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_BINFMT_ELF_EXTRA_PHDRS 12 select ARCH_HAS_CPU_FINALIZE_INIT 13 select ARCH_HAS_DMA_MARK_CLEAN 14 select ARCH_HAS_STRNCPY_FROM_USER 15 select ARCH_HAS_STRNLEN_USER 16 select ARCH_MIGHT_HAVE_PC_PARPORT 17 select ARCH_MIGHT_HAVE_PC_SERIO 18 select ACPI 19 select ACPI_NUMA if NUMA 20 select ARCH_ENABLE_MEMORY_HOTPLUG 21 select ARCH_ENABLE_MEMORY_HOTREMOVE 22 select ARCH_SUPPORTS_ACPI 23 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI 24 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI 25 select FORCE_PCI 26 select PCI_DOMAINS if PCI 27 select PCI_MSI 28 select PCI_SYSCALL if PCI 29 select HAS_IOPORT 30 select HAVE_ASM_MODVERSIONS 31 select HAVE_UNSTABLE_SCHED_CLOCK 32 select HAVE_EXIT_THREAD 33 select HAVE_KPROBES 34 select HAVE_KRETPROBES 35 select HAVE_FTRACE_MCOUNT_RECORD 36 select HAVE_DYNAMIC_FTRACE if (!ITANIUM) 37 select HAVE_FUNCTION_TRACER 38 select HAVE_SETUP_PER_CPU_AREA 39 select TTY 40 select HAVE_ARCH_TRACEHOOK 41 select HAVE_FUNCTION_DESCRIPTORS 42 select HAVE_VIRT_CPU_ACCOUNTING 43 select HUGETLB_PAGE_SIZE_VARIABLE if HUGETLB_PAGE 44 select GENERIC_IRQ_PROBE 45 select GENERIC_PENDING_IRQ if SMP 46 select GENERIC_IRQ_SHOW 47 select GENERIC_IRQ_LEGACY 48 select ARCH_HAVE_NMI_SAFE_CMPXCHG 49 select GENERIC_IOMAP 50 select GENERIC_SMP_IDLE_THREAD 51 select ARCH_TASK_STRUCT_ON_STACK 52 select ARCH_TASK_STRUCT_ALLOCATOR 53 select ARCH_THREAD_STACK_ALLOCATOR 54 select ARCH_CLOCKSOURCE_DATA 55 select GENERIC_TIME_VSYSCALL 56 select LEGACY_TIMER_TICK 57 select SWIOTLB 58 select SYSCTL_ARCH_UNALIGN_NO_WARN 59 select HAVE_MOD_ARCH_SPECIFIC 60 select MODULES_USE_ELF_RELA 61 select ARCH_USE_CMPXCHG_LOCKREF 62 select HAVE_ARCH_AUDITSYSCALL 63 select NEED_DMA_MAP_STATE 64 select NEED_SG_DMA_LENGTH 65 select NUMA if !FLATMEM 66 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI 67 select ZONE_DMA32 68 select FUNCTION_ALIGNMENT_32B 69 default y 70 help 71 The Itanium Processor Family is Intel's 64-bit successor to 72 the 32-bit X86 line. The IA-64 Linux project has a home 73 page at <http://www.linuxia64.org/> and a mailing list at 74 <linux-ia64@vger.kernel.org>. 75 76config 64BIT 77 bool 78 select ATA_NONSTANDARD if ATA 79 default y 80 81config MMU 82 bool 83 default y 84 85config STACKTRACE_SUPPORT 86 def_bool y 87 88config GENERIC_LOCKBREAK 89 def_bool n 90 91config GENERIC_CALIBRATE_DELAY 92 bool 93 default 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 ARCH_FORCE_MAX_ORDER 207 int 208 default "16" if HUGETLB_PAGE 209 default "10" 210 211config SMP 212 bool "Symmetric multi-processing support" 213 help 214 This enables support for systems with more than one CPU. If you have 215 a system with only one CPU, say N. If you have a system with more 216 than one CPU, say Y. 217 218 If you say N here, the kernel will run on single and multiprocessor 219 systems, but will use only one CPU of a multiprocessor system. If 220 you say Y here, the kernel will run on many, but not all, 221 single processor systems. On a single processor system, the kernel 222 will run faster if you say N here. 223 224 See also the SMP-HOWTO available at 225 <http://www.tldp.org/docs.html#howto>. 226 227 If you don't know what to do here, say N. 228 229config NR_CPUS 230 int "Maximum number of CPUs (2-4096)" 231 range 2 4096 232 depends on SMP 233 default "4096" 234 help 235 You should set this to the number of CPUs in your system, but 236 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but 237 only use 2 CPUs on a >2 CPU system. Setting this to a value larger 238 than 64 will cause the use of a CPU mask array, causing a small 239 performance hit. 240 241config HOTPLUG_CPU 242 bool "Support for hot-pluggable CPUs" 243 depends on SMP 244 default n 245 help 246 Say Y here to experiment with turning CPUs off and on. CPUs 247 can be controlled through /sys/devices/system/cpu/cpu#. 248 Say N if you want to disable CPU hotplug. 249 250config SCHED_SMT 251 bool "SMT scheduler support" 252 depends on SMP 253 help 254 Improves the CPU scheduler's decision making when dealing with 255 Intel IA64 chips with MultiThreading at a cost of slightly increased 256 overhead in some places. If unsure say N here. 257 258config PERMIT_BSP_REMOVE 259 bool "Support removal of Bootstrap Processor" 260 depends on HOTPLUG_CPU 261 default n 262 help 263 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU 264 support. 