# SPDX-License-Identifier: GPL-2.0-only
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#
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# FSI subsystem
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#
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menuconfig FSI
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tristate "FSI support"
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depends on OF
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select CRC4
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help
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FSI - the FRU Support Interface - is a simple bus for low-level
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access to POWER-based hardware.
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if FSI
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config FSI_NEW_DEV_NODE
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bool "Create '/dev/fsi' directory for char devices"
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default n
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help
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This option causes char devices created for FSI devices to be
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located under a common /dev/fsi/ directory. Set to N unless your
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userspace has been updated to handle the new location.
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Additionally, it also causes the char device names to be offset
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by one so that chip 0 will have /dev/scom1 and chip1 /dev/scom2
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to match old userspace expectations.
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New userspace will use udev rules to generate predictable access
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symlinks in /dev/fsi/by-path when this option is enabled.
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config FSI_MASTER_GPIO
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tristate "GPIO-based FSI master"
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depends on GPIOLIB
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select CRC4
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help
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This option enables a FSI master driver using GPIO lines.
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config FSI_MASTER_HUB
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tristate "FSI hub master"
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help
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This option enables a FSI hub master driver. Hub is a type of FSI
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master that is connected to the upstream master via a slave. Hubs
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allow chaining of FSI links to an arbitrary depth. This allows for
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a high target device fanout.
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config FSI_MASTER_AST_CF
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tristate "FSI master based on Aspeed ColdFire coprocessor"
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depends on GPIOLIB
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depends on GPIO_ASPEED
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select GENERIC_ALLOCATOR
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help
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This option enables a FSI master using the AST2400 and AST2500 GPIO
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lines driven by the internal ColdFire coprocessor. This requires
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the corresponding machine specific ColdFire firmware to be available.
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config FSI_MASTER_ASPEED
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tristate "FSI ASPEED master"
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depends on HAS_IOMEM
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help
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This option enables a FSI master that is present behind an OPB bridge
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in the AST2600.
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Enable it for your BMC kernel in an OpenPower or IBM Power system.
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config FSI_SCOM
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tristate "SCOM FSI client device driver"
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help
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This option enables an FSI based SCOM device driver.
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config FSI_SBEFIFO
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tristate "SBEFIFO FSI client device driver"
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depends on OF_ADDRESS
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help
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This option enables an FSI based SBEFIFO device driver. The SBEFIFO is
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a pipe-like FSI device for communicating with the self boot engine
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(SBE) on POWER processors.
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config FSI_OCC
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tristate "OCC SBEFIFO client device driver"
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depends on FSI_SBEFIFO
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help
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This option enables an SBEFIFO based On-Chip Controller (OCC) device
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driver. The OCC is a device embedded on a POWER processor that collects
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and aggregates sensor data from the processor and system. The OCC can
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provide the raw sensor data as well as perform thermal and power
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management on the system.
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endif
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