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