1# SPDX-License-Identifier: GPL-2.0-only
2#
3# For a description of the syntax of this configuration file,
4# see Documentation/kbuild/kconfig-language.rst.
5#
6
7menu "Qualcomm firmware drivers"
8
9config QCOM_SCM
10	tristate
11
12config QCOM_SCM_DOWNLOAD_MODE_DEFAULT
13	bool "Qualcomm download mode enabled by default"
14	depends on QCOM_SCM
15	help
16	  A device with "download mode" enabled will upon an unexpected
17	  warm-restart enter a special debug mode that allows the user to
18	  "download" memory content over USB for offline postmortem analysis.
19	  The feature can be enabled/disabled on the kernel command line.
20
21	  Say Y here to enable "download mode" by default.
22
23config QCOM_QSEECOM
24	bool "Qualcomm QSEECOM interface driver"
25	depends on QCOM_SCM=y
26	select AUXILIARY_BUS
27	help
28	  Various Qualcomm SoCs have a Secure Execution Environment (SEE) running
29	  in the Trust Zone. This module provides an interface to that via the
30	  QSEECOM mechanism, using SCM calls.
31
32	  The QSEECOM interface allows, among other things, access to applications
33	  running in the SEE. An example of such an application is 'uefisecapp',
34	  which is required to access UEFI variables on certain systems. If
35	  selected, the interface will also attempt to detect and register client
36	  devices for supported applications.
37
38	  Select Y here to enable the QSEECOM interface driver.
39
40config QCOM_QSEECOM_UEFISECAPP
41	bool "Qualcomm SEE UEFI Secure App client driver"
42	depends on QCOM_QSEECOM
43	depends on EFI
44	help
45	  Various Qualcomm SoCs do not allow direct access to EFI variables.
46	  Instead, these need to be accessed via the UEFI Secure Application
47	  (uefisecapp), residing in the Secure Execution Environment (SEE).
48
49	  This module provides a client driver for uefisecapp, installing efivar
50	  operations to allow the kernel accessing EFI variables, and via that also
51	  provide user-space with access to EFI variables via efivarfs.
52
53	  Select Y here to provide access to EFI variables on the aforementioned
54	  platforms.
55
56endmenu
57