumper.WriteCpu((ushort)(0x8000 + i), password[i]);
dumper.WriteCpu(0x8000, 0x29);
Console.WriteLine("OK");
}
finally
{
ResetFlash(dumper);
}
}
public static void LockBitsCheckPrint(IFamicomDumperConnection dumper)
{
try
{
// Lock Register Set Entry
dumper.WriteCpu(0x8AAA, 0xAA);
dumper.WriteCpu(0x8555, 0x55);
dumper.WriteCpu(0x8AAA, 0x40);
var lockRegister = dumper.ReadCpu(0x8000);
if ((lockRegister & 1) == 0)
Console.WriteLine("WARNING: Secured Silicon Sector Protection Bit is set!");
if ((lockRegister & 2) == 0)
Console.WriteLine("WARNING: Persistent Protection Mode Lock Bit is set!");
if ((lockRegister & 4) == 0)
Console.WriteLine("WARNING: Password Protection Mode Lock Bit is set!");
}
finally
{
ResetFlash(dumper);
}
}
public static void PPBLockBitCheckPrint(IFamicomDumperConnection dumper)
{
try
{
// PPB Lock Command Set Entry
dumper.WriteCpu(0x8AAA, 0xAA);
dumper.WriteCpu(0x8555, 0x55);
dumper.WriteCpu(0x8AAA, 0x50);
var ppbLockStatus = dumper.ReadCpu(0x8000);
if (ppbLockStatus == 0)
Console.WriteLine("WARNING: PPB Lock Bit is set!");
}
finally
{
ResetFlash(dumper);
}
}
public static byte PPBRead(IFamicomDumperConnection dumper)
{
try
{
// PPB Command Set Entry
dumper.WriteCpu(0x8AAA, 0xAA);
dumper.WriteCpu(0x8555, 0x55);
dumper.WriteCpu(0x8AAA, 0xC0);
// PPB Status Read
return dumper.ReadCpu(0x8000);
}
finally
{
ResetFlash(dumper);
}
}
public static void PPBSet(IFamicomDumperConnection dumper)
{
Console.Write("Writing PPB for sector... ");
// PPB Command Set Entry
dumper.WriteCpu(0x8AAA, 0xAA);
dumper.WriteCpu(0x8555, 0x55);
dumper.WriteCpu(0x8AAA, 0xC0);
// PPB Program
dumper.WriteCpu(0x8000, 0xA0);
dumper.WriteCpu(0x8000, 0x00);
// Check
try
{
DateTime startTime = DateTime.Now;
while (true)
{
byte b = dumper.ReadCpu(0x8000);
if (b == 0x00)
break;
if ((DateTime.Now - startTime).TotalMilliseconds >= 1500)
throw new IOException("PPB write failed");
}
}
finally
{
ResetFlash(dumper);
}
Console.WriteLine("OK");
}
public static void PPBClear(IFamicomDumperConnection dumper)
{
LockBitsCheckPrint(dumper);
PPBLockBitCheckPrint(dumper);
Console.Write($"Erasing all PPBs... ");
// PPB Command Set Entry
dumper.WriteCpu(0x8AAA, 0xAA);
dumper.WriteCpu(0x8555, 0x55);
dumper.WriteCpu(0x8AAA, 0xC0);
// All PPB Erase
dumper.WriteCpu(0x8000, 0x80);
dumper.WriteCpu(0x8000, 0x30);
// Check
try
{
DateTime startTime = DateTime.Now;
while (true)
{
byte b = dumper.ReadCpu(0x8000);
if (b == 0x01)
break;
if ((DateTime.Now - startTime).TotalMilliseconds >= 1500)
throw new IOException("PPB clear failed");
}
}
finally
{
ResetFlash(dumper);
}
Console.WriteLine("OK");
}
}
}
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