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 select SWIOTLB 27 default y 28 29config PPC_SPLPAR 30 depends on PPC_PSERIES 31 bool "Support for shared-processor logical partitions" 32 help 33 Enabling this option will make the kernel run more efficiently 34 on logically-partitioned pSeries systems which use shared 35 processors, that is, which share physical processors between 36 two or more partitions. 37 38config DTL 39 bool "Dispatch Trace Log" 40 depends on PPC_SPLPAR && DEBUG_FS 41 help 42 SPLPAR machines can log hypervisor preempt & dispatch events to a 43 kernel buffer. Saying Y here will enable logging these events, 44 which are accessible through a debugfs file. 45 46 Say N if you are unsure. 47 48config PSERIES_ENERGY 49 tristate "pSeries energy management capabilities driver" 50 depends on PPC_PSERIES 51 default y 52 help 53 Provides interface to platform energy management capabilities 54 on supported PSERIES platforms. 55 Provides: /sys/devices/system/cpu/pseries_(de)activation_hint_list 56 and /sys/devices/system/cpu/cpuN/pseries_(de)activation_hint 57 58config SCANLOG 59 tristate "Scanlog dump interface" 60 depends on RTAS_PROC && PPC_PSERIES 61 62config IO_EVENT_IRQ 63 bool "IO Event Interrupt support" 64 depends on PPC_PSERIES 65 default y 66 help 67 Select this option, if you want to enable support for IO Event 68 interrupts. IO event interrupt is a mechanism provided by RTAS 69 to return information about hardware error and non-error events 70 which may need OS attention. RTAS returns events for multiple 71 event types and scopes. Device drivers can register their handlers 72 to receive events. 73 74 This option will only enable the IO event platform code. You 75 will still need to enable or compile the actual drivers 76 that use this infrastructure to handle IO event interrupts. 77 78 Say Y if you are unsure. 79 80config LPARCFG 81 bool "LPAR Configuration Data" 82 depends on PPC_PSERIES 83 help 84 Provide system capacity information via human readable 85 <key word>=<value> pairs through a /proc/ppc64/lparcfg interface. 86 87config PPC_PSERIES_DEBUG 88 depends on PPC_PSERIES && PPC_EARLY_DEBUG 89 bool "Enable extra debug logging in platforms/pseries" 90 default y 91 help 92 Say Y here if you want the pseries core to produce a bunch of 93 debug messages to the system log. Select this if you are having a 94 problem with the pseries core and want to see more of what is 95 going on. This does not enable debugging in lpar.c, which must 96 be manually done due to its verbosity. 97 98config PPC_SMLPAR 99 bool "Support for shared-memory logical partitions" 100 depends on PPC_PSERIES 101 select LPARCFG 102 help 103 Select this option to enable shared memory partition support. 104 With this option a system running in an LPAR can be given more 105 memory than physically available and will allow firmware to 106 balance memory across many LPARs. 107 108config CMM 109 tristate "Collaborative memory management" 110 depends on PPC_SMLPAR 111 default y 112 help 113 Select this option, if you want to enable the kernel interface 114 to reduce the memory size of the system. This is accomplished 115 by allocating pages of memory and put them "on hold". This only 116 makes sense for a system running in an LPAR where the unused pages 117 will be reused for other LPARs. The interface allows firmware to 118 balance memory across many LPARs. 119 120config HV_PERF_CTRS 121 bool "Hypervisor supplied PMU events (24x7 & GPCI)" 122 default y 123 depends on PERF_EVENTS && PPC_PSERIES 124 help 125 Enable access to hypervisor supplied counters in perf. Currently, 126 this enables code that uses the hcall GetPerfCounterInfo and 24x7 127 interfaces to retrieve counters. GPCI exists on Power 6 and later 128 systems. 24x7 is available on Power 8 and later systems. 129 130 If unsure, select Y. 131 132config IBMVIO 133 depends on PPC_PSERIES 134 bool 135 default y 136 137config IBMEBUS 138 depends on PPC_PSERIES && !CPU_LITTLE_ENDIAN 139 bool "Support for GX bus based adapters" 140 help 141 Bus device driver for GX bus based adapters. 142 143config PAPR_SCM 144 depends on PPC_PSERIES && MEMORY_HOTPLUG && LIBNVDIMM 145 tristate "Support for the PAPR Storage Class Memory interface" 146 help 147 Enable access to hypervisor provided storage class memory. 148 149config PPC_SVM 150 bool "Secure virtual machine (SVM) support for POWER" 151 depends on PPC_PSERIES 152 select SWIOTLB 153 select ARCH_HAS_MEM_ENCRYPT 154 select ARCH_HAS_FORCE_DMA_UNENCRYPTED 155 help 156 There are certain POWER platforms which support secure guests using 157 the Protected Execution Facility, with the help of an Ultravisor 158 executing below the hypervisor layer. This enables support for 159 those guests. 160 161 If unsure, say "N". 162