Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | # |
| 2 | # For a description of the syntax of this configuration file, |
| 3 | # see Documentation/kbuild/kconfig-language.txt. |
| 4 | # |
| 5 | |
| 6 | mainmenu "Linux Kernel Configuration" |
| 7 | |
| 8 | config ARM |
| 9 | bool |
| 10 | default y |
| 11 | help |
| 12 | The ARM series is a line of low-power-consumption RISC chip designs |
| 13 | licensed by ARM ltd and targeted at embedded applications and |
| 14 | handhelds such as the Compaq IPAQ. ARM-based PCs are no longer |
| 15 | manufactured, but legacy ARM-based PC hardware remains popular in |
| 16 | Europe. There is an ARM Linux project with a web page at |
| 17 | <http://www.arm.linux.org.uk/>. |
| 18 | |
| 19 | config MMU |
| 20 | bool |
| 21 | default y |
| 22 | |
| 23 | config EISA |
| 24 | bool |
| 25 | ---help--- |
| 26 | The Extended Industry Standard Architecture (EISA) bus was |
| 27 | developed as an open alternative to the IBM MicroChannel bus. |
| 28 | |
| 29 | The EISA bus provided some of the features of the IBM MicroChannel |
| 30 | bus while maintaining backward compatibility with cards made for |
| 31 | the older ISA bus. The EISA bus saw limited use between 1988 and |
| 32 | 1995 when it was made obsolete by the PCI bus. |
| 33 | |
| 34 | Say Y here if you are building a kernel for an EISA-based machine. |
| 35 | |
| 36 | Otherwise, say N. |
| 37 | |
| 38 | config SBUS |
| 39 | bool |
| 40 | |
| 41 | config MCA |
| 42 | bool |
| 43 | help |
| 44 | MicroChannel Architecture is found in some IBM PS/2 machines and |
| 45 | laptops. It is a bus system similar to PCI or ISA. See |
| 46 | <file:Documentation/mca.txt> (and especially the web page given |
| 47 | there) before attempting to build an MCA bus kernel. |
| 48 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | config RWSEM_GENERIC_SPINLOCK |
| 50 | bool |
| 51 | default y |
| 52 | |
| 53 | config RWSEM_XCHGADD_ALGORITHM |
| 54 | bool |
| 55 | |
| 56 | config GENERIC_CALIBRATE_DELAY |
| 57 | bool |
| 58 | default y |
| 59 | |
| 60 | config GENERIC_BUST_SPINLOCK |
| 61 | bool |
| 62 | |
viro@ZenIV.linux.org.uk | a08b6b7 | 2005-09-06 01:48:42 +0100 | [diff] [blame] | 63 | config ARCH_MAY_HAVE_PC_FDC |
| 64 | bool |
| 65 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | config GENERIC_ISA_DMA |
| 67 | bool |
| 68 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | config FIQ |
| 70 | bool |
| 71 | |
Al Viro | 034d2f5 | 2005-12-19 16:27:59 -0500 | [diff] [blame^] | 72 | config ARCH_MTD_XIP |
| 73 | bool |
| 74 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | source "init/Kconfig" |
| 76 | |
| 77 | menu "System Type" |
| 78 | |
| 79 | choice |
| 80 | prompt "ARM system type" |
| 81 | default ARCH_RPC |
| 82 | |
| 83 | config ARCH_CLPS7500 |
| 84 | bool "Cirrus-CL-PS7500FE" |
| 85 | select TIMER_ACORN |
Russell King | f7e68bb | 2005-05-05 14:49:01 +0100 | [diff] [blame] | 86 | select ISA |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | |
| 88 | config ARCH_CLPS711X |
| 89 | bool "CLPS711x/EP721x-based" |
| 90 | |
| 91 | config ARCH_CO285 |
| 92 | bool "Co-EBSA285" |
| 93 | select FOOTBRIDGE |
| 94 | select FOOTBRIDGE_ADDIN |
| 95 | |
| 96 | config ARCH_EBSA110 |
| 97 | bool "EBSA-110" |
Russell King | f7e68bb | 2005-05-05 14:49:01 +0100 | [diff] [blame] | 98 | select ISA |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | help |
| 100 | This is an evaluation board for the StrongARM processor available |
| 101 | from Digital. It has limited hardware on-board, including an onboard |
| 102 | Ethernet interface, two PCMCIA sockets, two serial ports and a |
| 103 | parallel port. |
| 104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | config ARCH_FOOTBRIDGE |
| 106 | bool "FootBridge" |
| 107 | select FOOTBRIDGE |
| 108 | |
| 109 | config ARCH_INTEGRATOR |
| 110 | bool "Integrator" |
| 111 | select ARM_AMBA |
| 112 | select ICST525 |
| 113 | |
| 114 | config ARCH_IOP3XX |
| 115 | bool "IOP3xx-based" |
Russell King | f7e68bb | 2005-05-05 14:49:01 +0100 | [diff] [blame] | 116 | select PCI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | |
| 118 | config ARCH_IXP4XX |
| 119 | bool "IXP4xx-based" |
| 120 | select DMABOUNCE |
Russell King | f7e68bb | 2005-05-05 14:49:01 +0100 | [diff] [blame] | 121 | select PCI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | |
| 123 | config ARCH_IXP2000 |
| 124 | bool "IXP2400/2800-based" |
