arch/powerpc/platforms/Kconfig.cputype

   1 config PPC64
   2         bool "64-bit kernel"
   3         default n
   4         help
   5           This option selects whether a 32-bit or a 64-bit kernel
   6           will be built.
   7
   8 menu "Processor support"
   9 choice
  10         prompt "Processor Type"
  11         depends on PPC32
  12         help
  13           There are five families of 32 bit PowerPC chips supported.
  14           The most common ones are the desktop and server CPUs (601, 603,
  15           604, 740, 750, 74xx) CPUs from Freescale and IBM, with their
  16           embedded 512x/52xx/82xx/83xx/86xx counterparts.
  17           The other embeeded parts, namely 4xx, 8xx, e200 (55xx) and e500
  18           (85xx) each form a family of their own that is not compatible
  19           with the others.
  20
  21           If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx.
  22
  23 config PPC_BOOK3S_32
  24         bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx"
  25         select PPC_FPU
  26
  27 config PPC_85xx
  28         bool "Freescale 85xx"
  29         select E500
  30
  31 config PPC_8xx
  32         bool "Freescale 8xx"
  33         select FSL_SOC
  34         select 8xx
  35         select PPC_LIB_RHEAP
  36
  37 config 40x
  38         bool "AMCC 40x"
  39         select PPC_DCR_NATIVE
  40         select PPC_UDBG_16550
  41         select 4xx_SOC
  42         select PPC_PCI_CHOICE
  43
  44 config 44x
  45         bool "AMCC 44x, 46x or 47x"
  46         select PPC_DCR_NATIVE
  47         select PPC_UDBG_16550
  48         select 4xx_SOC
  49         select PPC_PCI_CHOICE
  50         select PHYS_64BIT
  51
  52 config E200
  53         bool "Freescale e200"
  54
  55 endchoice
  56
  57 choice
  58         prompt "Processor Type"
  59         depends on PPC64
  60         help
  61           There are two families of 64 bit PowerPC chips supported.
  62           The most common ones are the desktop and server CPUs
  63           (POWER3, RS64, POWER4, POWER5, POWER5+, POWER6, ...)
  64
  65           The other are the "embedded" processors compliant with the
  66           "Book 3E" variant of the architecture
  67
  68 config PPC_BOOK3S_64
  69         bool "Server processors"
  70         select PPC_FPU
  71         select PPC_HAVE_PMU_SUPPORT
  72         select SYS_SUPPORTS_HUGETLBFS
  73
  74 config PPC_BOOK3E_64
  75         bool "Embedded processors"
  76         select PPC_FPU # Make it a choice ?
  77         select PPC_SMP_MUXED_IPI
  78
  79 endchoice
  80
  81 config PPC_BOOK3S
  82         def_bool y
  83         depends on PPC_BOOK3S_32 || PPC_BOOK3S_64
  84
  85 config PPC_BOOK3E
  86         def_bool y
  87         depends on PPC_BOOK3E_64
  88
  89 config POWER4_ONLY
  90         bool "Optimize for POWER4"
  91         depends on PPC64 && PPC_BOOK3S
  92         default n
  93         ---help---
  94           Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
  95           The resulting binary will not work on POWER3 or RS64 processors
  96           when compiled with binutils 2.15 or later.
  97
  98 config 6xx
  99         def_bool y
 100         depends on PPC32 && PPC_BOOK3S
 101         select PPC_HAVE_PMU_SUPPORT
 102
 103 config POWER3
 104         bool
 105         depends on PPC64 && PPC_BOOK3S
 106         default y if !POWER4_ONLY
 107
 108 config POWER4
 109         depends on PPC64 && PPC_BOOK3S
 110         def_bool y
 111
 112 config PPC_A2
 113         bool
 114         depends on PPC_BOOK3E_64
 115
 116 config TUNE_CELL
 117         bool "Optimize for Cell Broadband Engine"
 118         depends on PPC64 && PPC_BOOK3S
 119         help
 120           Cause the compiler to optimize for the PPE of the Cell Broadband
 121           Engine. This will make the code run considerably faster on Cell
 122           but somewhat slower on other machines. This option only changes
 123           the scheduling of instructions, not the selection of instructions
 124           itself, so the resulting kernel will keep running on all other
 125           machines. When building a kernel that is supposed to run only
 126           on Cell, you should also select the POWER4_ONLY option.
