| # 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_NATIVE | |
| select PPC_DOORBELL | |
| select HOTPLUG_CPU | |
| select ARCH_RANDOM | |
| select FORCE_SMP | |
| select SWIOTLB | |
| default y | |
| config PPC_SPLPAR | |
| depends on PPC_PSERIES | |
| bool "Support for shared-processor logical partitions" | |
| 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. | |
| 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 SCANLOG | |
| tristate "Scanlog dump interface" | |
| depends on RTAS_PROC && PPC_PSERIES | |
| 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 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 | |
| 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". |