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_MIGHT_HAVE_PC_PARPORT 12 select ARCH_MIGHT_HAVE_PC_SERIO 13 select ACPI if (!IA64_HP_SIM) 14 select ARCH_SUPPORTS_ACPI if (!IA64_HP_SIM) 15 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI 16 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI 17 select FORCE_PCI if (!IA64_HP_SIM) 18 select PCI_DOMAINS if PCI 19 select PCI_SYSCALL if PCI 20 select HAVE_UNSTABLE_SCHED_CLOCK 21 select HAVE_EXIT_THREAD 22 select HAVE_IDE 23 select HAVE_OPROFILE 24 select HAVE_KPROBES 25 select HAVE_KRETPROBES 26 select HAVE_FTRACE_MCOUNT_RECORD 27 select HAVE_DYNAMIC_FTRACE if (!ITANIUM) 28 select HAVE_FUNCTION_TRACER 29 select TTY 30 select HAVE_ARCH_TRACEHOOK 31 select HAVE_MEMBLOCK_NODE_MAP 32 select HAVE_VIRT_CPU_ACCOUNTING 33 select ARCH_HAS_DMA_COHERENT_TO_PFN if SWIOTLB 34 select ARCH_HAS_SYNC_DMA_FOR_CPU if SWIOTLB 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 SYSCTL_ARCH_UNALIGN_NO_WARN 49 select HAVE_MOD_ARCH_SPECIFIC 50 select MODULES_USE_ELF_RELA 51 select ARCH_USE_CMPXCHG_LOCKREF 52 select HAVE_ARCH_AUDITSYSCALL 53 select NEED_DMA_MAP_STATE 54 select NEED_SG_DMA_LENGTH 55 default y 56 help 57 The Itanium Processor Family is Intel's 64-bit successor to 58 the 32-bit X86 line. The IA-64 Linux project has a home 59 page at <http://www.linuxia64.org/> and a mailing list at 60 <linux-ia64@vger.kernel.org>. 61 62config 64BIT 63 bool 64 select ATA_NONSTANDARD if ATA 65 default y 66 67config ZONE_DMA32 68 def_bool y 69 70config QUICKLIST 71 bool 72 default y 73 74config MMU 75 bool 76 default y 77 78config STACKTRACE_SUPPORT 79 def_bool y 80 81config GENERIC_LOCKBREAK 82 def_bool n 83 84config HUGETLB_PAGE_SIZE_VARIABLE 85 bool 86 depends on HUGETLB_PAGE 87 default y 88 89config GENERIC_CALIBRATE_DELAY 90 bool 91 default y 92 93config HAVE_SETUP_PER_CPU_AREA 94 def_bool y 95 96config DMI 97 bool 98 default y 99 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK 100 101config EFI 102 bool 103 select UCS2_STRING 104 default y 105 106config SCHED_OMIT_FRAME_POINTER 107 bool 108 default y 109 110config IA64_UNCACHED_ALLOCATOR 111 bool 112 select GENERIC_ALLOCATOR 113 114config ARCH_USES_PG_UNCACHED 115 def_bool y 116 depends on IA64_UNCACHED_ALLOCATOR 117 118config AUDIT_ARCH 119 bool 120 default y 121 122choice 123 prompt "System type" 124 default IA64_GENERIC 125 126config IA64_GENERIC 127 bool "generic" 128 select NUMA 129 select ACPI_NUMA 130 select SWIOTLB 131 select PCI_MSI 132 help 133 This selects the system type of your hardware. A "generic" kernel 134 will run on any supported IA-64 system. However, if you configure 135 a kernel for your specific system, it will be faster and smaller. 136 137 generic For any supported IA-64 system 138 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems 139 DIG+Intel+IOMMU For DIG systems with Intel IOMMU 140 HP-zx1/sx1000 For HP systems 141 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices. 142 SGI-UV For SGI UV systems 143 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/> 144 145 If you don't know what to do, choose "generic". 146 147config IA64_DIG 148 bool "DIG-compliant" 149 select SWIOTLB 150 151config IA64_DIG_VTD 152 bool "DIG+Intel+IOMMU" 153 select INTEL_IOMMU 154 select PCI_MSI 155 156config IA64_HP_ZX1 157 bool "HP-zx1/sx1000" 158 help 159 Build a kernel that runs on HP zx1 and sx1000 systems. This adds 160 support for the HP I/O MMU. 161 162config IA64_HP_ZX1_SWIOTLB 163 bool "HP-zx1/sx1000 with software I/O TLB" 164 select SWIOTLB 165 help 166 Build a kernel that runs on HP zx1 and sx1000 systems even when they 167 have broken PCI devices which cannot DMA to full 32 bits. Apart 168 from support for the HP I/O MMU, this includes support for the software 169 I/O TLB, which allows supporting the broken devices at the expense of 170 wasting some kernel memory (about 2MB by default). 