1# SPDX-License-Identifier: GPL-2.0-only 2# 3# TPM device configuration 4# 5 6menuconfig TCG_TPM 7 tristate "TPM Hardware Support" 8 depends on HAS_IOMEM 9 imply SECURITYFS 10 select CRYPTO 11 select CRYPTO_HASH_INFO 12 help 13 If you have a TPM security chip in your system, which 14 implements the Trusted Computing Group's specification, 15 say Yes and it will be accessible from within Linux. For 16 more information see <http://www.trustedcomputinggroup.org>. 17 An implementation of the Trusted Software Stack (TSS), the 18 userspace enablement piece of the specification, can be 19 obtained at: <http://sourceforge.net/projects/trousers>. To 20 compile this driver as a module, choose M here; the module 21 will be called tpm. If unsure, say N. 22 Notes: 23 1) For more TPM drivers enable CONFIG_PNP, CONFIG_ACPI 24 and CONFIG_PNPACPI. 25 2) Without ACPI enabled, the BIOS event log won't be accessible, 26 which is required to validate the PCR 0-7 values. 27 28if TCG_TPM 29 30config HW_RANDOM_TPM 31 bool "TPM HW Random Number Generator support" 32 depends on TCG_TPM && HW_RANDOM && !(TCG_TPM=y && HW_RANDOM=m) 33 default y 34 help 35 This setting exposes the TPM's Random Number Generator as a hwrng 36 device. This allows the kernel to collect randomness from the TPM at 37 boot, and provides the TPM randomines in /dev/hwrng. 38 39 If unsure, say Y. 40 41config TCG_TIS_CORE 42 tristate 43 help 44 TCG TIS TPM core driver. It implements the TPM TCG TIS logic and hooks 45 into the TPM kernel APIs. Physical layers will register against it. 46 47config TCG_TIS 48 tristate "TPM Interface Specification 1.2 Interface / TPM 2.0 FIFO Interface" 49 depends on X86 || OF 50 select TCG_TIS_CORE 51 help 52 If you have a TPM security chip that is compliant with the 53 TCG TIS 1.2 TPM specification (TPM1.2) or the TCG PTP FIFO 54 specification (TPM2.0) say Yes and it will be accessible from 55 within Linux. To compile this driver as a module, choose M here; 56 the module will be called tpm_tis. 57 58config TCG_TIS_SPI 59 tristate "TPM Interface Specification 1.3 Interface / TPM 2.0 FIFO Interface - (SPI)" 60 depends on SPI 61 select TCG_TIS_CORE 62 help 63 If you have a TPM security chip which is connected to a regular, 64 non-tcg SPI master (i.e. most embedded platforms) that is compliant with the 65 TCG TIS 1.3 TPM specification (TPM1.2) or the TCG PTP FIFO 66 specification (TPM2.0) say Yes and it will be accessible from 67 within Linux. To compile this driver as a module, choose M here; 68 the module will be called tpm_tis_spi. 69 70config TCG_TIS_SPI_CR50 71 bool "Cr50 SPI Interface" 72 depends on TCG_TIS_SPI 73 help 74 If you have a H1 secure module running Cr50 firmware on SPI bus, 75 say Yes and it will be accessible from within Linux. 76 77config TCG_TIS_SYNQUACER 78 tristate "TPM Interface Specification 1.2 Interface / TPM 2.0 FIFO Interface (MMIO - SynQuacer)" 79 depends on ARCH_SYNQUACER 80 select TCG_TIS_CORE 81 help 82 If you have a TPM security chip that is compliant with the 83 TCG TIS 1.2 TPM specification (TPM1.2) or the TCG PTP FIFO 84 specification (TPM2.0) say Yes and it will be accessible from 85 within Linux on Socionext SynQuacer platform. 86 To compile this driver as a module, choose M here; 87 the module will be called tpm_tis_synquacer. 88 89config TCG_TIS_I2C_ATMEL 90 tristate "TPM Interface Specification 1.2 Interface (I2C - Atmel)" 91 depends on I2C 92 help 93 If you have an Atmel I2C TPM security chip say Yes and it will be 94 accessible from within Linux. 95 To compile this driver as a module, choose M here; the module will 96 be called tpm_tis_i2c_atmel. 