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 | |
Jeremy Fitzhardinge | 600715d | 2008-09-11 01:31:45 -0700 | [diff] [blame] | 22 | config ARCH_PHYS_ADDR_T_64BIT |
| 23 | def_bool PPC64 || PHYS_64BIT |
| 24 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 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 | |
Christoph Hellwig | fd3e0bb | 2008-04-17 14:35:00 +1000 | [diff] [blame] | 52 | config STACKTRACE_SUPPORT |
| 53 | bool |
| 54 | default y |
| 55 | |
Arnd Bergmann | 01f4b8b | 2008-07-11 00:08:18 +1000 | [diff] [blame] | 56 | config HAVE_LATENCYTOP_SUPPORT |
| 57 | def_bool y |
| 58 | |
Benjamin Herrenschmidt | 945feb1 | 2008-04-17 14:35:01 +1000 | [diff] [blame] | 59 | config TRACE_IRQFLAGS_SUPPORT |
| 60 | bool |
| 61 | depends on PPC64 |
| 62 | default y |
| 63 | |
| 64 | config LOCKDEP_SUPPORT |
| 65 | bool |
| 66 | default y |
| 67 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 68 | config RWSEM_GENERIC_SPINLOCK |
| 69 | bool |
| 70 | |
| 71 | config RWSEM_XCHGADD_ALGORITHM |
| 72 | bool |
| 73 | default y |
| 74 | |
Nick Piggin | 95c354f | 2008-01-30 13:31:20 +0100 | [diff] [blame] | 75 | config GENERIC_LOCKBREAK |
| 76 | bool |
| 77 | default y |
| 78 | depends on SMP && PREEMPT |
| 79 | |
David Howells | f0d1b0b | 2006-12-08 02:37:49 -0800 | [diff] [blame] | 80 | config ARCH_HAS_ILOG2_U32 |
| 81 | bool |
David Howells | ef55d53 | 2006-12-08 02:37:53 -0800 | [diff] [blame] | 82 | default y |
David Howells | f0d1b0b | 2006-12-08 02:37:49 -0800 | [diff] [blame] | 83 | |
| 84 | config ARCH_HAS_ILOG2_U64 |
| 85 | bool |
David Howells | ef55d53 | 2006-12-08 02:37:53 -0800 | [diff] [blame] | 86 | default y if 64BIT |
David Howells | f0d1b0b | 2006-12-08 02:37:49 -0800 | [diff] [blame] | 87 | |
Akinobu Mita | e779b2f | 2006-03-26 01:39:33 -0800 | [diff] [blame] | 88 | config GENERIC_HWEIGHT |
| 89 | bool |
| 90 | default y |
| 91 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 92 | config GENERIC_CALIBRATE_DELAY |
| 93 | bool |
| 94 | default y |
| 95 | |
Jon Mason | 0a9cb46 | 2006-05-19 15:35:32 -0500 | [diff] [blame] | 96 | config GENERIC_FIND_NEXT_BIT |
| 97 | bool |
| 98 | default y |
| 99 | |
Anton Vorontsov | b7ce341 | 2008-04-11 23:06:36 +1000 | [diff] [blame] | 100 | config GENERIC_GPIO |
| 101 | bool |
| 102 | help |
| 103 | Generic GPIO API support |
| 104 | |
Stephen Rothwell | f057eac | 2007-07-15 23:40:05 -0700 | [diff] [blame] | 105 | config ARCH_NO_VIRT_TO_BUS |
| 106 | def_bool PPC64 |
| 107 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 108 | config PPC |
| 109 | bool |
| 110 | default y |
Steven Rostedt | 2b79d69 | 2009-01-06 18:49:17 +0000 | [diff] [blame^] | 111 | select HAVE_FTRACE_MCOUNT_RECORD |
| 112 | select HAVE_DYNAMIC_FTRACE |
Steven Rostedt | 606576c | 2008-10-06 19:06:12 -0400 | [diff] [blame] | 113 | select HAVE_FUNCTION_TRACER |
Michael Buesch | 7444a72 | 2008-07-25 01:46:11 -0700 | [diff] [blame] | 114 | select ARCH_WANT_OPTIONAL_GPIOLIB |
Sam Ravnborg | ec7748b | 2008-02-09 10:46:40 +0100 | [diff] [blame] | 115 | select HAVE_IDE |
Benjamin Herrenschmidt | a1f242f | 2008-07-23 21:27:08 -0700 | [diff] [blame] | 116 | select HAVE_IOREMAP_PROT |
Johannes Berg | 58340a0 | 2008-07-25 01:45:33 -0700 | [diff] [blame] | 117 | select HAVE_EFFICIENT_UNALIGNED_ACCESS |
Mathieu Desnoyers | 3f55009 | 2008-02-02 15:10:35 -0500 | [diff] [blame] | 118 | select HAVE_KPROBES |
Jason Wessel | 17ce452 | 2008-07-23 11:30:15 -0500 | [diff] [blame] | 119 | select HAVE_ARCH_KGDB |
Ananth N Mavinakayanahalli | 9edddaa | 2008-03-04 14:28:37 -0800 | [diff] [blame] | 120 | select HAVE_KRETPROBES |
Roland McGrath | dec2b0d | 2008-07-27 16:53:20 +1000 | [diff] [blame] | 121 | select HAVE_ARCH_TRACEHOOK |
David S. Miller | d9b2b2a | 2008-02-13 16:56:49 -0800 | [diff] [blame] | 122 | select HAVE_LMB |
Takashi Iwai | 7ff86b0 | 2008-07-16 02:20:11 +0200 | [diff] [blame] | 123 | select HAVE_DMA_ATTRS if PPC64 |
Jens Axboe | b7d7a24 | 2008-06-26 11:22:13 +0200 | [diff] [blame] | 124 | select USE_GENERIC_SMP_HELPERS if SMP |
Steven Rostedt | 4e491d1 | 2008-05-14 23:49:44 -0400 | [diff] [blame] | 125 | select HAVE_OPROFILE |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 126 | |
| 127 | config EARLY_PRINTK |
| 128 | bool |
Benjamin Herrenschmidt | 51d3082 | 2005-11-23 17:57:25 +1100 | [diff] [blame] | 129 | default y |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 130 | |
| 131 | config COMPAT |
| 132 | bool |
| 133 | default y if PPC64 |
Roland McGrath | 01e31db | 2008-01-02 17:03:11 -0800 | [diff] [blame] | 134 | select COMPAT_BINFMT_ELF |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 135 | |
| 136 | config SYSVIPC_COMPAT |
| 137 | bool |
| 138 | depends on COMPAT && SYSVIPC |
| 139 | default y |
| 140 | |
| 141 | # All PPC32s use generic nvram driver through ppc_md |
| 142 | config GENERIC_NVRAM |
| 143 | bool |
| 144 | default y if PPC32 |
| 145 | |
Ingo Molnar | ae1e913 | 2008-11-11 09:05:16 +0100 | [diff] [blame] | 146 | config SCHED_OMIT_FRAME_POINTER |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 147 | bool |
| 148 | default y |
| 149 | |
| 150 | config ARCH_MAY_HAVE_PC_FDC |
| 151 | bool |
Stephen Rothwell | bed5927 | 2007-03-04 17:04:44 +1100 | [diff] [blame] | 152 | default !PPC_PSERIES || PCI |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 153 | |
Kumar Gala | 08264cb | 2006-01-10 21:43:56 -0600 | [diff] [blame] | 154 | config PPC_OF |
