1# SPDX-License-Identifier: GPL-2.0 2config 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 7menu "Processor type and features" 8 9config IA64 10 bool 11 select ARCH_HAS_DMA_MARK_CLEAN 12 select ARCH_MIGHT_HAVE_PC_PARPORT 13 select ARCH_MIGHT_HAVE_PC_SERIO 14 select ACPI 15 select ACPI_NUMA if NUMA 16 select ARCH_SUPPORTS_ACPI 17 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI 18 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI 19 select FORCE_PCI 20 select PCI_DOMAINS if PCI 21 select PCI_MSI 22 select PCI_SYSCALL if PCI 23 select HAVE_ASM_MODVERSIONS 24 select HAVE_UNSTABLE_SCHED_CLOCK 25 select HAVE_EXIT_THREAD 26 select HAVE_IDE 27 select HAVE_OPROFILE 28 select HAVE_KPROBES 29 select HAVE_KRETPROBES 30 select HAVE_FTRACE_MCOUNT_RECORD 31 select HAVE_DYNAMIC_FTRACE if (!ITANIUM) 32 select HAVE_FUNCTION_TRACER 33 select TTY 34 select HAVE_ARCH_TRACEHOOK 35 select HAVE_VIRT_CPU_ACCOUNTING 36 select VIRT_TO_BUS 37 select GENERIC_IRQ_PROBE 38 select GENERIC_PENDING_IRQ if SMP 39 select GENERIC_IRQ_SHOW 40 select GENERIC_IRQ_LEGACY 41 select ARCH_HAVE_NMI_SAFE_CMPXCHG 42 select GENERIC_IOMAP 43 select GENERIC_SMP_IDLE_THREAD 44 select ARCH_TASK_STRUCT_ON_STACK 45 select ARCH_TASK_STRUCT_ALLOCATOR 46 select ARCH_THREAD_STACK_ALLOCATOR 47 select ARCH_CLOCKSOURCE_DATA 48 select GENERIC_TIME_VSYSCALL 49 select SWIOTLB 50 select SYSCTL_ARCH_UNALIGN_NO_WARN 51 select HAVE_MOD_ARCH_SPECIFIC 52 select MODULES_USE_ELF_RELA 53 select ARCH_USE_CMPXCHG_LOCKREF 54 select HAVE_ARCH_AUDITSYSCALL 55 select NEED_DMA_MAP_STATE 56 select NEED_SG_DMA_LENGTH 57 select NUMA if !FLATMEM 58 default y 59 help 60 The Itanium Processor Family is Intel's 64-bit successor to 61 the 32-bit X86 line. The IA-64 Linux project has a home 62 page at <http://www.linuxia64.org/> and a mailing list at 63 <linux-ia64@vger.kernel.org>. 64 65config 64BIT 66 bool 67 select ATA_NONSTANDARD if ATA 68 default y 69 70config ZONE_DMA32 71 def_bool y 72 73config MMU 74 bool 75 default y 76 77config STACKTRACE_SUPPORT 78 def_bool y 79 80config GENERIC_LOCKBREAK 81 def_bool n 82 83config HUGETLB_PAGE_SIZE_VARIABLE 84 bool 85 depends on HUGETLB_PAGE 86 default y 87 88config GENERIC_CALIBRATE_DELAY 89 bool 90 default y 91 92config HAVE_SETUP_PER_CPU_AREA 93 def_bool y 94 95config DMI 96 bool 97 default y 98 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK 99 100config EFI 101 bool 102 select UCS2_STRING 103 default y 104 105config SCHED_OMIT_FRAME_POINTER 106 bool 107 default y 108 109config IA64_UNCACHED_ALLOCATOR 110 bool 111 select GENERIC_ALLOCATOR 112 113config ARCH_USES_PG_UNCACHED 114 def_bool y 115 depends on IA64_UNCACHED_ALLOCATOR 116 117config AUDIT_ARCH 118 bool 119 default y 120 121choice 122 prompt "Processor type" 123 default ITANIUM 124 125config ITANIUM 126 bool "Itanium" 127 help 128 Select your IA-64 processor type. The default is Itanium. 129 This choice is safe for all IA-64 systems, but may not perform 130 optimally on systems with, say, Itanium 2 or newer processors. 131 132config MCKINLEY 133 bool "Itanium 2" 134 help 135 Select this to configure for an Itanium 2 (McKinley) processor. 136 137endchoice 138 139choice 140 prompt "Kernel page size" 141 default IA64_PAGE_SIZE_16KB 142 143config IA64_PAGE_SIZE_4KB 144 bool "4KB" 145 help 146 This lets you select the page size of the kernel. For best IA-64 147 performance, a page size of 8KB or 16KB is recommended. For best 148 IA-32 compatibility, a page size of 4KB should be selected (the vast 149 majority of IA-32 binaries work perfectly fine with a larger page 150 size). For Itanium 2 or newer systems, a page size of 64KB can also 151 be selected. 152 153 4KB For best IA-32 compatibility 154 8KB For best IA-64 performance 155 16KB For best IA-64 performance 156 64KB Requires Itanium 2 or newer processor. 157 158 If you don't know what to do, choose 16KB. 159 160config IA64_PAGE_SIZE_8KB 161 bool "8KB" 162 163config IA64_PAGE_SIZE_16KB 164 bool "16KB" 165 166config IA64_PAGE_SIZE_64KB 167 depends on !ITANIUM 168 bool "64KB" 169 170endchoice 171 172source "kernel/Kconfig.hz" 173 174config IA64_BRL_EMU 175 bool 176 depends on ITANIUM 177 default y 178 179# align cache-sensitive data to 128 bytes 180config IA64_L1_CACHE_SHIFT 181 int 182 default "7" if MCKINLEY 183 default "6" if ITANIUM 184 185config IA64_SGI_UV 186 bool "SGI-UV support" 187 help 188 Selecting this option will add specific support for running on SGI 189 UV based systems. If you have an SGI UV system or are building a 190 distro kernel, select this option. 