* Provide a link to 'TPM 2.0 Library Specification' * Remove outdated comment for TPM2_NUM_PCR_BANKS. The value 16 can be found in the current standard TCG TSS 2.0 Overview and Common Structures Specification 1.0, rev 10 * Describe some of the structures in Sphinx style.
Signed-off-by: Heinrich Schuchardt <[email protected]> --- include/tpm-v2.h | 42 +++++++++++++++++++++++++++++++++--------- 1 file changed, 33 insertions(+), 9 deletions(-) diff --git a/include/tpm-v2.h b/include/tpm-v2.h index 4fd19c52fd7..0f388b26496 100644 --- a/include/tpm-v2.h +++ b/include/tpm-v2.h @@ -6,6 +6,11 @@ * Copyright (c) 2020 Linaro * Copyright (c) 2018 Bootlin * + * The structures are described in + * Trusted Platform Module Library Part 2: Structures + * http://tcg.tjn.chef.causewaynow.com/resource/tpm-library-specification/ + * + * C header files are listed in * https://trustedcomputinggroup.org/resource/tss-overview-common-structures-specification/ * * Author: Miquel Raynal <[email protected]> @@ -34,12 +39,8 @@ struct udevice; #define TPM2_HDR_LEN 10 -/* - * We deviate from this draft of the specification by increasing the value of - * TPM2_NUM_PCR_BANKS from 3 to 16 to ensure compatibility with TPM2 - * implementations that have enabled a larger than typical number of PCR - * banks. This larger value for TPM2_NUM_PCR_BANKS is expected to be included - * in a future revision of the specification. +/** + * define TPM2_NUM_PCR_BANKS - number of PCR banks */ #define TPM2_NUM_PCR_BANKS 16 @@ -55,20 +56,43 @@ struct udevice; #define TPM2_PT_MAX_COMMAND_SIZE (u32)(TPM2_PT_FIXED + 30) #define TPM2_PT_MAX_RESPONSE_SIZE (u32)(TPM2_PT_FIXED + 31) -/* TPMS_TAGGED_PROPERTY Structure */ +/** + * struct tpms_tagged_property - TPMS_TAGGED_PROPERTY structure + * + * This structure is returned by TPM2_GetCapability() to report + * a u32 property value. + * + * @property: property identifier + * @value: value of the property + */ struct tpms_tagged_property { u32 property; u32 value; } __packed; -/* TPMS_PCR_SELECTION Structure */ +/** + * struct tpms_pcr_selection - TPMS_PCR_SELECTION structure + * + * This structure allows to specify a hash algorithm and a list of + * selected PCRs. A PCR is selected by setting the related bit in + * @pcr_select to 1. + * + * @hash: hash algorithm associated with the selection + * @size_of_select: size in bytes of the @pcr_select array + * @pcr_select: bit map of selected PCRs + */ struct tpms_pcr_selection { u16 hash; u8 size_of_select; u8 pcr_select[TPM2_PCR_SELECT_MAX]; } __packed; -/* TPML_PCR_SELECTION Structure */ +/** + * struct tpml_pcr_selection - TPML_PCR_SELECTION structure + * + * @count: number of selection structures, may be zero + * @selection: list of selections + */ struct tpml_pcr_selection { u32 count; struct tpms_pcr_selection selection[TPM2_NUM_PCR_BANKS]; -- 2.47.1
