Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 1 | # For a description of the syntax of this configuration file, |
| 2 | # see Documentation/kbuild/kconfig-language.txt. |
| 3 | # |
| 4 | |
| 5 | mainmenu "Linux/PowerPC Kernel Configuration" |
| 6 | |
Arnd Bergmann | a0ae9c7 | 2007-06-13 02:30:17 +1000 | [diff] [blame] | 7 | source "arch/powerpc/platforms/Kconfig.cputype" |
Johannes Berg | 17e638b | 2007-03-19 11:53:53 +0100 | [diff] [blame] | 8 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 9 | config PPC32 |
| 10 | bool |
| 11 | default y if !PPC64 |
| 12 | |
| 13 | config 64BIT |
| 14 | bool |
| 15 | default y if PPC64 |
| 16 | |
Stephen Rothwell | 2578bfa | 2007-09-21 10:16:20 +1000 | [diff] [blame] | 17 | config WORD_SIZE |
| 18 | int |
| 19 | default 64 if PPC64 |
| 20 | default 32 if !PPC64 |
| 21 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 22 | config PPC_MERGE |
| 23 | def_bool y |
| 24 | |
| 25 | config MMU |
| 26 | bool |
| 27 | default y |
| 28 | |
Tony Breeds | aa3be5f | 2007-09-21 13:26:02 +1000 | [diff] [blame] | 29 | config GENERIC_CMOS_UPDATE |
| 30 | def_bool y |
| 31 | |
Tony Breeds | 4a4cfe3 | 2007-09-22 07:35:52 +1000 | [diff] [blame] | 32 | config GENERIC_TIME |
| 33 | def_bool y |
| 34 | |
| 35 | config GENERIC_TIME_VSYSCALL |
| 36 | def_bool y |
| 37 | |
Tony Breeds | d831d0b | 2007-09-21 13:26:03 +1000 | [diff] [blame] | 38 | config GENERIC_CLOCKEVENTS |
| 39 | def_bool y |
| 40 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 41 | config GENERIC_HARDIRQS |
| 42 | bool |
| 43 | default y |
| 44 | |
travis@sgi.com | 988c388 | 2008-01-30 23:27:58 +0100 | [diff] [blame] | 45 | config HAVE_SETUP_PER_CPU_AREA |
travis@sgi.com | b32ef63 | 2008-01-30 13:32:51 +0100 | [diff] [blame] | 46 | def_bool PPC64 |
| 47 | |
Ingo Molnar | 0d7012a | 2006-06-29 02:24:43 -0700 | [diff] [blame] | 48 | config IRQ_PER_CPU |
| 49 | bool |
| 50 | default y |
| 51 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 52 | config RWSEM_GENERIC_SPINLOCK |
| 53 | bool |
| 54 | |
| 55 | config RWSEM_XCHGADD_ALGORITHM |
| 56 | bool |
| 57 | default y |
| 58 | |
Nick Piggin | 95c354f | 2008-01-30 13:31:20 +0100 | [diff] [blame] | 59 | config GENERIC_LOCKBREAK |
| 60 | bool |
| 61 | default y |
| 62 | depends on SMP && PREEMPT |
| 63 | |
David Howells | f0d1b0b | 2006-12-08 02:37:49 -0800 | [diff] [blame] | 64 | config ARCH_HAS_ILOG2_U32 |
| 65 | bool |
David Howells | ef55d53 | 2006-12-08 02:37:53 -0800 | [diff] [blame] | 66 | default y |
David Howells | f0d1b0b | 2006-12-08 02:37:49 -0800 | [diff] [blame] | 67 | |
| 68 | config ARCH_HAS_ILOG2_U64 |
| 69 | bool |
David Howells | ef55d53 | 2006-12-08 02:37:53 -0800 | [diff] [blame] | 70 | default y if 64BIT |
David Howells | f0d1b0b | 2006-12-08 02:37:49 -0800 | [diff] [blame] | 71 | |
Akinobu Mita | e779b2f | 2006-03-26 01:39:33 -0800 | [diff] [blame] | 72 | config GENERIC_HWEIGHT |
| 73 | bool |
| 74 | default y |
| 75 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 76 | config GENERIC_CALIBRATE_DELAY |
| 77 | bool |
| 78 | default y |
| 79 | |
Jon Mason | 0a9cb46 | 2006-05-19 15:35:32 -0500 | [diff] [blame] | 80 | config GENERIC_FIND_NEXT_BIT |
| 81 | bool |
| 82 | default y |
| 83 | |
Stephen Rothwell | f057eac | 2007-07-15 23:40:05 -0700 | [diff] [blame] | 84 | config ARCH_NO_VIRT_TO_BUS |
| 85 | def_bool PPC64 |
| 86 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 87 | config PPC |
| 88 | bool |
| 89 | default y |
Mathieu Desnoyers | 42d4b83 | 2008-02-02 15:10:34 -0500 | [diff] [blame] | 90 | select HAVE_OPROFILE |
Mathieu Desnoyers | 3f55009 | 2008-02-02 15:10:35 -0500 | [diff] [blame] | 91 | select HAVE_KPROBES |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 92 | |
| 93 | config EARLY_PRINTK |
| 94 | bool |
Benjamin Herrenschmidt | 51d3082 | 2005-11-23 17:57:25 +1100 | [diff] [blame] | 95 | default y |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 96 | |
| 97 | config COMPAT |
| 98 | bool |
| 99 | default y if PPC64 |
| 100 | |
| 101 | config SYSVIPC_COMPAT |
| 102 | bool |
| 103 | depends on COMPAT && SYSVIPC |
| 104 | default y |
| 105 | |
| 106 | # All PPC32s use generic nvram driver through ppc_md |
| 107 | config GENERIC_NVRAM |
| 108 | bool |
| 109 | default y if PPC32 |
| 110 | |
| 111 | config SCHED_NO_NO_OMIT_FRAME_POINTER |
| 112 | bool |
| 113 | default y |
| 114 | |