| 155 | def_bool y |
| 156 | |
Stephen Rothwell | 97e873e | 2007-05-01 16:26:07 +1000 | [diff] [blame] | 157 | config OF |
| 158 | def_bool y |
| 159 | |
Kumar Gala | 08264cb | 2006-01-10 21:43:56 -0600 | [diff] [blame] | 160 | config PPC_UDBG_16550 |
| 161 | bool |
| 162 | default n |
| 163 | |
Kumar Gala | 08264cb | 2006-01-10 21:43:56 -0600 | [diff] [blame] | 164 | config GENERIC_TBSYNC |
| 165 | bool |
| 166 | default y if PPC32 && SMP |
| 167 | default n |
| 168 | |
Al Viro | e65e1fc | 2006-09-12 03:04:40 -0400 | [diff] [blame] | 169 | config AUDIT_ARCH |
| 170 | bool |
| 171 | default y |
| 172 | |
Jeremy Fitzhardinge | 73c9cea | 2006-12-08 03:30:41 -0800 | [diff] [blame] | 173 | config GENERIC_BUG |
| 174 | bool |
| 175 | default y |
| 176 | depends on BUG |
| 177 | |
Johannes Berg | b302887 | 2007-03-20 05:18:02 +1100 | [diff] [blame] | 178 | config SYS_SUPPORTS_APM_EMULATION |
Kumar Gala | 58da10b | 2007-05-23 09:51:46 -0500 | [diff] [blame] | 179 | default y if PMAC_APM_EMU |
Johannes Berg | b302887 | 2007-03-20 05:18:02 +1100 | [diff] [blame] | 180 | bool |
| 181 | |
Kumar Gala | f4fc4a5 | 2006-01-16 10:53:22 -0600 | [diff] [blame] | 182 | config DEFAULT_UIMAGE |
| 183 | bool |
| 184 | help |
| 185 | Used to allow a board to specify it wants a uImage built by default |
| 186 | default n |
| 187 | |
Scott Wood | b09c164 | 2008-01-17 16:31:40 -0600 | [diff] [blame] | 188 | config REDBOOT |
| 189 | bool |
| 190 | |
Johannes Berg | 801e406 | 2007-12-08 02:12:39 +0100 | [diff] [blame] | 191 | config HIBERNATE_32 |
Johannes Berg | 543b9fd | 2007-05-03 22:31:38 +1000 | [diff] [blame] | 192 | bool |
Johannes Berg | 801e406 | 2007-12-08 02:12:39 +0100 | [diff] [blame] | 193 | depends on (PPC_PMAC && !SMP) || BROKEN |
| 194 | default y |
| 195 | |
| 196 | config HIBERNATE_64 |
| 197 | bool |
| 198 | depends on BROKEN || (PPC_PMAC64 && EXPERIMENTAL) |
| 199 | default y |
| 200 | |
| 201 | config ARCH_HIBERNATION_POSSIBLE |
| 202 | bool |
| 203 | depends on (PPC64 && HIBERNATE_64) || (PPC32 && HIBERNATE_32) |
Johannes Berg | 543b9fd | 2007-05-03 22:31:38 +1000 | [diff] [blame] | 204 | default y |
| 205 | |
Johannes Berg | f4cb570 | 2007-12-08 02:14:00 +0100 | [diff] [blame] | 206 | config ARCH_SUSPEND_POSSIBLE |
| 207 | def_bool y |
Scott Wood | d49747b | 2007-10-09 12:37:13 -0500 | [diff] [blame] | 208 | depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx |
Johannes Berg | f4cb570 | 2007-12-08 02:14:00 +0100 | [diff] [blame] | 209 | |
Benjamin Herrenschmidt | 4c75a6f | 2006-11-11 17:24:53 +1100 | [diff] [blame] | 210 | config PPC_DCR_NATIVE |
| 211 | bool |
| 212 | default n |
| 213 | |
| 214 | config PPC_DCR_MMIO |
| 215 | bool |
| 216 | default n |
| 217 | |
| 218 | config PPC_DCR |
| 219 | bool |
| 220 | depends on PPC_DCR_NATIVE || PPC_DCR_MMIO |
| 221 | default y |
| 222 | |
Benjamin Herrenschmidt | 4c9d280 | 2006-11-11 17:25:08 +1100 | [diff] [blame] | 223 | config PPC_OF_PLATFORM_PCI |
| 224 | bool |
Stephen Rothwell | 373a6da | 2007-12-21 15:37:07 +1100 | [diff] [blame] | 225 | depends on PCI |
Benjamin Herrenschmidt | 4c9d280 | 2006-11-11 17:25:08 +1100 | [diff] [blame] | 226 | depends on PPC64 # not supported on 32 bits yet |
| 227 | default n |
| 228 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 229 | source "init/Kconfig" |
| 230 | |
Matt Helsley | dc52ddc | 2008-10-18 20:27:21 -0700 | [diff] [blame] | 231 | source "kernel/Kconfig.freezer" |
| 232 | |
Benjamin Herrenschmidt | a2d2e1e | 2007-12-21 15:39:24 +1100 | [diff] [blame] | 233 | source "arch/powerpc/sysdev/Kconfig" |
Kumar Gala | 4330f5d | 2007-03-16 09:32:17 -0500 | [diff] [blame] | 234 | source "arch/powerpc/platforms/Kconfig" |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 235 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 236 | menu "Kernel options" |
| 237 | |
| 238 | config HIGHMEM |
| 239 | bool "High memory support" |
| 240 | depends on PPC32 |
| 241 | |
Tony Breeds | 1ad7499 | 2007-09-21 13:26:03 +1000 | [diff] [blame] | 242 | source kernel/time/Kconfig |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 243 | source kernel/Kconfig.hz |
| 244 | source kernel/Kconfig.preempt |
| 245 | source "fs/Kconfig.binfmt" |
| 246 | |
Mel Gorman | ba72cb8 | 2007-11-28 16:21:13 -0800 | [diff] [blame] | 247 | config HUGETLB_PAGE_SIZE_VARIABLE |
| 248 | bool |
| 249 | depends on HUGETLB_PAGE |
| 250 | default y |
| 251 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 252 | config MATH_EMULATION |
| 253 | bool "Math emulation" |
Kumar Gala | 4d52719 | 2007-01-26 00:23:34 -0600 | [diff] [blame] | 254 | depends on 4xx || 8xx || E200 || PPC_MPC832x || E500 |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 255 | ---help--- |
| 256 | Some PowerPC chips designed for embedded applications do not have |
| 257 | a floating-point unit and therefore do not implement the |
| 258 | floating-point instructions in the PowerPC instruction set. If you |
| 259 | say Y here, the kernel will include code to emulate a floating-point |
| 260 | unit, which will allow programs that use floating-point |
| 261 | instructions to run. |
| 262 | |
Scott Wood | 5dd57a1 | 2007-09-18 15:29:35 -0500 | [diff] [blame] | 263 | config 8XX_MINIMAL_FPEMU |
| 264 | bool "Minimal math emulation for 8xx" |
| 265 | depends on 8xx && !MATH_EMULATION |
| 266 | help |
