2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 menu "Firmware Drivers"
11 config ARM_PSCI_CHECKER
12 bool "ARM PSCI checker"
13 depends on ARM_PSCI_FW && HOTPLUG_CPU && CPU_IDLE && !TORTURE_TEST
15 Run the PSCI checker during startup. This checks that hotplug and
16 suspend operations work correctly when using PSCI.
18 The torture tests may interfere with the PSCI checker by turning CPUs
19 on and off through hotplug, so for now torture tests and PSCI checker
20 are mutually exclusive.
22 config ARM_SCMI_PROTOCOL
23 bool "ARM System Control and Management Interface (SCMI) Message Protocol"
24 depends on ARM || ARM64 || COMPILE_TEST
27 ARM System Control and Management Interface (SCMI) protocol is a
28 set of operating system-independent software interfaces that are
29 used in system management. SCMI is extensible and currently provides
30 interfaces for: Discovery and self-description of the interfaces
31 it supports, Power domain management which is the ability to place
32 a given device or domain into the various power-saving states that
33 it supports, Performance management which is the ability to control
34 the performance of a domain that is composed of compute engines
35 such as application processors and other accelerators, Clock
36 management which is the ability to set and inquire rates on platform
37 managed clocks and Sensor management which is the ability to read
38 sensor data, and be notified of sensor value.
40 This protocol library provides interface for all the client drivers
41 making use of the features offered by the SCMI.
43 config ARM_SCMI_POWER_DOMAIN
44 tristate "SCMI power domain driver"
45 depends on ARM_SCMI_PROTOCOL || (COMPILE_TEST && OF)
47 select PM_GENERIC_DOMAINS if PM
49 This enables support for the SCMI power domains which can be
50 enabled or disabled via the SCP firmware
52 This driver can also be built as a module. If so, the module
53 will be called scmi_pm_domain. Note this may needed early in boot
54 before rootfs may be available.
56 config ARM_SCPI_PROTOCOL
57 tristate "ARM System Control and Power Interface (SCPI) Message Protocol"
58 depends on ARM || ARM64 || COMPILE_TEST
61 System Control and Power Interface (SCPI) Message Protocol is
62 defined for the purpose of communication between the Application
63 Cores(AP) and the System Control Processor(SCP). The MHU peripheral
64 provides a mechanism for inter-processor communication between SCP
67 SCP controls most of the power managament on the Application
68 Processors. It offers control and management of: the core/cluster
69 power states, various power domain DVFS including the core/cluster,
70 certain system clocks configuration, thermal sensors and many
73 This protocol library provides interface for all the client drivers
74 making use of the features offered by the SCP.
76 config ARM_SCPI_POWER_DOMAIN
77 tristate "SCPI power domain driver"
78 depends on ARM_SCPI_PROTOCOL || (COMPILE_TEST && OF)
80 select PM_GENERIC_DOMAINS if PM
82 This enables support for the SCPI power domains which can be
83 enabled or disabled via the SCP firmware
85 config ARM_SDE_INTERFACE
86 bool "ARM Software Delegated Exception Interface (SDEI)"
89 The Software Delegated Exception Interface (SDEI) is an ARM
90 standard for registering callbacks from the platform firmware
91 into the OS. This is typically used to implement RAS notifications.
94 tristate "BIOS Enhanced Disk Drive calls determine boot disk"
97 Say Y or M here if you want to enable BIOS Enhanced Disk Drive
98 Services real mode BIOS calls to determine which disk
99 BIOS tries boot from. This information is then exported via sysfs.
101 This option is experimental and is known to fail to boot on some
102 obscure configurations. Most disk controller BIOS vendors do
103 not yet implement this feature.
106 bool "Sets default behavior for EDD detection to off"
110 Say Y if you want EDD disabled by default, even though it is compiled into the
111 kernel. Say N if you want EDD enabled by default. EDD can be dynamically set
112 using the kernel parameter 'edd={on|skipmbr|off}'.
114 config FIRMWARE_MEMMAP
115 bool "Add firmware-provided memory map to sysfs" if EXPERT
118 Add the firmware-provided (unmodified) memory map to /sys/firmware/memmap.
119 That memory map is used for example by kexec to set up parameter area
120 for the next kernel, but can also be used for debugging purposes.
122 See also Documentation/ABI/testing/sysfs-firmware-memmap.
125 bool "Console device selection via EFI PCDP or HCDP table"
126 depends on ACPI && EFI && IA64
129 If your firmware supplies the PCDP table, and you want to
130 automatically use the primary console device it describes
131 as the Linux console, say Y here.
133 If your firmware supplies the HCDP table, and you want to
134 use the first serial port it describes as the Linux console,
135 say Y here. If your EFI ConOut path contains only a UART
136 device, it will become the console automatically. Otherwise,
137 you must specify the "console=hcdp" kernel boot argument.
139 Neither the PCDP nor the HCDP affects naming of serial devices,
140 so a serial console may be /dev/ttyS0, /dev/ttyS1, etc, depending
141 on how the driver discovers devices.