171 172config IA64_SGI_UV 173 bool "SGI-UV" 174 select NUMA 175 select ACPI_NUMA 176 select SWIOTLB 177 help 178 Selecting this option will optimize the kernel for use on UV based 179 systems, but the resulting kernel binary will not run on other 180 types of ia64 systems. If you have an SGI UV system, it's safe 181 to select this option. If in doubt, select ia64 generic support 182 instead. 183 184config IA64_HP_SIM 185 bool "Ski-simulator" 186 select SWIOTLB 187 depends on !PM 188 189endchoice 190 191choice 192 prompt "Processor type" 193 default ITANIUM 194 195config ITANIUM 196 bool "Itanium" 197 help 198 Select your IA-64 processor type. The default is Itanium. 199 This choice is safe for all IA-64 systems, but may not perform 200 optimally on systems with, say, Itanium 2 or newer processors. 201 202config MCKINLEY 203 bool "Itanium 2" 204 help 205 Select this to configure for an Itanium 2 (McKinley) processor. 206 207endchoice 208 209choice 210 prompt "Kernel page size" 211 default IA64_PAGE_SIZE_16KB 212 213config IA64_PAGE_SIZE_4KB 214 bool "4KB" 215 help 216 This lets you select the page size of the kernel. For best IA-64 217 performance, a page size of 8KB or 16KB is recommended. For best 218 IA-32 compatibility, a page size of 4KB should be selected (the vast 219 majority of IA-32 binaries work perfectly fine with a larger page 220 size). For Itanium 2 or newer systems, a page size of 64KB can also 221 be selected. 222 223 4KB For best IA-32 compatibility 224 8KB For best IA-64 performance 225 16KB For best IA-64 performance 226 64KB Requires Itanium 2 or newer processor. 227 228 If you don't know what to do, choose 16KB. 229 230config IA64_PAGE_SIZE_8KB 231 bool "8KB" 232 233config IA64_PAGE_SIZE_16KB 234 bool "16KB" 235 236config IA64_PAGE_SIZE_64KB 237 depends on !ITANIUM 238 bool "64KB" 239 240endchoice 241 242if IA64_HP_SIM 243config HZ 244 default 32 245endif 246 247if !IA64_HP_SIM 248source "kernel/Kconfig.hz" 249endif 250 251config IA64_BRL_EMU 252 bool 253 depends on ITANIUM 254 default y 255 256# align cache-sensitive data to 128 bytes 257config IA64_L1_CACHE_SHIFT 258 int 259 default "7" if MCKINLEY 260 default "6" if ITANIUM 261 262config IA64_CYCLONE 263 bool "Cyclone (EXA) Time Source support" 264 help 265 Say Y here to enable support for IBM EXA Cyclone time source. 266 If you're unsure, answer N. 267 268config IOSAPIC 269 bool 270 depends on !IA64_HP_SIM 271 default y 272 273config FORCE_MAX_ZONEORDER 274 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE 275 range 11 17 if !HUGETLB_PAGE 276 default "17" if HUGETLB_PAGE 277 default "11" 278 279config SMP 280 bool "Symmetric multi-processing support" 281 help 282 This enables support for systems with more than one CPU. If you have 283 a system with only one CPU, say N. If you have a system with more 284 than one CPU, say Y. 285 286 If you say N here, the kernel will run on single and multiprocessor 287 systems, but will use only one CPU of a multiprocessor system. If 288 you say Y here, the kernel will run on many, but not all, 289 single processor systems. On a single processor system, the kernel 290 will run faster if you say N here. 291 292 See also the SMP-HOWTO available at 293 <http://www.tldp.org/docs.html#howto>. 