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Diffstat (limited to 'drivers/firmware/qcom/Kconfig')
| -rw-r--r-- | drivers/firmware/qcom/Kconfig | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/drivers/firmware/qcom/Kconfig b/drivers/firmware/qcom/Kconfig new file mode 100644 index 000000000..c7f8413ab --- /dev/null +++ b/drivers/firmware/qcom/Kconfig @@ -0,0 +1,97 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# For a description of the syntax of this configuration file, +# see Documentation/kbuild/kconfig-language.rst. +# + +menu "Qualcomm firmware drivers" + +config QCOM_PAS + tristate "Qualcomm generic PAS interface driver" + help + Enable the generic Peripheral Authentication Service (PAS) provided + by the firmware. It acts as the common layer with different TZ + backends plugged in whether it's an SCM implementation or a proper + TEE bus based PAS service implementation. + +config QCOM_PAS_TEE + tristate "Qualcomm PAS TEE interface driver" + select QCOM_PAS + depends on TEE + depends on !CPU_BIG_ENDIAN + default m if ARCH_QCOM + help + Enable the generic Peripheral Authentication Service (PAS) provided + by the firmware TEE implementation as the backend. + +config QCOM_SCM + tristate "Qualcomm PAS SCM interface driver" + select QCOM_PAS + select QCOM_TZMEM + default y if ARCH_QCOM + +config QCOM_TZMEM + tristate + select GENERIC_ALLOCATOR + +choice + prompt "TrustZone interface memory allocator mode" + depends on QCOM_TZMEM + default QCOM_TZMEM_MODE_GENERIC + help + Selects the mode of the memory allocator providing memory buffers of + suitable format for sharing with the TrustZone. If in doubt, select + 'Generic'. + +config QCOM_TZMEM_MODE_GENERIC + bool "Generic" + help + Use the generic allocator mode. The memory is page-aligned, non-cachable + and physically contiguous. + +config QCOM_TZMEM_MODE_SHMBRIDGE + bool "SHM Bridge" + help + Use Qualcomm Shared Memory Bridge. The memory has the same alignment as + in the 'Generic' allocator but is also explicitly marked as an SHM Bridge + buffer. + + With this selected, all buffers passed to the TrustZone must be allocated + using the TZMem allocator or else the TrustZone will refuse to use them. + +endchoice + +config QCOM_QSEECOM + bool "Qualcomm QSEECOM interface driver" + depends on QCOM_SCM=y + select AUXILIARY_BUS + help + Various Qualcomm SoCs have a Secure Execution Environment (SEE) running + in the Trust Zone. This module provides an interface to that via the + QSEECOM mechanism, using SCM calls. + + The QSEECOM interface allows, among other things, access to applications + running in the SEE. An example of such an application is 'uefisecapp', + which is required to access UEFI variables on certain systems. If + selected, the interface will also attempt to detect and register client + devices for supported applications. + + Select Y here to enable the QSEECOM interface driver. + +config QCOM_QSEECOM_UEFISECAPP + bool "Qualcomm SEE UEFI Secure App client driver" + depends on QCOM_QSEECOM + depends on EFI + help + Various Qualcomm SoCs do not allow direct access to EFI variables. + Instead, these need to be accessed via the UEFI Secure Application + (uefisecapp), residing in the Secure Execution Environment (SEE). + + This module provides a client driver for uefisecapp, installing efivar + operations to allow the kernel accessing EFI variables, and via that also + provide user-space with access to EFI variables via efivarfs. + + Select Y here to provide access to EFI variables on the aforementioned + platforms. + +endmenu |