| 115 | config ARCH_MAY_HAVE_PC_FDC |
| 116 | bool |
Stephen Rothwell | bed5927 | 2007-03-04 17:04:44 +1100 | [diff] [blame] | 117 | default !PPC_PSERIES || PCI |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 118 | |
Kumar Gala | 08264cb | 2006-01-10 21:43:56 -0600 | [diff] [blame] | 119 | config PPC_OF |
| 120 | def_bool y |
| 121 | |
Stephen Rothwell | 97e873e | 2007-05-01 16:26:07 +1000 | [diff] [blame] | 122 | config OF |
| 123 | def_bool y |
| 124 | |
Kumar Gala | 08264cb | 2006-01-10 21:43:56 -0600 | [diff] [blame] | 125 | config PPC_UDBG_16550 |
| 126 | bool |
| 127 | default n |
| 128 | |
Kumar Gala | 08264cb | 2006-01-10 21:43:56 -0600 | [diff] [blame] | 129 | config GENERIC_TBSYNC |
| 130 | bool |
| 131 | default y if PPC32 && SMP |
| 132 | default n |
| 133 | |
Al Viro | e65e1fc | 2006-09-12 03:04:40 -0400 | [diff] [blame] | 134 | config AUDIT_ARCH |
| 135 | bool |
| 136 | default y |
| 137 | |
Jeremy Fitzhardinge | 73c9cea | 2006-12-08 03:30:41 -0800 | [diff] [blame] | 138 | config GENERIC_BUG |
| 139 | bool |
| 140 | default y |
| 141 | depends on BUG |
| 142 | |
Johannes Berg | b302887 | 2007-03-20 05:18:02 +1100 | [diff] [blame] | 143 | config SYS_SUPPORTS_APM_EMULATION |
Kumar Gala | 58da10b | 2007-05-23 09:51:46 -0500 | [diff] [blame] | 144 | default y if PMAC_APM_EMU |
Johannes Berg | b302887 | 2007-03-20 05:18:02 +1100 | [diff] [blame] | 145 | bool |
| 146 | |
Kumar Gala | f4fc4a5 | 2006-01-16 10:53:22 -0600 | [diff] [blame] | 147 | config DEFAULT_UIMAGE |
| 148 | bool |
| 149 | help |
| 150 | Used to allow a board to specify it wants a uImage built by default |
| 151 | default n |
| 152 | |
Scott Wood | b09c164 | 2008-01-17 16:31:40 -0600 | [diff] [blame] | 153 | config REDBOOT |
| 154 | bool |
| 155 | |
Johannes Berg | 801e406 | 2007-12-08 02:12:39 +0100 | [diff] [blame] | 156 | config HIBERNATE_32 |
Johannes Berg | 543b9fd | 2007-05-03 22:31:38 +1000 | [diff] [blame] | 157 | bool |
Johannes Berg | 801e406 | 2007-12-08 02:12:39 +0100 | [diff] [blame] | 158 | depends on (PPC_PMAC && !SMP) || BROKEN |
| 159 | default y |
| 160 | |
| 161 | config HIBERNATE_64 |
| 162 | bool |
| 163 | depends on BROKEN || (PPC_PMAC64 && EXPERIMENTAL) |
| 164 | default y |
| 165 | |
| 166 | config ARCH_HIBERNATION_POSSIBLE |
| 167 | bool |
| 168 | depends on (PPC64 && HIBERNATE_64) || (PPC32 && HIBERNATE_32) |
Johannes Berg | 543b9fd | 2007-05-03 22:31:38 +1000 | [diff] [blame] | 169 | default y |
| 170 | |
Johannes Berg | f4cb570 | 2007-12-08 02:14:00 +0100 | [diff] [blame] | 171 | config ARCH_SUSPEND_POSSIBLE |
| 172 | def_bool y |
| 173 | depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 |
| 174 | |
Benjamin Herrenschmidt | 4c75a6f | 2006-11-11 17:24:53 +1100 | [diff] [blame] | 175 | config PPC_DCR_NATIVE |
| 176 | bool |
| 177 | default n |
| 178 | |
| 179 | config PPC_DCR_MMIO |
| 180 | bool |
| 181 | default n |
| 182 | |
| 183 | config PPC_DCR |
| 184 | bool |
| 185 | depends on PPC_DCR_NATIVE || PPC_DCR_MMIO |
| 186 | default y |
| 187 | |
Benjamin Herrenschmidt | 4c9d280 | 2006-11-11 17:25:08 +1100 | [diff] [blame] | 188 | config PPC_OF_PLATFORM_PCI |
| 189 | bool |
Stephen Rothwell | 373a6da | 2007-12-21 15:37:07 +1100 | [diff] [blame] | 190 | depends on PCI |
Benjamin Herrenschmidt | 4c9d280 | 2006-11-11 17:25:08 +1100 | [diff] [blame] | 191 | depends on PPC64 # not supported on 32 bits yet |
| 192 | default n |
| 193 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 194 | source "init/Kconfig" |
| 195 | |
Benjamin Herrenschmidt | a2d2e1e | 2007-12-21 15:39:24 +1100 | [diff] [blame] | 196 | source "arch/powerpc/sysdev/Kconfig" |
Kumar Gala | 4330f5d | 2007-03-16 09:32:17 -0500 | [diff] [blame] | 197 | source "arch/powerpc/platforms/Kconfig" |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 198 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 199 | menu "Kernel options" |
| 200 | |
| 201 | config HIGHMEM |
| 202 | bool "High memory support" |
| 203 | depends on PPC32 |
| 204 | |
Tony Breeds | 1ad7499 | 2007-09-21 13:26:03 +1000 | [diff] [blame] | 205 | source kernel/time/Kconfig |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 206 | source kernel/Kconfig.hz |
| 207 | source kernel/Kconfig.preempt |
| 208 | source "fs/Kconfig.binfmt" |
| 209 | |
| 210 | # We optimistically allocate largepages from the VM, so make the limit |
