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- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * Copyright (C) 2004 IBM Corporation
- * Copyright (C) 2015 Intel Corporation
- *
- * Authors:
- * Leendert van Doorn <[email protected]>
- * Dave Safford <[email protected]>
- * Reiner Sailer <[email protected]>
- * Kylene Hall <[email protected]>
- *
- * Maintained by: <[email protected]>
- *
- * Device driver for TCG/TCPA TPM (trusted platform module).
- * Specifications at www.trustedcomputinggroup.org
- */
- #ifndef __TPM_H__
- #define __TPM_H__
- #include <linux/module.h>
- #include <linux/delay.h>
- #include <linux/mutex.h>
- #include <linux/sched.h>
- #include <linux/platform_device.h>
- #include <linux/io.h>
- #include <linux/tpm.h>
- #include <linux/tpm_eventlog.h>
- #ifdef CONFIG_X86
- #include <asm/intel-family.h>
- #endif
- #define TPM_MINOR 224 /* officially assigned */
- #define TPM_BUFSIZE 4096
- #define TPM_NUM_DEVICES 65536
- #define TPM_RETRY 50
- enum tpm_timeout {
- TPM_TIMEOUT = 5, /* msecs */
- TPM_TIMEOUT_RETRY = 100, /* msecs */
- TPM_TIMEOUT_RANGE_US = 300, /* usecs */
- TPM_TIMEOUT_POLL = 1, /* msecs */
- TPM_TIMEOUT_USECS_MIN = 100, /* usecs */
- TPM_TIMEOUT_USECS_MAX = 500 /* usecs */
- };
- /* TPM addresses */
- enum tpm_addr {
- TPM_SUPERIO_ADDR = 0x2E,
- TPM_ADDR = 0x4E,
- };
- #define TPM_WARN_RETRY 0x800
- #define TPM_WARN_DOING_SELFTEST 0x802
- #define TPM_ERR_DEACTIVATED 0x6
- #define TPM_ERR_DISABLED 0x7
- #define TPM_ERR_FAILEDSELFTEST 0x1C
- #define TPM_ERR_INVALID_POSTINIT 38
- #define TPM_TAG_RQU_COMMAND 193
- /* TPM2 specific constants. */
- #define TPM2_SPACE_BUFFER_SIZE 16384 /* 16 kB */
- struct stclear_flags_t {
- __be16 tag;
- u8 deactivated;
- u8 disableForceClear;
- u8 physicalPresence;
- u8 physicalPresenceLock;
- u8 bGlobalLock;
- } __packed;
- struct tpm1_version {
- u8 major;
- u8 minor;
- u8 rev_major;
- u8 rev_minor;
- } __packed;
- struct tpm1_version2 {
- __be16 tag;
- struct tpm1_version version;
- } __packed;
- struct timeout_t {
- __be32 a;
- __be32 b;
- __be32 c;
- __be32 d;
- } __packed;
- struct duration_t {
- __be32 tpm_short;
- __be32 tpm_medium;
- __be32 tpm_long;
- } __packed;
- struct permanent_flags_t {
- __be16 tag;
- u8 disable;
- u8 ownership;
- u8 deactivated;
- u8 readPubek;
- u8 disableOwnerClear;
- u8 allowMaintenance;
- u8 physicalPresenceLifetimeLock;
- u8 physicalPresenceHWEnable;
- u8 physicalPresenceCMDEnable;
- u8 CEKPUsed;
- u8 TPMpost;
- u8 TPMpostLock;
- u8 FIPS;
- u8 operator;
- u8 enableRevokeEK;
- u8 nvLocked;
- u8 readSRKPub;
- u8 tpmEstablished;
- u8 maintenanceDone;