| 267 | Older arch/ppc kernels still emulated a few floating point |
| 268 | instructions such as load and store, even when full math |
| 269 | emulation is disabled. Say "Y" here if you want to preserve |
| 270 | this behavior. |
| 271 | |
| 272 | It is recommended that you build a soft-float userspace instead. |
| 273 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 274 | config IOMMU_VMERGE |
Linas Vepstas | 768cc2d | 2007-07-18 02:09:35 +1000 | [diff] [blame] | 275 | bool "Enable IOMMU virtual merging" |
| 276 | depends on PPC64 |
| 277 | default y |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 278 | help |
| 279 | Cause IO segments sent to a device for DMA to be merged virtually |
| 280 | by the IOMMU when they happen to have been allocated contiguously. |
| 281 | This doesn't add pressure to the IOMMU allocator. However, some |
| 282 | drivers don't support getting large merged segments coming back |
Linas Vepstas | 768cc2d | 2007-07-18 02:09:35 +1000 | [diff] [blame] | 283 | from *_map_sg(). |
| 284 | |
| 285 | 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] | 286 | |
FUJITA Tomonori | fb3475e | 2008-02-04 22:28:08 -0800 | [diff] [blame] | 287 | config IOMMU_HELPER |
| 288 | def_bool PPC64 |
| 289 | |
Becky Bruce | 15e09c0 | 2008-11-20 06:49:16 +0000 | [diff] [blame] | 290 | config PPC_NEED_DMA_SYNC_OPS |
| 291 | def_bool y |
| 292 | depends on NOT_COHERENT_CACHE |
| 293 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 294 | config HOTPLUG_CPU |
| 295 | bool "Support for enabling/disabling CPUs" |
| 296 | depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC) |
| 297 | ---help--- |
| 298 | Say Y here to be able to disable and re-enable individual |
| 299 | CPUs at runtime on SMP machines. |
| 300 | |
| 301 | Say N if you are unsure. |
| 302 | |
Yasunori Goto | cc57637 | 2006-06-29 02:24:27 -0700 | [diff] [blame] | 303 | config ARCH_ENABLE_MEMORY_HOTPLUG |
| 304 | def_bool y |
| 305 | |
Badari Pulavarty | a99824f | 2008-02-05 00:10:18 -0800 | [diff] [blame] | 306 | config ARCH_HAS_WALK_MEMORY |
| 307 | def_bool y |
| 308 | |
Badari Pulavarty | 1482471 | 2008-02-05 00:10:17 -0800 | [diff] [blame] | 309 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
| 310 | def_bool y |
| 311 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 312 | config KEXEC |
| 313 | bool "kexec system call (EXPERIMENTAL)" |
Dale Farnsworth | fd4ba7e | 2007-05-12 10:58:43 +1000 | [diff] [blame] | 314 | depends on (PPC_PRPMC2800 || PPC_MULTIPLATFORM) && EXPERIMENTAL |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 315 | help |
| 316 | kexec is a system call that implements the ability to shutdown your |
| 317 | current kernel, and to start another kernel. It is like a reboot |
Matt LaPlante | 1f1332f | 2006-06-29 01:32:47 -0400 | [diff] [blame] | 318 | but it is independent of the system firmware. And like a reboot |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 319 | you can start any kernel with it, not just Linux. |
| 320 | |
Matt LaPlante | 1f1332f | 2006-06-29 01:32:47 -0400 | [diff] [blame] | 321 | The name comes from the similarity to the exec system call. |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 322 | |
| 323 | It is an ongoing process to be certain the hardware in a machine |
| 324 | is properly shutdown, so do not be surprised if this code does not |
| 325 | initially work for you. It may help to enable device hotplugging |
| 326 | support. As of this writing the exact hardware interface is |
| 327 | strongly in flux, so no good recommendation can be made. |
| 328 | |
Haren Myneni | e8625d46 | 2006-01-14 13:48:25 -0800 | [diff] [blame] | 329 | config CRASH_DUMP |
Bernhard Walle | 3420b5d | 2008-06-27 03:02:15 +1000 | [diff] [blame] | 330 | bool "Build a kdump crash kernel" |
Mohan Kumar M | c6ac71a | 2009-01-06 00:23:01 +0000 | [diff] [blame] | 331 | depends on PPC64 || 6xx |
| 332 | select RELOCATABLE if PPC64 |
Haren Myneni | e8625d46 | 2006-01-14 13:48:25 -0800 | [diff] [blame] | 333 | help |
| 334 | Build a kernel suitable for use as a kdump capture kernel. |
Mohan Kumar M | 54622f1 | 2008-10-21 17:38:10 +0000 | [diff] [blame] | 335 | The same kernel binary can be used as production kernel and dump |
| 336 | capture kernel. |
Haren Myneni | e8625d46 | 2006-01-14 13:48:25 -0800 | [diff] [blame] | 337 | |
Manish Ahuja | 242f271 | 2008-03-22 10:50:50 +1100 | [diff] [blame] | 338 | config PHYP_DUMP |
| 339 | bool "Hypervisor-assisted dump (EXPERIMENTAL)" |
| 340 | depends on PPC_PSERIES && EXPERIMENTAL |
| 341 | help |
| 342 | Hypervisor-assisted dump is meant to be a kdump replacement |
| 343 | offering robustness and speed not possible without system |
| 344 | hypervisor assistence. |
| 345 | |
| 346 | If unsure, say "N" |
| 347 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 348 | config PPCBUG_NVRAM |
| 349 | bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC |
| 350 | default y if PPC_PREP |
| 351 | |
| 352 | config IRQ_ALL_CPUS |
| 353 | bool "Distribute interrupts on all CPUs by default" |
| 354 | depends on SMP && !MV64360 |
| 355 | help |
| 356 | This option gives the kernel permission to distribute IRQs across |
| 357 | multiple CPUs. Saying N here will route all IRQs to the first |
| 358 | CPU. Generally saying Y is safe, although some problems have been |
| 359 | reported with SMP Power Macintoshes with this option enabled. |