| 211 | # large enough (16MB). This badly named config option is actually |
| 212 | # max order + 1 |
| 213 | config FORCE_MAX_ZONEORDER |
| 214 | int |
| 215 | depends on PPC64 |
Mike Kravetz | 0286486 | 2005-11-07 13:48:59 -0800 | [diff] [blame] | 216 | default "9" if PPC_64K_PAGES |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 217 | default "13" |
| 218 | |
Mel Gorman | ba72cb8 | 2007-11-28 16:21:13 -0800 | [diff] [blame] | 219 | config HUGETLB_PAGE_SIZE_VARIABLE |
| 220 | bool |
| 221 | depends on HUGETLB_PAGE |
| 222 | default y |
| 223 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 224 | config MATH_EMULATION |
| 225 | bool "Math emulation" |
Kumar Gala | 4d52719 | 2007-01-26 00:23:34 -0600 | [diff] [blame] | 226 | depends on 4xx || 8xx || E200 || PPC_MPC832x || E500 |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 227 | ---help--- |
| 228 | Some PowerPC chips designed for embedded applications do not have |
| 229 | a floating-point unit and therefore do not implement the |
| 230 | floating-point instructions in the PowerPC instruction set. If you |
| 231 | say Y here, the kernel will include code to emulate a floating-point |
| 232 | unit, which will allow programs that use floating-point |
| 233 | instructions to run. |
| 234 | |
Scott Wood | 5dd57a1 | 2007-09-18 15:29:35 -0500 | [diff] [blame] | 235 | config 8XX_MINIMAL_FPEMU |
| 236 | bool "Minimal math emulation for 8xx" |
| 237 | depends on 8xx && !MATH_EMULATION |
| 238 | help |
| 239 | Older arch/ppc kernels still emulated a few floating point |
| 240 | instructions such as load and store, even when full math |
| 241 | emulation is disabled. Say "Y" here if you want to preserve |
| 242 | this behavior. |
| 243 | |
| 244 | It is recommended that you build a soft-float userspace instead. |
| 245 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 246 | config IOMMU_VMERGE |
Linas Vepstas | 768cc2d | 2007-07-18 02:09:35 +1000 | [diff] [blame] | 247 | bool "Enable IOMMU virtual merging" |
| 248 | depends on PPC64 |
| 249 | default y |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 250 | help |
| 251 | Cause IO segments sent to a device for DMA to be merged virtually |
| 252 | by the IOMMU when they happen to have been allocated contiguously. |
| 253 | This doesn't add pressure to the IOMMU allocator. However, some |
| 254 | drivers don't support getting large merged segments coming back |
Linas Vepstas | 768cc2d | 2007-07-18 02:09:35 +1000 | [diff] [blame] | 255 | from *_map_sg(). |
| 256 | |
| 257 | Most drivers don't have this problem; it is safe to say Y here. |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 258 | |
| 259 | config HOTPLUG_CPU |
| 260 | bool "Support for enabling/disabling CPUs" |
| 261 | depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC) |
| 262 | ---help--- |
| 263 | Say Y here to be able to disable and re-enable individual |
| 264 | CPUs at runtime on SMP machines. |
| 265 | |
| 266 | Say N if you are unsure. |
| 267 | |
Yasunori Goto | cc57637 | 2006-06-29 02:24:27 -0700 | [diff] [blame] | 268 | config ARCH_ENABLE_MEMORY_HOTPLUG |
| 269 | def_bool y |
| 270 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 271 | config KEXEC |
| 272 | bool "kexec system call (EXPERIMENTAL)" |
Dale Farnsworth | fd4ba7e | 2007-05-12 10:58:43 +1000 | [diff] [blame] | 273 | depends on (PPC_PRPMC2800 || PPC_MULTIPLATFORM) && EXPERIMENTAL |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 274 | help |
| 275 | kexec is a system call that implements the ability to shutdown your |
| 276 | current kernel, and to start another kernel. It is like a reboot |
Matt LaPlante | 1f1332f | 2006-06-29 01:32:47 -0400 | [diff] [blame] | 277 | but it is independent of the system firmware. And like a reboot |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 278 | you can start any kernel with it, not just Linux. |
| 279 | |
Matt LaPlante | 1f1332f | 2006-06-29 01:32:47 -0400 | [diff] [blame] | 280 | The name comes from the similarity to the exec system call. |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 281 | |
| 282 | It is an ongoing process to be certain the hardware in a machine |
| 283 | is properly shutdown, so do not be surprised if this code does not |
| 284 | initially work for you. It may help to enable device hotplugging |
| 285 | support. As of this writing the exact hardware interface is |
