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The Itanium architecture is obsolete, and an informal survey [0] reveals that any residual use of Itanium hardware in production is mostly HP-UX or OpenVMS based. The use of Linux on Itanium appears to be limited to enthusiasts that occasionally boot a fresh Linux kernel to see whether things are still working as intended, and perhaps to churn out some distro packages that are rarely used in practice. None of the original companies behind Itanium still produce or support any hardware or software for the architecture, and it is listed as 'Orphaned' in the MAINTAINERS file, as apparently, none of the engineers that contributed on behalf of those companies (nor anyone else, for that matter) have been willing to support or maintain the architecture upstream or even be responsible for applying the odd fix. The Intel firmware team removed all IA-64 support from the Tianocore/EDK2 reference implementation of EFI in 2018. (Itanium is the original architecture for which EFI was developed, and the way Linux supports it deviates significantly from other architectures.) Some distros, such as Debian and Gentoo, still maintain [unofficial] ia64 ports, but many have dropped support years ago. While the argument is being made [1] that there is a 'for the common good' angle to being able to build and run existing projects such as the Grid Community Toolkit [2] on Itanium for interoperability testing, the fact remains that none of those projects are known to be deployed on Linux/ia64, and very few people actually have access to such a system in the first place. Even if there were ways imaginable in which Linux/ia64 could be put to good use today, what matters is whether anyone is actually doing that, and this does not appear to be the case. There are no emulators widely available, and so boot testing Itanium is generally infeasible for ordinary contributors. GCC still supports IA-64 but its compile farm [3] no longer has any IA-64 machines. GLIBC would like to get rid of IA-64 [4] too because it would permit some overdue code cleanups. In summary, the benefits to the ecosystem of having IA-64 be part of it are mostly theoretical, whereas the maintenance overhead of keeping it supported is real. So let's rip off the band aid, and remove the IA-64 arch code entirely. This follows the timeline proposed by the Debian/ia64 maintainer [5], which removes support in a controlled manner, leaving IA-64 in a known good state in the most recent LTS release. Other projects will follow once the kernel support is removed. [0] https://lore.kernel.org/all/CAMj1kXFCMh_578jniKpUtx_j8ByHnt=s7S+yQ+vGbKt9ud7+kQ@mail.gmail.com/ [1] https://lore.kernel.org/all/0075883c-7c51-00f5-2c2d-5119c1820410@web.de/ [2] https://gridcf.org/gct-docs/latest/index.html [3] https://cfarm.tetaneutral.net/machines/list/ [4] https://lore.kernel.org/all/87bkiilpc4.fsf@mid.deneb.enyo.de/ [5] https://lore.kernel.org/all/ff58a3e76e5102c94bb5946d99187b358def688a.camel@physik.fu-berlin.de/ Acked-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
295 lines
11 KiB
Plaintext
295 lines
11 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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#
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# For a description of the syntax of this configuration file,
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# see Documentation/kbuild/kconfig-language.rst.
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#
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menu "Firmware Drivers"
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source "drivers/firmware/arm_scmi/Kconfig"
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config ARM_SCPI_PROTOCOL
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tristate "ARM System Control and Power Interface (SCPI) Message Protocol"
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depends on ARM || ARM64 || COMPILE_TEST
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depends on MAILBOX
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help
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System Control and Power Interface (SCPI) Message Protocol is
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defined for the purpose of communication between the Application
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Cores(AP) and the System Control Processor(SCP). The MHU peripheral
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provides a mechanism for inter-processor communication between SCP
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and AP.
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SCP controls most of the power management on the Application
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Processors. It offers control and management of: the core/cluster
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power states, various power domain DVFS including the core/cluster,
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certain system clocks configuration, thermal sensors and many
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others.
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This protocol library provides interface for all the client drivers
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making use of the features offered by the SCP.
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config ARM_SCPI_POWER_DOMAIN
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tristate "SCPI power domain driver"
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depends on ARM_SCPI_PROTOCOL || (COMPILE_TEST && OF)
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default y
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select PM_GENERIC_DOMAINS if PM
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help
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This enables support for the SCPI power domains which can be
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enabled or disabled via the SCP firmware
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config ARM_SDE_INTERFACE
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bool "ARM Software Delegated Exception Interface (SDEI)"
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depends on ARM64
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depends on ACPI_APEI_GHES
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help
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The Software Delegated Exception Interface (SDEI) is an ARM
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standard for registering callbacks from the platform firmware
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into the OS. This is typically used to implement RAS notifications.
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config EDD
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tristate "BIOS Enhanced Disk Drive calls determine boot disk"
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depends on X86
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help
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Say Y or M here if you want to enable BIOS Enhanced Disk Drive
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Services real mode BIOS calls to determine which disk
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BIOS tries boot from. This information is then exported via sysfs.