Russell King | f7e68bb | 2005-05-05 14:49:01 +0100 | [diff] [blame] | 125 | select PCI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | |
| 127 | config ARCH_L7200 |
| 128 | bool "LinkUp-L7200" |
| 129 | select FIQ |
| 130 | help |
| 131 | Say Y here if you intend to run this kernel on a LinkUp Systems |
| 132 | L7200 Software Development Board which uses an ARM720T processor. |
| 133 | Information on this board can be obtained at: |
| 134 | |
| 135 | <http://www.linkupsys.com/> |
| 136 | |
| 137 | If you have any questions or comments about the Linux kernel port |
| 138 | to this board, send e-mail to <sjhill@cotw.com>. |
| 139 | |
| 140 | config ARCH_PXA |
| 141 | bool "PXA2xx-based" |
Al Viro | 034d2f5 | 2005-12-19 16:27:59 -0500 | [diff] [blame^] | 142 | select ARCH_MTD_XIP |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | |
| 144 | config ARCH_RPC |
| 145 | bool "RiscPC" |
| 146 | select ARCH_ACORN |
| 147 | select FIQ |
| 148 | select TIMER_ACORN |
viro@ZenIV.linux.org.uk | a08b6b7 | 2005-09-06 01:48:42 +0100 | [diff] [blame] | 149 | select ARCH_MAY_HAVE_PC_FDC |
Russell King | 065909b | 2006-01-04 15:44:16 +0000 | [diff] [blame] | 150 | select ISA_DMA_API |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | help |
| 152 | On the Acorn Risc-PC, Linux can support the internal IDE disk and |
| 153 | CD-ROM interface, serial and parallel port, and the floppy drive. |
| 154 | |
| 155 | config ARCH_SA1100 |
| 156 | bool "SA1100-based" |
Russell King | f7e68bb | 2005-05-05 14:49:01 +0100 | [diff] [blame] | 157 | select ISA |
Russell King | 3cd9e19 | 2005-06-25 19:29:34 +0100 | [diff] [blame] | 158 | select ARCH_DISCONTIGMEM_ENABLE |
Al Viro | 034d2f5 | 2005-12-19 16:27:59 -0500 | [diff] [blame^] | 159 | select ARCH_MTD_XIP |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | |
| 161 | config ARCH_S3C2410 |
| 162 | bool "Samsung S3C2410" |
| 163 | help |
| 164 | Samsung S3C2410X CPU based systems, such as the Simtec Electronics |
| 165 | BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or |
| 166 | the Samsung SMDK2410 development board (and derviatives). |
| 167 | |
| 168 | config ARCH_SHARK |
| 169 | bool "Shark" |
Russell King | f7e68bb | 2005-05-05 14:49:01 +0100 | [diff] [blame] | 170 | select ISA |
| 171 | select ISA_DMA |
| 172 | select PCI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | |
| 174 | config ARCH_LH7A40X |
| 175 | bool "Sharp LH7A40X" |
| 176 | help |
| 177 | Say Y here for systems based on one of the Sharp LH7A40X |
| 178 | System on a Chip processors. These CPUs include an ARM922T |
| 179 | core with a wide array of integrated devices for |
| 180 | hand-held and low-power applications. |
| 181 | |
| 182 | config ARCH_OMAP |
| 183 | bool "TI OMAP" |
| 184 | |
| 185 | config ARCH_VERSATILE |
| 186 | bool "Versatile" |
| 187 | select ARM_AMBA |
Russell King | fa0fe48 | 2006-01-13 21:30:48 +0000 | [diff] [blame] | 188 | select ARM_VIC |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | select ICST307 |
| 190 | help |
| 191 | This enables support for ARM Ltd Versatile board. |
| 192 | |
Catalin Marinas | 8ad68bb | 2005-10-31 14:25:02 +0000 | [diff] [blame] | 193 | config ARCH_REALVIEW |
| 194 | bool "RealView" |
| 195 | select ARM_AMBA |
| 196 | select ICST307 |
| 197 | help |
| 198 | This enables support for ARM Ltd RealView boards. |
| 199 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | config ARCH_IMX |
| 201 | bool "IMX" |
| 202 | |
| 203 | config ARCH_H720X |
| 204 | bool "Hynix-HMS720x-based" |
Russell King | 065909b | 2006-01-04 15:44:16 +0000 | [diff] [blame] | 205 | select ISA_DMA_API |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | help |
| 207 | This enables support for systems based on the Hynix HMS720x |
| 208 | |
Bellido Nicolas | 038c5b6 | 2005-06-20 18:51:05 +0100 | [diff] [blame] | 209 | config ARCH_AAEC2000 |
| 210 | bool "Agilent AAEC-2000 based" |
Bellido Nicolas | 049eb32 | 2005-10-28 16:51:44 +0100 | [diff] [blame] | 211 | select ARM_AMBA |
Bellido Nicolas | 038c5b6 | 2005-06-20 18:51:05 +0100 | [diff] [blame] | 212 | help |
| 213 | This enables support for systems based on the Agilent AAEC-2000 |
| 214 | |
SAN People | 73a59c1 | 2006-01-09 17:05:41 +0000 | [diff] [blame] | 215 | config ARCH_AT91RM9200 |
| 216 | bool "AT91RM9200" |
| 217 | help |
| 218 | Say Y here if you intend to run this kernel on an AT91RM9200-based |
| 219 | board. |
| 220 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | endchoice |
| 222 | |
| 223 | source "arch/arm/mach-clps711x/Kconfig" |