97 98config TCG_TIS_I2C_INFINEON 99 tristate "TPM Interface Specification 1.2 Interface (I2C - Infineon)" 100 depends on I2C 101 help 102 If you have a TPM security chip that is compliant with the 103 TCG TIS 1.2 TPM specification and Infineon's I2C Protocol Stack 104 Specification 0.20 say Yes and it will be accessible from within 105 Linux. 106 To compile this driver as a module, choose M here; the module 107 will be called tpm_i2c_infineon. 108 109config TCG_TIS_I2C_NUVOTON 110 tristate "TPM Interface Specification 1.2 Interface (I2C - Nuvoton)" 111 depends on I2C 112 help 113 If you have a TPM security chip with an I2C interface from 114 Nuvoton Technology Corp. say Yes and it will be accessible 115 from within Linux. 116 To compile this driver as a module, choose M here; the module 117 will be called tpm_i2c_nuvoton. 118 119config TCG_NSC 120 tristate "National Semiconductor TPM Interface" 121 depends on X86 122 help 123 If you have a TPM security chip from National Semiconductor 124 say Yes and it will be accessible from within Linux. To 125 compile this driver as a module, choose M here; the module 126 will be called tpm_nsc. 127 128config TCG_ATMEL 129 tristate "Atmel TPM Interface" 130 depends on PPC64 || HAS_IOPORT_MAP 131 help 132 If you have a TPM security chip from Atmel say Yes and it 133 will be accessible from within Linux. To compile this driver 134 as a module, choose M here; the module will be called tpm_atmel. 135 136config TCG_INFINEON 137 tristate "Infineon Technologies TPM Interface" 138 depends on PNP 139 help 140 If you have a TPM security chip from Infineon Technologies 141 (either SLD 9630 TT 1.1 or SLB 9635 TT 1.2) say Yes and it 142 will be accessible from within Linux. 143 To compile this driver as a module, choose M here; the module 144 will be called tpm_infineon. 145 Further information on this driver and the supported hardware 146 can be found at http://www.trust.rub.de/projects/linux-device-driver-infineon-tpm/ 147 148config TCG_IBMVTPM 149 tristate "IBM VTPM Interface" 150 depends on PPC_PSERIES 151 help 152 If you have IBM virtual TPM (VTPM) support say Yes and it 153 will be accessible from within Linux. To compile this driver 154 as a module, choose M here; the module will be called tpm_ibmvtpm. 155 156config TCG_XEN 157 tristate "XEN TPM Interface" 158 depends on TCG_TPM && XEN 159 select XEN_XENBUS_FRONTEND 160 help 161 If you want to make TPM support available to a Xen user domain, 162 say Yes and it will be accessible from within Linux. See 163 the manpages for xl, xl.conf, and docs/misc/vtpm.txt in 164 the Xen source repository for more details. 165 To compile this driver as a module, choose M here; the module 166 will be called xen-tpmfront. 167 168config TCG_CRB 169 tristate "TPM 2.0 CRB Interface" 170 depends on ACPI 171 help 172 If you have a TPM security chip that is compliant with the 173 TCG CRB 2.0 TPM specification say Yes and it will be accessible 174 from within Linux. To compile this driver as a module, choose 175 M here; the module will be called tpm_crb. 176 177config TCG_VTPM_PROXY 178 tristate "VTPM Proxy Interface" 179 depends on TCG_TPM 180 help 181 This driver proxies for an emulated TPM (vTPM) running in userspace. 182 A device /dev/vtpmx is provided that creates a device pair 183 /dev/vtpmX and a server-side file descriptor on which the vTPM 184 can receive commands. 185 186config TCG_FTPM_TEE 187 tristate "TEE based fTPM Interface" 188 depends on TEE && OPTEE 189 help 190 This driver proxies for firmware TPM running in TEE. 191 192source "drivers/char/tpm/st33zp24/Kconfig" 193endif # TCG_TPM 194