- u8 disableFullDALogicInfo;
- } __packed;
- typedef union {
- struct permanent_flags_t perm_flags;
- struct stclear_flags_t stclear_flags;
- __u8 owned;
- __be32 num_pcrs;
- struct tpm1_version version1;
- struct tpm1_version2 version2;
- __be32 manufacturer_id;
- struct timeout_t timeout;
- struct duration_t duration;
- } cap_t;
- enum tpm_capabilities {
- TPM_CAP_FLAG = 4,
- TPM_CAP_PROP = 5,
- TPM_CAP_VERSION_1_1 = 0x06,
- TPM_CAP_VERSION_1_2 = 0x1A,
- };
- enum tpm_sub_capabilities {
- TPM_CAP_PROP_PCR = 0x101,
- TPM_CAP_PROP_MANUFACTURER = 0x103,
- TPM_CAP_FLAG_PERM = 0x108,
- TPM_CAP_FLAG_VOL = 0x109,
- TPM_CAP_PROP_OWNER = 0x111,
- TPM_CAP_PROP_TIS_TIMEOUT = 0x115,
- TPM_CAP_PROP_TIS_DURATION = 0x120,
- };
- enum tpm2_pt_props {
- TPM2_PT_NONE = 0x00000000,
- TPM2_PT_GROUP = 0x00000100,
- TPM2_PT_FIXED = TPM2_PT_GROUP * 1,
- TPM2_PT_FAMILY_INDICATOR = TPM2_PT_FIXED + 0,
- TPM2_PT_LEVEL = TPM2_PT_FIXED + 1,
- TPM2_PT_REVISION = TPM2_PT_FIXED + 2,
- TPM2_PT_DAY_OF_YEAR = TPM2_PT_FIXED + 3,
- TPM2_PT_YEAR = TPM2_PT_FIXED + 4,
- TPM2_PT_MANUFACTURER = TPM2_PT_FIXED + 5,
- TPM2_PT_VENDOR_STRING_1 = TPM2_PT_FIXED + 6,
- TPM2_PT_VENDOR_STRING_2 = TPM2_PT_FIXED + 7,
- TPM2_PT_VENDOR_STRING_3 = TPM2_PT_FIXED + 8,
- TPM2_PT_VENDOR_STRING_4 = TPM2_PT_FIXED + 9,
- TPM2_PT_VENDOR_TPM_TYPE = TPM2_PT_FIXED + 10,
- TPM2_PT_FIRMWARE_VERSION_1 = TPM2_PT_FIXED + 11,
- TPM2_PT_FIRMWARE_VERSION_2 = TPM2_PT_FIXED + 12,
- TPM2_PT_INPUT_BUFFER = TPM2_PT_FIXED + 13,
- TPM2_PT_HR_TRANSIENT_MIN = TPM2_PT_FIXED + 14,
- TPM2_PT_HR_PERSISTENT_MIN = TPM2_PT_FIXED + 15,
- TPM2_PT_HR_LOADED_MIN = TPM2_PT_FIXED + 16,
- TPM2_PT_ACTIVE_SESSIONS_MAX = TPM2_PT_FIXED + 17,
- TPM2_PT_PCR_COUNT = TPM2_PT_FIXED + 18,
- TPM2_PT_PCR_SELECT_MIN = TPM2_PT_FIXED + 19,
- TPM2_PT_CONTEXT_GAP_MAX = TPM2_PT_FIXED + 20,
- TPM2_PT_NV_COUNTERS_MAX = TPM2_PT_FIXED + 22,
- TPM2_PT_NV_INDEX_MAX = TPM2_PT_FIXED + 23,
- TPM2_PT_MEMORY = TPM2_PT_FIXED + 24,
- TPM2_PT_CLOCK_UPDATE = TPM2_PT_FIXED + 25,
- TPM2_PT_CONTEXT_HASH = TPM2_PT_FIXED + 26,
- TPM2_PT_CONTEXT_SYM = TPM2_PT_FIXED + 27,
- TPM2_PT_CONTEXT_SYM_SIZE = TPM2_PT_FIXED + 28,
- TPM2_PT_ORDERLY_COUNT = TPM2_PT_FIXED + 29,
- TPM2_PT_MAX_COMMAND_SIZE = TPM2_PT_FIXED + 30,
- TPM2_PT_MAX_RESPONSE_SIZE = TPM2_PT_FIXED + 31,
- TPM2_PT_MAX_DIGEST = TPM2_PT_FIXED + 32,
- TPM2_PT_MAX_OBJECT_CONTEXT = TPM2_PT_FIXED + 33,
- TPM2_PT_MAX_SESSION_CONTEXT = TPM2_PT_FIXED + 34,
- TPM2_PT_PS_FAMILY_INDICATOR = TPM2_PT_FIXED + 35,
- TPM2_PT_PS_LEVEL = TPM2_PT_FIXED + 36,
- TPM2_PT_PS_REVISION = TPM2_PT_FIXED + 37,
- TPM2_PT_PS_DAY_OF_YEAR = TPM2_PT_FIXED + 38,
