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tpm: Add some headers from the spec

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A following patch introduces EFI_TCG2_PROTOCOL.
Add the required TPMv2 headers to support it.

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Ilias Apalodimas 2020-11-11 11:18:10 +02:00 committed by Heinrich Schuchardt
parent 792aee1150
commit 915e3ae568
1 changed files with 77 additions and 0 deletions
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77
include/tpm-v2.h
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@ -1,6 +1,13 @@
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Defines APIs and structures that allow software to interact with a
* TPM2 device
*
* Copyright (c) 2020 Linaro
* Copyright (c) 2018 Bootlin
*
* https://trustedcomputinggroup.org/resource/tss-overview-common-structures-specification/
*
* Author: Miquel Raynal <miquel.raynal@bootlin.com>
*/
@ -11,6 +18,74 @@
#define TPM2_DIGEST_LEN 32
#define TPM2_MAX_PCRS 32
#define TPM2_PCR_SELECT_MAX ((TPM2_MAX_PCRS + 7) / 8)
#define TPM2_MAX_CAP_BUFFER 1024
#define TPM2_MAX_TPM_PROPERTIES ((TPM2_MAX_CAP_BUFFER - sizeof(u32) /* TPM2_CAP */ - \
sizeof(u32)) / sizeof(struct tpms_tagged_property))
/*
* 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 16
/* Definition of (UINT32) TPM2_CAP Constants */
#define TPM2_CAP_PCRS 0x00000005U
#define TPM2_CAP_TPM_PROPERTIES 0x00000006U
/* Definition of (UINT32) TPM2_PT Constants */
#define TPM2_PT_GROUP (u32)(0x00000100)
#define TPM2_PT_FIXED (u32)(TPM2_PT_GROUP * 1)
#define TPM2_PT_MANUFACTURER (u32)(TPM2_PT_FIXED + 5)
#define TPM2_PT_PCR_COUNT (u32)(TPM2_PT_FIXED + 18)
#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 {
u32 property;
u32 value;
} __packed;
/* TPMS_PCR_SELECTION Structure */
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 {
u32 count;
struct tpms_pcr_selection selection[TPM2_NUM_PCR_BANKS];
} __packed;
/* TPML_TAGGED_TPM_PROPERTY Structure */
struct tpml_tagged_tpm_property {
u32 count;
struct tpms_tagged_property tpm_property[TPM2_MAX_TPM_PROPERTIES];
} __packed;
/* TPMU_CAPABILITIES Union */
union tpmu_capabilities {
/*
* Non exhaustive. Only added the structs needed for our
* current code
*/
struct tpml_pcr_selection assigned_pcr;
struct tpml_tagged_tpm_property tpm_properties;
} __packed;
/* TPMS_CAPABILITY_DATA Structure */
struct tpms_capability_data {
u32 capability;
union tpmu_capabilities data;
} __packed;
/**
* TPM2 Structure Tags for command/response buffers.
*
@ -123,11 +198,13 @@ enum tpm2_return_codes {
* TPM2 algorithms.
*/
enum tpm2_algorithms {
TPM2_ALG_SHA1 = 0x04,
TPM2_ALG_XOR = 0x0A,
TPM2_ALG_SHA256 = 0x0B,
TPM2_ALG_SHA384 = 0x0C,
TPM2_ALG_SHA512 = 0x0D,
TPM2_ALG_NULL = 0x10,
TPM2_ALG_SM3_256 = 0x12,
};
/* NV index attributes */