Technical white paper UEFI Secure Boot on HP business notebooks, desktops, and workstations
Appendix
General UEFI requirements
The BIOS incorporated in the HP business notebooks, desktops, and workstations supporting Windows 8 conforms to the following sections of the UEFI 2.3.1 Class 2 specification:
2.3, 3.1, 4.3, 6.1 ~ 6.5, 7.1~7.5, 8.1, 8.2, 9.1, 9.5, 11.2 ~ 11.4, 11.8, 11.9, 12.4, 12.7, 12.8, 12.9, 18.5, 21.1, 21.3, 21.5, 27.1~27.8.
PCR boot measurements for notebook products
Table A1 lists the PCR boot measurements for notebook products. Section references indicated in Table A1 refer to the UEFI 2.3.1 Class 2 specification document.
Table A1..PCR boot measurements for hp business notebook products| PCR | Expected measurement | Actual measurement |
|
|
|
| PCR 0 | ||
| event type EV_S_CRTM_VERSION | EV_S_CRTM_VERSION |
| All Host Platform firmware using the | All Host Platform firmware using the event type |
| event type EV_POST_CODE | EV_POST_CODE |
| ACPI data using event type |
|
| EV_UEFI_HANDOFF_TABLES |
|
|
|
|
PCR 1 | Not used |
|
|
|
|
PCR 2 | Not used | Currently measuring FV(??) |
|
| |
| controlled options/UEFI |
|
|
| drivers |
|
|
|
|
|
PCR 3 | Not used |
|
PCR 4 | If the BIOS is configured or designed to |
| not record each device the BIOS |
| attempts to boot, an |
| EV_OMIT_BOOT_DEVICE_EVENTS |
| event MUST be measured once. See |
| Section 11.3.1 (Event Types). |
| The BIOS MUST record the EV_ACTION |
| event “Calling INT 19h” or the |
| EV_UEFI_ACTION event “Calling UEFI |
| Application from Boot Option.” See |
| Section 11.3.3 (EV_ACTION Event |
| Types). |
The BIOS MUST record the EV_ACTION event “Calling INT 19h” or the EV_UEFI_ACTION event “Calling UEFI Application from Boot Option.” See Section 11.3.3 (EV_ACTION Event Types).
PCR 5 | Not used | Calling UEFI application event, GPT |
|
|
|
PCR 6 | Not used (UEFI Secure Boot data in | Secure Boot variables |
| spec but MS indicates that they want |
|
| that in PCR 7) |
|
|
|
|
PCR 7 | Not used |
|
|
|
|
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