| 224 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | source "arch/arm/mach-footbridge/Kconfig" |
| 226 | |
| 227 | source "arch/arm/mach-integrator/Kconfig" |
| 228 | |
| 229 | source "arch/arm/mach-iop3xx/Kconfig" |
| 230 | |
| 231 | source "arch/arm/mach-ixp4xx/Kconfig" |
| 232 | |
| 233 | source "arch/arm/mach-ixp2000/Kconfig" |
| 234 | |
| 235 | source "arch/arm/mach-pxa/Kconfig" |
| 236 | |
| 237 | source "arch/arm/mach-sa1100/Kconfig" |
| 238 | |
Tony Lindgren | d48af15 | 2005-07-10 19:58:17 +0100 | [diff] [blame] | 239 | source "arch/arm/plat-omap/Kconfig" |
| 240 | |
| 241 | source "arch/arm/mach-omap1/Kconfig" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 243 | source "arch/arm/mach-omap2/Kconfig" |
| 244 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | source "arch/arm/mach-s3c2410/Kconfig" |
| 246 | |
| 247 | source "arch/arm/mach-lh7a40x/Kconfig" |
| 248 | |
| 249 | source "arch/arm/mach-imx/Kconfig" |
| 250 | |
| 251 | source "arch/arm/mach-h720x/Kconfig" |
| 252 | |
| 253 | source "arch/arm/mach-versatile/Kconfig" |
| 254 | |
Bellido Nicolas | 038c5b6 | 2005-06-20 18:51:05 +0100 | [diff] [blame] | 255 | source "arch/arm/mach-aaec2000/Kconfig" |
| 256 | |
Catalin Marinas | 8ad68bb | 2005-10-31 14:25:02 +0000 | [diff] [blame] | 257 | source "arch/arm/mach-realview/Kconfig" |
| 258 | |
SAN People | 73a59c1 | 2006-01-09 17:05:41 +0000 | [diff] [blame] | 259 | source "arch/arm/mach-at91rm9200/Kconfig" |
| 260 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | # Definitions to make life easier |
| 262 | config ARCH_ACORN |
| 263 | bool |
| 264 | |
| 265 | source arch/arm/mm/Kconfig |
| 266 | |
| 267 | # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER |
| 268 | config XSCALE_PMU |
| 269 | bool |
| 270 | depends on CPU_XSCALE && !XSCALE_PMU_TIMER |
| 271 | default y |
| 272 | |
| 273 | endmenu |
| 274 | |
| 275 | source "arch/arm/common/Kconfig" |
| 276 | |
| 277 | config FORCE_MAX_ZONEORDER |
| 278 | int |
| 279 | depends on SA1111 |
| 280 | default "9" |
| 281 | |
| 282 | menu "Bus support" |
| 283 | |
| 284 | config ARM_AMBA |
| 285 | bool |
| 286 | |
| 287 | config ISA |
| 288 | bool |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | help |
| 290 | Find out whether you have ISA slots on your motherboard. ISA is the |
| 291 | name of a bus system, i.e. the way the CPU talks to the other stuff |
| 292 | inside your box. Other bus systems are PCI, EISA, MicroChannel |
| 293 | (MCA) or VESA. ISA is an older system, now being displaced by PCI; |
| 294 | newer boards don't support it. If you have ISA, say Y, otherwise N. |
| 295 | |
Russell King | 065909b | 2006-01-04 15:44:16 +0000 | [diff] [blame] | 296 | # Select ISA DMA controller support |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | config ISA_DMA |
| 298 | bool |
Russell King | 065909b | 2006-01-04 15:44:16 +0000 | [diff] [blame] | 299 | select ISA_DMA_API |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | |
Russell King | 065909b | 2006-01-04 15:44:16 +0000 | [diff] [blame] | 301 | # Select ISA DMA interface |
Al Viro | 5cae841 | 2005-05-04 05:39:22 +0100 | [diff] [blame] | 302 | config ISA_DMA_API |
| 303 | bool |
Al Viro | 5cae841 | 2005-05-04 05:39:22 +0100 | [diff] [blame] | 304 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | config PCI |
Catalin Marinas | c0da085 | 2005-06-20 18:51:06 +0100 | [diff] [blame] | 306 | bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | help |
| 308 | Find out whether you have a PCI motherboard. PCI is the name of a |
| 309 | bus system, i.e. the way the CPU talks to the other stuff inside |
| 310 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or |
| 311 | VESA. If you have PCI, say Y, otherwise N. |
| 312 | |
| 313 | The PCI-HOWTO, available from |
| 314 | <http://www.tldp.org/docs.html#howto>, contains valuable |
| 315 | information about which PCI hardware does work under Linux and which |
| 316 | doesn't. |
| 317 | |
| 318 | # Select the host bridge type |
| 319 | config PCI_HOST_VIA82C505 |
| 320 | bool |
| 321 | depends on PCI && ARCH_SHARK |
| 322 | default y |
| 323 | |
| 324 | source "drivers/pci/Kconfig" |
| 325 | |
| 326 | source "drivers/pcmcia/Kconfig" |
| 327 | |
| 328 | endmenu |
| 329 | |
| 330 | menu "Kernel Features" |
| 331 | |
| 332 | config SMP |
| 333 | bool "Symmetric Multi-Processing (EXPERIMENTAL)" |
Russell King | f6db449 | 2005-11-07 21:30:21 +0000 | [diff] [blame] | 334 | depends on EXPERIMENTAL && REALVIEW_MPCORE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | help |
