1 # SPDX-License-Identifier: GPL-2.0-only
3 # For a description of the syntax of this configuration file,
4 # see Documentation/kbuild/kconfig-language.rst.
7 menu "Firmware Drivers"
9 config ARM_SCMI_PROTOCOL
10 bool "ARM System Control and Management Interface (SCMI) Message Protocol"
11 depends on ARM || ARM64 || COMPILE_TEST
14 ARM System Control and Management Interface (SCMI) protocol is a
15 set of operating system-independent software interfaces that are
16 used in system management. SCMI is extensible and currently provides
17 interfaces for: Discovery and self-description of the interfaces
18 it supports, Power domain management which is the ability to place
19 a given device or domain into the various power-saving states that
20 it supports, Performance management which is the ability to control
21 the performance of a domain that is composed of compute engines
22 such as application processors and other accelerators, Clock
23 management which is the ability to set and inquire rates on platform
24 managed clocks and Sensor management which is the ability to read
25 sensor data, and be notified of sensor value.
27 This protocol library provides interface for all the client drivers
28 making use of the features offered by the SCMI.
30 config ARM_SCMI_POWER_DOMAIN
31 tristate "SCMI power domain driver"
32 depends on ARM_SCMI_PROTOCOL || (COMPILE_TEST && OF)
34 select PM_GENERIC_DOMAINS if PM
36 This enables support for the SCMI power domains which can be
37 enabled or disabled via the SCP firmware
39 This driver can also be built as a module. If so, the module
40 will be called scmi_pm_domain. Note this may needed early in boot
41 before rootfs may be available.
43 config ARM_SCPI_PROTOCOL
44 tristate "ARM System Control and Power Interface (SCPI) Message Protocol"
45 depends on ARM || ARM64 || COMPILE_TEST
48 System Control and Power Interface (SCPI) Message Protocol is
49 defined for the purpose of communication between the Application
50 Cores(AP) and the System Control Processor(SCP). The MHU peripheral
51 provides a mechanism for inter-processor communication between SCP
54 SCP controls most of the power managament on the Application
55 Processors. It offers control and management of: the core/cluster
56 power states, various power domain DVFS including the core/cluster,
57 certain system clocks configuration, thermal sensors and many
60 This protocol library provides interface for all the client drivers
61 making use of the features offered by the SCP.
63 config ARM_SCPI_POWER_DOMAIN
64 tristate "SCPI power domain driver"
65 depends on ARM_SCPI_PROTOCOL || (COMPILE_TEST && OF)
67 select PM_GENERIC_DOMAINS if PM
69 This enables support for the SCPI power domains which can be
70 enabled or disabled via the SCP firmware
72 config ARM_SDE_INTERFACE
73 bool "ARM Software Delegated Exception Interface (SDEI)"
76 The Software Delegated Exception Interface (SDEI) is an ARM
77 standard for registering callbacks from the platform firmware
78 into the OS. This is typically used to implement RAS notifications.
81 tristate "BIOS Enhanced Disk Drive calls determine boot disk"
84 Say Y or M here if you want to enable BIOS Enhanced Disk Drive
85 Services real mode BIOS calls to determine which disk
86 BIOS tries boot from. This information is then exported via sysfs.
88 This option is experimental and is known to fail to boot on some
89 obscure configurations. Most disk controller BIOS vendors do
90 not yet implement this feature.
93 bool "Sets default behavior for EDD detection to off"
97 Say Y if you want EDD disabled by default, even though it is compiled into the
98 kernel. Say N if you want EDD enabled by default. EDD can be dynamically set
99 using the kernel parameter 'edd={on|skipmbr|off}'.
101 config FIRMWARE_MEMMAP
102 bool "Add firmware-provided memory map to sysfs" if EXPERT
105 Add the firmware-provided (unmodified) memory map to /sys/firmware/memmap.
106 That memory map is used for example by kexec to set up parameter area
107 for the next kernel, but can also be used for debugging purposes.
109 See also Documentation/ABI/testing/sysfs-firmware-memmap.
112 bool "Console device selection via EFI PCDP or HCDP table"
113 depends on ACPI && EFI && IA64
116 If your firmware supplies the PCDP table, and you want to
117 automatically use the primary console device it describes
118 as the Linux console, say Y here.
120 If your firmware supplies the HCDP table, and you want to
121 use the first serial port it describes as the Linux console,
122 say Y here. If your EFI ConOut path contains only a UART
123 device, it will become the console automatically. Otherwise,
124 you must specify the "console=hcdp" kernel boot argument.
126 Neither the PCDP nor the HCDP affects naming of serial devices,
127 so a serial console may be /dev/ttyS0, /dev/ttyS1, etc, depending
128 on how the driver discovers devices.
130 You must also enable the appropriate drivers (serial, VGA, etc.)
132 See DIG64_HCDPv20_042804.pdf available from
133 <http://www.dig64.org/specifications/>
136 bool "Export DMI identification via sysfs to userspace"
140 Say Y here if you want to query SMBIOS/DMI system identification
141 information from userspace through /sys/class/dmi/id/ or if you want
142 DMI-based module auto-loading.
145 tristate "DMI table support in sysfs"
146 depends on SYSFS && DMI
149 Say Y or M here to enable the exporting of the raw DMI table
150 data via sysfs. This is useful for consuming the data without
151 requiring any access to /dev/mem at all. Tables are found
152 under /sys/firmware/dmi when this option is enabled and
155 config DMI_SCAN_MACHINE_NON_EFI_FALLBACK
158 config ISCSI_IBFT_FIND
159 bool "iSCSI Boot Firmware Table Attributes"
160 depends on X86 && ISCSI_IBFT
163 This option enables the kernel to find the region of memory
164 in which the ISCSI Boot Firmware Table (iBFT) resides. This
165 is necessary for iSCSI Boot Firmware Table Attributes module to work
169 tristate "iSCSI Boot Firmware Table Attributes module"
170 select ISCSI_BOOT_SYSFS
171 select ISCSI_IBFT_FIND if X86
172 depends on ACPI && SCSI && SCSI_LOWLEVEL
175 This option enables support for detection and exposing of iSCSI
176 Boot Firmware Table (iBFT) via sysfs to userspace. If you wish to
177 detect iSCSI boot parameters dynamically during system boot, say Y.