191 192config IA64_HP_SBA_IOMMU 193 bool "HP SBA IOMMU support" 194 select DMA_OPS 195 default y 196 help 197 Say Y here to add support for the SBA IOMMU found on HP zx1 and 198 sx1000 systems. If you're unsure, answer Y. 199 200config IA64_CYCLONE 201 bool "Cyclone (EXA) Time Source support" 202 help 203 Say Y here to enable support for IBM EXA Cyclone time source. 204 If you're unsure, answer N. 205 206config FORCE_MAX_ZONEORDER 207 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE 208 range 11 17 if !HUGETLB_PAGE 209 default "17" if HUGETLB_PAGE 210 default "11" 211 212config SMP 213 bool "Symmetric multi-processing support" 214 help 215 This enables support for systems with more than one CPU. If you have 216 a system with only one CPU, say N. If you have a system with more 217 than one CPU, say Y. 218 219 If you say N here, the kernel will run on single and multiprocessor 220 systems, but will use only one CPU of a multiprocessor system. If 221 you say Y here, the kernel will run on many, but not all, 222 single processor systems. On a single processor system, the kernel 223 will run faster if you say N here. 224 225 See also the SMP-HOWTO available at 226 <http://www.tldp.org/docs.html#howto>. 227 228 If you don't know what to do here, say N. 229 230config NR_CPUS 231 int "Maximum number of CPUs (2-4096)" 232 range 2 4096 233 depends on SMP 234 default "4096" 235 help 236 You should set this to the number of CPUs in your system, but 237 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but 238 only use 2 CPUs on a >2 CPU system. Setting this to a value larger 239 than 64 will cause the use of a CPU mask array, causing a small 240 performance hit. 241 242config HOTPLUG_CPU 243 bool "Support for hot-pluggable CPUs" 244 depends on SMP 245 default n 246 help 247 Say Y here to experiment with turning CPUs off and on. CPUs 248 can be controlled through /sys/devices/system/cpu/cpu#. 249 Say N if you want to disable CPU hotplug. 250 251config ARCH_ENABLE_MEMORY_HOTPLUG 252 def_bool y 253 254config ARCH_ENABLE_MEMORY_HOTREMOVE 255 def_bool y 256 257config SCHED_SMT 258 bool "SMT scheduler support" 259 depends on SMP 260 help 261 Improves the CPU scheduler's decision making when dealing with 262 Intel IA64 chips with MultiThreading at a cost of slightly increased 263 overhead in some places. If unsure say N here. 264 265config PERMIT_BSP_REMOVE 266 bool "Support removal of Bootstrap Processor" 267 depends on HOTPLUG_CPU 268 default n 269 help 270 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU 271 support. 272 273config FORCE_CPEI_RETARGET 274 bool "Force assumption that CPEI can be re-targeted" 275 depends on PERMIT_BSP_REMOVE 276 default n 277 help 278 Say Y if you need to force the assumption that CPEI can be re-targeted to 279 any cpu in the system. This hint is available via ACPI 3.0 specifications. 280 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP. 281 This option it useful to enable this feature on older BIOS's as well. 282 You can also enable this by using boot command line option force_cpei=1. 283 284config ARCH_SELECT_MEMORY_MODEL 285 def_bool y 286 287config ARCH_DISCONTIGMEM_ENABLE 288 def_bool y 289 help 290 Say Y to support efficient handling of discontiguous physical memory, 291 for architectures which are either NUMA (Non-Uniform Memory Access) 292 or have huge holes in the physical address space for other reasons. 293 See <file:Documentation/vm/numa.rst> for more. 294 295config ARCH_FLATMEM_ENABLE 296 def_bool y 297 298config ARCH_SPARSEMEM_ENABLE 299 def_bool y 300 depends on ARCH_DISCONTIGMEM_ENABLE 301 select SPARSEMEM_VMEMMAP_ENABLE 302 303config ARCH_DISCONTIGMEM_DEFAULT 304 def_bool y 305 depends on ARCH_DISCONTIGMEM_ENABLE 306 307config NUMA 308 bool "NUMA support" 309 depends on !FLATMEM 310 select SMP 311 help 312 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 313 Access). This option is for configuring high-end multiprocessor 314 server systems. If in doubt, say N. 315 316config NODES_SHIFT 317 int "Max num nodes shift(3-10)" 318 range 3 10 319 default "10" 320 depends on NEED_MULTIPLE_NODES 321 help 322 This option specifies the maximum number of nodes in your SSI system. 323 MAX_NUMNODES will be 2^(This value). 324 If in doubt, use the default. 