| 360 | |
Andy Whitcroft | ffa27b6 | 2005-10-28 17:46:58 -0700 | [diff] [blame] | 361 | config NUMA |
| 362 | bool "NUMA support" |
| 363 | depends on PPC64 |
| 364 | default y if SMP && PPC_PSERIES |
| 365 | |
Yasunori Goto | c80d79d | 2006-04-10 22:53:53 -0700 | [diff] [blame] | 366 | config NODES_SHIFT |
| 367 | int |
| 368 | default "4" |
| 369 | depends on NEED_MULTIPLE_NODES |
| 370 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 371 | config ARCH_SELECT_MEMORY_MODEL |
| 372 | def_bool y |
| 373 | depends on PPC64 |
| 374 | |
| 375 | config ARCH_FLATMEM_ENABLE |
Andy Whitcroft | 9100b20 | 2005-11-29 19:20:55 +0000 | [diff] [blame] | 376 | def_bool y |
| 377 | depends on (PPC64 && !NUMA) || PPC32 |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 378 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 379 | config ARCH_SPARSEMEM_ENABLE |
| 380 | def_bool y |
Andy Whitcroft | 9100b20 | 2005-11-29 19:20:55 +0000 | [diff] [blame] | 381 | depends on PPC64 |
Andy Whitcroft | d29eff7 | 2007-10-16 01:24:17 -0700 | [diff] [blame] | 382 | select SPARSEMEM_VMEMMAP_ENABLE |
Anton Blanchard | 45fb6ce | 2005-11-11 14:22:35 +1100 | [diff] [blame] | 383 | |
| 384 | config ARCH_SPARSEMEM_DEFAULT |
| 385 | def_bool y |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 386 | depends on (SMP && PPC_PSERIES) || PPC_PS3 |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 387 | |
Mel Gorman | c67c3cb | 2006-09-27 01:49:49 -0700 | [diff] [blame] | 388 | config ARCH_POPULATES_NODE_MAP |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 389 | def_bool y |
Mel Gorman | c67c3cb | 2006-09-27 01:49:49 -0700 | [diff] [blame] | 390 | |
| 391 | source "mm/Kconfig" |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 392 | |
Mike Kravetz | 7e9191d | 2005-11-07 09:39:48 -0800 | [diff] [blame] | 393 | config ARCH_MEMORY_PROBE |
| 394 | def_bool y |
| 395 | depends on MEMORY_HOTPLUG |
| 396 | |
Andy Whitcroft | 7516795 | 2006-10-21 10:24:14 -0700 | [diff] [blame] | 397 | # Some NUMA nodes have memory ranges that span |
| 398 | # other nodes. Even though a pfn is valid and |
| 399 | # between a node's start and end pfns, it may not |
| 400 | # reside on that node. See memmap_init_zone() |
| 401 | # for details. |
| 402 | config NODES_SPAN_OTHER_NODES |
| 403 | def_bool y |
| 404 | depends on NEED_MULTIPLE_NODES |
| 405 | |
Benjamin Herrenschmidt | 16c2d47 | 2007-05-08 16:27:28 +1000 | [diff] [blame] | 406 | config PPC_HAS_HASH_64K |
| 407 | bool |
| 408 | depends on PPC64 |
| 409 | default n |
| 410 | |
Ilya Yanok | ca9153a | 2008-12-11 04:55:41 +0300 | [diff] [blame] | 411 | choice |
| 412 | prompt "Page size" |
| 413 | default PPC_4K_PAGES |
Benjamin Herrenschmidt | 3c726f8 | 2005-11-07 11:06:55 +1100 | [diff] [blame] | 414 | help |
Ilya Yanok | ca9153a | 2008-12-11 04:55:41 +0300 | [diff] [blame] | 415 | Select the kernel logical page size. Increasing the page size |
| 416 | will reduce software overhead at each page boundary, allow |
| 417 | hardware prefetch mechanisms to be more effective, and allow |
| 418 | larger dma transfers increasing IO efficiency and reducing |
| 419 | overhead. However the utilization of memory will increase. |
| 420 | For example, each cached file will using a multiple of the |
| 421 | page size to hold its contents and the difference between the |
| 422 | end of file and the end of page is wasted. |
| 423 | |
| 424 | Some dedicated systems, such as software raid serving with |
| 425 | accelerated calculations, have shown significant increases. |
| 426 | |
| 427 | If you configure a 64 bit kernel for 64k pages but the |
| 428 | processor does not support them, then the kernel will simulate |
| 429 | them with 4k pages, loading them on demand, but with the |
| 430 | reduced software overhead and larger internal fragmentation. |
| 431 | For the 32 bit kernel, a large page option will not be offered |
| 432 | unless it is supported by the configured processor. |
| 433 | |
| 434 | If unsure, choose 4K_PAGES. |
| 435 | |
| 436 | config PPC_4K_PAGES |
| 437 | bool "4k page size" |
| 438 | |
| 439 | config PPC_16K_PAGES |
| 440 | bool "16k page size" if 44x |
| 441 | |
| 442 | config PPC_64K_PAGES |
| 443 | bool "64k page size" if 44x || PPC_STD_MMU_64 |
| 444 | select PPC_HAS_HASH_64K if PPC_STD_MMU_64 |
| 445 | |
| 446 | endchoice |
Benjamin Herrenschmidt | 3c726f8 | 2005-11-07 11:06:55 +1100 | [diff] [blame] | 447 | |
Stephen Rothwell | 53bcddb | 2008-04-11 11:11:56 +1000 | [diff] [blame] | 448 | config FORCE_MAX_ZONEORDER |
| 449 | int "Maximum zone order" |
Ilya Yanok | ca9153a | 2008-12-11 04:55:41 +0300 | [diff] [blame] | 450 | range 9 64 if PPC_STD_MMU_64 && PPC_64K_PAGES |
| 451 | default "9" if PPC_STD_MMU_64 && PPC_64K_PAGES |
| 452 | range 13 64 if PPC_STD_MMU_64 && !PPC_64K_PAGES |
| 453 | default "13" if PPC_STD_MMU_64 && !PPC_64K_PAGES |
| 454 | range 9 64 if PPC_STD_MMU_32 && PPC_16K_PAGES |
| 455 | default "9" if PPC_STD_MMU_32 && PPC_16K_PAGES |
| 456 | range 7 64 if PPC_STD_MMU_32 && PPC_64K_PAGES |
| 457 | default "7" if PPC_STD_MMU_32 && PPC_64K_PAGES |
Johannes Berg | ebe40c5 | 2008-09-24 04:29:08 +0000 | [diff] [blame] | 458 | range 11 64 |
Stephen Rothwell | 53bcddb | 2008-04-11 11:11:56 +1000 | [diff] [blame] | 459 | default "11" |
| 460 | help |
| 461 | The kernel memory allocator divides physically contiguous memory |
