1 # SPDX-License-Identifier: GPL-2.0 2 config PGTABLE_LEVELS 3 int "Page Table Levels" if !IA64_PAGE_SIZE_64KB 4 range 3 4 if !IA64_PAGE_SIZE_64KB 5 default 3 6 7 menu "Processor type and features" 8 9 config IA64 10 bool 11 select ARCH_HAS_DMA_MARK_CLEAN 12 select ARCH_HAS_STRNCPY_FROM_USER 13 select ARCH_HAS_STRNLEN_USER 14 select ARCH_MIGHT_HAVE_PC_PARPORT 15 select ARCH_MIGHT_HAVE_PC_SERIO 16 select ACPI 17 select ACPI_NUMA if NUMA 18 select ARCH_ENABLE_MEMORY_HOTPLUG 19 select ARCH_ENABLE_MEMORY_HOTREMOVE 20 select ARCH_SUPPORTS_ACPI 21 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI 22 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI 23 select FORCE_PCI 24 select PCI_DOMAINS if PCI 25 select PCI_MSI 26 select PCI_SYSCALL if PCI 27 select HAVE_ASM_MODVERSIONS 28 select HAVE_UNSTABLE_SCHED_CLOCK 29 select HAVE_EXIT_THREAD 30 select HAVE_KPROBES 31 select HAVE_KRETPROBES 32 select HAVE_FTRACE_MCOUNT_RECORD 33 select HAVE_DYNAMIC_FTRACE if (!ITANIUM) 34 select HAVE_FUNCTION_TRACER 35 select TTY 36 select HAVE_ARCH_TRACEHOOK 37 select HAVE_VIRT_CPU_ACCOUNTING 38 select HUGETLB_PAGE_SIZE_VARIABLE if HUGETLB_PAGE 39 select VIRT_TO_BUS 40 select GENERIC_IRQ_PROBE 41 select GENERIC_PENDING_IRQ if SMP 42 select GENERIC_IRQ_SHOW 43 select GENERIC_IRQ_LEGACY 44 select ARCH_HAVE_NMI_SAFE_CMPXCHG 45 select GENERIC_IOMAP 46 select GENERIC_SMP_IDLE_THREAD 47 select ARCH_TASK_STRUCT_ON_STACK 48 select ARCH_TASK_STRUCT_ALLOCATOR 49 select ARCH_THREAD_STACK_ALLOCATOR 50 select ARCH_CLOCKSOURCE_DATA 51 select GENERIC_TIME_VSYSCALL 52 select LEGACY_TIMER_TICK 53 select SWIOTLB 54 select SYSCTL_ARCH_UNALIGN_NO_WARN 55 select HAVE_MOD_ARCH_SPECIFIC 56 select MODULES_USE_ELF_RELA 57 select ARCH_USE_CMPXCHG_LOCKREF 58 select HAVE_ARCH_AUDITSYSCALL 59 select NEED_DMA_MAP_STATE 60 select NEED_SG_DMA_LENGTH 61 select NUMA if !FLATMEM 62 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI 63 select SET_FS 64 select ZONE_DMA32 65 default y 66 help 67 The Itanium Processor Family is Intel's 64-bit successor to 68 the 32-bit X86 line. The IA-64 Linux project has a home 69 page at <http://www.linuxia64.org/> and a mailing list at 70 <linux-ia64@vger.kernel.org>. 71 72 config 64BIT 73 bool 74 select ATA_NONSTANDARD if ATA 75 default y 76 77 config MMU 78 bool 79 default y 80 81 config STACKTRACE_SUPPORT 82 def_bool y 83 84 config GENERIC_LOCKBREAK 85 def_bool n 86 87 config GENERIC_CALIBRATE_DELAY 88 bool 89 default y 90 91 config HAVE_SETUP_PER_CPU_AREA 92 def_bool y 93 94 config DMI 95 bool 96 default y 97 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK 98 99 config EFI 100 bool 101 select UCS2_STRING 102 default y 103 104 config SCHED_OMIT_FRAME_POINTER 105 bool 106 default y 107 108 config IA64_UNCACHED_ALLOCATOR 109 bool 110 select GENERIC_ALLOCATOR 111 112 config ARCH_USES_PG_UNCACHED 113 def_bool y 114 depends on IA64_UNCACHED_ALLOCATOR 115 116 config AUDIT_ARCH 117 bool 118 default y 119 120 choice 121 prompt "Processor type" 122 default ITANIUM 123 124 config ITANIUM 125 bool "Itanium" 126 help 127 Select your IA-64 processor type. The default is Itanium. 128 This choice is safe for all IA-64 systems, but may not perform 129 optimally on systems with, say, Itanium 2 or newer processors. 130 131 config MCKINLEY 132 bool "Itanium 2" 133 help 134 Select this to configure for an Itanium 2 (McKinley) processor. 135 136 endchoice 137 138 choice 139 prompt "Kernel page size" 140 default IA64_PAGE_SIZE_16KB 141 142 config IA64_PAGE_SIZE_4KB 143 bool "4KB" 144 help 145 This lets you select the page size of the kernel. For best IA-64 146 performance, a page size of 8KB or 16KB is recommended. For best 147 IA-32 compatibility, a page size of 4KB should be selected (the vast 148 majority of IA-32 binaries work perfectly fine with a larger page 149 size). For Itanium 2 or newer systems, a page size of 64KB can also 150 be selected. 151 152 4KB For best IA-32 compatibility 153 8KB For best IA-64 performance 154 16KB For best IA-64 performance 155 64KB Requires Itanium 2 or newer processor. 