| 286 | strongly in flux, so no good recommendation can be made. |
| 287 | |
Haren Myneni | e8625d46 | 2006-01-14 13:48:25 -0800 | [diff] [blame] | 288 | config CRASH_DUMP |
Michael Ellerman | cd9c99d | 2006-03-10 15:01:08 +1100 | [diff] [blame] | 289 | bool "Build a kdump crash kernel (EXPERIMENTAL)" |
Haren Myneni | e8625d46 | 2006-01-14 13:48:25 -0800 | [diff] [blame] | 290 | depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL |
| 291 | help |
| 292 | Build a kernel suitable for use as a kdump capture kernel. |
| 293 | The kernel will be linked at a different address than normal, and |
| 294 | so can only be used for Kdump. |
| 295 | |
| 296 | Don't change this unless you know what you are doing. |
| 297 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 298 | config PPCBUG_NVRAM |
| 299 | bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC |
| 300 | default y if PPC_PREP |
| 301 | |
| 302 | config IRQ_ALL_CPUS |
| 303 | bool "Distribute interrupts on all CPUs by default" |
| 304 | depends on SMP && !MV64360 |
| 305 | help |
| 306 | This option gives the kernel permission to distribute IRQs across |
| 307 | multiple CPUs. Saying N here will route all IRQs to the first |
| 308 | CPU. Generally saying Y is safe, although some problems have been |
| 309 | reported with SMP Power Macintoshes with this option enabled. |
| 310 | |
Andy Whitcroft | ffa27b6 | 2005-10-28 17:46:58 -0700 | [diff] [blame] | 311 | config NUMA |
| 312 | bool "NUMA support" |
| 313 | depends on PPC64 |
| 314 | default y if SMP && PPC_PSERIES |
| 315 | |
Yasunori Goto | c80d79d | 2006-04-10 22:53:53 -0700 | [diff] [blame] | 316 | config NODES_SHIFT |
| 317 | int |
| 318 | default "4" |
| 319 | depends on NEED_MULTIPLE_NODES |
| 320 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 321 | config ARCH_SELECT_MEMORY_MODEL |
| 322 | def_bool y |
| 323 | depends on PPC64 |
| 324 | |
| 325 | config ARCH_FLATMEM_ENABLE |
Andy Whitcroft | 9100b20 | 2005-11-29 19:20:55 +0000 | [diff] [blame] | 326 | def_bool y |
| 327 | depends on (PPC64 && !NUMA) || PPC32 |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 328 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 329 | config ARCH_SPARSEMEM_ENABLE |
| 330 | def_bool y |
Andy Whitcroft | 9100b20 | 2005-11-29 19:20:55 +0000 | [diff] [blame] | 331 | depends on PPC64 |
Andy Whitcroft | d29eff7 | 2007-10-16 01:24:17 -0700 | [diff] [blame] | 332 | select SPARSEMEM_VMEMMAP_ENABLE |
Anton Blanchard | 45fb6ce | 2005-11-11 14:22:35 +1100 | [diff] [blame] | 333 | |
| 334 | config ARCH_SPARSEMEM_DEFAULT |
| 335 | def_bool y |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 336 | depends on (SMP && PPC_PSERIES) || PPC_PS3 |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 337 | |
Mel Gorman | c67c3cb | 2006-09-27 01:49:49 -0700 | [diff] [blame] | 338 | config ARCH_POPULATES_NODE_MAP |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 339 | def_bool y |
Mel Gorman | c67c3cb | 2006-09-27 01:49:49 -0700 | [diff] [blame] | 340 | |
| 341 | source "mm/Kconfig" |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 342 | |
Mike Kravetz | 7e9191d | 2005-11-07 09:39:48 -0800 | [diff] [blame] | 343 | config ARCH_MEMORY_PROBE |
| 344 | def_bool y |
| 345 | depends on MEMORY_HOTPLUG |
| 346 | |
Andy Whitcroft | 7516795 | 2006-10-21 10:24:14 -0700 | [diff] [blame] | 347 | # Some NUMA nodes have memory ranges that span |
| 348 | # other nodes. Even though a pfn is valid and |
| 349 | # between a node's start and end pfns, it may not |
| 350 | # reside on that node. See memmap_init_zone() |
| 351 | # for details. |
| 352 | config NODES_SPAN_OTHER_NODES |
| 353 | def_bool y |
| 354 | depends on NEED_MULTIPLE_NODES |
| 355 | |
Benjamin Herrenschmidt | 16c2d47 | 2007-05-08 16:27:28 +1000 | [diff] [blame] | 356 | config PPC_HAS_HASH_64K |
| 357 | bool |
| 358 | depends on PPC64 |
| 359 | default n |
| 360 | |
Benjamin Herrenschmidt | 3c726f8 | 2005-11-07 11:06:55 +1100 | [diff] [blame] | 361 | config PPC_64K_PAGES |
| 362 | bool "64k page size" |
Benjamin Herrenschmidt | 863c84b | 2005-11-07 00:57:58 -0800 | [diff] [blame] | 363 | depends on PPC64 |
Benjamin Herrenschmidt | 16c2d47 | 2007-05-08 16:27:28 +1000 | [diff] [blame] | 364 | select PPC_HAS_HASH_64K |
Benjamin Herrenschmidt | 3c726f8 | 2005-11-07 11:06:55 +1100 | [diff] [blame] | 365 | help |
| 366 | This option changes the kernel logical page size to 64k. On machines |
