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Better decoding of SecureDigital Card Register.

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This commit is contained in:
Natalia Portillo
2020-12-12 20:50:52 +00:00
parent 5b9b6fab59
commit 027f9d4dc7
1 changed files with 84 additions and 53 deletions
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137
SecureDigital/SCR.cs
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@@ -40,17 +40,30 @@ namespace Aaru.Decoders.SecureDigital
SuppressMessage("ReSharper", "MemberCanBePrivate.Global"), SuppressMessage("ReSharper", "NotAccessedField.Global")]
public class SCR
{
public byte BusWidth;
public byte CommandSupport;
public bool DataStatusAfterErase;
public byte ExtendedSecurity;
public byte[] ManufacturerReserved;
public byte Security;
public byte Spec;
public bool Spec3;
public bool Spec4;
public byte SpecX;
public byte Structure;
public BusWidth BusWidth;
public CommandSupport CommandSupport;
public bool DataStatusAfterErase;
public byte ExtendedSecurity;
public byte[] ManufacturerReserved;
public byte Security;
public byte Spec;
public bool Spec3;
public bool Spec4;
public byte SpecX;
public byte Structure;
}
[Flags]
public enum BusWidth : byte
{
OneBit = 1 << 0, FourBit = 1 << 2
}
[Flags]
public enum CommandSupport : byte
{
SpeedClassControl = 1 << 0, SetBlockCount = 1 << 1, ExtensionRegisterSingleBlock = 1 << 2,
ExtensionRegisterMultiBlock = 1 << 3
}
[SuppressMessage("ReSharper", "MemberCanBePrivate.Global"), SuppressMessage("ReSharper", "InconsistentNaming")]
@@ -82,12 +95,12 @@ namespace Aaru.Decoders.SecureDigital
Spec = (byte)(response[0] & 0x0F),
DataStatusAfterErase = (response[1] & 0x80) == 0x80,
Security = (byte)((response[1] & 0x70) >> 4),
BusWidth = (byte)(response[1] & 0x0F),
Spec3 = (response[2] & 0x80) == 0x80,
BusWidth = (BusWidth)(response[1] & 0x0F),
Spec3 = (response[2] & 0x80) == 0x80,
ExtendedSecurity = (byte)((response[2] & 0x78) >> 3),
Spec4 = (response[2] & 0x04) == 0x04,
SpecX = (byte)(((response[2] & 0x03) << 2) + ((response[3] & 0xC0) >> 6)),
CommandSupport = (byte)(response[3] & 0x0F),
CommandSupport = (CommandSupport)(response[3] & 0x0F),
ManufacturerReserved = new byte[4]
};
@@ -107,39 +120,57 @@ namespace Aaru.Decoders.SecureDigital
if(scr.Structure != 0)
sb.AppendFormat("\tUnknown register version {0}", scr.Structure).AppendLine();
if(scr.Spec == 0 &&
scr.Spec3 == false &&
scr.Spec4 == false &&
scr.SpecX == 0)
sb.AppendLine("\tDevice follows SecureDigital Physical Layer Specification version 1.0x");
else if(scr.Spec == 1 &&
scr.Spec3 == false &&
scr.Spec4 == false &&
scr.SpecX == 0)
sb.AppendLine("\tDevice follows SecureDigital Physical Layer Specification version 1.10");
else if(scr.Spec == 2 &&
scr.Spec3 == false &&
scr.Spec4 == false &&
scr.SpecX == 0)
sb.AppendLine("\tDevice follows SecureDigital Physical Layer Specification version 2.00");
else if(scr.Spec == 2 &&
scr.Spec3 &&
scr.Spec4 == false &&
scr.SpecX == 0)
sb.AppendLine("\tDevice follows SecureDigital Physical Layer Specification version 3.0x");
else if(scr.Spec == 2 &&
scr.Spec3 &&
scr.Spec4 &&
scr.SpecX == 0)
sb.AppendLine("\tDevice follows SecureDigital Physical Layer Specification version 4.xx");
else if(scr.Spec == 2 &&
scr.Spec3 &&
scr.SpecX == 1)
sb.AppendLine("\tDevice follows SecureDigital Physical Layer Specification version 5.xx");
else
sb.
