arch/powerpc/platforms/pseries/Kconfig

   1 # SPDX-License-Identifier: GPL-2.0
   2 config 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 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
  28 config PPC_SPLPAR
  29         depends on PPC_PSERIES
  30         bool "Support for shared-processor logical partitions"
  31         default n
  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
  38 config 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
  48 config 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
  58 config SCANLOG
  59         tristate "Scanlog dump interface"
  60         depends on RTAS_PROC && PPC_PSERIES
  61
  62 config 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
  80 config 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
  87 config PPC_PSERIES_DEBUG
  88         depends on PPC_PSERIES && PPC_EARLY_DEBUG
  89         bool "Enable extra debug logging in platforms/pseries"
  90         help
  91           Say Y here if you want the pseries core to produce a bunch of
  92           debug messages to the system log. Select this if you are having a
  93           problem with the pseries core and want to see more of what is
  94           going on. This does not enable debugging in lpar.c, which must
  95           be manually done due to its verbosity.
  96         default y
  97
  98 config PPC_SMLPAR
  99         bool "Support for shared-memory logical partitions"
 100         depends on PPC_PSERIES
 101         select LPARCFG
 102         default n
 103         help
 104           Select this option to enable shared memory partition support.
 105           With this option a system running in an LPAR can be given more
 106           memory than physically available and will allow firmware to
 107           balance memory across many LPARs.
 108
 109 config CMM
 110         tristate "Collaborative memory management"
 111         depends on PPC_SMLPAR
 112         default y
 113         help
 114           Select this option, if you want to enable the kernel interface
 115           to reduce the memory size of the system. This is accomplished
 116           by allocating pages of memory and put them "on hold". This only
 117           makes sense for a system running in an LPAR where the unused pages
 118           will be reused for other LPARs. The interface allows firmware to
 119           balance memory across many LPARs.
 120
 121 config HV_PERF_CTRS
 122        bool "Hypervisor supplied PMU events (24x7 & GPCI)"
 123        default y
 124        depends on PERF_EVENTS && PPC_PSERIES
 125        help
 126           Enable access to hypervisor supplied counters in perf. Currently,
 127           this enables code that uses the hcall GetPerfCounterInfo and 24x7
 128           interfaces to retrieve counters. GPCI exists on Power 6 and later
 129           systems. 24x7 is available on Power 8 and later systems.
 130
 131           If unsure, select Y.
 132
 133 config IBMVIO
 134         depends on PPC_PSERIES
 135         bool
 136         default y
 137
 138 config IBMEBUS
 139         depends on PPC_PSERIES && !CPU_LITTLE_ENDIAN
 140         bool "Support for GX bus based adapters"
 141         help
 142           Bus device driver for GX bus based adapters.