User Interface

Table 3. Channel Defines

DefineDescription

NUM_AFHAS Number of ARC4 CHAs

NUM_DESAS Number of DES CHAs

NUM_MDHAS Number of MD CHAs

NUM_RNGAS Number of RNG CHAs

NUM_PKHAS Number of PK CHAs

NUM_AESAS Number of AESA CHAs

The NUM_CHAS definition contains the total number of crypto hardware accelerators (CHAs) in SEC2 and is simply defined as the sum of the individual channels.

The device name is defined as /dev/sec2.

3.3.3 Operation ID (opId) Masks

Operation Ids can be broken down into two parts, the group or type of request and the request index or descriptor within a group or type. This is provided to help understand the structuring of the opIds. It is not specifically needed within a user application.

Table 4. Request Operation ID Mask

Define

Description

Value

DESC_TYPE_MASK

The mask for the group or type of an opId

0xFF00

DESC_NUM_MASK

The mask for the request index or descriptor within that group or type

0x00FF

3.3.4 Return Codes

A complete list of the error status results that may be returned to the callback routines follows:

Table 5. Callback Error Status Return Code

Define

SEC2_SUCCESS

SEC2_MEMORY_ALLOCATION

SEC2_INVALID_CHANNEL

SEC2_INVALID_CHA_TYPE SEC2_INVALID_OPERATION_ID SEC2_CHANNEL_NOT_AVAILABLE

Description

Value

Successful completion of request

0

Driver can’t obtain memory from the host operating

0xE004FFFF

system

 

Channel specification was out of range. This exists for

0xE004FFFE

legacy compatibility, and has no relevance for SEC2

 

Requested CHA doesn’t exist

0xE004FFFD

Requested opID is out of range for this request type

0xE004FFFC

Requested channel was not available. This error

0xE004FFFB

exists for legacy compatibility reasons, and has no

 

relevance for SEC2

 

SEC 2.0 Reference Device Driver User’s Guide, Rev. 0

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PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE

Freescale Semiconductor

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Freescale Semiconductor SEC2SWUG Operation ID opId Masks, Return Codes, Channel Defines, Request Operation ID Mask

SEC2SWUG specifications

Freescale Semiconductor, a prominent player in the semiconductor industry, has made significant strides in developing robust solutions tailored for the automotive and industrial sectors. One such innovation is the SEC2SWUG (Security Configuration to Software User Guide), a comprehensive framework designed to enhance security protocols across various applications.

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