Kumar Gala | 9875026 | 2007-04-12 18:01:34 -0500 | [diff] [blame] | 367 | without processor support for 64k pages, the kernel will simulate |
| 368 | them by loading each individual 4k page on demand transparently, |
| 369 | while on hardware with such support, it will be used to map |
| 370 | normal application pages. |
Benjamin Herrenschmidt | 3c726f8 | 2005-11-07 11:06:55 +1100 | [diff] [blame] | 371 | |
Paul Mackerras | fa28237 | 2008-01-24 08:35:13 +1100 | [diff] [blame] | 372 | config PPC_SUBPAGE_PROT |
| 373 | bool "Support setting protections for 4k subpages" |
| 374 | depends on PPC_64K_PAGES |
| 375 | help |
| 376 | This option adds support for a system call to allow user programs |
| 377 | to set access permissions (read/write, readonly, or no access) |
| 378 | on the 4k subpages of each 64k page. |
| 379 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 380 | config SCHED_SMT |
| 381 | bool "SMT (Hyperthreading) scheduler support" |
| 382 | depends on PPC64 && SMP |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 383 | help |
| 384 | SMT scheduler support improves the CPU scheduler's decision making |
| 385 | when dealing with POWER5 cpus at a cost of slightly increased |
| 386 | overhead in some places. If unsure say N here. |
| 387 | |
| 388 | config PROC_DEVICETREE |
Paul Mackerras | 5f29675 | 2005-10-17 20:14:59 +1000 | [diff] [blame] | 389 | bool "Support for device tree in /proc" |
| 390 | depends on PROC_FS |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 391 | help |
| 392 | This option adds a device-tree directory under /proc which contains |
| 393 | an image of the device tree that the kernel copies from Open |
Paul Mackerras | 5f29675 | 2005-10-17 20:14:59 +1000 | [diff] [blame] | 394 | Firmware or other boot firmware. If unsure, say Y here. |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 395 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 396 | config CMDLINE_BOOL |
| 397 | bool "Default bootloader kernel arguments" |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 398 | |
| 399 | config CMDLINE |
| 400 | string "Initial kernel command string" |
| 401 | depends on CMDLINE_BOOL |
| 402 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" |
| 403 | help |
| 404 | On some platforms, there is currently no way for the boot loader to |
| 405 | pass arguments to the kernel. For these platforms, you can supply |
| 406 | some command-line options at build time by entering them here. In |
| 407 | most cases you will need to specify the root device here. |
| 408 | |
| 409 | if !44x || BROKEN |
Johannes Berg | b28f508 | 2008-01-15 23:17:00 -0500 | [diff] [blame] | 410 | config ARCH_WANTS_FREEZER_CONTROL |
| 411 | def_bool y |
| 412 | depends on ADB_PMU |
| 413 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 414 | source kernel/power/Kconfig |
| 415 | endif |
| 416 | |
| 417 | config SECCOMP |
| 418 | bool "Enable seccomp to safely compute untrusted bytecode" |
| 419 | depends on PROC_FS |
| 420 | default y |
| 421 | help |
| 422 | This kernel feature is useful for number crunching applications |
| 423 | that may need to compute untrusted bytecode during their |
| 424 | execution. By using pipes or other transports made available to |
| 425 | the process as file descriptors supporting the read/write |
| 426 | syscalls, it's possible to isolate those applications in |
| 427 | their own address space using seccomp. Once seccomp is |
| 428 | enabled via /proc/<pid>/seccomp, it cannot be disabled |
| 429 | and the task is only allowed to execute a few safe syscalls |
| 430 | defined by each seccomp mode. |
| 431 | |
| 432 | If unsure, say Y. Only embedded should say N here. |
| 433 | |
Scott Wood | 270429b | 2007-04-17 09:24:51 +1000 | [diff] [blame] | 434 | config WANT_DEVICE_TREE |
| 435 | bool |
| 436 | default n |
| 437 | |
| 438 | config DEVICE_TREE |
| 439 | string "Static device tree source file" |
| 440 | depends on WANT_DEVICE_TREE |
| 441 | help |
| 442 | This specifies the device tree source (.dts) file to be |
| 443 | compiled and included when building the bootwrapper. If a |
| 444 | relative filename is given, then it will be relative to |
| 445 | arch/powerpc/boot/dts. If you are not using the bootwrapper, |
| 446 | or do not need to build a dts into the bootwrapper, this |
| 447 | field is ignored. |