143 You must also enable the appropriate drivers (serial, VGA, etc.)
145 See DIG64_HCDPv20_042804.pdf available from
146 <http://www.dig64.org/specifications/>
149 tristate "BIOS update support for DELL systems via sysfs"
152 select FW_LOADER_USER_HELPER
154 Say m if you want to have the option of updating the BIOS for your
155 DELL system. Note you need a Dell OpenManage or Dell Update package (DUP)
156 supporting application to communicate with the BIOS regarding the new
157 image for the image update to take effect.
158 See <file:Documentation/dell_rbu.txt> for more details on the driver.
161 tristate "Dell Systems Management Base Driver"
164 The Dell Systems Management Base Driver provides a sysfs interface
165 for systems management software to perform System Management
166 Interrupts (SMIs) and Host Control Actions (system power cycle or
167 power off after OS shutdown) on certain Dell systems.
169 See <file:Documentation/dcdbas.txt> for more details on the driver
170 and the Dell systems on which Dell systems management software makes
173 Say Y or M here to enable the driver for use by Dell systems
174 management software such as Dell OpenManage.
177 bool "Export DMI identification via sysfs to userspace"
181 Say Y here if you want to query SMBIOS/DMI system identification
182 information from userspace through /sys/class/dmi/id/ or if you want
183 DMI-based module auto-loading.
186 tristate "DMI table support in sysfs"
187 depends on SYSFS && DMI
190 Say Y or M here to enable the exporting of the raw DMI table
191 data via sysfs. This is useful for consuming the data without
192 requiring any access to /dev/mem at all. Tables are found
193 under /sys/firmware/dmi when this option is enabled and
196 config DMI_SCAN_MACHINE_NON_EFI_FALLBACK
199 config ISCSI_IBFT_FIND
200 bool "iSCSI Boot Firmware Table Attributes"
201 depends on X86 && ISCSI_IBFT
204 This option enables the kernel to find the region of memory
205 in which the ISCSI Boot Firmware Table (iBFT) resides. This
206 is necessary for iSCSI Boot Firmware Table Attributes module to work
210 tristate "iSCSI Boot Firmware Table Attributes module"
211 select ISCSI_BOOT_SYSFS
212 select ISCSI_IBFT_FIND if X86
213 depends on ACPI && SCSI && SCSI_LOWLEVEL
216 This option enables support for detection and exposing of iSCSI
217 Boot Firmware Table (iBFT) via sysfs to userspace. If you wish to
218 detect iSCSI boot parameters dynamically during system boot, say Y.
221 config RASPBERRYPI_FIRMWARE
222 tristate "Raspberry Pi Firmware Driver"
223 depends on BCM2835_MBOX
225 This option enables support for communicating with the firmware on the
229 tristate "QEMU fw_cfg device support in sysfs"
230 depends on SYSFS && (ARM || ARM64 || PPC_PMAC || SPARC || X86)
231 depends on HAS_IOPORT_MAP
234 Say Y or M here to enable the exporting of the QEMU firmware
235 configuration (fw_cfg) file entries via sysfs. Entries are
236 found under /sys/firmware/fw_cfg when this option is enabled
239 config FW_CFG_SYSFS_CMDLINE
240 bool "QEMU fw_cfg device parameter parsing"
241 depends on FW_CFG_SYSFS
243 Allow the qemu_fw_cfg device to be initialized via the kernel
244 command line or using a module parameter.
245 WARNING: Using incorrect parameters (base address in particular)
246 may crash your system.
250 depends on ARM || ARM64
251 select RESET_CONTROLLER
255 depends on QCOM_SCM && ARM
259 depends on QCOM_SCM && ARM64
261 config QCOM_SCM_DOWNLOAD_MODE_DEFAULT
262 bool "Qualcomm download mode enabled by default"
265 A device with "download mode" enabled will upon an unexpected
266 warm-restart enter a special debug mode that allows the user to
267 "download" memory content over USB for offline postmortem analysis.
268 The feature can be enabled/disabled on the kernel command line.
270 Say Y here to enable "download mode" by default.
272 config TI_SCI_PROTOCOL
273 tristate "TI System Control Interface (TISCI) Message Protocol"
274 depends on TI_MESSAGE_MANAGER
276 TI System Control Interface (TISCI) Message Protocol is used to manage
277 compute systems such as ARM, DSP etc with the system controller in
278 complex System on Chip(SoC) such as those found on certain keystone
279 generation SoC from TI.
281 System controller provides various facilities including power
282 management function support.
284 This protocol library is used by client drivers to use the features
285 provided by the system controller.
287 config HAVE_ARM_SMCCC
290 source "drivers/firmware/broadcom/Kconfig"
291 source "drivers/firmware/google/Kconfig"
292 source "drivers/firmware/efi/Kconfig"
293 source "drivers/firmware/meson/Kconfig"
294 source "drivers/firmware/tegra/Kconfig"