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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
commit55944e5e40b1be2afc4855d8d2baf4b73d1876b5 (patch)
tree33f869f55a1b149e9b7c2b7e201867ca5dd52992 /src/fundamental/tpm2-pcr.h
parentInitial commit. (diff)
downloadsystemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.tar.xz
systemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.zip
Adding upstream version 255.4.upstream/255.4
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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-rw-r--r--src/fundamental/tpm2-pcr.h51
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diff --git a/src/fundamental/tpm2-pcr.h b/src/fundamental/tpm2-pcr.h
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+/* 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. */
+
+enum {
+ /* The following names for PCRs 0…7 are based on the names in the "TCG PC Client Specific Platform
+ * Firmware Profile Specification"
+ * (https://trustedcomputinggroup.org/resource/pc-client-specific-platform-firmware-profile-specification/) */
+ TPM2_PCR_PLATFORM_CODE = 0,
+ TPM2_PCR_PLATFORM_CONFIG = 1,
+ TPM2_PCR_EXTERNAL_CODE = 2,
+ TPM2_PCR_EXTERNAL_CONFIG = 3,
+ TPM2_PCR_BOOT_LOADER_CODE = 4,
+ TPM2_PCR_BOOT_LOADER_CONFIG = 5,
+ TPM2_PCR_HOST_PLATFORM = 6,
+ TPM2_PCR_SECURE_BOOT_POLICY = 7,
+
+ /* The following names for PCRs 9…15 are based on the "Linux TPM PCR Registry"
+ (https://uapi-group.org/specifications/specs/linux_tpm_pcr_registry/) */
+ TPM2_PCR_KERNEL_INITRD = 9,
+ TPM2_PCR_IMA = 10,
+
+ /* systemd: 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. */
+ TPM2_PCR_KERNEL_BOOT = 11,
+
+ /* systemd: This TPM PCR is where sd-stub extends the kernel command line and any passed credentials into. */
+ TPM2_PCR_KERNEL_CONFIG = 12,
+
+ /* systemd: This TPM PCR is where we extend the initrd sysext images into which we pass to the booted kernel */
+ TPM2_PCR_SYSEXTS = 13,
+ TPM2_PCR_SHIM_POLICY = 14,
+
+ /* systemd: This TPM PCR is where we measure the root fs volume key (and maybe /var/'s) if it is split off */
+ TPM2_PCR_SYSTEM_IDENTITY = 15,
+
+ /* As per "TCG PC Client Specific Platform Firmware Profile Specification" again, see above */
+ TPM2_PCR_DEBUG = 16,
+ TPM2_PCR_APPLICATION_SUPPORT = 23,
+};
+
+/* The tag used for EV_EVENT_TAG event log records covering the boot loader config */
+#define LOADER_CONF_EVENT_TAG_ID UINT32_C(0xf5bc582a)
+
+/* The tag used for EV_EVENT_TAG event log records covering Devicetree blobs */
+#define DEVICETREE_ADDON_EVENT_TAG_ID UINT32_C(0x6c46f751)