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