1# SPDX-License-Identifier: GPL-2.0 2config PPC_PSERIES 3 depends on PPC64 && PPC_BOOK3S 4 bool "IBM pSeries & new (POWER5-based) iSeries" 5 select HAVE_PCSPKR_PLATFORM 6 select MPIC 7 select OF_DYNAMIC 8 select FORCE_PCI 9 select PCI_MSI 10 select PPC_XICS 11 select PPC_XIVE_SPAPR 12 select PPC_ICP_NATIVE 13 select PPC_ICP_HV 14 select PPC_ICS_RTAS 15 select PPC_I8259 16 select PPC_RTAS 17 select PPC_RTAS_DAEMON 18 select RTAS_ERROR_LOGGING 19 select PPC_UDBG_16550 20 select PPC_NATIVE 21 select PPC_DOORBELL 22 select HOTPLUG_CPU 23 select ARCH_RANDOM 24 select PPC_DOORBELL 25 select FORCE_SMP 26 default y 27 28config PPC_SPLPAR 29 depends on PPC_PSERIES 30 bool "Support for shared-processor logical partitions" 31 help 32 Enabling this option will make the kernel run more efficiently 33 on logically-partitioned pSeries systems which use shared 34 processors, that is, which share physical processors between 35 two or more partitions. 36 37config DTL 38 bool "Dispatch Trace Log" 39 depends on PPC_SPLPAR && DEBUG_FS 40 help 41 SPLPAR machines can log hypervisor preempt & dispatch events to a 42 kernel buffer. Saying Y here will enable logging these events, 43 which are accessible through a debugfs file. 44 45 Say N if you are unsure. 46 47config PSERIES_ENERGY 48 tristate "pSeries energy management capabilities driver" 49 depends on PPC_PSERIES 50 default y 51 help 52 Provides interface to platform energy management capabilities 53 on supported PSERIES platforms. 54 Provides: /sys/devices/system/cpu/pseries_(de)activation_hint_list 55 and /sys/devices/system/cpu/cpuN/pseries_(de)activation_hint 56 57config SCANLOG 58 tristate "Scanlog dump interface" 59 depends on RTAS_PROC && PPC_PSERIES 60 61config IO_EVENT_IRQ 62 bool "IO Event Interrupt support" 63 depends on PPC_PSERIES 64 default y 65 help 66 Select this option, if you want to enable support for IO Event 67 interrupts. IO event interrupt is a mechanism provided by RTAS 68 to return information about hardware error and non-error events 69 which may need OS attention. RTAS returns events for multiple 70 event types and scopes. Device drivers can register their handlers 71 to receive events. 72 73 This option will only enable the IO event platform code. You 74 will still need to enable or compile the actual drivers 75 that use this infrastructure to handle IO event interrupts. 76 77 Say Y if you are unsure. 78 79config LPARCFG 80 bool "LPAR Configuration Data" 81 depends on PPC_PSERIES 82 help 83 Provide system capacity information via human readable 84 <key word>=<value> pairs through a /proc/ppc64/lparcfg interface. 85 86config PPC_PSERIES_DEBUG 87 depends on PPC_PSERIES && PPC_EARLY_DEBUG 88 bool "Enable extra debug logging in platforms/pseries" 89 help 90 Say Y here if you want the pseries core to produce a bunch of 91 debug messages to the system log. Select this if you are having a 92 problem with the pseries core and want to see more of what is 93 going on. This does not enable debugging in lpar.c, which must 94 be manually done due to its verbosity. 95 default y 96 97config PPC_SMLPAR 98 bool "Support for shared-memory logical partitions" 99 depends on PPC_PSERIES 100 select LPARCFG 101 help 102 Select this option to enable shared memory partition support. 103 With this option a system running in an LPAR can be given more 104 memory than physically available and will allow firmware to 105 balance memory across many LPARs. 106 107config CMM 108 tristate "Collaborative memory management" 109 depends on PPC_SMLPAR 110 default y 111 help 112 Select this option, if you want to enable the kernel interface 113 to reduce the memory size of the system. This is accomplished 114 by allocating pages of memory and put them "on hold". This only 115 makes sense for a system running in an LPAR where the unused pages 116 will be reused for other LPARs. The interface allows firmware to 117 balance memory across many LPARs. 118 119config HV_PERF_CTRS 120 bool "Hypervisor supplied PMU events (24x7 & GPCI)" 121 default y 122 depends on PERF_EVENTS && PPC_PSERIES 123 help 124 Enable access to hypervisor supplied counters in perf. Currently, 125 this enables code that uses the hcall GetPerfCounterInfo and 24x7 126 interfaces to retrieve counters. GPCI exists on Power 6 and later 127 systems. 24x7 is available on Power 8 and later systems. 128 129 If unsure, select Y. 130 131config IBMVIO 132 depends on PPC_PSERIES 133 bool 134 default y 135 136config IBMEBUS 137 depends on PPC_PSERIES && !CPU_LITTLE_ENDIAN 138 bool "Support for GX bus based adapters" 139 help 140 Bus device driver for GX bus based adapters. 141 142config PAPR_SCM 143 depends on PPC_PSERIES && MEMORY_HOTPLUG && LIBNVDIMM 144 tristate "Support for the PAPR Storage Class Memory interface" 145 help 146 Enable access to hypervisor provided storage class memory. 147