294 295 If you don't know what to do here, say N. 296 297config NR_CPUS 298 int "Maximum number of CPUs (2-4096)" 299 range 2 4096 300 depends on SMP 301 default "4096" 302 help 303 You should set this to the number of CPUs in your system, but 304 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but 305 only use 2 CPUs on a >2 CPU system. Setting this to a value larger 306 than 64 will cause the use of a CPU mask array, causing a small 307 performance hit. 308 309config HOTPLUG_CPU 310 bool "Support for hot-pluggable CPUs" 311 depends on SMP 312 default n 313 ---help--- 314 Say Y here to experiment with turning CPUs off and on. CPUs 315 can be controlled through /sys/devices/system/cpu/cpu#. 316 Say N if you want to disable CPU hotplug. 317 318config ARCH_ENABLE_MEMORY_HOTPLUG 319 def_bool y 320 321config ARCH_ENABLE_MEMORY_HOTREMOVE 322 def_bool y 323 324config SCHED_SMT 325 bool "SMT scheduler support" 326 depends on SMP 327 help 328 Improves the CPU scheduler's decision making when dealing with 329 Intel IA64 chips with MultiThreading at a cost of slightly increased 330 overhead in some places. If unsure say N here. 331 332config PERMIT_BSP_REMOVE 333 bool "Support removal of Bootstrap Processor" 334 depends on HOTPLUG_CPU 335 default n 336 ---help--- 337 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU 338 support. 339 340config FORCE_CPEI_RETARGET 341 bool "Force assumption that CPEI can be re-targeted" 342 depends on PERMIT_BSP_REMOVE 343 default n 344 ---help--- 345 Say Y if you need to force the assumption that CPEI can be re-targeted to 346 any cpu in the system. This hint is available via ACPI 3.0 specifications. 347 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP. 348 This option it useful to enable this feature on older BIOS's as well. 349 You can also enable this by using boot command line option force_cpei=1. 350 351config ARCH_SELECT_MEMORY_MODEL 352 def_bool y 353 354config ARCH_DISCONTIGMEM_ENABLE 355 def_bool y 356 help 357 Say Y to support efficient handling of discontiguous physical memory, 358 for architectures which are either NUMA (Non-Uniform Memory Access) 359 or have huge holes in the physical address space for other reasons. 360 See <file:Documentation/vm/numa.rst> for more. 361 362config ARCH_FLATMEM_ENABLE 363 def_bool y 364 365config ARCH_SPARSEMEM_ENABLE 366 def_bool y 367 depends on ARCH_DISCONTIGMEM_ENABLE 368 select SPARSEMEM_VMEMMAP_ENABLE 369 370config ARCH_DISCONTIGMEM_DEFAULT 371 def_bool y if (IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB) 372 depends on ARCH_DISCONTIGMEM_ENABLE 373 374config NUMA 375 bool "NUMA support" 376 depends on !IA64_HP_SIM && !FLATMEM 377 select ACPI_NUMA if ACPI 378 help 379 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 380 Access). This option is for configuring high-end multiprocessor 381 server systems. If in doubt, say N. 382 383config NODES_SHIFT 384 int "Max num nodes shift(3-10)" 385 range 3 10 386 default "10" 387 depends on NEED_MULTIPLE_NODES 388 help 389 This option specifies the maximum number of nodes in your SSI system. 390 MAX_NUMNODES will be 2^(This value). 391 If in doubt, use the default. 392 393# VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent. 394# VIRTUAL_MEM_MAP has been retained for historical reasons. 395config VIRTUAL_MEM_MAP 396 bool "Virtual mem map" 397 depends on !SPARSEMEM 398 default y if !IA64_HP_SIM 399 help 400 Say Y to compile the kernel with support for a virtual mem map. 401 This code also only takes effect if a memory hole of greater than 402 1 Gb is found during boot. You must turn this option on if you 403 require the DISCONTIGMEM option for your machine. If you are 404 unsure, say Y. 405 406config HOLES_IN_ZONE 407 bool 408 default y if VIRTUAL_MEM_MAP 409 410config HAVE_ARCH_EARLY_PFN_TO_NID 411 def_bool NUMA && SPARSEMEM 412 413config HAVE_ARCH_NODEDATA_EXTENSION 414 def_bool y 415 depends on NUMA 416 417config USE_PERCPU_NUMA_NODE_ID 418 def_bool y 419 depends on NUMA 420 421config