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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/tee/optee/Kconfig
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/tee/optee/Kconfig')
-rw-r--r--drivers/tee/optee/Kconfig26
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/tee/optee/Kconfig b/drivers/tee/optee/Kconfig
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+# 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.