| 462 | blocks into "zones", where each zone is a power of two number of |
| 463 | pages. This option selects the largest power of two that the kernel |
| 464 | keeps in the memory allocator. If you need to allocate very large |
| 465 | blocks of physically contiguous memory, then you may need to |
| 466 | increase this value. |
| 467 | |
| 468 | This config option is actually maximum order plus one. For example, |
| 469 | a value of 11 means that the largest free memory block is 2^10 pages. |
| 470 | |
| 471 | The page size is not necessarily 4KB. For example, on 64-bit |
| 472 | systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep |
| 473 | this in mind when choosing a value for this option. |
| 474 | |
Paul Mackerras | fa28237 | 2008-01-24 08:35:13 +1100 | [diff] [blame] | 475 | config PPC_SUBPAGE_PROT |
| 476 | bool "Support setting protections for 4k subpages" |
Ilya Yanok | ca9153a | 2008-12-11 04:55:41 +0300 | [diff] [blame] | 477 | depends on PPC_STD_MMU_64 && PPC_64K_PAGES |
Paul Mackerras | fa28237 | 2008-01-24 08:35:13 +1100 | [diff] [blame] | 478 | help |
| 479 | This option adds support for a system call to allow user programs |
| 480 | to set access permissions (read/write, readonly, or no access) |
| 481 | on the 4k subpages of each 64k page. |
| 482 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 483 | config SCHED_SMT |
| 484 | bool "SMT (Hyperthreading) scheduler support" |
| 485 | depends on PPC64 && SMP |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 486 | help |
| 487 | SMT scheduler support improves the CPU scheduler's decision making |
| 488 | when dealing with POWER5 cpus at a cost of slightly increased |
| 489 | overhead in some places. If unsure say N here. |
| 490 | |
| 491 | config PROC_DEVICETREE |
Paul Mackerras | 5f29675 | 2005-10-17 20:14:59 +1000 | [diff] [blame] | 492 | bool "Support for device tree in /proc" |
| 493 | depends on PROC_FS |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 494 | help |
| 495 | This option adds a device-tree directory under /proc which contains |
| 496 | an image of the device tree that the kernel copies from Open |
Paul Mackerras | 5f29675 | 2005-10-17 20:14:59 +1000 | [diff] [blame] | 497 | Firmware or other boot firmware. If unsure, say Y here. |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 498 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 499 | config CMDLINE_BOOL |
| 500 | bool "Default bootloader kernel arguments" |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 501 | |
| 502 | config CMDLINE |
| 503 | string "Initial kernel command string" |
| 504 | depends on CMDLINE_BOOL |
| 505 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" |
| 506 | help |
| 507 | On some platforms, there is currently no way for the boot loader to |
| 508 | pass arguments to the kernel. For these platforms, you can supply |
| 509 | some command-line options at build time by entering them here. In |
| 510 | most cases you will need to specify the root device here. |
| 511 | |
Grant Likely | c356aa4 | 2008-07-09 09:41:52 -0600 | [diff] [blame] | 512 | config EXTRA_TARGETS |
| 513 | string "Additional default image types" |
| 514 | help |
| 515 | List additional targets to be built by the bootwrapper here (separated |
| 516 | by spaces). This is useful for targets that depend of device tree |
| 517 | files in the .dts directory. |
| 518 | |
| 519 | Targets in this list will be build as part of the default build |
| 520 | target, or when the user does a 'make zImage' or a |
| 521 | 'make zImage.initrd'. |
| 522 | |
| 523 | If unsure, leave blank |
| 524 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 525 | if !44x || BROKEN |
Johannes Berg | b28f508 | 2008-01-15 23:17:00 -0500 | [diff] [blame] | 526 | config ARCH_WANTS_FREEZER_CONTROL |
| 527 | def_bool y |
| 528 | depends on ADB_PMU |
| 529 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 530 | source kernel/power/Kconfig |
| 531 | endif |
| 532 | |
| 533 | config SECCOMP |
| 534 | bool "Enable seccomp to safely compute untrusted bytecode" |
| 535 | depends on PROC_FS |
| 536 | default y |
| 537 | help |
| 538 | This kernel feature is useful for number crunching applications |
| 539 | that may need to compute untrusted bytecode during their |
| 540 | execution. By using pipes or other transports made available to |
| 541 | the process as file descriptors supporting the read/write |
| 542 | syscalls, it's possible to isolate those applications in |
| 543 | their own address space using seccomp. Once seccomp is |
| 544 | enabled via /proc/<pid>/seccomp, it cannot be disabled |
| 545 | and the task is only allowed to execute a few safe syscalls |
| 546 | defined by each seccomp mode. |
| 547 | |
| 548 | If unsure, say Y. Only embedded should say N here. |
| 549 | |
| 550 | endmenu |
| 551 | |
| 552 | config ISA_DMA_API |
| 553 | bool |
Stephen Rothwell | 373a6da | 2007-12-21 15:37:07 +1100 | [diff] [blame] | 554 | default !PPC_ISERIES || PCI |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 555 | |
| 556 | menu "Bus options" |
| 557 | |
| 558 | config ISA |
| 559 | bool "Support for ISA-bus hardware" |
| 560 | depends on PPC_PREP || PPC_CHRP |
Paul Mackerras | f9bd170 | 2005-10-26 16:47:42 +1000 | [diff] [blame] | 561 | select PPC_I8259 |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 562 | help |
