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