AppendFormat("\tDevice follows SecureDigital Physical Layer Specification with unknown version {0}.{1}.{2}.{3}",
scr.Spec, scr.Spec3, scr.Spec4, scr.SpecX).AppendLine();
switch(scr.Spec)
{
case 0 when scr.Spec3 == false && scr.Spec4 == false && scr.SpecX == 0:
sb.AppendLine("\tDevice follows SecureDigital Physical Layer Specification version 1.0x");
break;
case 1 when scr.Spec3 == false && scr.Spec4 == false && scr.SpecX == 0:
sb.AppendLine("\tDevice follows SecureDigital Physical Layer Specification version 1.10");
break;
case 2 when scr.Spec3 == false && scr.Spec4 == false && scr.SpecX == 0:
sb.AppendLine("\tDevice follows SecureDigital Physical Layer Specification version 2.00");
break;
case 2 when scr.Spec3 && scr.Spec4 == false && scr.SpecX == 0:
sb.AppendLine("\tDevice follows SecureDigital Physical Layer Specification version 3.0x");
break;
case 2 when scr.Spec3 && scr.Spec4 && scr.SpecX == 0:
sb.AppendLine("\tDevice follows SecureDigital Physical Layer Specification version 4.xx");
break;
case 2 when scr.Spec3:
switch(scr.SpecX)
{
case 1:
sb.AppendLine("\tDevice follows SecureDigital Physical Layer Specification version 5.xx");
break;
case 2:
sb.AppendLine("\tDevice follows SecureDigital Physical Layer Specification version 6.xx");
break;
case 3:
sb.AppendLine("\tDevice follows SecureDigital Physical Layer Specification version 7.xx");
break;
case 4:
sb.AppendLine("\tDevice follows SecureDigital Physical Layer Specification version 8.xx");
break;
}
break;
default:
sb.
AppendFormat("\tDevice follows SecureDigital Physical Layer Specification with unknown version {0}.{1}.{2}.{3}",
scr.Spec, scr.Spec3, scr.Spec4, scr.SpecX).AppendLine();
break;
}
switch(scr.Security)
{
@@ -170,25 +201,25 @@ namespace Aaru.Decoders.SecureDigital
break;
}
if((scr.BusWidth & 0x01) == 0x01)
if(scr.BusWidth.HasFlag(BusWidth.OneBit))
sb.AppendLine("\tDevice supports 1-bit data bus");
if((scr.BusWidth & 0x04) == 0x04)
if(scr.BusWidth.HasFlag(BusWidth.FourBit))
sb.AppendLine("\tDevice supports 4-bit data bus");
if(scr.ExtendedSecurity != 0)
sb.AppendLine("\tDevice supports extended security");
if((scr.CommandSupport & 0x08) == 0x08)
if(scr.CommandSupport.HasFlag(CommandSupport.ExtensionRegisterMultiBlock))
sb.AppendLine("\tDevice supports extension register multi-block commands");
if((scr.CommandSupport & 0x04) == 0x04)
if(scr.CommandSupport.HasFlag(CommandSupport.ExtensionRegisterSingleBlock))
sb.AppendLine("\tDevice supports extension register single-block commands");
if((scr.CommandSupport & 0x02) == 0x02)
if(scr.CommandSupport.HasFlag(CommandSupport.SetBlockCount))
sb.AppendLine("\tDevice supports set block count command");
if((scr.CommandSupport & 0x01) == 0x01)
if(scr.CommandSupport.HasFlag(CommandSupport.SpeedClassControl))
sb.AppendLine("\tDevice supports speed class control command");
return sb.ToString();