FWTS Serial Port Console Redirection Table test failing with Modern System IRQ

[Parasuraman, KarthikeyanX]

Hi,

Greetings.

I am checking  the error from one of the tests , spcr



spcr: SPCR Serial Port Console Redirection Table test.

--------------------------------------------------------------------------------

Test 1 of 3: SPCR Serial Port Console Redirection Table test.

Serial Interface: 16550 compatible

FAILED [HIGH] SPCRIllegalIRQ: Test 1, SPCR PC-AT compatible IRQ 0x10 is invalid

Baud Rate:        115200

Terminal Type:    VT100+


We have checked the code logic from FWTS tool as shown below :





    /* Check PC-AT compatible UART IRQs */



    if (spcr->interrupt_type & 1) {



       switch (spcr->irq) {



           case 2 ...  7:



           case 9 ... 12:



           case 14 ... 15:



                  break;



           default:



            passed = false;



            fwts_failed(fw, LOG_LEVEL_HIGH,



                "SPCRIllegalIRQ",



                "SPCR PC-AT compatible IRQ 0x%" PRIx8 " is invalid", spcr->irq);



            break;



        }



    }



In our Code, we are updating irq value as per our requirement,

mSpcrTable->Irq = 16;


We can understand that tool code expects only legacy interrupts PC-AT IRQs like (0x00-0x0F) and 0-1, 8, 13, 16-255 are reserved IRQs.

Could you please clarify why fwts is specifically checking for legacy interrupts and flagging IRQ 16 as an issue?
Since Our platform & Modern System follows an Advanced interrupt management system, and IRQ 16 is valid within this context.

Regards,
Karthikeyan P


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