| 563 | Find out whether you have ISA slots on your motherboard. ISA is the |
| 564 | name of a bus system, i.e. the way the CPU talks to the other stuff |
| 565 | inside your box. If you have an Apple machine, say N here; if you |
| 566 | have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If |
| 567 | you have an embedded board, consult your board documentation. |
| 568 | |
Christoph Lameter | 5ac6da6 | 2007-02-10 01:43:14 -0800 | [diff] [blame] | 569 | config ZONE_DMA |
| 570 | bool |
| 571 | default y |
| 572 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 573 | config GENERIC_ISA_DMA |
| 574 | bool |
| 575 | depends on PPC64 || POWER4 || 6xx && !CPM2 |
| 576 | default y |
| 577 | |
Paul Mackerras | 25635c7 | 2005-10-26 16:36:55 +1000 | [diff] [blame] | 578 | config PPC_INDIRECT_PCI |
| 579 | bool |
| 580 | depends on PCI |
Becky Bruce | 63dafe5 | 2006-01-14 16:57:39 -0600 | [diff] [blame] | 581 | default y if 40x || 44x |
Paul Mackerras | 25635c7 | 2005-10-26 16:36:55 +1000 | [diff] [blame] | 582 | default n |
| 583 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 584 | config EISA |
| 585 | bool |
| 586 | |
| 587 | config SBUS |
| 588 | bool |
| 589 | |
Kumar Gala | 08264cb | 2006-01-10 21:43:56 -0600 | [diff] [blame] | 590 | config FSL_SOC |
| 591 | bool |
| 592 | |
Roy Zang | 55c4499 | 2007-07-10 18:44:34 +0800 | [diff] [blame] | 593 | config FSL_PCI |
| 594 | bool |
| 595 | select PPC_INDIRECT_PCI |
| 596 | |
Stefan Roese | 2a70691 | 2008-03-26 22:39:50 +1100 | [diff] [blame] | 597 | config 4xx_SOC |
| 598 | bool |
| 599 | |
Anton Vorontsov | acaa7aa | 2008-04-11 21:03:40 +0400 | [diff] [blame] | 600 | config FSL_LBC |
| 601 | bool |
| 602 | help |
| 603 | Freescale Localbus support |
| 604 | |
Anton Vorontsov | 83ff9dc | 2008-05-23 20:38:54 +0400 | [diff] [blame] | 605 | config FSL_GTM |
| 606 | bool |
| 607 | depends on PPC_83xx || QUICC_ENGINE || CPM2 |
| 608 | help |
| 609 | Freescale General-purpose Timers support |
| 610 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 611 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
| 612 | config MCA |
| 613 | bool |
| 614 | |
John Rigby | b500563 | 2008-06-26 11:07:56 -0600 | [diff] [blame] | 615 | # Platforms that what PCI turned unconditionally just do select PCI |
| 616 | # in their config node. Platforms that want to choose at config |
| 617 | # time should select PPC_PCI_CHOICE |
| 618 | config PPC_PCI_CHOICE |
| 619 | bool |
| 620 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 621 | config PCI |
John Rigby | b500563 | 2008-06-26 11:07:56 -0600 | [diff] [blame] | 622 | bool "PCI support" if PPC_PCI_CHOICE |
| 623 | default y if !40x && !CPM2 && !8xx && !PPC_83xx \ |
Jon Loeliger | 5315862 | 2006-08-09 10:37:28 -0500 | [diff] [blame] | 624 | && !PPC_85xx && !PPC_86xx |
David Gibson | f21f49e | 2007-06-13 14:52:54 +1000 | [diff] [blame] | 625 | default PCI_PERMEDIA if !4xx && !CPM2 && !8xx |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 626 | default PCI_QSPAN if !4xx && !CPM2 && 8xx |
Michael Ellerman | df87ef5 | 2007-05-08 12:58:34 +1000 | [diff] [blame] | 627 | select ARCH_SUPPORTS_MSI |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 628 | help |
| 629 | Find out whether your system includes a PCI bus. PCI is the name of |
| 630 | a bus system, i.e. the way the CPU talks to the other stuff inside |
| 631 | your box. If you say Y here, the kernel will include drivers and |
| 632 | infrastructure code to support PCI bus devices. |
| 633 | |
| 634 | config PCI_DOMAINS |
Matthew Wilcox | 36e2359 | 2007-07-10 10:54:40 -0600 | [diff] [blame] | 635 | def_bool PCI |
| 636 | |
| 637 | config PCI_SYSCALL |
| 638 | def_bool PCI |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 639 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 640 | config PCI_QSPAN |
| 641 | bool "QSpan PCI" |
| 642 | depends on !4xx && !CPM2 && 8xx |
Paul Mackerras | f9bd170 | 2005-10-26 16:47:42 +1000 | [diff] [blame] | 643 | select PPC_I8259 |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 644 | help |
| 645 | Say Y here if you have a system based on a Motorola 8xx-series |
| 646 | embedded processor with a QSPAN PCI interface, otherwise say N. |
| 647 | |
| 648 | config PCI_8260 |
| 649 | bool |
| 650 | depends on PCI && 8260 |
Paul Mackerras | 25635c7 | 2005-10-26 16:36:55 +1000 | [diff] [blame] | 651 | select PPC_INDIRECT_PCI |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 652 | default y |
| 653 | |
| 654 | config 8260_PCI9 |
Andrew Morton | 4a3ecc6 | 2006-06-01 20:36:04 -0700 | [diff] [blame] | 655 | bool "Enable workaround for MPC826x erratum PCI 9" |
Scott Wood | e00c549 | 2007-09-14 15:41:56 -0500 | [diff] [blame] | 656 | depends on PCI_8260 && !8272 |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 657 | default y |
| 658 | |
| 659 | choice |
Andrew Morton | 4a3ecc6 | 2006-06-01 20:36:04 -0700 | [diff] [blame] | 660 | prompt "IDMA channel for PCI 9 workaround" |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 661 | depends on 8260_PCI9 |
| 662 | |
| 663 | config 8260_PCI9_IDMA1 |
| 664 | bool "IDMA1" |
| 665 | |
| 666 | config 8260_PCI9_IDMA2 |
| 667 | bool "IDMA2" |
| 668 | |
| 669 | config 8260_PCI9_IDMA3 |
| 670 | bool "IDMA3" |
| 671 | |
| 672 | config 8260_PCI9_IDMA4 |
| 673 | bool "IDMA4" |
| 674 | |
| 675 | endchoice |
| 676 | |
