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