HAVE_MEMORYLESS_NODES 422 def_bool NUMA 423 424config ARCH_PROC_KCORE_TEXT 425 def_bool y 426 depends on PROC_KCORE 427 428config IA64_MCA_RECOVERY 429 tristate "MCA recovery from errors other than TLB." 430 431config PERFMON 432 bool "Performance monitor support" 433 depends on BROKEN 434 help 435 Selects whether support for the IA-64 performance monitor hardware 436 is included in the kernel. This makes some kernel data-structures a 437 little bigger and slows down execution a bit, but it is generally 438 a good idea to turn this on. If you're unsure, say Y. 439 440config IA64_PALINFO 441 tristate "/proc/pal support" 442 help 443 If you say Y here, you are able to get PAL (Processor Abstraction 444 Layer) information in /proc/pal. This contains useful information 445 about the processors in your systems, such as cache and TLB sizes 446 and the PAL firmware version in use. 447 448 To use this option, you have to ensure that the "/proc file system 449 support" (CONFIG_PROC_FS) is enabled, too. 450 451config IA64_MC_ERR_INJECT 452 tristate "MC error injection support" 453 help 454 Adds support for MC error injection. If enabled, the kernel 455 will provide a sysfs interface for user applications to 456 call MC error injection PAL procedures to inject various errors. 457 This is a useful tool for MCA testing. 458 459 If you're unsure, do not select this option. 460 461config IA64_ESI 462 bool "ESI (Extensible SAL Interface) support" 463 help 464 If you say Y here, support is built into the kernel to 465 make ESI calls. ESI calls are used to support vendor-specific 466 firmware extensions, such as the ability to inject memory-errors 467 for test-purposes. If you're unsure, say N. 468 469config IA64_HP_AML_NFW 470 bool "Support ACPI AML calls to native firmware" 471 help 472 This driver installs a global ACPI Operation Region handler for 473 region 0xA1. AML methods can use this OpRegion to call arbitrary 474 native firmware functions. The driver installs the OpRegion 475 handler if there is an HPQ5001 device or if the user supplies 476 the "force" module parameter, e.g., with the "aml_nfw.force" 477 kernel command line option. 478 479config KEXEC 480 bool "kexec system call" 481 depends on !IA64_HP_SIM && (!SMP || HOTPLUG_CPU) 482 select KEXEC_CORE 483 help 484 kexec is a system call that implements the ability to shutdown your 485 current kernel, and to start another kernel. It is like a reboot 486 but it is independent of the system firmware. And like a reboot 487 you can start any kernel with it, not just Linux. 488 489 The name comes from the similarity to the exec system call. 490 491 It is an ongoing process to be certain the hardware in a machine 492 is properly shutdown, so do not be surprised if this code does not 493 initially work for you. As of this writing the exact hardware 494 interface is strongly in flux, so no good recommendation can be 495 made. 496 497config CRASH_DUMP 498 bool "kernel crash dumps" 499 depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU) 500 help 501 Generate crash dump after being started by kexec. 502 503source "drivers/firmware/Kconfig" 504 505endmenu 506 507menu "Power management and ACPI options" 508 509source "kernel/power/Kconfig" 510 511source "drivers/acpi/Kconfig" 512 513if PM 514menu "CPU Frequency scaling" 515source "drivers/cpufreq/Kconfig" 516endmenu 517endif 518 519endmenu 520 521source "arch/ia64/hp/sim/Kconfig" 522 523config MSPEC 524 tristate "Memory special operations driver" 525 depends on IA64 526 select IA64_UNCACHED_ALLOCATOR 527 help 528 If you have an ia64 and you want to enable memory special 529 operations support (formerly known as fetchop), say Y here, 530 otherwise say N. 531