Access Type with user-defined properties with SystemRDL

[Xinan Huang]

Hi there,

Not sure if this is possible with the current standards, but I'd like to create a user defined property with its type set as accesstype.

ie.

property some_rw_type {
  type = accesstype;
  component = reg;
};

Thanks!

[kock]

Hi,

This is a bit off topic since this is an IP-XACT forum. Perhaps an SystemRDL expert can answer this.

Best regards,
Erwin

[Xinan Huang]

Thanks Erwin! Unfortunately I couldn't seem to find the particular section for SystemRDL, and decided this section of the forum is the most appropriate to post such topic; If you could point the direction as to where I can post this question that would be awesome! 

Thanks!

Huang

[Richard Weber]

Hi Huang,

I tried your code example:

property some_rw_type {
  type = accesstype;
  component = reg;
};

csrCompile: ERROR: in file 'accessType.rdl' line 2:
csrCompile:        syntax error at:
csrCompile:        'accesstype'

The SystemRDL 2.0 grammar does not allow for accesstype as the data type of a user defined property.

I don't remember a specific reason that the SystemRDL committee chose not to include accesstype for user defined properties in SystemRDL 2.0 other than no member requested it and we were short on time and resources.

As a workaround I would suggest storing accesstype as a string or an enumeration:

property some_rw_type {
  type = string;
  component = reg;
};
enum AccessType_Enum {
RW; R; W; NA;
};
property another_rw_type {
  type = AccessType_Enum;
  component = reg;
};

 

Rich