- TPM2_PT_PS_YEAR = TPM2_PT_FIXED + 39,
- TPM2_PT_SPLIT_MAX = TPM2_PT_FIXED + 40,
- TPM2_PT_TOTAL_COMMANDS = TPM2_PT_FIXED + 41,
- TPM2_PT_LIBRARY_COMMANDS = TPM2_PT_FIXED + 42,
- TPM2_PT_VENDOR_COMMANDS = TPM2_PT_FIXED + 43,
- TPM2_PT_NV_BUFFER_MAX = TPM2_PT_FIXED + 44,
- TPM2_PT_MODES = TPM2_PT_FIXED + 45,
- TPM2_PT_MAX_CAP_BUFFER = TPM2_PT_FIXED + 46,
- TPM2_PT_VAR = TPM2_PT_GROUP * 2,
- TPM2_PT_PERMANENT = TPM2_PT_VAR + 0,
- TPM2_PT_STARTUP_CLEAR = TPM2_PT_VAR + 1,
- TPM2_PT_HR_NV_INDEX = TPM2_PT_VAR + 2,
- TPM2_PT_HR_LOADED = TPM2_PT_VAR + 3,
- TPM2_PT_HR_LOADED_AVAIL = TPM2_PT_VAR + 4,
- TPM2_PT_HR_ACTIVE = TPM2_PT_VAR + 5,
- TPM2_PT_HR_ACTIVE_AVAIL = TPM2_PT_VAR + 6,
- TPM2_PT_HR_TRANSIENT_AVAIL = TPM2_PT_VAR + 7,
- TPM2_PT_HR_PERSISTENT = TPM2_PT_VAR + 8,
- TPM2_PT_HR_PERSISTENT_AVAIL = TPM2_PT_VAR + 9,
- TPM2_PT_NV_COUNTERS = TPM2_PT_VAR + 10,
- TPM2_PT_NV_COUNTERS_AVAIL = TPM2_PT_VAR + 11,
- TPM2_PT_ALGORITHM_SET = TPM2_PT_VAR + 12,
- TPM2_PT_LOADED_CURVES = TPM2_PT_VAR + 13,
- TPM2_PT_LOCKOUT_COUNTER = TPM2_PT_VAR + 14,
- TPM2_PT_MAX_AUTH_FAIL = TPM2_PT_VAR + 15,
- TPM2_PT_LOCKOUT_INTERVAL = TPM2_PT_VAR + 16,
- TPM2_PT_LOCKOUT_RECOVERY = TPM2_PT_VAR + 17,
- TPM2_PT_NV_WRITE_RECOVERY = TPM2_PT_VAR + 18,
- TPM2_PT_AUDIT_COUNTER_0 = TPM2_PT_VAR + 19,
- TPM2_PT_AUDIT_COUNTER_1 = TPM2_PT_VAR + 20,
- };
- /* 128 bytes is an arbitrary cap. This could be as large as TPM_BUFSIZE - 18
- * bytes, but 128 is still a relatively large number of random bytes and
- * anything much bigger causes users of struct tpm_cmd_t to start getting
- * compiler warnings about stack frame size. */
- #define TPM_MAX_RNG_DATA 128
- extern struct class *tpm_class;
- extern struct class *tpmrm_class;
- extern dev_t tpm_devt;
- extern const struct file_operations tpm_fops;
- extern const struct file_operations tpmrm_fops;
- extern struct idr dev_nums_idr;
- ssize_t tpm_transmit(struct tpm_chip *chip, u8 *buf, size_t bufsiz);
- int tpm_get_timeouts(struct tpm_chip *);
- int tpm_auto_startup(struct tpm_chip *chip);
- int tpm1_pm_suspend(struct tpm_chip *chip, u32 tpm_suspend_pcr);
- int tpm1_auto_startup(struct tpm_chip *chip);
- int tpm1_do_selftest(struct tpm_chip *chip);
- int tpm1_get_timeouts(struct tpm_chip *chip);
- unsigned long tpm1_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal);
- int tpm1_pcr_extend(struct tpm_chip *chip, u32 pcr_idx, const u8 *hash,
- const char *log_msg);
- int tpm1_pcr_read(struct tpm_chip *chip, u32 pcr_idx, u8 *res_buf);
- ssize_t tpm1_getcap(struct tpm_chip *chip, u32 subcap_id, cap_t *cap,
- const char *desc, size_t min_cap_length);