| 336 | This enables support for systems with more than one CPU. If you have |
| 337 | a system with only one CPU, like most personal computers, say N. If |
| 338 | you have a system with more than one CPU, say Y. |
| 339 | |
| 340 | If you say N here, the kernel will run on single and multiprocessor |
| 341 | machines, but will use only one CPU of a multiprocessor machine. If |
| 342 | you say Y here, the kernel will run on many, but not all, single |
| 343 | processor machines. On a single processor machine, the kernel will |
| 344 | run faster if you say N here. |
| 345 | |
Arthur Othieno | 12c62c2 | 2005-09-10 00:26:22 -0700 | [diff] [blame] | 346 | See also the <file:Documentation/smp.txt>, |
| 347 | <file:Documentation/i386/IO-APIC.txt>, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at |
| 349 | <http://www.linuxdoc.org/docs.html#howto>. |
| 350 | |
| 351 | If you don't know what to do here, say N. |
| 352 | |
| 353 | config NR_CPUS |
| 354 | int "Maximum number of CPUs (2-32)" |
| 355 | range 2 32 |
| 356 | depends on SMP |
| 357 | default "4" |
| 358 | |
Russell King | a054a81 | 2005-11-02 22:24:33 +0000 | [diff] [blame] | 359 | config HOTPLUG_CPU |
| 360 | bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" |
| 361 | depends on SMP && HOTPLUG && EXPERIMENTAL |
| 362 | help |
| 363 | Say Y here to experiment with turning CPUs off and on. CPUs |
| 364 | can be controlled through /sys/devices/system/cpu. |
| 365 | |
Russell King | 37ee16a | 2005-11-08 19:08:05 +0000 | [diff] [blame] | 366 | config LOCAL_TIMERS |
| 367 | bool "Use local timer interrupts" |
Russell King | 2a98beb | 2005-11-09 10:50:29 +0000 | [diff] [blame] | 368 | depends on SMP && REALVIEW_MPCORE |
Russell King | 37ee16a | 2005-11-08 19:08:05 +0000 | [diff] [blame] | 369 | default y |
| 370 | help |
| 371 | Enable support for local timers on SMP platforms, rather then the |
| 372 | legacy IPI broadcast method. Local timers allows the system |
| 373 | accounting to be spread across the timer interval, preventing a |
| 374 | "thundering herd" at every timer tick. |
| 375 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | config PREEMPT |
| 377 | bool "Preemptible Kernel (EXPERIMENTAL)" |
| 378 | depends on EXPERIMENTAL |
| 379 | help |
| 380 | This option reduces the latency of the kernel when reacting to |
| 381 | real-time or interactive events by allowing a low priority process to |
| 382 | be preempted even if it is in kernel mode executing a system call. |
| 383 | This allows applications to run more reliably even when the system is |
| 384 | under load. |
| 385 | |
| 386 | Say Y here if you are building a kernel for a desktop, embedded |
| 387 | or real-time system. Say N if you are unsure. |
| 388 | |
Russell King | 8749af6 | 2005-06-25 19:39:45 +0100 | [diff] [blame] | 389 | config NO_IDLE_HZ |
| 390 | bool "Dynamic tick timer" |
| 391 | help |
| 392 | Select this option if you want to disable continuous timer ticks |
| 393 | and have them programmed to occur as required. This option saves |
| 394 | power as the system can remain in idle state for longer. |
| 395 | |
| 396 | By default dynamic tick is disabled during the boot, and can be |
| 397 | manually enabled with: |
| 398 | |
| 399 | echo 1 > /sys/devices/system/timer/timer0/dyn_tick |
| 400 | |
| 401 | Alternatively, if you want dynamic tick automatically enabled |
| 402 | during boot, pass "dyntick=enable" via the kernel command string. |
| 403 | |
Tony Lindgren | f2be64b | 2005-06-28 21:01:16 +0100 | [diff] [blame] | 404 | Please note that dynamic tick may affect the accuracy of |
| 405 | timekeeping on some platforms depending on the implementation. |
Nicolas Pitre | 569d2c3 | 2005-09-01 12:48:48 +0100 | [diff] [blame] | 406 | Currently at least OMAP, PXA2xx and SA11x0 platforms are known |
| 407 | to have accurate timekeeping with dynamic tick. |
Tony Lindgren | f2be64b | 2005-06-28 21:01:16 +0100 | [diff] [blame] | 408 | |
Nicolas Pitre | 704bdda | 2006-01-14 16:33:50 +0000 | [diff] [blame] | 409 | config AEABI |
| 410 | bool "Use the ARM EABI to compile the kernel" |
| 411 | help |
| 412 | This option allows for the kernel to be compiled using the latest |
| 413 | ARM ABI (aka EABI). This is only useful if you are using a user |
| 414 | space environment that is also compiled with EABI. |
| 415 | |
| 416 | Since there are major incompatibilities between the legacy ABI and |