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This option is experimental and is known to fail to boot on some
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obscure configurations. Most disk controller BIOS vendors do
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not yet implement this feature.
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config EDD_OFF
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bool "Sets default behavior for EDD detection to off"
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depends on EDD
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default n
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help
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Say Y if you want EDD disabled by default, even though it is compiled into the
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kernel. Say N if you want EDD enabled by default. EDD can be dynamically set
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using the kernel parameter 'edd={on|skipmbr|off}'.
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config FIRMWARE_MEMMAP
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bool "Add firmware-provided memory map to sysfs" if EXPERT
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default X86
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help
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Add the firmware-provided (unmodified) memory map to /sys/firmware/memmap.
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That memory map is used for example by kexec to set up parameter area
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for the next kernel, but can also be used for debugging purposes.
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See also Documentation/ABI/testing/sysfs-firmware-memmap.
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config DMIID
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bool "Export DMI identification via sysfs to userspace"
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depends on DMI
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default y
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help
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Say Y here if you want to query SMBIOS/DMI system identification
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information from userspace through /sys/class/dmi/id/ or if you want
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DMI-based module auto-loading.
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config DMI_SYSFS
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tristate "DMI table support in sysfs"
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depends on SYSFS && DMI
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default n
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help
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Say Y or M here to enable the exporting of the raw DMI table
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data via sysfs. This is useful for consuming the data without
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requiring any access to /dev/mem at all. Tables are found
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under /sys/firmware/dmi when this option is enabled and
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loaded.
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config DMI_SCAN_MACHINE_NON_EFI_FALLBACK
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bool
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config ISCSI_IBFT_FIND
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bool "iSCSI Boot Firmware Table Attributes"
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depends on X86 && ISCSI_IBFT
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default n
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help
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This option enables the kernel to find the region of memory
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in which the ISCSI Boot Firmware Table (iBFT) resides. This
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is necessary for iSCSI Boot Firmware Table Attributes module to work
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properly.
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config ISCSI_IBFT
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tristate "iSCSI Boot Firmware Table Attributes module"
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select ISCSI_BOOT_SYSFS
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select ISCSI_IBFT_FIND if X86
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depends on ACPI && SCSI && SCSI_LOWLEVEL
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default n
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help
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This option enables support for detection and exposing of iSCSI
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Boot Firmware Table (iBFT) via sysfs to userspace. If you wish to
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detect iSCSI boot parameters dynamically during system boot, say Y.
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Otherwise, say N.
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config RASPBERRYPI_FIRMWARE
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tristate "Raspberry Pi Firmware Driver"
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depends on BCM2835_MBOX
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help
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This option enables support for communicating with the firmware on the
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Raspberry Pi.
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config FW_CFG_SYSFS
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tristate "QEMU fw_cfg device support in sysfs"
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depends on SYSFS && (ARM || ARM64 || PARISC || PPC_PMAC || SPARC || X86)
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depends on HAS_IOPORT_MAP
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default n
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help
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Say Y or M here to enable the exporting of the QEMU firmware
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configuration (fw_cfg) file entries via sysfs. Entries are
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found under /sys/firmware/fw_cfg when this option is enabled
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and loaded.
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config FW_CFG_SYSFS_CMDLINE
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bool "QEMU fw_cfg device parameter parsing"
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depends on FW_CFG_SYSFS
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help
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Allow the qemu_fw_cfg device to be initialized via the kernel
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command line or using a module parameter.
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WARNING: Using incorrect parameters (base address in particular)
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may crash your system.
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config INTEL_STRATIX10_SERVICE
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tristate "Intel Stratix10 Service Layer"
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depends on ARCH_INTEL_SOCFPGA && ARM64 && HAVE_ARM_SMCCC
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default n
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help
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Intel Stratix10 service layer runs at privileged exception level,
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interfaces with the service providers (FPGA manager is one of them)
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and manages secure monitor call to communicate with secure monitor
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software at secure monitor exception level.
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Say Y here if you want Stratix10 service layer support.
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config INTEL_STRATIX10_RSU
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tristate "Intel Stratix10 Remote System Update"
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depends on INTEL_STRATIX10_SERVICE
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help
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The Intel Remote System Update (RSU) driver exposes interfaces
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access through the Intel Service Layer to user space via sysfs
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device attribute nodes. The RSU interfaces report/control some of
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the optional RSU features of the Stratix 10 SoC FPGA.
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The RSU provides a way for customers to update the boot
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configuration of a Stratix 10 SoC device with significantly reduced
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risk of corrupting the bitstream storage and bricking the system.