Jake Moilanen | bb53bb3 | 2006-06-07 16:05:46 -0500 | [diff] [blame] | 677 | source "drivers/pci/pcie/Kconfig" |
| 678 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 679 | source "drivers/pci/Kconfig" |
| 680 | |
| 681 | source "drivers/pcmcia/Kconfig" |
| 682 | |
| 683 | source "drivers/pci/hotplug/Kconfig" |
| 684 | |
Zhang Wei | f1f389d | 2008-04-18 13:33:39 -0700 | [diff] [blame] | 685 | config HAS_RAPIDIO |
| 686 | bool |
| 687 | default n |
| 688 | |
| 689 | config RAPIDIO |
| 690 | bool "RapidIO support" |
| 691 | depends on HAS_RAPIDIO |
| 692 | help |
| 693 | If you say Y here, the kernel will include drivers and |
| 694 | infrastructure code to support RapidIO interconnect devices. |
| 695 | |
| 696 | source "drivers/rapidio/Kconfig" |
| 697 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 698 | endmenu |
| 699 | |
| 700 | menu "Advanced setup" |
| 701 | depends on PPC32 |
| 702 | |
| 703 | config ADVANCED_OPTIONS |
| 704 | bool "Prompt for advanced kernel configuration options" |
| 705 | help |
| 706 | This option will enable prompting for a variety of advanced kernel |
| 707 | configuration options. These options can cause the kernel to not |
| 708 | work if they are set incorrectly, but can be used to optimize certain |
| 709 | aspects of kernel memory management. |
| 710 | |
| 711 | Unless you know what you are doing, say N here. |
| 712 | |
| 713 | comment "Default settings for advanced configuration options are used" |
| 714 | depends on !ADVANCED_OPTIONS |
| 715 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 716 | config LOWMEM_SIZE_BOOL |
| 717 | bool "Set maximum low memory" |
| 718 | depends on ADVANCED_OPTIONS |
| 719 | help |
| 720 | This option allows you to set the maximum amount of memory which |
| 721 | will be used as "low memory", that is, memory which the kernel can |
| 722 | access directly, without having to set up a kernel virtual mapping. |
| 723 | This can be useful in optimizing the layout of kernel virtual |
| 724 | memory. |
| 725 | |
| 726 | Say N here unless you know what you are doing. |
| 727 | |
| 728 | config LOWMEM_SIZE |
| 729 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL |
| 730 | default "0x30000000" |
| 731 | |
Kumar Gala | 37dd2ba | 2008-04-22 04:22:34 +1000 | [diff] [blame] | 732 | config RELOCATABLE |
| 733 | bool "Build a relocatable kernel (EXPERIMENTAL)" |
| 734 | depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE |
| 735 | help |
| 736 | This builds a kernel image that is capable of running at the |
| 737 | location the kernel is loaded at (some alignment restrictions may |
| 738 | exist). |
| 739 | |
| 740 | One use is for the kexec on panic case where the recovery kernel |
| 741 | must live at a different physical address than the primary |
| 742 | kernel. |
| 743 | |
| 744 | Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address |
| 745 | it has been loaded at and the compile time physical addresses |
| 746 | CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START |
| 747 | setting can still be useful to bootwrappers that need to know the |
| 748 | load location of the kernel (eg. u-boot/mkimage). |
| 749 | |
| 750 | config PAGE_OFFSET_BOOL |
| 751 | bool "Set custom page offset address" |
| 752 | depends on ADVANCED_OPTIONS |
| 753 | help |
| 754 | This option allows you to set the kernel virtual address at which |
| 755 | the kernel will map low memory. This can be useful in optimizing |
| 756 | the virtual memory layout of the system. |
| 757 | |
| 758 | Say N here unless you know what you are doing. |
| 759 | |
| 760 | config PAGE_OFFSET |
| 761 | hex "Virtual address of memory base" if PAGE_OFFSET_BOOL |
| 762 | default "0xc0000000" |
| 763 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 764 | config KERNEL_START_BOOL |
| 765 | bool "Set custom kernel base address" |
| 766 | depends on ADVANCED_OPTIONS |
| 767 | help |
| 768 | This option allows you to set the kernel virtual address at which |
Kumar Gala | 37dd2ba | 2008-04-22 04:22:34 +1000 | [diff] [blame] | 769 | the kernel will be loaded. Normally this should match PAGE_OFFSET |
| 770 | however there are times (like kdump) that one might not want them |
| 771 | to be the same. |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 772 | |
| 773 | Say N here unless you know what you are doing. |
| 774 | |
| 775 | config KERNEL_START |
| 776 | hex "Virtual address of kernel base" if KERNEL_START_BOOL |
Kumar Gala | 37dd2ba | 2008-04-22 04:22:34 +1000 | [diff] [blame] | 777 | default PAGE_OFFSET if PAGE_OFFSET_BOOL |
| 778 | default "0xc2000000" if CRASH_DUMP |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 779 | default "0xc0000000" |
| 780 | |
Kumar Gala | 37dd2ba | 2008-04-22 04:22:34 +1000 | [diff] [blame] | 781 | config PHYSICAL_START_BOOL |
| 782 | bool "Set physical address where the kernel is loaded" |
| 783 | depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE |
| 784 | help |
| 785 | This gives the physical address where the kernel is loaded. |
| 786 | |
| 787 | Say N here unless you know what you are doing. |
| 788 | |
| 789 | config PHYSICAL_START |
| 790 | hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL |
| 791 | default "0x02000000" if PPC_STD_MMU && CRASH_DUMP |
| 792 | default "0x00000000" |
| 793 | |
| 794 | config PHYSICAL_ALIGN |
| 795 | hex |
| 796 | default "0x10000000" if FSL_BOOKE |
| 797 | help |