180 config RASPBERRYPI_FIRMWARE
181 tristate "Raspberry Pi Firmware Driver"
182 depends on BCM2835_MBOX
184 This option enables support for communicating with the firmware on the
188 tristate "QEMU fw_cfg device support in sysfs"
189 depends on SYSFS && (ARM || ARM64 || PPC_PMAC || SPARC || X86)
190 depends on HAS_IOPORT_MAP
193 Say Y or M here to enable the exporting of the QEMU firmware
194 configuration (fw_cfg) file entries via sysfs. Entries are
195 found under /sys/firmware/fw_cfg when this option is enabled
198 config FW_CFG_SYSFS_CMDLINE
199 bool "QEMU fw_cfg device parameter parsing"
200 depends on FW_CFG_SYSFS
202 Allow the qemu_fw_cfg device to be initialized via the kernel
203 command line or using a module parameter.
204 WARNING: Using incorrect parameters (base address in particular)
205 may crash your system.
207 config INTEL_STRATIX10_SERVICE
208 tristate "Intel Stratix10 Service Layer"
209 depends on ARCH_STRATIX10 && HAVE_ARM_SMCCC
212 Intel Stratix10 service layer runs at privileged exception level,
213 interfaces with the service providers (FPGA manager is one of them)
214 and manages secure monitor call to communicate with secure monitor
215 software at secure monitor exception level.
217 Say Y here if you want Stratix10 service layer support.
219 config INTEL_STRATIX10_RSU
220 tristate "Intel Stratix10 Remote System Update"
221 depends on INTEL_STRATIX10_SERVICE
223 The Intel Remote System Update (RSU) driver exposes interfaces
224 access through the Intel Service Layer to user space via sysfs
225 device attribute nodes. The RSU interfaces report/control some of
226 the optional RSU features of the Stratix 10 SoC FPGA.
228 The RSU provides a way for customers to update the boot
229 configuration of a Stratix 10 SoC device with significantly reduced
230 risk of corrupting the bitstream storage and bricking the system.
232 Enable RSU support if you are using an Intel SoC FPGA with the RSU
233 feature enabled and you want Linux user space control.
235 Say Y here if you want Intel RSU support.
239 depends on ARM || ARM64
240 select RESET_CONTROLLER
244 depends on QCOM_SCM && ARM
248 depends on QCOM_SCM && ARM64
250 config QCOM_SCM_DOWNLOAD_MODE_DEFAULT
251 bool "Qualcomm download mode enabled by default"
254 A device with "download mode" enabled will upon an unexpected
255 warm-restart enter a special debug mode that allows the user to
256 "download" memory content over USB for offline postmortem analysis.
257 The feature can be enabled/disabled on the kernel command line.
259 Say Y here to enable "download mode" by default.
261 config TI_SCI_PROTOCOL
262 tristate "TI System Control Interface (TISCI) Message Protocol"
263 depends on TI_MESSAGE_MANAGER
265 TI System Control Interface (TISCI) Message Protocol is used to manage
266 compute systems such as ARM, DSP etc with the system controller in
267 complex System on Chip(SoC) such as those found on certain keystone
268 generation SoC from TI.
270 System controller provides various facilities including power
271 management function support.
273 This protocol library is used by client drivers to use the features
274 provided by the system controller.
276 config TRUSTED_FOUNDATIONS
277 bool "Trusted Foundations secure monitor support"
278 depends on ARM && CPU_V7
280 Some devices (including most early Tegra-based consumer devices on
281 the market) are booted with the Trusted Foundations secure monitor
282 active, requiring some core operations to be performed by the secure
283 monitor instead of the kernel.
285 This option allows the kernel to invoke the secure monitor whenever
286 required on devices using Trusted Foundations. See the functions and
287 comments in linux/firmware/trusted_foundations.h or the device tree
288 bindings for "tlm,trusted-foundations" for details on how to use it.
290 Choose N if you don't know what this is about.
292 config TURRIS_MOX_RWTM
293 tristate "Turris Mox rWTM secure firmware driver"
294 depends on ARCH_MVEBU || COMPILE_TEST
295 depends on HAS_DMA && OF
298 select ARMADA_37XX_RWTM_MBOX
300 This driver communicates with the firmware on the Cortex-M3 secure
301 processor of the Turris Mox router. Enable if you are building for
302 Turris Mox, and you will be able to read the device serial number and
303 other manufacturing data and also utilize the Entropy Bit Generator
304 for hardware random number generation.
306 config HAVE_ARM_SMCCC
309 source "drivers/firmware/psci/Kconfig"
310 source "drivers/firmware/broadcom/Kconfig"
311 source "drivers/firmware/google/Kconfig"
312 source "drivers/firmware/efi/Kconfig"
313 source "drivers/firmware/imx/Kconfig"
314 source "drivers/firmware/meson/Kconfig"
315 source "drivers/firmware/tegra/Kconfig"
316 source "drivers/firmware/xilinx/Kconfig"