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Diffstat (limited to 'drivers/tee/optee/Kconfig')
| -rw-r--r-- | drivers/tee/optee/Kconfig | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/tee/optee/Kconfig b/drivers/tee/optee/Kconfig new file mode 100644 index 000000000..70898bbd5 --- /dev/null +++ b/drivers/tee/optee/Kconfig @@ -0,0 +1,26 @@ +# SPDX-License-Identifier: GPL-2.0-only +# OP-TEE Trusted Execution Environment Configuration +config OPTEE + tristate "OP-TEE" + depends on HAVE_ARM_SMCCC + depends on MMU + help + This implements the OP-TEE Trusted Execution Environment (TEE) + driver. + +config OPTEE_INSECURE_LOAD_IMAGE + bool "Load OP-TEE image as firmware" + default n + depends on OPTEE && ARM64 + help + This loads the BL32 image for OP-TEE as firmware when the driver is + probed. This returns -EPROBE_DEFER until the firmware is loadable from + the filesystem which is determined by checking the system_state until + it is in SYSTEM_RUNNING. This also requires enabling the corresponding + option in Trusted Firmware for Arm. The documentation there explains + the security threat associated with enabling this as well as + mitigations at the firmware and platform level. + https://trustedfirmware-a.readthedocs.io/en/latest/threat_model/threat_model.html + + Additional documentation on kernel security risks are at + Documentation/staging/tee.rst. |