| 417 | EABI, especially with regard to structure member alignment, this |
| 418 | option also changes the kernel syscall calling convention to |
| 419 | disambiguate both ABIs and allow for backward compatibility support |
| 420 | (selected with CONFIG_OABI_COMPAT). |
| 421 | |
| 422 | To use this you need GCC version 4.0.0 or later. |
| 423 | |
Nicolas Pitre | 6c90c87 | 2006-01-14 16:37:15 +0000 | [diff] [blame] | 424 | config OABI_COMPAT |
| 425 | bool "Allow old ABI binaries to run with this kernel" |
| 426 | depends on AEABI |
| 427 | default y |
| 428 | help |
| 429 | This option preserves the old syscall interface along with the |
| 430 | new (ARM EABI) one. It also provides a compatibility layer to |
| 431 | intercept syscalls that have structure arguments which layout |
| 432 | in memory differs between the legacy ABI and the new ARM EABI |
| 433 | (only for non "thumb" binaries). This option adds a tiny |
| 434 | overhead to all syscalls and produces a slightly larger kernel. |
| 435 | If you know you'll be using only pure EABI user space then you |
| 436 | can say N here. If this option is not selected and you attempt |
| 437 | to execute a legacy ABI binary then the result will be |
| 438 | UNPREDICTABLE (in fact it can be predicted that it won't work |
| 439 | at all). If in doubt say Y. |
| 440 | |
Dave Hansen | 3f22ab2 | 2005-06-23 00:07:43 -0700 | [diff] [blame] | 441 | config ARCH_DISCONTIGMEM_ENABLE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | bool |
Russell King | f7e68bb | 2005-05-05 14:49:01 +0100 | [diff] [blame] | 443 | default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | help |
| 445 | Say Y to support efficient handling of discontiguous physical memory, |
| 446 | for architectures which are either NUMA (Non-Uniform Memory Access) |
| 447 | or have huge holes in the physical address space for other reasons. |
| 448 | See <file:Documentation/vm/numa> for more. |
| 449 | |
Dave Hansen | 3f22ab2 | 2005-06-23 00:07:43 -0700 | [diff] [blame] | 450 | source "mm/Kconfig" |
| 451 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | config LEDS |
| 453 | bool "Timer and CPU usage LEDs" |
| 454 | depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \ |
| 455 | ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \ |
| 456 | ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ |
| 457 | ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ |
SAN People | 73a59c1 | 2006-01-09 17:05:41 +0000 | [diff] [blame] | 458 | ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ |
| 459 | ARCH_AT91RM9200 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | help |
| 461 | If you say Y here, the LEDs on your machine will be used |
| 462 | to provide useful information about your current system status. |
| 463 | |
| 464 | If you are compiling a kernel for a NetWinder or EBSA-285, you will |
| 465 | be able to select which LEDs are active using the options below. If |
| 466 | you are compiling a kernel for the EBSA-110 or the LART however, the |
| 467 | red LED will simply flash regularly to indicate that the system is |
| 468 | still functional. It is safe to say Y here if you have a CATS |
| 469 | system, but the driver will do nothing. |
| 470 | |
| 471 | config LEDS_TIMER |
| 472 | bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ |
| 473 | MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 |
| 474 | depends on LEDS |
| 475 | default y if ARCH_EBSA110 |
| 476 | help |
| 477 | If you say Y here, one of the system LEDs (the green one on the |
| 478 | NetWinder, the amber one on the EBSA285, or the red one on the LART) |
| 479 | will flash regularly to indicate that the system is still |
| 480 | operational. This is mainly useful to kernel hackers who are |
| 481 | debugging unstable kernels. |
| 482 | |
| 483 | The LART uses the same LED for both Timer LED and CPU usage LED |
| 484 | functions. You may choose to use both, but the Timer LED function |
| 485 | will overrule the CPU usage LED. |
| 486 | |
| 487 | config LEDS_CPU |
| 488 | bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ |
| 489 | !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 |
| 490 | depends on LEDS |
| 491 | help |
| 492 | If you say Y here, the red LED will be used to give a good real |
| 493 | time indication of CPU usage, by lighting whenever the idle task |
| 494 | is not currently executing. |
| 495 | |
| 496 | The LART uses the same LED for both Timer LED and CPU usage LED |