156 157 If you don't know what to do, choose 16KB. 158 159 config IA64_PAGE_SIZE_8KB 160 bool "8KB" 161 162 config IA64_PAGE_SIZE_16KB 163 bool "16KB" 164 165 config IA64_PAGE_SIZE_64KB 166 depends on !ITANIUM 167 bool "64KB" 168 169 endchoice 170 171 source "kernel/Kconfig.hz" 172 173 config IA64_BRL_EMU 174 bool 175 depends on ITANIUM 176 default y 177 178 # align cache-sensitive data to 128 bytes 179 config IA64_L1_CACHE_SHIFT 180 int 181 default "7" if MCKINLEY 182 default "6" if ITANIUM 183 184 config IA64_SGI_UV 185 bool "SGI-UV support" 186 help 187 Selecting this option will add specific support for running on SGI 188 UV based systems. If you have an SGI UV system or are building a 189 distro kernel, select this option. 190 191 config IA64_HP_SBA_IOMMU 192 bool "HP SBA IOMMU support" 193 select DMA_OPS 194 default y 195 help 196 Say Y here to add support for the SBA IOMMU found on HP zx1 and 197 sx1000 systems. If you're unsure, answer Y. 198 199 config IA64_CYCLONE 200 bool "Cyclone (EXA) Time Source support" 201 help 202 Say Y here to enable support for IBM EXA Cyclone time source. 203 If you're unsure, answer N. 204 205 config FORCE_MAX_ZONEORDER 206 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE 207 range 11 17 if !HUGETLB_PAGE 208 default "17" if HUGETLB_PAGE 209 default "11" 210 211 config SMP 212 bool "Symmetric multi-processing support" 213 help 214 This enables support for systems with more than one CPU. If you have 215 a system with only one CPU, say N. If you have a system with more 216 than one CPU, say Y. 217 218 If you say N here, the kernel will run on single and multiprocessor 219 systems, but will use only one CPU of a multiprocessor system. If 220 you say Y here, the kernel will run on many, but not all, 221 single processor systems. On a single processor system, the kernel 222 will run faster if you say N here. 223 224 See also the SMP-HOWTO available at 225 <http://www.tldp.org/docs.html#howto>. 226 227 If you don't know what to do here, say N. 228 229 config NR_CPUS 230 int "Maximum number of CPUs (2-4096)" 231 range 2 4096 232 depends on SMP 233 default "4096" 234 help 235 You should set this to the number of CPUs in your system, but 236 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but 237 only use 2 CPUs on a >2 CPU system. Setting this to a value larger 238 than 64 will cause the use of a CPU mask array, causing a small 239 performance hit. 240 241 config HOTPLUG_CPU 242 bool "Support for hot-pluggable CPUs" 243 depends on SMP 244 default n 245 help 246 Say Y here to experiment with turning CPUs off and on. CPUs 247 can be controlled through /sys/devices/system/cpu/cpu#. 248 Say N if you want to disable CPU hotplug. 249 250 config SCHED_SMT 251 bool "SMT scheduler support" 252 depends on SMP 253 help 254 Improves the CPU scheduler's decision making when dealing with 255 Intel IA64 chips with MultiThreading at a cost of slightly increased 256 overhead in some places. If unsure say N here. 257 258 config PERMIT_BSP_REMOVE 259 bool "Support removal of Bootstrap Processor" 260 depends on HOTPLUG_CPU 261 default n 262 help 263 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU 264 support. 265 266 config FORCE_CPEI_RETARGET 267 bool "Force assumption that CPEI can be re-targeted" 268 depends on PERMIT_BSP_REMOVE 269 default n 270 help 271 Say Y if you need to force the assumption that CPEI can be re-targeted to 272 any cpu in the system. This hint is available via ACPI 3.0 specifications. 273 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP. 274 This option it useful to enable this feature on older BIOS's as well. 275 You can also enable this by using boot command line option force_cpei=1. 