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_SCPI_PROTOCOL
12 tristate "ARM System Control and Power Interface (SCPI) Message Protocol"
15 System Control and Power Interface (SCPI) Message Protocol is
16 defined for the purpose of communication between the Application
17 Cores(AP) and the System Control Processor(SCP). The MHU peripheral
18 provides a mechanism for inter-processor communication between SCP
21 SCP controls most of the power managament on the Application
22 Processors. It offers control and management of: the core/cluster
23 power states, various power domain DVFS including the core/cluster,
24 certain system clocks configuration, thermal sensors and many
27 This protocol library provides interface for all the client drivers
28 making use of the features offered by the SCP.
30 config ARM_SCPI_POWER_DOMAIN
31 tristate "SCPI power domain driver"
32 depends on ARM_SCPI_PROTOCOL || (COMPILE_TEST && OF)
34 select PM_GENERIC_DOMAINS if PM
36 This enables support for the SCPI power domains which can be
37 enabled or disabled via the SCP firmware
40 tristate "BIOS Enhanced Disk Drive calls determine boot disk"
43 Say Y or M here if you want to enable BIOS Enhanced Disk Drive
44 Services real mode BIOS calls to determine which disk
45 BIOS tries boot from. This information is then exported via sysfs.
47 This option is experimental and is known to fail to boot on some
48 obscure configurations. Most disk controller BIOS vendors do
49 not yet implement this feature.
52 bool "Sets default behavior for EDD detection to off"
56 Say Y if you want EDD disabled by default, even though it is compiled into the
57 kernel. Say N if you want EDD enabled by default. EDD can be dynamically set
58 using the kernel parameter 'edd={on|skipmbr|off}'.
60 config FIRMWARE_MEMMAP
61 bool "Add firmware-provided memory map to sysfs" if EXPERT
64 Add the firmware-provided (unmodified) memory map to /sys/firmware/memmap.
65 That memory map is used for example by kexec to set up parameter area
66 for the next kernel, but can also be used for debugging purposes.
68 See also Documentation/ABI/testing/sysfs-firmware-memmap.
71 bool "Console device selection via EFI PCDP or HCDP table"
72 depends on ACPI && EFI && IA64
75 If your firmware supplies the PCDP table, and you want to
76 automatically use the primary console device it describes
77 as the Linux console, say Y here.
79 If your firmware supplies the HCDP table, and you want to
80 use the first serial port it describes as the Linux console,
81 say Y here. If your EFI ConOut path contains only a UART
82 device, it will become the console automatically. Otherwise,
83 you must specify the "console=hcdp" kernel boot argument.
85 Neither the PCDP nor the HCDP affects naming of serial devices,
86 so a serial console may be /dev/ttyS0, /dev/ttyS1, etc, depending
87 on how the driver discovers devices.
89 You must also enable the appropriate drivers (serial, VGA, etc.)
91 See DIG64_HCDPv20_042804.pdf available from
92 <http://www.dig64.org/specifications/>
95 tristate "BIOS update support for DELL systems via sysfs"
98 select FW_LOADER_USER_HELPER
100 Say m if you want to have the option of updating the BIOS for your
101 DELL system. Note you need a Dell OpenManage or Dell Update package (DUP)
102 supporting application to communicate with the BIOS regarding the new
103 image for the image update to take effect.
104 See <file:Documentation/dell_rbu.txt> for more details on the driver.
107 tristate "Dell Systems Management Base Driver"
110 The Dell Systems Management Base Driver provides a sysfs interface
111 for systems management software to perform System Management
112 Interrupts (SMIs) and Host Control Actions (system power cycle or
113 power off after OS shutdown) on certain Dell systems.
115 See <file:Documentation/dcdbas.txt> for more details on the driver
116 and the Dell systems on which Dell systems management software makes
119 Say Y or M here to enable the driver for use by Dell systems
120 management software such as Dell OpenManage.
123 bool "Export DMI identification via sysfs to userspace"
127 Say Y here if you want to query SMBIOS/DMI system identification
128 information from userspace through /sys/class/dmi/id/ or if you want
129 DMI-based module auto-loading.
132 tristate "DMI table support in sysfs"
133 depends on SYSFS && DMI
136 Say Y or M here to enable the exporting of the raw DMI table
137 data via sysfs. This is useful for consuming the data without
138 requiring any access to /dev/mem at all. Tables are found
139 under /sys/firmware/dmi when this option is enabled and
142 config DMI_SCAN_MACHINE_NON_EFI_FALLBACK
145 config ISCSI_IBFT_FIND
146 bool "iSCSI Boot Firmware Table Attributes"
147 depends on X86 && ACPI
150 This option enables the kernel to find the region of memory
151 in which the ISCSI Boot Firmware Table (iBFT) resides. This
152 is necessary for iSCSI Boot Firmware Table Attributes module to work
156 tristate "iSCSI Boot Firmware Table Attributes module"
157 select ISCSI_BOOT_SYSFS
158 depends on ISCSI_IBFT_FIND && SCSI && SCSI_LOWLEVEL
161 This option enables support for detection and exposing of iSCSI
162 Boot Firmware Table (iBFT) via sysfs to userspace. If you wish to
163 detect iSCSI boot parameters dynamically during system boot, say Y.
166 config RASPBERRYPI_FIRMWARE
167 tristate "Raspberry Pi Firmware Driver"
168 depends on BCM2835_MBOX
170 This option enables support for communicating with the firmware on the
174 tristate "QEMU fw_cfg device support in sysfs"
175 depends on SYSFS && (ARM || ARM64 || PPC_PMAC || SPARC || X86)
176 depends on HAS_IOPORT_MAP
179 Say Y or M here to enable the exporting of the QEMU firmware
180 configuration (fw_cfg) file entries via sysfs. Entries are
181 found under /sys/firmware/fw_cfg when this option is enabled
184 config FW_CFG_SYSFS_CMDLINE
185 bool "QEMU fw_cfg device parameter parsing"
186 depends on FW_CFG_SYSFS
188 Allow the qemu_fw_cfg device to be initialized via the kernel
189 command line or using a module parameter.
190 WARNING: Using incorrect parameters (base address in particular)
191 may crash your system.
195 depends on ARM || ARM64
196 select RESET_CONTROLLER
200 depends on QCOM_SCM && ARM
204 depends on QCOM_SCM && ARM64
206 config HAVE_ARM_SMCCC
209 source "drivers/firmware/broadcom/Kconfig"
210 source "drivers/firmware/google/Kconfig"
211 source "drivers/firmware/efi/Kconfig"
212 source "drivers/firmware/meson/Kconfig"