| 497 | functions. You may choose to use both, but the Timer LED function |
| 498 | will overrule the CPU usage LED. |
| 499 | |
| 500 | config ALIGNMENT_TRAP |
| 501 | bool |
| 502 | default y if !ARCH_EBSA110 |
| 503 | help |
| 504 | ARM processors can not fetch/store information which is not |
| 505 | naturally aligned on the bus, i.e., a 4 byte fetch must start at an |
| 506 | address divisible by 4. On 32-bit ARM processors, these non-aligned |
| 507 | fetch/store instructions will be emulated in software if you say |
| 508 | here, which has a severe performance impact. This is necessary for |
| 509 | correct operation of some network protocols. With an IP-only |
| 510 | configuration it is safe to say N, otherwise say Y. |
| 511 | |
| 512 | endmenu |
| 513 | |
| 514 | menu "Boot options" |
| 515 | |
| 516 | # Compressed boot loader in ROM. Yes, we really want to ask about |
| 517 | # TEXT and BSS so we preserve their values in the config files. |
| 518 | config ZBOOT_ROM_TEXT |
| 519 | hex "Compressed ROM boot loader base address" |
| 520 | default "0" |
| 521 | help |
| 522 | The physical address at which the ROM-able zImage is to be |
| 523 | placed in the target. Platforms which normally make use of |
| 524 | ROM-able zImage formats normally set this to a suitable |
| 525 | value in their defconfig file. |
| 526 | |
| 527 | If ZBOOT_ROM is not enabled, this has no effect. |
| 528 | |
| 529 | config ZBOOT_ROM_BSS |
| 530 | hex "Compressed ROM boot loader BSS address" |
| 531 | default "0" |
| 532 | help |
| 533 | The base address of 64KiB of read/write memory in the target |
| 534 | for the ROM-able zImage, which must be available while the |
| 535 | decompressor is running. Platforms which normally make use of |
| 536 | ROM-able zImage formats normally set this to a suitable |
| 537 | value in their defconfig file. |
| 538 | |
| 539 | If ZBOOT_ROM is not enabled, this has no effect. |
| 540 | |
| 541 | config ZBOOT_ROM |
| 542 | bool "Compressed boot loader in ROM/flash" |
| 543 | depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS |
| 544 | help |
| 545 | Say Y here if you intend to execute your compressed kernel image |
| 546 | (zImage) directly from ROM or flash. If unsure, say N. |
| 547 | |
| 548 | config CMDLINE |
| 549 | string "Default kernel command string" |
| 550 | default "" |
| 551 | help |
| 552 | On some architectures (EBSA110 and CATS), there is currently no way |
| 553 | for the boot loader to pass arguments to the kernel. For these |
| 554 | architectures, you should supply some command-line options at build |
| 555 | time by entering them here. As a minimum, you should specify the |
| 556 | memory size and the root device (e.g., mem=64M root=/dev/nfs). |
| 557 | |
| 558 | config XIP_KERNEL |
| 559 | bool "Kernel Execute-In-Place from ROM" |
| 560 | depends on !ZBOOT_ROM |
| 561 | help |
| 562 | Execute-In-Place allows the kernel to run from non-volatile storage |
| 563 | directly addressable by the CPU, such as NOR flash. This saves RAM |
| 564 | space since the text section of the kernel is not loaded from flash |
| 565 | to RAM. Read-write sections, such as the data section and stack, |
| 566 | are still copied to RAM. The XIP kernel is not compressed since |
| 567 | it has to run directly from flash, so it will take more space to |
| 568 | store it. The flash address used to link the kernel object files, |
| 569 | and for storing it, is configuration dependent. Therefore, if you |
| 570 | say Y here, you must know the proper physical address where to |
| 571 | store the kernel image depending on your own flash memory usage. |
| 572 | |
| 573 | Also note that the make target becomes "make xipImage" rather than |
| 574 | "make zImage" or "make Image". The final kernel binary to put in |
| 575 | ROM memory will be arch/arm/boot/xipImage. |
| 576 | |
| 577 | If unsure, say N. |
| 578 | |
| 579 | config XIP_PHYS_ADDR |
| 580 | hex "XIP Kernel Physical Location" |
| 581 | depends on XIP_KERNEL |
| 582 | default "0x00080000" |
| 583 | help |
| 584 | This is the physical address in your flash memory the kernel will |
| 585 | be linked for and stored to. This address is dependent on your |
| 586 | own flash usage. |
| 587 | |
| 588 | endmenu |
| 589 | |
Tony Lindgren | ec6bced | 2005-07-10 19:58:20 +0100 | [diff] [blame] | 590 | if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | |
| 592 | menu "CPU Frequency scaling" |
| 593 | |
| 594 | source "drivers/cpufreq/Kconfig" |
