=> R0 = reason code number
0 CRC 16 block
1 CRC 32 block
2 Open encrypt
3 Encrypt block
4 Decrypt block
5 Close encrypt
This SWI is used to do different forms of encoding on data.
SparkFS_Code 0
=> R0 = 0 (CRC 16 block)
R1 = CRC in
R2 = pointer to data block
R3 = length of data
<= R1 = CRC out
This call will calculate a 16-bit CRC value for a block of data.
SparkFS_Code 1
=> R0 = 1 (CRC 32 block)
R1 = CRC in
R2 = pointer to data block
R3 = length
<= R1 = CRC out
This call will calculate a 32-bit CRC value for a block of data.
SparkFS_Code 2
=> R0 = 2 (Open Encrypt)
R1 = type (1 for Garble, 2 for DES)
R2 = pointer to password
This call is used to start an encrypt or decryptiong session.
SparkFS_Code 3
=> R0 = 3 (Encrypt block)
R1 = type (1 for Garble, 2 for DES)
R2 = pointer to data block
R3 = length
This call will encrypt a block of data using the password given in the previous call to SparkFS_Code 2.
SparkFS_Code 4
=> R0 = 4 (Decrypt block)
R1 = type (1 for Garble, 2 for DES)
R2 = pointer to data block
R3 = length
This call will decrypt a previously encrypted block of data, if the password matches that given by SparkFS_Code 2.
SparkFS_Code 5
=> R0 = 5 (Close Encrypt)
R1 = type (1 for Garble, 2 for DES)
This call will terminate an encrypt session.
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