# SPDX-License-Identifier: GPL-2.0
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config PPC_PSERIES
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depends on PPC64 && PPC_BOOK3S
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bool "IBM pSeries & new (POWER5-based) iSeries"
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select HAVE_PCSPKR_PLATFORM
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select MPIC
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select OF_DYNAMIC
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select FORCE_PCI
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select PCI_MSI
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select PPC_XICS
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select PPC_XIVE_SPAPR
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select PPC_ICP_NATIVE
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select PPC_ICP_HV
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select PPC_ICS_RTAS
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select PPC_I8259
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select PPC_RTAS
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select PPC_RTAS_DAEMON
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select RTAS_ERROR_LOGGING
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select PPC_UDBG_16550
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select PPC_NATIVE
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select PPC_DOORBELL
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select HOTPLUG_CPU
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select ARCH_RANDOM
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select FORCE_SMP
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select SWIOTLB
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default y
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config PARAVIRT_SPINLOCKS
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bool
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config PPC_SPLPAR
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bool "Support for shared-processor logical partitions"
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depends on PPC_PSERIES
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select PARAVIRT_SPINLOCKS if PPC_QUEUED_SPINLOCKS
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default y
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help
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Enabling this option will make the kernel run more efficiently
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on logically-partitioned pSeries systems which use shared
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processors, that is, which share physical processors between
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two or more partitions.
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Say Y if you are unsure.
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config DTL
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bool "Dispatch Trace Log"
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depends on PPC_SPLPAR && DEBUG_FS
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help
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SPLPAR machines can log hypervisor preempt & dispatch events to a
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kernel buffer. Saying Y here will enable logging these events,
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which are accessible through a debugfs file.
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Say N if you are unsure.
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config PSERIES_ENERGY
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tristate "pSeries energy management capabilities driver"
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depends on PPC_PSERIES
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default y
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help
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Provides interface to platform energy management capabilities
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on supported PSERIES platforms.
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Provides: /sys/devices/system/cpu/pseries_(de)activation_hint_list
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and /sys/devices/system/cpu/cpuN/pseries_(de)activation_hint
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config SCANLOG
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tristate "Scanlog dump interface"
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depends on RTAS_PROC && PPC_PSERIES
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config IO_EVENT_IRQ
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bool "IO Event Interrupt support"
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depends on PPC_PSERIES
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default y
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help
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Select this option, if you want to enable support for IO Event
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interrupts. IO event interrupt is a mechanism provided by RTAS
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to return information about hardware error and non-error events
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which may need OS attention. RTAS returns events for multiple
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event types and scopes. Device drivers can register their handlers
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to receive events.
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This option will only enable the IO event platform code. You
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will still need to enable or compile the actual drivers
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that use this infrastructure to handle IO event interrupts.
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Say Y if you are unsure.
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config LPARCFG
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bool "LPAR Configuration Data"
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depends on PPC_PSERIES
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help
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Provide system capacity information via human readable
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<key word>=<value> pairs through a /proc/ppc64/lparcfg interface.
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config PPC_PSERIES_DEBUG
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depends on PPC_PSERIES && PPC_EARLY_DEBUG
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bool "Enable extra debug logging in platforms/pseries"
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default y
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help
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Say Y here if you want the pseries core to produce a bunch of
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debug messages to the system log. Select this if you are having a
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problem with the pseries core and want to see more of what is
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going on. This does not enable debugging in lpar.c, which must
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be manually done due to its verbosity.
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config PPC_SMLPAR
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bool "Support for shared-memory logical partitions"
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depends on PPC_PSERIES
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select LPARCFG
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help
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Select this option to enable shared memory partition support.
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With this option a system running in an LPAR can be given more
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memory than physically available and will allow firmware to
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balance memory across many LPARs.
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config CMM
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tristate "Collaborative memory management"
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depends on PPC_SMLPAR
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select MEMORY_BALLOON
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default y
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help
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Select this option, if you want to enable the kernel interface
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to reduce the memory size of the system. This is accomplished
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by allocating pages of memory and put them "on hold". This only
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makes sense for a system running in an LPAR where the unused pages
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will be reused for other LPARs. The interface allows firmware to
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balance memory across many LPARs.
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config HV_PERF_CTRS
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bool "Hypervisor supplied PMU events (24x7 & GPCI)"
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default y
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depends on PERF_EVENTS && PPC_PSERIES
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help
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Enable access to hypervisor supplied counters in perf. Currently,
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this enables code that uses the hcall GetPerfCounterInfo and 24x7
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interfaces to retrieve counters. GPCI exists on Power 6 and later
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systems. 24x7 is available on Power 8 and later systems.
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If unsure, select Y.
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config IBMVIO
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depends on PPC_PSERIES
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bool
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default y
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config IBMEBUS
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depends on PPC_PSERIES && !CPU_LITTLE_ENDIAN
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bool "Support for GX bus based adapters"
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help
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Bus device driver for GX bus based adapters.
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config PAPR_SCM
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depends on PPC_PSERIES && MEMORY_HOTPLUG && LIBNVDIMM
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tristate "Support for the PAPR Storage Class Memory interface"
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help
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Enable access to hypervisor provided storage class memory.
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config PPC_SVM
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bool "Secure virtual machine (SVM) support for POWER"
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depends on PPC_PSERIES
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select SWIOTLB
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select ARCH_HAS_MEM_ENCRYPT
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select ARCH_HAS_FORCE_DMA_UNENCRYPTED
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help
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There are certain POWER platforms which support secure guests using
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the Protected Execution Facility, with the help of an Ultravisor
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executing below the hypervisor layer. This enables support for
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those guests.
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If unsure, say "N".
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