 127
 128 # this is temp to handle compat with arch=ppc
 129 config 8xx
 130         bool
 131
 132 config E500
 133         select FSL_EMB_PERFMON
 134         select PPC_FSL_BOOK3E
 135         bool
 136
 137 config PPC_E500MC
 138         bool "e500mc Support"
 139         select PPC_FPU
 140         depends on E500
 141
 142 config PPC_FPU
 143         bool
 144         default y if PPC64
 145
 146 config FSL_EMB_PERFMON
 147         bool "Freescale Embedded Perfmon"
 148         depends on E500 || PPC_83xx
 149         help
 150           This is the Performance Monitor support found on the e500 core
 151           and some e300 cores (c3 and c4).  Select this only if your
 152           core supports the Embedded Performance Monitor APU
 153
 154 config FSL_EMB_PERF_EVENT
 155         bool
 156         depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS
 157         default y
 158
 159 config FSL_EMB_PERF_EVENT_E500
 160         bool
 161         depends on FSL_EMB_PERF_EVENT && E500
 162         default y
 163
 164 config 4xx
 165         bool
 166         depends on 40x || 44x
 167         default y
 168
 169 config BOOKE
 170         bool
 171         depends on E200 || E500 || 44x || PPC_BOOK3E
 172         default y
 173
 174 config FSL_BOOKE
 175         bool
 176         depends on (E200 || E500) && PPC32
 177         select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT
 178         default y
 179
 180 # this is for common code between PPC32 & PPC64 FSL BOOKE
 181 config PPC_FSL_BOOK3E
 182         bool
 183         select FSL_EMB_PERFMON
 184         select PPC_SMP_MUXED_IPI
 185         default y if FSL_BOOKE
 186
 187 config PTE_64BIT
 188         bool
 189         depends on 44x || E500 || PPC_86xx
 190         default y if PHYS_64BIT
 191
 192 config PHYS_64BIT
 193         bool 'Large physical address support' if E500 || PPC_86xx
 194         depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
 195         ---help---
 196           This option enables kernel support for larger than 32-bit physical
 197           addresses.  This feature may not be available on all cores.
 198
 199           If you have more than 3.5GB of RAM or so, you also need to enable
 200           SWIOTLB under Kernel Options for this to work.  The actual number
 201           is platform-dependent.
 202
 203           If in doubt, say N here.
 204
 205 config ALTIVEC
 206         bool "AltiVec Support"
 207         depends on 6xx || POWER4
 208         ---help---
 209           This option enables kernel support for the Altivec extensions to the
 210           PowerPC processor. The kernel currently supports saving and restoring
 211           altivec registers, and turning on the 'altivec enable' bit so user
 212           processes can execute altivec instructions.
 213
 214           This option is only usefully if you have a processor that supports
 215           altivec (G4, otherwise known as 74xx series), but does not have
 216           any affect on a non-altivec cpu (it does, however add code to the
 217           kernel).
 218
 219           If in doubt, say Y here.
 220
 221 config VSX
 222         bool "VSX Support"
 223         depends on POWER4 && ALTIVEC && PPC_FPU
 224         ---help---
 225
 226           This option enables kernel support for the Vector Scaler extensions
 227           to the PowerPC processor. The kernel currently supports saving and
 228           restoring VSX registers, and turning on the 'VSX enable' bit so user
 229           processes can execute VSX instructions.
 230
 231           This option is only useful if you have a processor that supports
 232           VSX (P7 and above), but does not have any affect on a non-VSX
 233           CPUs (it does, however add code to the kernel).
 234
 235           If in doubt, say Y here.
 236
 237 config PPC_ICSWX
 238         bool "Support for PowerPC icswx coprocessor instruction"
 239         depends on POWER4
 240         default n
 241         ---help---
 242
 243           This option enables kernel support for the PowerPC Initiate
 244           Coprocessor Store Word (icswx) coprocessor instruction on POWER7
 245           or newer processors.
