Firmware/fwts_server Test 27 Fail on Systems with Sierra Forest CPU's

Bug Description

This test if failing with the following error on systems Sierra Forest CPU's

FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, _SB_.UB00.PRT element 0 is
expected to end with 0xFFFF, got 0x20000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, _SB.UB00.PRT element 0 is
expected to end with 0xFFFF, got 0x20000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, _SB.UB00.PRT element 0 is
expected to end with 0xFFFF, got 0x20000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, _SB.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x20000.

To Reproduce

1. Install canonical-certification-server
2. Run the testsuite certify-ubuntu-server
3. Observed the failure in firmware/fwts_server

Environment

Noble 24.04

Relevant log output

Test 27 of 209: Test _PRT (PCI Routing Table).
PASSED: Test 27, \_SB_.DI00._PRT correctly returned a sane looking package.
PASSED: Test 27, \_SB_.DI00.CPM0._PRT correctly returned a sane looking package.
...
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x20000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x20000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x20000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x20000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x50000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x50000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x50000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x50000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x60000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x60000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x60000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x60000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x70000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x70000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x70000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x70000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x80000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x80000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x80000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x80000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x90000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x90000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x90000.
FAILED [CRITICAL] Method_PRTBadSubElement: Test 27, \_SB_.UB00._PRT element 0 is
expected to end with 0xFFFF, got 0x90000.

Additional context

No response

Start by reproducing Test 27, the _PRT PCI Routing Table check, through the certify-ubuntu-server suite and inspect the firmware/fwts_server test path. Compare the Sierra Forest failures for SB.UB00._PRT with the expected routing-table format. Done means Test 27 no longer reports these failures on affected systems while existing checks remain valid.