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