| 448 | |
| 449 | For example, this is required when building a cuImage target |
| 450 | for an older U-Boot, which cannot pass a device tree itself. |
| 451 | Such a kernel will not work with a newer U-Boot that tries to |
| 452 | pass a device tree (unless you tell it not to). If your U-Boot |
| 453 | does not mention a device tree in "help bootm", then use the |
| 454 | cuImage target and specify a device tree here. Otherwise, use |
| 455 | the uImage target and leave this field blank. |
| 456 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 457 | endmenu |
| 458 | |
| 459 | config ISA_DMA_API |
| 460 | bool |
Stephen Rothwell | 373a6da | 2007-12-21 15:37:07 +1100 | [diff] [blame] | 461 | default !PPC_ISERIES || PCI |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 462 | |
| 463 | menu "Bus options" |
| 464 | |
| 465 | config ISA |
| 466 | bool "Support for ISA-bus hardware" |
| 467 | depends on PPC_PREP || PPC_CHRP |
Paul Mackerras | f9bd170 | 2005-10-26 16:47:42 +1000 | [diff] [blame] | 468 | select PPC_I8259 |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 469 | help |
| 470 | Find out whether you have ISA slots on your motherboard. ISA is the |
| 471 | name of a bus system, i.e. the way the CPU talks to the other stuff |
| 472 | inside your box. If you have an Apple machine, say N here; if you |
| 473 | have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If |
| 474 | you have an embedded board, consult your board documentation. |
| 475 | |
Christoph Lameter | 5ac6da6 | 2007-02-10 01:43:14 -0800 | [diff] [blame] | 476 | config ZONE_DMA |
| 477 | bool |
| 478 | default y |
| 479 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 480 | config GENERIC_ISA_DMA |
| 481 | bool |
| 482 | depends on PPC64 || POWER4 || 6xx && !CPM2 |
| 483 | default y |
| 484 | |
Paul Mackerras | 25635c7 | 2005-10-26 16:36:55 +1000 | [diff] [blame] | 485 | config PPC_INDIRECT_PCI |
| 486 | bool |
| 487 | depends on PCI |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 488 | default y if 40x || 44x |
Paul Mackerras | 25635c7 | 2005-10-26 16:36:55 +1000 | [diff] [blame] | 489 | default n |
| 490 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 491 | config EISA |
| 492 | bool |
| 493 | |
| 494 | config SBUS |
| 495 | bool |
| 496 | |
Kumar Gala | 08264cb | 2006-01-10 21:43:56 -0600 | [diff] [blame] | 497 | config FSL_SOC |
| 498 | bool |
| 499 | |
Roy Zang | 55c4499 | 2007-07-10 18:44:34 +0800 | [diff] [blame] | 500 | config FSL_PCI |
| 501 | bool |
| 502 | select PPC_INDIRECT_PCI |
| 503 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 504 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
| 505 | config MCA |
| 506 | bool |
| 507 | |
| 508 | config PCI |
Jon Loeliger | 5315862 | 2006-08-09 10:37:28 -0500 | [diff] [blame] | 509 | bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \ |
Stephen Rothwell | bed5927 | 2007-03-04 17:04:44 +1100 | [diff] [blame] | 510 | || PPC_MPC52xx || (EMBEDDED && (PPC_PSERIES || PPC_ISERIES)) \ |
Sean MacLennan | f9bdedb | 2008-01-22 04:55:29 +1100 | [diff] [blame] | 511 | || PPC_PS3 || 44x |
David Gibson | f21f49e | 2007-06-13 14:52:54 +1000 | [diff] [blame] | 512 | default y if !40x && !CPM2 && !8xx && !PPC_83xx \ |
Jon Loeliger | 5315862 | 2006-08-09 10:37:28 -0500 | [diff] [blame] | 513 | && !PPC_85xx && !PPC_86xx |
David Gibson | f21f49e | 2007-06-13 14:52:54 +1000 | [diff] [blame] | 514 | default PCI_PERMEDIA if !4xx && !CPM2 && !8xx |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 515 | default PCI_QSPAN if !4xx && !CPM2 && 8xx |
Michael Ellerman | df87ef5 | 2007-05-08 12:58:34 +1000 | [diff] [blame] | 516 | select ARCH_SUPPORTS_MSI |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 517 | help |
| 518 | Find out whether your system includes a PCI bus. PCI is the name of |
| 519 | a bus system, i.e. the way the CPU talks to the other stuff inside |
| 520 | your box. If you say Y here, the kernel will include drivers and |
| 521 | infrastructure code to support PCI bus devices. |
| 522 | |
| 523 | config PCI_DOMAINS |
Matthew Wilcox | 36e2359 | 2007-07-10 10:54:40 -0600 | [diff] [blame] | 524 | def_bool PCI |
| 525 | |
| 526 | config PCI_SYSCALL |
| 527 | def_bool PCI |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 528 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 529 | config PCI_QSPAN |
| 530 | bool "QSpan PCI" |