- int tpm1_get_random(struct tpm_chip *chip, u8 *out, size_t max);
- int tpm1_get_pcr_allocation(struct tpm_chip *chip);
- unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal);
- int tpm_pm_suspend(struct device *dev);
- int tpm_pm_resume(struct device *dev);
- static inline void tpm_msleep(unsigned int delay_msec)
- {
- usleep_range((delay_msec * 1000) - TPM_TIMEOUT_RANGE_US,
- delay_msec * 1000);
- };
- int tpm_chip_bootstrap(struct tpm_chip *chip);
- int tpm_chip_start(struct tpm_chip *chip);
- void tpm_chip_stop(struct tpm_chip *chip);
- struct tpm_chip *tpm_find_get_ops(struct tpm_chip *chip);
- struct tpm_chip *tpm_chip_alloc(struct device *dev,
- const struct tpm_class_ops *ops);
- struct tpm_chip *tpmm_chip_alloc(struct device *pdev,
- const struct tpm_class_ops *ops);
- int tpm_chip_register(struct tpm_chip *chip);
- void tpm_chip_unregister(struct tpm_chip *chip);
- void tpm_sysfs_add_device(struct tpm_chip *chip);
- #ifdef CONFIG_ACPI
- extern void tpm_add_ppi(struct tpm_chip *chip);
- #else
- static inline void tpm_add_ppi(struct tpm_chip *chip)
- {
- }
- #endif
- int tpm2_get_timeouts(struct tpm_chip *chip);
- int tpm2_pcr_read(struct tpm_chip *chip, u32 pcr_idx,
- struct tpm_digest *digest, u16 *digest_size_ptr);
- int tpm2_pcr_extend(struct tpm_chip *chip, u32 pcr_idx,
- struct tpm_digest *digests);
- int tpm2_get_random(struct tpm_chip *chip, u8 *dest, size_t max);
- ssize_t tpm2_get_tpm_pt(struct tpm_chip *chip, u32 property_id,
- u32 *value, const char *desc);
- ssize_t tpm2_get_pcr_allocation(struct tpm_chip *chip);
- int tpm2_auto_startup(struct tpm_chip *chip);
- void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type);
- unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal);
- int tpm2_probe(struct tpm_chip *chip);
- int tpm2_get_cc_attrs_tbl(struct tpm_chip *chip);
- int tpm2_find_cc(struct tpm_chip *chip, u32 cc);
- int tpm2_init_space(struct tpm_space *space, unsigned int buf_size);
- void tpm2_del_space(struct tpm_chip *chip, struct tpm_space *space);
- void tpm2_flush_space(struct tpm_chip *chip);
- int tpm2_prepare_space(struct tpm_chip *chip, struct tpm_space *space, u8 *cmd,
- size_t cmdsiz);
- int tpm2_commit_space(struct tpm_chip *chip, struct tpm_space *space, void *buf,
- size_t *bufsiz);
- int tpm_devs_add(struct tpm_chip *chip);
- void tpm_devs_remove(struct tpm_chip *chip);
- void tpm_bios_log_setup(struct tpm_chip *chip);
- void tpm_bios_log_teardown(struct tpm_chip *chip);
- int tpm_dev_common_init(void);
- void tpm_dev_common_exit(void);
- #endif
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