| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| #pragma once |
| |
| #include "macro-fundamental.h" |
| |
| /* The various TPM PCRs we measure into from sd-stub and sd-boot. */ |
| |
| /* This TPM PCR is where we extend the sd-stub "payloads" into, before using them. i.e. the kernel ELF image, |
| * embedded initrd, and so on. In contrast to PCR 4 (which also contains this data, given the whole |
| * surrounding PE image is measured into it) this should be reasonably pre-calculatable, because it *only* |
| * consists of static data from the kernel PE image. */ |
| #define TPM_PCR_INDEX_KERNEL_IMAGE 11U |
| |
| /* This TPM PCR is where sd-stub extends the kernel command line and any passed credentials into. */ |
| #define TPM_PCR_INDEX_KERNEL_PARAMETERS 12U |
| |
| /* This TPM PCR is where we extend the initrd sysext images into which we pass to the booted kernel */ |
| #define TPM_PCR_INDEX_INITRD_SYSEXTS 13U |
| |
| /* This TPM PCR is where we measure the root fs volume key (and maybe /var/'s) if it is split off */ |
| #define TPM_PCR_INDEX_VOLUME_KEY 15U |
| |
| /* List of PE sections that have special meaning for us in unified kernels. This is the canonical order in |
| * which we measure the sections into TPM PCR 11 (see above). PLEASE DO NOT REORDER! */ |
| typedef enum UnifiedSection { |
| UNIFIED_SECTION_LINUX, |
| UNIFIED_SECTION_OSREL, |
| UNIFIED_SECTION_CMDLINE, |
| UNIFIED_SECTION_INITRD, |
| UNIFIED_SECTION_SPLASH, |
| UNIFIED_SECTION_DTB, |
| UNIFIED_SECTION_PCRSIG, |
| UNIFIED_SECTION_PCRPKEY, |
| _UNIFIED_SECTION_MAX, |
| } UnifiedSection; |
| |
| extern const char* const unified_sections[_UNIFIED_SECTION_MAX + 1]; |
| |
| static inline bool unified_section_measure(UnifiedSection section) { |
| /* Don't include the PCR signature in the PCR measurements, since they sign the expected result of |
| * the measurement, and hence shouldn't be input to it. */ |
| return section >= 0 && section < _UNIFIED_SECTION_MAX && section != UNIFIED_SECTION_PCRSIG; |
| } |