 246
 247           This option is only useful if you have a processor that supports
 248           the icswx coprocessor instruction. It does not have any effect
 249           on processors without the icswx coprocessor instruction.
 250
 251           This option slightly increases kernel memory usage.
 252
 253           If in doubt, say N here.
 254
 255 config SPE
 256         bool "SPE Support"
 257         depends on E200 || (E500 && !PPC_E500MC)
 258         default y
 259         ---help---
 260           This option enables kernel support for the Signal Processing
 261           Extensions (SPE) to the PowerPC processor. The kernel currently
 262           supports saving and restoring SPE registers, and turning on the
 263           'spe enable' bit so user processes can execute SPE instructions.
 264
 265           This option is only useful if you have a processor that supports
 266           SPE (e500, otherwise known as 85xx series), but does not have any
 267           effect on a non-spe cpu (it does, however add code to the kernel).
 268
 269           If in doubt, say Y here.
 270
 271 config PPC_STD_MMU
 272         def_bool y
 273         depends on PPC_BOOK3S
 274
 275 config PPC_STD_MMU_32
 276         def_bool y
 277         depends on PPC_STD_MMU && PPC32
 278
 279 config PPC_STD_MMU_64
 280         def_bool y
 281         depends on PPC_STD_MMU && PPC64
 282
 283 config PPC_MMU_NOHASH
 284         def_bool y
 285         depends on !PPC_STD_MMU
 286
 287 config PPC_MMU_NOHASH_32
 288         def_bool y
 289         depends on PPC_MMU_NOHASH && PPC32
 290
 291 config PPC_MMU_NOHASH_64
 292         def_bool y
 293         depends on PPC_MMU_NOHASH && PPC64
 294
 295 config PPC_BOOK3E_MMU
 296         def_bool y
 297         depends on FSL_BOOKE || PPC_BOOK3E
 298
 299 config PPC_MM_SLICES
 300         bool
 301         default y if (PPC64 && HUGETLB_PAGE) || (PPC_STD_MMU_64 && PPC_64K_PAGES)
 302         default n
 303
 304 config VIRT_CPU_ACCOUNTING
 305         bool "Deterministic task and CPU time accounting"
 306         depends on PPC64
 307         default y
 308         help
 309           Select this option to enable more accurate task and CPU time
 310           accounting.  This is done by reading a CPU counter on each
 311           kernel entry and exit and on transitions within the kernel
 312           between system, softirq and hardirq state, so there is a
 313           small performance impact.  This also enables accounting of
 314           stolen time on logically-partitioned systems running on
 315           IBM POWER5-based machines.
 316
 317           If in doubt, say Y here.
 318
 319 config PPC_HAVE_PMU_SUPPORT
 320        bool
 321
 322 config PPC_PERF_CTRS
 323        def_bool y
 324        depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT
 325        help
 326          This enables the powerpc-specific perf_event back-end.
 327
 328 config SMP
 329         depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x
 330         bool "Symmetric multi-processing support"
 331         ---help---
 332           This enables support for systems with more than one CPU. If you have
 333           a system with only one CPU, say N. If you have a system with more
 334           than one CPU, say Y.  Note that the kernel does not currently
 335           support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
 336           since they have inadequate hardware support for multiprocessor
 337           operation.
 338
 339           If you say N here, the kernel will run on single and multiprocessor
 340           machines, but will use only one CPU of a multiprocessor machine. If
 341           you say Y here, the kernel will run on single-processor machines.
 342           On a single-processor machine, the kernel will run faster if you say
 343           N here.
 344
 345           If you don't know what to do here, say N.
 346
 347 config NR_CPUS
 348         int "Maximum number of CPUs (2-8192)"
 349         range 2 8192
 350         depends on SMP
 351         default "32" if PPC64
 352         default "4"
 353
 354 config NOT_COHERENT_CACHE
 355         bool
 356         depends on 4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
 357         default n if PPC_47x
 358         default y
 359
 360 config CHECK_CACHE_COHERENCY
 361         bool
 362
 363 endmenu