| 595 | |
| 596 | config CPU_FREQ_SA1100 |
| 597 | bool |
Vincent Sanders | 07c6d48 | 2005-06-09 21:59:22 +0100 | [diff] [blame] | 598 | depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | default y |
| 600 | |
| 601 | config CPU_FREQ_SA1110 |
| 602 | bool |
| 603 | depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3) |
| 604 | default y |
| 605 | |
| 606 | config CPU_FREQ_INTEGRATOR |
| 607 | tristate "CPUfreq driver for ARM Integrator CPUs" |
| 608 | depends on ARCH_INTEGRATOR && CPU_FREQ |
| 609 | default y |
| 610 | help |
| 611 | This enables the CPUfreq driver for ARM Integrator CPUs. |
| 612 | |
| 613 | For details, take a look at <file:Documentation/cpu-freq>. |
| 614 | |
| 615 | If in doubt, say Y. |
| 616 | |
| 617 | endmenu |
| 618 | |
| 619 | endif |
| 620 | |
| 621 | menu "Floating point emulation" |
| 622 | |
| 623 | comment "At least one emulation must be selected" |
| 624 | |
| 625 | config FPE_NWFPE |
| 626 | bool "NWFPE math emulation" |
Nicolas Pitre | 8993a44 | 2006-01-14 16:36:50 +0000 | [diff] [blame] | 627 | depends on !AEABI || OABI_COMPAT |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | ---help--- |
| 629 | Say Y to include the NWFPE floating point emulator in the kernel. |
| 630 | This is necessary to run most binaries. Linux does not currently |
| 631 | support floating point hardware so you need to say Y here even if |
| 632 | your machine has an FPA or floating point co-processor podule. |
| 633 | |
| 634 | You may say N here if you are going to load the Acorn FPEmulator |
| 635 | early in the bootup. |
| 636 | |
| 637 | config FPE_NWFPE_XP |
| 638 | bool "Support extended precision" |
Lennert Buytenhek | bedf142 | 2005-11-07 21:12:08 +0000 | [diff] [blame] | 639 | depends on FPE_NWFPE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | help |
| 641 | Say Y to include 80-bit support in the kernel floating-point |
| 642 | emulator. Otherwise, only 32 and 64-bit support is compiled in. |
| 643 | Note that gcc does not generate 80-bit operations by default, |
| 644 | so in most cases this option only enlarges the size of the |
| 645 | floating point emulator without any good reason. |
| 646 | |
| 647 | You almost surely want to say N here. |
| 648 | |
| 649 | config FPE_FASTFPE |
| 650 | bool "FastFPE math emulation (EXPERIMENTAL)" |
Nicolas Pitre | 8993a44 | 2006-01-14 16:36:50 +0000 | [diff] [blame] | 651 | depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | ---help--- |
| 653 | Say Y here to include the FAST floating point emulator in the kernel. |
| 654 | This is an experimental much faster emulator which now also has full |
| 655 | precision for the mantissa. It does not support any exceptions. |
| 656 | It is very simple, and approximately 3-6 times faster than NWFPE. |
| 657 | |
| 658 | It should be sufficient for most programs. It may be not suitable |
| 659 | for scientific calculations, but you have to check this for yourself. |
| 660 | If you do not feel you need a faster FP emulation you should better |
| 661 | choose NWFPE. |
| 662 | |
| 663 | config VFP |
| 664 | bool "VFP-format floating point maths" |
| 665 | depends on CPU_V6 || CPU_ARM926T |
| 666 | help |
| 667 | Say Y to include VFP support code in the kernel. This is needed |
| 668 | if your hardware includes a VFP unit. |
| 669 | |
| 670 | Please see <file:Documentation/arm/VFP/release-notes.txt> for |
| 671 | release notes and additional status information. |
| 672 | |
| 673 | Say N if your target does not have VFP hardware. |
| 674 | |
| 675 | endmenu |
| 676 | |
| 677 | menu "Userspace binary formats" |
| 678 | |
| 679 | source "fs/Kconfig.binfmt" |
| 680 | |
| 681 | config ARTHUR |
| 682 | tristate "RISC OS personality" |
Nicolas Pitre | 704bdda | 2006-01-14 16:33:50 +0000 | [diff] [blame] | 683 | depends on !AEABI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | help |
| 685 | Say Y here to include the kernel code necessary if you want to run |
| 686 | Acorn RISC OS/Arthur binaries under Linux. This code is still very |
| 687 | experimental; if this sounds frightening, say N and sleep in peace. |
| 688 | You can also say M here to compile this support as a module (which |
| 689 | will be called arthur). |
| 690 | |
| 691 | endmenu |
| 692 | |
| 693 | menu "Power management options" |
| 694 | |
Russell King | eceab4a | 2005-11-15 11:31:41 +0000 | [diff] [blame] | 695 | source "kernel/power/Kconfig" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | config APM |