| 798 | This value puts the alignment restrictions on physical address |
| 799 | where kernel is loaded and run from. Kernel is compiled for an |
| 800 | address which meets above alignment restriction. |
| 801 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 802 | config TASK_SIZE_BOOL |
| 803 | bool "Set custom user task size" |
| 804 | depends on ADVANCED_OPTIONS |
| 805 | help |
| 806 | This option allows you to set the amount of virtual address space |
| 807 | allocated to user tasks. This can be useful in optimizing the |
| 808 | virtual memory layout of the system. |
| 809 | |
| 810 | Say N here unless you know what you are doing. |
| 811 | |
| 812 | config TASK_SIZE |
| 813 | hex "Size of user task space" if TASK_SIZE_BOOL |
Kumar Gala | 4d9e5510 | 2007-10-11 13:40:21 -0500 | [diff] [blame] | 814 | default "0x80000000" if PPC_PREP || PPC_8xx |
| 815 | default "0xc0000000" |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 816 | |
| 817 | config CONSISTENT_START_BOOL |
| 818 | bool "Set custom consistent memory pool address" |
| 819 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE |
| 820 | help |
| 821 | This option allows you to set the base virtual address |
Matt LaPlante | 4b3f686 | 2006-10-03 22:21:02 +0200 | [diff] [blame] | 822 | of the consistent memory pool. This pool of virtual |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 823 | memory is used to make consistent memory allocations. |
| 824 | |
| 825 | config CONSISTENT_START |
| 826 | hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL |
Scott Wood | ccf0d68 | 2007-07-16 11:28:18 -0500 | [diff] [blame] | 827 | default "0xfd000000" if (NOT_COHERENT_CACHE && 8xx) |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 828 | default "0xff100000" if NOT_COHERENT_CACHE |
| 829 | |
| 830 | config CONSISTENT_SIZE_BOOL |
| 831 | bool "Set custom consistent memory pool size" |
| 832 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE |
| 833 | help |
Matt LaPlante | 4b3f686 | 2006-10-03 22:21:02 +0200 | [diff] [blame] | 834 | This option allows you to set the size of the |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 835 | consistent memory pool. This pool of virtual memory |
| 836 | is used to make consistent memory allocations. |
| 837 | |
| 838 | config CONSISTENT_SIZE |
| 839 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL |
| 840 | default "0x00200000" if NOT_COHERENT_CACHE |
| 841 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 842 | config PIN_TLB |
| 843 | bool "Pinned Kernel TLBs (860 ONLY)" |
| 844 | depends on ADVANCED_OPTIONS && 8xx |
| 845 | endmenu |
| 846 | |
Stephen Rothwell | cabb558 | 2005-09-30 16:16:52 +1000 | [diff] [blame] | 847 | if PPC64 |
Paul Mackerras | 549e815 | 2008-08-30 11:43:47 +1000 | [diff] [blame] | 848 | config RELOCATABLE |
| 849 | bool "Build a relocatable kernel" |
| 850 | help |
| 851 | This builds a kernel image that is capable of running anywhere |
| 852 | in the RMA (real memory area) at any 16k-aligned base address. |
| 853 | The kernel is linked as a position-independent executable (PIE) |
| 854 | and contains dynamic relocations which are processed early |
| 855 | in the bootup process. |
| 856 | |
| 857 | One use is for the kexec on panic case where the recovery kernel |
| 858 | must live at a different physical address than the primary |
| 859 | kernel. |
| 860 | |
Kumar Gala | 37dd2ba | 2008-04-22 04:22:34 +1000 | [diff] [blame] | 861 | config PAGE_OFFSET |
Stephen Rothwell | cabb558 | 2005-09-30 16:16:52 +1000 | [diff] [blame] | 862 | hex |
Stephen Rothwell | eeb2d21 | 2005-09-30 17:24:15 +1000 | [diff] [blame] | 863 | default "0xc000000000000000" |
Kumar Gala | 37dd2ba | 2008-04-22 04:22:34 +1000 | [diff] [blame] | 864 | config KERNEL_START |
| 865 | hex |
Kumar Gala | 37dd2ba | 2008-04-22 04:22:34 +1000 | [diff] [blame] | 866 | default "0xc000000000000000" |
| 867 | config PHYSICAL_START |
| 868 | hex |
Kumar Gala | 37dd2ba | 2008-04-22 04:22:34 +1000 | [diff] [blame] | 869 | default "0x00000000" |
Stephen Rothwell | cabb558 | 2005-09-30 16:16:52 +1000 | [diff] [blame] | 870 | endif |
| 871 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 872 | source "net/Kconfig" |
| 873 | |
| 874 | source "drivers/Kconfig" |
| 875 | |
| 876 | source "fs/Kconfig" |
| 877 | |
| 878 | # XXX source "arch/ppc/8xx_io/Kconfig" |
| 879 | |
| 880 | # XXX source "arch/ppc/8260_io/Kconfig" |
| 881 | |
Li Yang | 9865853 | 2006-10-03 23:10:46 -0500 | [diff] [blame] | 882 | source "arch/powerpc/sysdev/qe_lib/Kconfig" |
| 883 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 884 | source "lib/Kconfig" |
| 885 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 886 | source "arch/powerpc/Kconfig.debug" |
| 887 | |
| 888 | source "security/Kconfig" |
| 889 | |
| 890 | config KEYS_COMPAT |
| 891 | bool |
| 892 | depends on COMPAT && KEYS |
| 893 | default y |
| 894 | |
| 895 | source "crypto/Kconfig" |
Domen Puncer | 6f66828 | 2007-09-21 00:00:11 +1000 | [diff] [blame] | 896 | |
| 897 | config PPC_CLOCK |
| 898 | bool |
| 899 | default n |
David Brownell | 9483a57 | 2008-07-23 21:26:48 -0700 | [diff] [blame] | 900 | select HAVE_CLK |
Sylvain Munaut | 1088a20 | 2007-09-16 20:53:25 +1000 | [diff] [blame] | 901 | |
| 902 | config PPC_LIB_RHEAP |
| 903 | bool |
| 904 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 905 | source "arch/powerpc/kvm/Kconfig" |