| 531 | depends on !4xx && !CPM2 && 8xx |
Paul Mackerras | f9bd170 | 2005-10-26 16:47:42 +1000 | [diff] [blame] | 532 | select PPC_I8259 |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 533 | help |
| 534 | Say Y here if you have a system based on a Motorola 8xx-series |
| 535 | embedded processor with a QSPAN PCI interface, otherwise say N. |
| 536 | |
| 537 | config PCI_8260 |
| 538 | bool |
| 539 | depends on PCI && 8260 |
Paul Mackerras | 25635c7 | 2005-10-26 16:36:55 +1000 | [diff] [blame] | 540 | select PPC_INDIRECT_PCI |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 541 | default y |
| 542 | |
| 543 | config 8260_PCI9 |
Andrew Morton | 4a3ecc6 | 2006-06-01 20:36:04 -0700 | [diff] [blame] | 544 | bool "Enable workaround for MPC826x erratum PCI 9" |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 545 | depends on PCI_8260 && !8272 |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 546 | default y |
| 547 | |
| 548 | choice |
Andrew Morton | 4a3ecc6 | 2006-06-01 20:36:04 -0700 | [diff] [blame] | 549 | prompt "IDMA channel for PCI 9 workaround" |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 550 | depends on 8260_PCI9 |
| 551 | |
| 552 | config 8260_PCI9_IDMA1 |
| 553 | bool "IDMA1" |
| 554 | |
| 555 | config 8260_PCI9_IDMA2 |
| 556 | bool "IDMA2" |
| 557 | |
| 558 | config 8260_PCI9_IDMA3 |
| 559 | bool "IDMA3" |
| 560 | |
| 561 | config 8260_PCI9_IDMA4 |
| 562 | bool "IDMA4" |
| 563 | |
| 564 | endchoice |
| 565 | |
Jake Moilanen | bb53bb3 | 2006-06-07 16:05:46 -0500 | [diff] [blame] | 566 | source "drivers/pci/pcie/Kconfig" |
| 567 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 568 | source "drivers/pci/Kconfig" |
| 569 | |
| 570 | source "drivers/pcmcia/Kconfig" |
| 571 | |
| 572 | source "drivers/pci/hotplug/Kconfig" |
| 573 | |
| 574 | endmenu |
| 575 | |
| 576 | menu "Advanced setup" |
| 577 | depends on PPC32 |
| 578 | |
| 579 | config ADVANCED_OPTIONS |
| 580 | bool "Prompt for advanced kernel configuration options" |
| 581 | help |
| 582 | This option will enable prompting for a variety of advanced kernel |
| 583 | configuration options. These options can cause the kernel to not |
| 584 | work if they are set incorrectly, but can be used to optimize certain |
| 585 | aspects of kernel memory management. |
| 586 | |
| 587 | Unless you know what you are doing, say N here. |
| 588 | |
| 589 | comment "Default settings for advanced configuration options are used" |
| 590 | depends on !ADVANCED_OPTIONS |
| 591 | |
| 592 | config HIGHMEM_START_BOOL |
| 593 | bool "Set high memory pool address" |
| 594 | depends on ADVANCED_OPTIONS && HIGHMEM |
| 595 | help |
| 596 | This option allows you to set the base address of the kernel virtual |
| 597 | area used to map high memory pages. This can be useful in |
| 598 | optimizing the layout of kernel virtual memory. |
| 599 | |
| 600 | Say N here unless you know what you are doing. |
| 601 | |
| 602 | config HIGHMEM_START |
| 603 | hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL |
| 604 | default "0xfe000000" |
| 605 | |
| 606 | config LOWMEM_SIZE_BOOL |
| 607 | bool "Set maximum low memory" |
| 608 | depends on ADVANCED_OPTIONS |
| 609 | help |
| 610 | This option allows you to set the maximum amount of memory which |
| 611 | will be used as "low memory", that is, memory which the kernel can |
| 612 | access directly, without having to set up a kernel virtual mapping. |
| 613 | This can be useful in optimizing the layout of kernel virtual |
| 614 | memory. |
| 615 | |
| 616 | Say N here unless you know what you are doing. |
| 617 | |
| 618 | config LOWMEM_SIZE |
| 619 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL |
| 620 | default "0x30000000" |
| 621 | |
| 622 | config KERNEL_START_BOOL |
| 623 | bool "Set custom kernel base address" |
| 624 | depends on ADVANCED_OPTIONS |
| 625 | help |
| 626 | This option allows you to set the kernel virtual address at which |
| 627 | the kernel will map low memory (the kernel image will be linked at |
| 628 | this address). This can be useful in optimizing the virtual memory |
| 629 | layout of the system. |
| 630 | |
| 631 | Say N here unless you know what you are doing. |
| 632 | |
| 633 | config KERNEL_START |
| 634 | hex "Virtual address of kernel base" if KERNEL_START_BOOL |
| 635 | default "0xc0000000" |
| 636 | |
| 637 | config TASK_SIZE_BOOL |
