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Cannot find a legal location....

trigger

 Hi there, 

 during floorplan using FE I get the following warning message :

**WARN: (SOCSP-270):    Cannot find a legal location for MASTER CELL BUX20. Check the library cell definition and floorplan.

Actually  I got plenty of these messages for a different cells...Could You point me to a document or guide where I'll be able to read more about this warning...or give some explanation about it?

I'm confused cause  when I'm running the script (I'm using scripts for every step for the digital flow - synthesis, floorplan, placement, etc...) on another machine which actually uses a little older version of the FE I do not get this message...so I do not know which one is correct and what causes the warning message...I'll be glad on any help...

Thanks for Your time,

Regards... 

 

 

Parents

  •  Hi Kari,

     thanks for the reply...

    The SITE defined is 'core'...it looks like:

    MACRO BUX20
        CLASS CORE ;
        FOREIGN BUX20 0 0 ;
        ORIGIN 0.000 0.000 ;
        SIZE 18.200 BY 13.000 ;
        SYMMETRY X Y ;
        SITE core ;

         ..... 

     ...but at the technology LEF file nothing is mentioned about SITE core...Does it has to be..? I get a warning about this:

    'Physical library does not contain description of any core site' 

    At the first look it seems that at the floorplan there isn't rows from that kind - SITE...about the open room place....You mean is there overlaping between rows and blockages for example..? If so...no..there is no overlaping

     

    During synthesis when LEF file is read I get another one info message :

    Not all cells of logical library exist in physical library.
    <PHY-291>.
     All cells of physical library exist in logical library. <PHY-294>

     

    I do not if this could be part of the problem..cause I get this message on the two machines...

     

    I'll be glad on any help from Your side...

     

    Thanks.... 

     

     

     

Reply

  •  Hi Kari,

     thanks for the reply...

    The SITE defined is 'core'...it looks like:

    MACRO BUX20
        CLASS CORE ;
        FOREIGN BUX20 0 0 ;
        ORIGIN 0.000 0.000 ;
        SIZE 18.200 BY 13.000 ;
        SYMMETRY X Y ;
        SITE core ;

         ..... 

     ...but at the technology LEF file nothing is mentioned about SITE core...Does it has to be..? I get a warning about this:

    'Physical library does not contain description of any core site' 

    At the first look it seems that at the floorplan there isn't rows from that kind - SITE...about the open room place....You mean is there overlaping between rows and blockages for example..? If so...no..there is no overlaping

     

    During synthesis when LEF file is read I get another one info message :

    Not all cells of logical library exist in physical library.
    <PHY-291>.
     All cells of physical library exist in logical library. <PHY-294>

     

    I do not if this could be part of the problem..cause I get this message on the two machines...

     

    I'll be glad on any help from Your side...

     

    Thanks.... 

     

     

     

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