276 277 config ARCH_SELECT_MEMORY_MODEL 278 def_bool y 279 280 config ARCH_FLATMEM_ENABLE 281 def_bool y 282 283 config ARCH_SPARSEMEM_ENABLE 284 def_bool y 285 select SPARSEMEM_VMEMMAP_ENABLE 286 287 config ARCH_SPARSEMEM_DEFAULT 288 def_bool y 289 depends on ARCH_SPARSEMEM_ENABLE 290 291 config NUMA 292 bool "NUMA support" 293 depends on !FLATMEM 294 select SMP 295 help 296 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 297 Access). This option is for configuring high-end multiprocessor 298 server systems. If in doubt, say N. 299 300 config NODES_SHIFT 301 int "Max num nodes shift(3-10)" 302 range 3 10 303 default "10" 304 depends on NUMA 305 help 306 This option specifies the maximum number of nodes in your SSI system. 307 MAX_NUMNODES will be 2^(This value). 308 If in doubt, use the default. 309 310 config HAVE_ARCH_NODEDATA_EXTENSION 311 def_bool y 312 depends on NUMA 313 314 config USE_PERCPU_NUMA_NODE_ID 315 def_bool y 316 depends on NUMA 317 318 config HAVE_MEMORYLESS_NODES 319 def_bool NUMA 320 321 config ARCH_PROC_KCORE_TEXT 322 def_bool y 323 depends on PROC_KCORE 324 325 config IA64_MCA_RECOVERY 326 tristate "MCA recovery from errors other than TLB." 327 328 config IA64_PALINFO 329 tristate "/proc/pal support" 330 help 331 If you say Y here, you are able to get PAL (Processor Abstraction 332 Layer) information in /proc/pal. This contains useful information 333 about the processors in your systems, such as cache and TLB sizes 334 and the PAL firmware version in use. 335 336 To use this option, you have to ensure that the "/proc file system 337 support" (CONFIG_PROC_FS) is enabled, too. 338 339 config IA64_MC_ERR_INJECT 340 tristate "MC error injection support" 341 help 342 Adds support for MC error injection. If enabled, the kernel 343 will provide a sysfs interface for user applications to 344 call MC error injection PAL procedures to inject various errors. 345 This is a useful tool for MCA testing. 346 347 If you're unsure, do not select this option. 348 349 config IA64_ESI 350 bool "ESI (Extensible SAL Interface) support" 351 help 352 If you say Y here, support is built into the kernel to 353 make ESI calls. ESI calls are used to support vendor-specific 354 firmware extensions, such as the ability to inject memory-errors 355 for test-purposes. If you're unsure, say N. 356 357 config IA64_HP_AML_NFW 358 bool "Support ACPI AML calls to native firmware" 359 help 360 This driver installs a global ACPI Operation Region handler for 361 region 0xA1. AML methods can use this OpRegion to call arbitrary 362 native firmware functions. The driver installs the OpRegion 363 handler if there is an HPQ5001 device or if the user supplies 364 the "force" module parameter, e.g., with the "aml_nfw.force" 365 kernel command line option. 366 367 config KEXEC 368 bool "kexec system call" 369 depends on !SMP || HOTPLUG_CPU 370 select KEXEC_CORE 371 help 372 kexec is a system call that implements the ability to shutdown your 373 current kernel, and to start another kernel. It is like a reboot 374 but it is independent of the system firmware. And like a reboot 375 you can start any kernel with it, not just Linux. 376 377 The name comes from the similarity to the exec system call. 378 379 It is an ongoing process to be certain the hardware in a machine 380 is properly shutdown, so do not be surprised if this code does not 381 initially work for you. As of this writing the exact hardware 382 interface is strongly in flux, so no good recommendation can be 383 made. 384 385 config CRASH_DUMP 386 bool "kernel crash dumps" 387 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU) 388 help 389 Generate crash dump after being started by kexec. 390 391 endmenu 392 393 menu "Power management and ACPI options" 394 395 source "kernel/power/Kconfig" 396 397 source "drivers/acpi/Kconfig" 398 399 if PM 400 menu "CPU Frequency scaling" 401 source "drivers/cpufreq/Kconfig" 402 endmenu 403 endif 404 405 endmenu 406 407 config MSPEC 408 tristate "Memory special operations driver" 409 depends on IA64 410 select IA64_UNCACHED_ALLOCATOR 411 help 412 If you have an ia64 and you want to enable memory special 413 operations support (formerly known as fetchop), say Y here, 414 otherwise say N. 415