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Enable RSU support if you are using an Intel SoC FPGA with the RSU
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feature enabled and you want Linux user space control.
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Say Y here if you want Intel RSU support.
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config MTK_ADSP_IPC
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tristate "MTK ADSP IPC Protocol driver"
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depends on MTK_ADSP_MBOX
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help
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Say yes here to add support for the MediaTek ADSP IPC
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between host AP (Linux) and the firmware running on ADSP.
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ADSP exists on some mtk processors.
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Client might use shared memory to exchange information with ADSP.
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config QCOM_SCM
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tristate
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config QCOM_SCM_DOWNLOAD_MODE_DEFAULT
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bool "Qualcomm download mode enabled by default"
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depends on QCOM_SCM
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help
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A device with "download mode" enabled will upon an unexpected
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warm-restart enter a special debug mode that allows the user to
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"download" memory content over USB for offline postmortem analysis.
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The feature can be enabled/disabled on the kernel command line.
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Say Y here to enable "download mode" by default.
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config SYSFB
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bool
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select BOOT_VESA_SUPPORT
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config SYSFB_SIMPLEFB
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bool "Mark VGA/VBE/EFI FB as generic system framebuffer"
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depends on X86 || EFI
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select SYSFB
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help
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Firmwares often provide initial graphics framebuffers so the BIOS,
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bootloader or kernel can show basic video-output during boot for
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user-guidance and debugging. Historically, x86 used the VESA BIOS
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Extensions and EFI-framebuffers for this, which are mostly limited
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to x86 BIOS or EFI systems.
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This option, if enabled, marks VGA/VBE/EFI framebuffers as generic
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framebuffers so the new generic system-framebuffer drivers can be
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used instead. If the framebuffer is not compatible with the generic
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modes, it is advertised as fallback platform framebuffer so legacy
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drivers like efifb, vesafb and uvesafb can pick it up.
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If this option is not selected, all system framebuffers are always
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marked as fallback platform framebuffers as usual.
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Note: Legacy fbdev drivers, including vesafb, efifb, uvesafb, will
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not be able to pick up generic system framebuffers if this option
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is selected. You are highly encouraged to enable simplefb as
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replacement if you select this option. simplefb can correctly deal
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with generic system framebuffers. But you should still keep vesafb
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and others enabled as fallback if a system framebuffer is
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incompatible with simplefb.
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If unsure, say Y.
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config TI_SCI_PROTOCOL
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tristate "TI System Control Interface (TISCI) Message Protocol"
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depends on TI_MESSAGE_MANAGER
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help
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TI System Control Interface (TISCI) Message Protocol is used to manage
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compute systems such as ARM, DSP etc with the system controller in
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complex System on Chip(SoC) such as those found on certain keystone
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generation SoC from TI.
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System controller provides various facilities including power
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management function support.
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This protocol library is used by client drivers to use the features
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provided by the system controller.
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config TRUSTED_FOUNDATIONS
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bool "Trusted Foundations secure monitor support"
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depends on ARM && CPU_V7
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help
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Some devices (including most early Tegra-based consumer devices on
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the market) are booted with the Trusted Foundations secure monitor
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active, requiring some core operations to be performed by the secure
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monitor instead of the kernel.
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This option allows the kernel to invoke the secure monitor whenever
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required on devices using Trusted Foundations. See the functions and
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comments in linux/firmware/trusted_foundations.h or the device tree
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bindings for "tlm,trusted-foundations" for details on how to use it.
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Choose N if you don't know what this is about.
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config TURRIS_MOX_RWTM
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tristate "Turris Mox rWTM secure firmware driver"
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depends on ARCH_MVEBU || COMPILE_TEST
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depends on HAS_DMA && OF
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depends on MAILBOX
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select HW_RANDOM
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select ARMADA_37XX_RWTM_MBOX
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help
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This driver communicates with the firmware on the Cortex-M3 secure
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processor of the Turris Mox router. Enable if you are building for
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Turris Mox, and you will be able to read the device serial number and
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other manufacturing data and also utilize the Entropy Bit Generator
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for hardware random number generation.
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source "drivers/firmware/arm_ffa/Kconfig"
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source "drivers/firmware/broadcom/Kconfig"
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source "drivers/firmware/cirrus/Kconfig"
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source "drivers/firmware/google/Kconfig"
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source "drivers/firmware/efi/Kconfig"
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source "drivers/firmware/imx/Kconfig"
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source "drivers/firmware/meson/Kconfig"
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source "drivers/firmware/psci/Kconfig"
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source "drivers/firmware/smccc/Kconfig"
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source "drivers/firmware/tegra/Kconfig"
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source "drivers/firmware/xilinx/Kconfig"
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endmenu
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