325 326# VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent. 327# VIRTUAL_MEM_MAP has been retained for historical reasons. 328config VIRTUAL_MEM_MAP 329 bool "Virtual mem map" 330 depends on !SPARSEMEM 331 default y 332 help 333 Say Y to compile the kernel with support for a virtual mem map. 334 This code also only takes effect if a memory hole of greater than 335 1 Gb is found during boot. You must turn this option on if you 336 require the DISCONTIGMEM option for your machine. If you are 337 unsure, say Y. 338 339config HOLES_IN_ZONE 340 bool 341 default y if VIRTUAL_MEM_MAP 342 343config HAVE_ARCH_EARLY_PFN_TO_NID 344 def_bool NUMA && SPARSEMEM 345 346config HAVE_ARCH_NODEDATA_EXTENSION 347 def_bool y 348 depends on NUMA 349 350config USE_PERCPU_NUMA_NODE_ID 351 def_bool y 352 depends on NUMA 353 354config HAVE_MEMORYLESS_NODES 355 def_bool NUMA 356 357config ARCH_PROC_KCORE_TEXT 358 def_bool y 359 depends on PROC_KCORE 360 361config IA64_MCA_RECOVERY 362 tristate "MCA recovery from errors other than TLB." 363 364config PERFMON 365 bool "Performance monitor support" 366 depends on BROKEN 367 help 368 Selects whether support for the IA-64 performance monitor hardware 369 is included in the kernel. This makes some kernel data-structures a 370 little bigger and slows down execution a bit, but it is generally 371 a good idea to turn this on. If you're unsure, say Y. 372 373config IA64_PALINFO 374 tristate "/proc/pal support" 375 help 376 If you say Y here, you are able to get PAL (Processor Abstraction 377 Layer) information in /proc/pal. This contains useful information 378 about the processors in your systems, such as cache and TLB sizes 379 and the PAL firmware version in use. 380 381 To use this option, you have to ensure that the "/proc file system 382 support" (CONFIG_PROC_FS) is enabled, too. 383 384config IA64_MC_ERR_INJECT 385 tristate "MC error injection support" 386 help 387 Adds support for MC error injection. If enabled, the kernel 388 will provide a sysfs interface for user applications to 389 call MC error injection PAL procedures to inject various errors. 390 This is a useful tool for MCA testing. 391 392 If you're unsure, do not select this option. 393 394config IA64_ESI 395 bool "ESI (Extensible SAL Interface) support" 396 help 397 If you say Y here, support is built into the kernel to 398 make ESI calls. ESI calls are used to support vendor-specific 399 firmware extensions, such as the ability to inject memory-errors 400 for test-purposes. If you're unsure, say N. 401 402config IA64_HP_AML_NFW 403 bool "Support ACPI AML calls to native firmware" 404 help 405 This driver installs a global ACPI Operation Region handler for 406 region 0xA1. AML methods can use this OpRegion to call arbitrary 407 native firmware functions. The driver installs the OpRegion 408 handler if there is an HPQ5001 device or if the user supplies 409 the "force" module parameter, e.g., with the "aml_nfw.force" 410 kernel command line option. 411 412config KEXEC 413 bool "kexec system call" 414 depends on !SMP || HOTPLUG_CPU 415 select KEXEC_CORE 416 help 417 kexec is a system call that implements the ability to shutdown your 418 current kernel, and to start another kernel. It is like a reboot 419 but it is independent of the system firmware. And like a reboot 420 you can start any kernel with it, not just Linux. 421 422 The name comes from the similarity to the exec system call. 423 424 It is an ongoing process to be certain the hardware in a machine 425 is properly shutdown, so do not be surprised if this code does not 426 initially work for you. As of this writing the exact hardware 427 interface is strongly in flux, so no good recommendation can be 428 made. 429 430config CRASH_DUMP 431 bool "kernel crash dumps" 432 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU) 433 help 434 Generate crash dump after being started by kexec. 435 436source "drivers/firmware/Kconfig" 437 438endmenu 439 440menu "Power management and ACPI options" 441 442source "kernel/power/Kconfig" 443 444source "drivers/acpi/Kconfig" 445 446if PM 447menu "CPU Frequency scaling" 448source "drivers/cpufreq/Kconfig" 449endmenu 450endif 451 452endmenu 453 454config MSPEC 455 tristate "Memory special operations driver" 456 depends on IA64 457 select IA64_UNCACHED_ALLOCATOR 458 help 459 If you have an ia64 and you want to enable memory special 460 operations support (formerly known as fetchop), say Y here, 461 otherwise say N. 462