265 266config FORCE_CPEI_RETARGET 267 bool "Force assumption that CPEI can be re-targeted" 268 depends on PERMIT_BSP_REMOVE 269 default n 270 help 271 Say Y if you need to force the assumption that CPEI can be re-targeted to 272 any cpu in the system. This hint is available via ACPI 3.0 specifications. 273 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP. 274 This option it useful to enable this feature on older BIOS's as well. 275 You can also enable this by using boot command line option force_cpei=1. 276 277config ARCH_SELECT_MEMORY_MODEL 278 def_bool y 279 280config ARCH_FLATMEM_ENABLE 281 def_bool y 282 283config ARCH_SPARSEMEM_ENABLE 284 def_bool y 285 select SPARSEMEM_VMEMMAP_ENABLE 286 287config ARCH_SPARSEMEM_DEFAULT 288 def_bool y 289 depends on ARCH_SPARSEMEM_ENABLE 290 291config NUMA 292 bool "NUMA support" 293 depends on !FLATMEM 294 select SMP 295 select USE_PERCPU_NUMA_NODE_ID 296 help 297 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 298 Access). This option is for configuring high-end multiprocessor 299 server systems. If in doubt, say N. 300 301config NODES_SHIFT 302 int "Max num nodes shift(3-10)" 303 range 3 10 304 default "10" 305 depends on NUMA 306 help 307 This option specifies the maximum number of nodes in your SSI system. 308 MAX_NUMNODES will be 2^(This value). 309 If in doubt, use the default. 310 311config HAVE_ARCH_NODEDATA_EXTENSION 312 def_bool y 313 depends on NUMA 314 315config HAVE_MEMORYLESS_NODES 316 def_bool NUMA 317 318config ARCH_PROC_KCORE_TEXT 319 def_bool y 320 depends on PROC_KCORE 321 322config IA64_MCA_RECOVERY 323 bool "MCA recovery from errors other than TLB." 324 325config IA64_PALINFO 326 tristate "/proc/pal support" 327 help 328 If you say Y here, you are able to get PAL (Processor Abstraction 329 Layer) information in /proc/pal. This contains useful information 330 about the processors in your systems, such as cache and TLB sizes 331 and the PAL firmware version in use. 332 333 To use this option, you have to ensure that the "/proc file system 334 support" (CONFIG_PROC_FS) is enabled, too. 335 336config IA64_MC_ERR_INJECT 337 tristate "MC error injection support" 338 help 339 Adds support for MC error injection. If enabled, the kernel 340 will provide a sysfs interface for user applications to 341 call MC error injection PAL procedures to inject various errors. 342 This is a useful tool for MCA testing. 343 344 If you're unsure, do not select this option. 345 346config IA64_ESI 347 bool "ESI (Extensible SAL Interface) support" 348 help 349 If you say Y here, support is built into the kernel to 350 make ESI calls. ESI calls are used to support vendor-specific 351 firmware extensions, such as the ability to inject memory-errors 352 for test-purposes. If you're unsure, say N. 353 354config IA64_HP_AML_NFW 355 bool "Support ACPI AML calls to native firmware" 356 help 357 This driver installs a global ACPI Operation Region handler for 358 region 0xA1. AML methods can use this OpRegion to call arbitrary 359 native firmware functions. The driver installs the OpRegion 360 handler if there is an HPQ5001 device or if the user supplies 361 the "force" module parameter, e.g., with the "aml_nfw.force" 362 kernel command line option. 363 364config KEXEC 365 bool "kexec system call" 366 depends on !SMP || HOTPLUG_CPU 367 select KEXEC_CORE 368 help 369 kexec is a system call that implements the ability to shutdown your 370 current kernel, and to start another kernel. It is like a reboot 371 but it is independent of the system firmware. And like a reboot 372 you can start any kernel with it, not just Linux. 373 374 The name comes from the similarity to the exec system call. 375 376 It is an ongoing process to be certain the hardware in a machine 377 is properly shutdown, so do not be surprised if this code does not 378 initially work for you. As of this writing the exact hardware 379 interface is strongly in flux, so no good recommendation can be 380 made. 381 382config CRASH_DUMP 383 bool "kernel crash dumps" 384 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU) 385 help 386 Generate crash dump after being started by kexec. 387 388endmenu 389 390menu "Power management and ACPI options" 391 392source "kernel/power/Kconfig" 393 394source "drivers/acpi/Kconfig" 395 396if PM 397menu "CPU Frequency scaling" 398source "drivers/cpufreq/Kconfig" 399endmenu 400endif 401 402endmenu 403 404config MSPEC 405 tristate "Memory special operations driver" 406 depends on IA64 407 select IA64_UNCACHED_ALLOCATOR 408 help 409 If you have an ia64 and you want to enable memory special 410 operations support (formerly known as fetchop), say Y here, 411 otherwise say N. 412