forked from luck/tmp_suning_uos_patched
4d23cc323c
Unlike the device driver support for TPM 1.2, the TPM 2.0 does not support the securityfs pseudo files for displaying the firmware event log. This patch enables support for providing the TPM 2.0 event log in binary form. TPM 2.0 event log supports a crypto agile format that records multiple digests, which is different from TPM 1.2. This patch enables the tpm_bios_log_setup for TPM 2.0 and adds the event log parser which understand the TPM 2.0 crypto agile format. Signed-off-by: Nayna Jain <nayna@linux.vnet.ibm.com> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Tested-by: Kenneth Goldman <kgold@linux.vnet.ibm.com> Tested-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
138 lines
2.4 KiB
C
138 lines
2.4 KiB
C
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#ifndef __TPM_EVENTLOG_H__
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#define __TPM_EVENTLOG_H__
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#include <crypto/hash_info.h>
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#define TCG_EVENT_NAME_LEN_MAX 255
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#define MAX_TEXT_EVENT 1000 /* Max event string length */
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#define ACPI_TCPA_SIG "TCPA" /* 0x41504354 /'TCPA' */
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#define TPM2_ACTIVE_PCR_BANKS 3
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#ifdef CONFIG_PPC64
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#define do_endian_conversion(x) be32_to_cpu(x)
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#else
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#define do_endian_conversion(x) x
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#endif
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enum bios_platform_class {
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BIOS_CLIENT = 0x00,
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BIOS_SERVER = 0x01,
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};
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struct tcpa_event {
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u32 pcr_index;
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u32 event_type;
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u8 pcr_value[20]; /* SHA1 */
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u32 event_size;
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u8 event_data[0];
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};
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enum tcpa_event_types {
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PREBOOT = 0,
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POST_CODE,
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UNUSED,
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NO_ACTION,
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SEPARATOR,
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ACTION,
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EVENT_TAG,
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SCRTM_CONTENTS,
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SCRTM_VERSION,
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CPU_MICROCODE,
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PLATFORM_CONFIG_FLAGS,
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TABLE_OF_DEVICES,
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COMPACT_HASH,
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IPL,
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IPL_PARTITION_DATA,
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NONHOST_CODE,
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NONHOST_CONFIG,
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NONHOST_INFO,
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};
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struct tcpa_pc_event {
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u32 event_id;
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u32 event_size;
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u8 event_data[0];
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};
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enum tcpa_pc_event_ids {
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SMBIOS = 1,
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BIS_CERT,
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POST_BIOS_ROM,
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ESCD,
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CMOS,
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NVRAM,
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OPTION_ROM_EXEC,
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OPTION_ROM_CONFIG,
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OPTION_ROM_MICROCODE = 10,
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S_CRTM_VERSION,
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S_CRTM_CONTENTS,
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POST_CONTENTS,
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HOST_TABLE_OF_DEVICES,
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};
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/* http://www.trustedcomputinggroup.org/tcg-efi-protocol-specification/ */
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struct tcg_efi_specid_event_algs {
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u16 alg_id;
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u16 digest_size;
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} __packed;
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struct tcg_efi_specid_event {
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u8 signature[16];
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u32 platform_class;
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u8 spec_version_minor;
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u8 spec_version_major;
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u8 spec_errata;
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u8 uintnsize;
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u32 num_algs;
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struct tcg_efi_specid_event_algs digest_sizes[TPM2_ACTIVE_PCR_BANKS];
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u8 vendor_info_size;
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u8 vendor_info[0];
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} __packed;
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struct tcg_pcr_event {
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u32 pcr_idx;
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u32 event_type;
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u8 digest[20];
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u32 event_size;
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u8 event[0];
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} __packed;
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struct tcg_event_field {
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u32 event_size;
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u8 event[0];
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} __packed;
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struct tcg_pcr_event2 {
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u32 pcr_idx;
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u32 event_type;
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u32 count;
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struct tpm2_digest digests[TPM2_ACTIVE_PCR_BANKS];
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struct tcg_event_field event;
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} __packed;
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extern const struct seq_operations tpm2_binary_b_measurements_seqops;
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#if defined(CONFIG_ACPI)
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int tpm_read_log_acpi(struct tpm_chip *chip);
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#else
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static inline int tpm_read_log_acpi(struct tpm_chip *chip)
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{
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return -ENODEV;
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}
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#endif
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#if defined(CONFIG_OF)
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int tpm_read_log_of(struct tpm_chip *chip);
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#else
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static inline int tpm_read_log_of(struct tpm_chip *chip)
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{
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return -ENODEV;
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}
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#endif
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int tpm_bios_log_setup(struct tpm_chip *chip);
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void tpm_bios_log_teardown(struct tpm_chip *chip);
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#endif
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