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_CR50 90 tristate "TPM Interface Specification 2.0 Interface (I2C - CR50)" 91 depends on I2C 92 select TCG_CR50 93 help 94 This is a driver for the Google cr50 I2C TPM interface which is a 95 custom microcontroller and requires a custom i2c protocol interface 96 to handle the limitations of the hardware. To compile this driver 97 as a module, choose M here; the module will be called tcg_tis_i2c_cr50. 98 99config TCG_TIS_I2C_ATMEL 100 tristate "TPM Interface Specification 1.2 Interface (I2C - Atmel)" 101 depends on I2C 102 help 103 If you have an Atmel I2C TPM security chip say Yes and it will be 104 accessible from within Linux. 105 To compile this driver as a module, choose M here; the module will 106 be called tpm_tis_i2c_atmel. 107 108config TCG_TIS_I2C_INFINEON 109 tristate "TPM Interface Specification 1.2 Interface (I2C - Infineon)" 110 depends on I2C 111 help 112 If you have a TPM security chip that is compliant with the 113 TCG TIS 1.2 TPM specification and Infineon's I2C Protocol Stack 114 Specification 0.20 say Yes and it will be accessible from within 115 Linux. 116 To compile this driver as a module, choose M here; the module 117 will be called tpm_i2c_infineon. 118 119config TCG_TIS_I2C_NUVOTON 120 tristate "TPM Interface Specification 1.2 Interface (I2C - Nuvoton)" 121 depends on I2C 122 help 123 If you have a TPM security chip with an I2C interface from 124 Nuvoton Technology Corp. say Yes and it will be accessible 125 from within Linux. 126 To compile this driver as a module, choose M here; the module 127 will be called tpm_i2c_nuvoton. 128 129config TCG_NSC 130 tristate "National Semiconductor TPM Interface" 131 depends on X86 132 help 133 If you have a TPM security chip from National Semiconductor 134 say Yes and it will be accessible from within Linux. To 135 compile this driver as a module, choose M here; the module 136 will be called tpm_nsc. 137 138config TCG_ATMEL 139 tristate "Atmel TPM Interface" 140 depends on PPC64 || HAS_IOPORT_MAP 141 help 142 If you have a TPM security chip from Atmel say Yes and it 143 will be accessible from within Linux. To compile this driver 144 as a module, choose M here; the module will be called tpm_atmel. 145 146config TCG_INFINEON 147 tristate "Infineon Technologies TPM Interface" 148 depends on PNP 149 help 150 If you have a TPM security chip from Infineon Technologies 151 (either SLD 9630 TT 1.1 or SLB 9635 TT 1.2) say Yes and it 152 will be accessible from within Linux. 153 To compile this driver as a module, choose M here; the module 154 will be called tpm_infineon. 155 Further information on this driver and the supported hardware 156 can be found at http://www.trust.rub.de/projects/linux-device-driver-infineon-tpm/ 157 158config TCG_IBMVTPM 159 tristate "IBM VTPM Interface" 160 depends on PPC_PSERIES 161 help 162 If you have IBM virtual TPM (VTPM) support say Yes and it 163 will be accessible from within Linux. To compile this driver 164 as a module, choose M here; the module will be called tpm_ibmvtpm. 165 166config TCG_XEN 167 tristate "XEN TPM Interface" 168 depends on TCG_TPM && XEN 169 select XEN_XENBUS_FRONTEND 170 help 171 If you want to make TPM support available to a Xen user domain, 172 say Yes and it will be accessible from within Linux. See 173 the manpages for xl, xl.conf, and docs/misc/vtpm.txt in 174 the Xen source repository for more details. 175 To compile this driver as a module, choose M here; the module 176 will be called xen-tpmfront. 177 178config TCG_CRB 179 tristate "TPM 2.0 CRB Interface" 180 depends on ACPI 181 help 182 If you have a TPM security chip that is compliant with the 183 TCG CRB 2.0 TPM specification say Yes and it will be accessible 184 from within Linux. To compile this driver as a module, choose 185 M here; the module will be called tpm_crb. 186 187config TCG_VTPM_PROXY 188 tristate "VTPM Proxy Interface" 189 depends on TCG_TPM 190 help 191 This driver proxies for an emulated TPM (vTPM) running in userspace. 192 A device /dev/vtpmx is provided that creates a device pair 193 /dev/vtpmX and a server-side file descriptor on which the vTPM 194 can receive commands. 195 196config TCG_FTPM_TEE 197 tristate "TEE based fTPM Interface" 198 depends on TEE && OPTEE 199 help 200 This driver proxies for firmware TPM running in TEE. 201 202source "drivers/char/tpm/st33zp24/Kconfig" 203endif # TCG_TPM 204