diff options
Diffstat (limited to 'drivers/tee/optee/Kconfig')
| -rw-r--r-- | drivers/tee/optee/Kconfig | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/drivers/tee/optee/Kconfig b/drivers/tee/optee/Kconfig index 3c59e19029be..50d2051f7f20 100644 --- a/drivers/tee/optee/Kconfig +++ b/drivers/tee/optee/Kconfig @@ -1,15 +1,32 @@ +# 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 + depends on RPMB || !RPMB help This implements the OP-TEE Trusted Execution Environment (TEE) driver. -config OPTEE_SHM_NUM_PRIV_PAGES - int "Private Shared Memory Pages" - default 1 - depends on OPTEE +config OPTEE_INSECURE_LOAD_IMAGE + bool "Load OP-TEE image as firmware" + default n + depends on OPTEE && ARM64 help - This sets the number of private shared memory pages to be - used by OP-TEE TEE driver. + 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/tee/op-tee.rst. + +config OPTEE_STATIC_PROTMEM_POOL + bool + depends on HAS_IOMEM && TEE_DMABUF_HEAPS + default y |