mirror of
https://github.com/u-boot/u-boot.git
synced 2024-11-26 05:34:30 +08:00
bedbb383e1
tpm_tis_spi.c directly includes tpm_tis.h and tpm-v2.h which both define the same enums (see e.g. TPM_ACCESS_VALID). Add an #ifndef to prevent redeclaration errors. Signed-off-by: Johannes Holland <johannes.holland@infineon.com>
134 lines
2.6 KiB
C
134 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Copyright (C) 2011 Infineon Technologies
|
|
*
|
|
* Authors:
|
|
* Peter Huewe <huewe.external@infineon.com>
|
|
*
|
|
* Version: 2.1.1
|
|
*
|
|
* Description:
|
|
* Device driver for TCG/TCPA TPM (trusted platform module).
|
|
* Specifications at www.trustedcomputinggroup.org
|
|
*
|
|
* It is based on the Linux kernel driver tpm.c from Leendert van
|
|
* Dorn, Dave Safford, Reiner Sailer, and Kyleen Hall.
|
|
*/
|
|
|
|
#ifndef _TPM_TIS_I2C_H
|
|
#define _TPM_TIS_I2C_H
|
|
|
|
#include <linux/compiler.h>
|
|
#include <linux/types.h>
|
|
|
|
enum tpm_timeout {
|
|
TPM_TIMEOUT_MS = 5,
|
|
TIS_SHORT_TIMEOUT_MS = 750,
|
|
TIS_LONG_TIMEOUT_MS = 2000,
|
|
SLEEP_DURATION_US = 60,
|
|
SLEEP_DURATION_LONG_US = 210,
|
|
};
|
|
|
|
/* Size of external transmit buffer (used in tpm_transmit)*/
|
|
#define TPM_BUFSIZE 4096
|
|
|
|
/* Index of Count field in TPM response buffer */
|
|
#define TPM_RSP_SIZE_BYTE 2
|
|
#define TPM_RSP_RC_BYTE 6
|
|
|
|
struct tpm_chip {
|
|
int is_open;
|
|
int locality;
|
|
u32 vend_dev;
|
|
u8 rid;
|
|
unsigned long timeout_a, timeout_b, timeout_c, timeout_d; /* msec */
|
|
ulong chip_type;
|
|
};
|
|
|
|
struct tpm_input_header {
|
|
__be16 tag;
|
|
__be32 length;
|
|
__be32 ordinal;
|
|
} __packed;
|
|
|
|
struct tpm_output_header {
|
|
__be16 tag;
|
|
__be32 length;
|
|
__be32 return_code;
|
|
} __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;
|
|
|
|
union cap_t {
|
|
struct timeout_t timeout;
|
|
struct duration_t duration;
|
|
};
|
|
|
|
struct tpm_getcap_params_in {
|
|
__be32 cap;
|
|
__be32 subcap_size;
|
|
__be32 subcap;
|
|
} __packed;
|
|
|
|
struct tpm_getcap_params_out {
|
|
__be32 cap_size;
|
|
union cap_t cap;
|
|
} __packed;
|
|
|
|
union tpm_cmd_header {
|
|
struct tpm_input_header in;
|
|
struct tpm_output_header out;
|
|
};
|
|
|
|
union tpm_cmd_params {
|
|
struct tpm_getcap_params_out getcap_out;
|
|
struct tpm_getcap_params_in getcap_in;
|
|
};
|
|
|
|
struct tpm_cmd_t {
|
|
union tpm_cmd_header header;
|
|
union tpm_cmd_params params;
|
|
} __packed;
|
|
|
|
/* Max number of iterations after i2c NAK */
|
|
#define MAX_COUNT 3
|
|
|
|
#ifndef __TPM_V2_H
|
|
/*
|
|
* Max number of iterations after i2c NAK for 'long' commands
|
|
*
|
|
* We need this especially for sending TPM_READY, since the cleanup after the
|
|
* transtion to the ready state may take some time, but it is unpredictable
|
|
* how long it will take.
|
|
*/
|
|
#define MAX_COUNT_LONG 50
|
|
|
|
enum tis_access {
|
|
TPM_ACCESS_VALID = 0x80,
|
|
TPM_ACCESS_ACTIVE_LOCALITY = 0x20,
|
|
TPM_ACCESS_REQUEST_PENDING = 0x04,
|
|
TPM_ACCESS_REQUEST_USE = 0x02,
|
|
};
|
|
|
|
enum tis_status {
|
|
TPM_STS_VALID = 0x80,
|
|
TPM_STS_COMMAND_READY = 0x40,
|
|
TPM_STS_GO = 0x20,
|
|
TPM_STS_DATA_AVAIL = 0x10,
|
|
TPM_STS_DATA_EXPECT = 0x08,
|
|
};
|
|
#endif
|
|
|
|
#endif
|