| 638 | bool "Set custom user task size" |
| 639 | depends on ADVANCED_OPTIONS |
| 640 | help |
| 641 | This option allows you to set the amount of virtual address space |
| 642 | allocated to user tasks. This can be useful in optimizing the |
| 643 | virtual memory layout of the system. |
| 644 | |
| 645 | Say N here unless you know what you are doing. |
| 646 | |
| 647 | config TASK_SIZE |
| 648 | hex "Size of user task space" if TASK_SIZE_BOOL |
Kumar Gala | 4d9e5510 | 2007-10-11 13:40:21 -0500 | [diff] [blame] | 649 | default "0x80000000" if PPC_PREP || PPC_8xx |
| 650 | default "0xc0000000" |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 651 | |
| 652 | config CONSISTENT_START_BOOL |
| 653 | bool "Set custom consistent memory pool address" |
| 654 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE |
| 655 | help |
| 656 | This option allows you to set the base virtual address |
Matt LaPlante | 4b3f686 | 2006-10-03 22:21:02 +0200 | [diff] [blame] | 657 | of the consistent memory pool. This pool of virtual |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 658 | memory is used to make consistent memory allocations. |
| 659 | |
| 660 | config CONSISTENT_START |
| 661 | hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL |
Scott Wood | ccf0d68 | 2007-07-16 11:28:18 -0500 | [diff] [blame] | 662 | default "0xfd000000" if (NOT_COHERENT_CACHE && 8xx) |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 663 | default "0xff100000" if NOT_COHERENT_CACHE |
| 664 | |
| 665 | config CONSISTENT_SIZE_BOOL |
| 666 | bool "Set custom consistent memory pool size" |
| 667 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE |
| 668 | help |
Matt LaPlante | 4b3f686 | 2006-10-03 22:21:02 +0200 | [diff] [blame] | 669 | This option allows you to set the size of the |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 670 | consistent memory pool. This pool of virtual memory |
| 671 | is used to make consistent memory allocations. |
| 672 | |
| 673 | config CONSISTENT_SIZE |
| 674 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL |
| 675 | default "0x00200000" if NOT_COHERENT_CACHE |
| 676 | |
| 677 | config BOOT_LOAD_BOOL |
| 678 | bool "Set the boot link/load address" |
| 679 | depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM |
| 680 | help |
| 681 | This option allows you to set the initial load address of the zImage |
| 682 | or zImage.initrd file. This can be useful if you are on a board |
| 683 | which has a small amount of memory. |
| 684 | |
| 685 | Say N here unless you know what you are doing. |
| 686 | |
| 687 | config BOOT_LOAD |
| 688 | hex "Link/load address for booting" if BOOT_LOAD_BOOL |
| 689 | default "0x00400000" if 40x || 8xx || 8260 |
| 690 | default "0x01000000" if 44x |
| 691 | default "0x00800000" |
| 692 | |
| 693 | config PIN_TLB |
| 694 | bool "Pinned Kernel TLBs (860 ONLY)" |
| 695 | depends on ADVANCED_OPTIONS && 8xx |
| 696 | endmenu |
| 697 | |
Stephen Rothwell | cabb558 | 2005-09-30 16:16:52 +1000 | [diff] [blame] | 698 | if PPC64 |
| 699 | config KERNEL_START |
| 700 | hex |
Stephen Rothwell | eeb2d21 | 2005-09-30 17:24:15 +1000 | [diff] [blame] | 701 | default "0xc000000000000000" |
Stephen Rothwell | cabb558 | 2005-09-30 16:16:52 +1000 | [diff] [blame] | 702 | endif |
| 703 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 704 | source "net/Kconfig" |
| 705 | |
| 706 | source "drivers/Kconfig" |
| 707 | |
| 708 | source "fs/Kconfig" |
| 709 | |
| 710 | # XXX source "arch/ppc/8xx_io/Kconfig" |
| 711 | |
| 712 | # XXX source "arch/ppc/8260_io/Kconfig" |
| 713 | |
Li Yang | 9865853 | 2006-10-03 23:10:46 -0500 | [diff] [blame] | 714 | source "arch/powerpc/sysdev/qe_lib/Kconfig" |
| 715 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 716 | source "lib/Kconfig" |
| 717 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 718 | source "arch/powerpc/Kconfig.debug" |
| 719 | |
| 720 | source "security/Kconfig" |
| 721 | |
| 722 | config KEYS_COMPAT |
| 723 | bool |
| 724 | depends on COMPAT && KEYS |
| 725 | default y |
| 726 | |
| 727 | source "crypto/Kconfig" |
Domen Puncer | 6f66828 | 2007-09-21 00:00:11 +1000 | [diff] [blame] | 728 | |
| 729 | config PPC_CLOCK |
| 730 | bool |
| 731 | default n |
Sylvain Munaut | 1088a20 | 2007-09-16 20:53:25 +1000 | [diff] [blame] | 732 | |
| 733 | config PPC_LIB_RHEAP |
| 734 | bool |
| 735 | |