1
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 FORCE_SMP
25 select SWIOTLB
26 default y
27
28config PARAVIRT_SPINLOCKS
29 bool
30
31config PPC_SPLPAR
32 bool "Support for shared-processor logical partitions"
33 depends on PPC_PSERIES
34 select PARAVIRT_SPINLOCKS if PPC_QUEUED_SPINLOCKS
35 default y
36 help
37 Enabling this option will make the kernel run more efficiently
38 on logically-partitioned pSeries systems which use shared
39 processors, that is, which share physical processors between
40 two or more partitions.
41
42 Say Y if you are unsure.
43
44config DTL
45 bool "Dispatch Trace Log"
46 depends on PPC_SPLPAR && DEBUG_FS
47 help
48 SPLPAR machines can log hypervisor preempt & dispatch events to a
49 kernel buffer. Saying Y here will enable logging these events,
50 which are accessible through a debugfs file.
51
52 Say N if you are unsure.
53
54config PSERIES_ENERGY
55 tristate "pSeries energy management capabilities driver"
56 depends on PPC_PSERIES
57 default y
58 help
59 Provides interface to platform energy management capabilities
60 on supported PSERIES platforms.
61 Provides: /sys/devices/system/cpu/pseries_(de)activation_hint_list
62 and /sys/devices/system/cpu/cpuN/pseries_(de)activation_hint
63
64config SCANLOG
65 tristate "Scanlog dump interface"
66 depends on RTAS_PROC && PPC_PSERIES
67
68config IO_EVENT_IRQ
69 bool "IO Event Interrupt support"
70 depends on PPC_PSERIES
71 default y
72 help
73 Select this option, if you want to enable support for IO Event
74 interrupts. IO event interrupt is a mechanism provided by RTAS
75 to return information about hardware error and non-error events
76 which may need OS attention. RTAS returns events for multiple
77 event types and scopes. Device drivers can register their handlers
78 to receive events.
79
80 This option will only enable the IO event platform code. You
81 will still need to enable or compile the actual drivers
82 that use this infrastructure to handle IO event interrupts.
83
84 Say Y if you are unsure.
85
86config LPARCFG
87 bool "LPAR Configuration Data"
88 depends on PPC_PSERIES
89 help
90 Provide system capacity information via human readable
91 <key word>=<value> pairs through a /proc/ppc64/lparcfg interface.
92
93config PPC_PSERIES_DEBUG
94 depends on PPC_PSERIES && PPC_EARLY_DEBUG
95 bool "Enable extra debug logging in platforms/pseries"
96 default y
97 help
98 Say Y here if you want the pseries core to produce a bunch of
99 debug messages to the system log. Select this if you are having a
100 problem with the pseries core and want to see more of what is
101 going on. This does not enable debugging in lpar.c, which must
102 be manually done due to its verbosity.
103
104config PPC_SMLPAR
105 bool "Support for shared-memory logical partitions"
106 depends on PPC_PSERIES
107 select LPARCFG
108 help
109 Select this option to enable shared memory partition support.
110 With this option a system running in an LPAR can be given more
111 memory than physically available and will allow firmware to
112 balance memory across many LPARs.
113
114config CMM
115 tristate "Collaborative memory management"
116 depends on PPC_SMLPAR
117 select MEMORY_BALLOON
118 default y
119 help
120 Select this option, if you want to enable the kernel interface
121 to reduce the memory size of the system. This is accomplished
122 by allocating pages of memory and put them "on hold". This only
123 makes sense for a system running in an LPAR where the unused pages
124 will be reused for other LPARs. The interface allows firmware to
125 balance memory across many LPARs.
126
127config HV_PERF_CTRS
128 bool "Hypervisor supplied PMU events (24x7 & GPCI)"
129 default y
130 depends on PERF_EVENTS && PPC_PSERIES
131 help
132 Enable access to hypervisor supplied counters in perf. Currently,
133 this enables code that uses the hcall GetPerfCounterInfo and 24x7
134 interfaces to retrieve counters. GPCI exists on Power 6 and later
135 systems. 24x7 is available on Power 8 and later systems.
136
137 If unsure, select Y.
138
139config IBMVIO
140 depends on PPC_PSERIES
141 bool
142 default y
143
144config IBMEBUS
145 depends on PPC_PSERIES && !CPU_LITTLE_ENDIAN
146 bool "Support for GX bus based adapters"
147 help
148 Bus device driver for GX bus based adapters.
149
150config PAPR_SCM
151 depends on PPC_PSERIES && MEMORY_HOTPLUG && LIBNVDIMM
152 tristate "Support for the PAPR Storage Class Memory interface"
153 help
154 Enable access to hypervisor provided storage class memory.
155
156config PPC_SVM
157 bool "Secure virtual machine (SVM) support for POWER"
158 depends on PPC_PSERIES
159 select SWIOTLB
160 select ARCH_HAS_MEM_ENCRYPT
161 select ARCH_HAS_FORCE_DMA_UNENCRYPTED
162 help
163 There are certain POWER platforms which support secure guests using
164 the Protected Execution Facility, with the help of an Ultravisor
165 executing below the hypervisor layer. This enables support for
166 those guests.
167
168 If unsure, say "N".
169