| 698 | tristate "Advanced Power Management Emulation" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 699 | ---help--- |
| 700 | APM is a BIOS specification for saving power using several different |
| 701 | techniques. This is mostly useful for battery powered laptops with |
| 702 | APM compliant BIOSes. If you say Y here, the system time will be |
| 703 | reset after a RESUME operation, the /proc/apm device will provide |
| 704 | battery status information, and user-space programs will receive |
| 705 | notification of APM "events" (e.g. battery status change). |
| 706 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | In order to use APM, you will need supporting software. For location |
| 708 | and more information, read <file:Documentation/pm.txt> and the |
| 709 | Battery Powered Linux mini-HOWTO, available from |
| 710 | <http://www.tldp.org/docs.html#howto>. |
| 711 | |
| 712 | This driver does not spin down disk drives (see the hdparm(8) |
| 713 | manpage ("man 8 hdparm") for that), and it doesn't turn off |
| 714 | VESA-compliant "green" monitors. |
| 715 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 716 | Generally, if you don't have a battery in your machine, there isn't |
| 717 | much point in using this driver and you should say N. If you get |
| 718 | random kernel OOPSes or reboots that don't seem to be related to |
| 719 | anything, try disabling/enabling this option (or disabling/enabling |
| 720 | APM in your BIOS). |
| 721 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | endmenu |
| 723 | |
Sam Ravnborg | d5950b4 | 2005-07-11 21:03:49 -0700 | [diff] [blame] | 724 | source "net/Kconfig" |
| 725 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | menu "Device Drivers" |
| 727 | |
| 728 | source "drivers/base/Kconfig" |
| 729 | |
Pavel Machek | c35bf4a | 2005-11-12 20:25:25 +0000 | [diff] [blame] | 730 | source "drivers/connector/Kconfig" |
| 731 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | if ALIGNMENT_TRAP |
| 733 | source "drivers/mtd/Kconfig" |
| 734 | endif |
| 735 | |
| 736 | source "drivers/parport/Kconfig" |
| 737 | |
| 738 | source "drivers/pnp/Kconfig" |
| 739 | |
| 740 | source "drivers/block/Kconfig" |
| 741 | |
| 742 | source "drivers/acorn/block/Kconfig" |
| 743 | |
David Brownell | bb011b8 | 2005-06-12 23:26:05 +0100 | [diff] [blame] | 744 | if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \ |
| 745 | || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \ |
Russell King | d56c524 | 2005-11-04 17:28:34 +0000 | [diff] [blame] | 746 | || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | source "drivers/ide/Kconfig" |
| 748 | endif |
| 749 | |
| 750 | source "drivers/scsi/Kconfig" |
| 751 | |
| 752 | source "drivers/md/Kconfig" |
| 753 | |
| 754 | source "drivers/message/fusion/Kconfig" |
| 755 | |
| 756 | source "drivers/ieee1394/Kconfig" |
| 757 | |
| 758 | source "drivers/message/i2o/Kconfig" |
| 759 | |
Sam Ravnborg | d5950b4 | 2005-07-11 21:03:49 -0700 | [diff] [blame] | 760 | source "drivers/net/Kconfig" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | |
| 762 | source "drivers/isdn/Kconfig" |
| 763 | |
| 764 | # input before char - char/joystick depends on it. As does USB. |
| 765 | |
| 766 | source "drivers/input/Kconfig" |
| 767 | |
| 768 | source "drivers/char/Kconfig" |
| 769 | |
| 770 | source "drivers/i2c/Kconfig" |
| 771 | |
David Brownell | 8ae12a0 | 2006-01-08 13:34:19 -0800 | [diff] [blame] | 772 | source "drivers/spi/Kconfig" |
| 773 | |
Jean Delvare | ad2f931 | 2005-07-02 18:15:49 +0200 | [diff] [blame] | 774 | source "drivers/hwmon/Kconfig" |
| 775 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | #source "drivers/l3/Kconfig" |
| 777 | |
| 778 | source "drivers/misc/Kconfig" |
| 779 | |
Russell King | a4e137a | 2005-08-18 10:06:59 +0100 | [diff] [blame] | 780 | source "drivers/mfd/Kconfig" |
| 781 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | source "drivers/media/Kconfig" |
| 783 | |
| 784 | source "drivers/video/Kconfig" |
| 785 | |
| 786 | source "sound/Kconfig" |
| 787 | |
| 788 | source "drivers/usb/Kconfig" |
| 789 | |
| 790 | source "drivers/mmc/Kconfig" |
| 791 | |
| 792 | endmenu |
| 793 | |
| 794 | source "fs/Kconfig" |
| 795 | |
| 796 | source "arch/arm/oprofile/Kconfig" |
| 797 | |
| 798 | source "arch/arm/Kconfig.debug" |
| 799 | |
| 800 | source "security/Kconfig" |
| 801 | |
| 802 | source "crypto/Kconfig" |
| 803 | |
| 804 | source "lib/Kconfig" |