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 HAVE_ASM_MODVERSIONS 30 select HAVE_UNSTABLE_SCHED_CLOCK 31 select HAVE_EXIT_THREAD 32 select HAVE_KPROBES 33 select HAVE_KRETPROBES 34 select HAVE_FTRACE_MCOUNT_RECORD 35 select HAVE_DYNAMIC_FTRACE if (!ITANIUM) 36 select HAVE_FUNCTION_TRACER 37 select TTY 38 select HAVE_ARCH_TRACEHOOK 39 select HAVE_VIRT_CPU_ACCOUNTING 40 select HUGETLB_PAGE_SIZE_VARIABLE if HUGETLB_PAGE 41 select VIRT_TO_BUS 42 select GENERIC_IRQ_PROBE 43 select GENERIC_PENDING_IRQ if SMP 44 select GENERIC_IRQ_SHOW 45 select GENERIC_IRQ_LEGACY 46 select ARCH_HAVE_NMI_SAFE_CMPXCHG 47 select GENERIC_IOMAP 48 select GENERIC_SMP_IDLE_THREAD 49 select ARCH_TASK_STRUCT_ON_STACK 50 select ARCH_TASK_STRUCT_ALLOCATOR 51 select ARCH_THREAD_STACK_ALLOCATOR 52 select ARCH_CLOCKSOURCE_DATA 53 select GENERIC_TIME_VSYSCALL 54 select LEGACY_TIMER_TICK 55 select SWIOTLB 56 select SYSCTL_ARCH_UNALIGN_NO_WARN 57 select HAVE_MOD_ARCH_SPECIFIC 58 select MODULES_USE_ELF_RELA 59 select ARCH_USE_CMPXCHG_LOCKREF 60 select HAVE_ARCH_AUDITSYSCALL 61 select NEED_DMA_MAP_STATE 62 select NEED_SG_DMA_LENGTH 63 select NUMA if !FLATMEM 64 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI 65 select SET_FS 66 select ZONE_DMA32 67 default y 68 help 69 The Itanium Processor Family is Intel's 64-bit successor to 70 the 32-bit X86 line. The IA-64 Linux project has a home 71 page at <http://www.linuxia64.org/> and a mailing list at 72 <linux-ia64@vger.kernel.org>. 73 74config 64BIT 75 bool 76 select ATA_NONSTANDARD if ATA 77 default y 78 79config MMU 80 bool 81 default y 82 83config STACKTRACE_SUPPORT 84 def_bool y 85 86config GENERIC_LOCKBREAK 87 def_bool n 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 SCHED_SMT 253 bool "SMT scheduler support" 254 depends on SMP 255 help 256 Improves the CPU scheduler's decision making when dealing with 257 Intel IA64 chips with MultiThreading at a cost of slightly increased 258 overhead in some places. If unsure say N here. 259 260config PERMIT_BSP_REMOVE 261 bool "Support removal of Bootstrap Processor" 262 depends on HOTPLUG_CPU 263 default n 264 help 265 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU 266 support. 267 268config FORCE_CPEI_RETARGET 269 bool "Force assumption that CPEI can be re-targeted" 270 depends on PERMIT_BSP_REMOVE 271 default n 272 help 273 Say Y if you need to force the assumption that CPEI can be re-targeted to 274 any cpu in the system. This hint is available via ACPI 3.0 specifications. 275 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP. 276 This option it useful to enable this feature on older BIOS's as well. 277 You can also enable this by using boot command line option force_cpei=1. 278 279config ARCH_SELECT_MEMORY_MODEL 280 def_bool y 281 282config ARCH_FLATMEM_ENABLE 283 def_bool y 284 285config ARCH_SPARSEMEM_ENABLE 286 def_bool y 287 select SPARSEMEM_VMEMMAP_ENABLE 288 289config ARCH_SPARSEMEM_DEFAULT 290 def_bool y 291 depends on ARCH_SPARSEMEM_ENABLE 292 293config NUMA 294 bool "NUMA support" 295 depends on !FLATMEM 296 select SMP 297 help 298 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 299 Access). This option is for configuring high-end multiprocessor 300 server systems. If in doubt, say N. 301 302config NODES_SHIFT 303 int "Max num nodes shift(3-10)" 304 range 3 10 305 default "10" 306 depends on NUMA 307 help 308 This option specifies the maximum number of nodes in your SSI system. 309 MAX_NUMNODES will be 2^(This value). 310 If in doubt, use the default. 311 312config HAVE_ARCH_NODEDATA_EXTENSION 313 def_bool y 314 depends on NUMA 315 316config USE_PERCPU_NUMA_NODE_ID 317 def_bool y 318 depends on NUMA 319 320config HAVE_MEMORYLESS_NODES 321 def_bool NUMA 322 323config ARCH_PROC_KCORE_TEXT 324 def_bool y 325 depends on PROC_KCORE 326 327config IA64_MCA_RECOVERY 328 bool "MCA recovery from errors other than TLB." 329 330config IA64_PALINFO 331 tristate "/proc/pal support" 332 help 333 If you say Y here, you are able to get PAL (Processor Abstraction 334 Layer) information in /proc/pal. This contains useful information 335 about the processors in your systems, such as cache and TLB sizes 336 and the PAL firmware version in use. 337 338 To use this option, you have to ensure that the "/proc file system 339 support" (CONFIG_PROC_FS) is enabled, too. 340 341config IA64_MC_ERR_INJECT 342 tristate "MC error injection support" 343 help 344 Adds support for MC error injection. If enabled, the kernel 345 will provide a sysfs interface for user applications to 346 call MC error injection PAL procedures to inject various errors. 347 This is a useful tool for MCA testing. 348 349 If you're unsure, do not select this option. 350 351config IA64_ESI 352 bool "ESI (Extensible SAL Interface) support" 353 help 354 If you say Y here, support is built into the kernel to 355 make ESI calls. ESI calls are used to support vendor-specific 356 firmware extensions, such as the ability to inject memory-errors 357 for test-purposes. If you're unsure, say N. 358 359config IA64_HP_AML_NFW 360 bool "Support ACPI AML calls to native firmware" 361 help 362 This driver installs a global ACPI Operation Region handler for 363 region 0xA1. AML methods can use this OpRegion to call arbitrary 364 native firmware functions. The driver installs the OpRegion 365 handler if there is an HPQ5001 device or if the user supplies 366 the "force" module parameter, e.g., with the "aml_nfw.force" 367 kernel command line option. 368 369config KEXEC 370 bool "kexec system call" 371 depends on !SMP || HOTPLUG_CPU 372 select KEXEC_CORE 373 help 374 kexec is a system call that implements the ability to shutdown your 375 current kernel, and to start another kernel. It is like a reboot 376 but it is independent of the system firmware. And like a reboot 377 you can start any kernel with it, not just Linux. 378 379 The name comes from the similarity to the exec system call. 380 381 It is an ongoing process to be certain the hardware in a machine 382 is properly shutdown, so do not be surprised if this code does not 383 initially work for you. As of this writing the exact hardware 384 interface is strongly in flux, so no good recommendation can be 385 made. 386 387config CRASH_DUMP 388 bool "kernel crash dumps" 389 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU) 390 help 391 Generate crash dump after being started by kexec. 392 393endmenu 394 395menu "Power management and ACPI options" 396 397source "kernel/power/Kconfig" 398 399source "drivers/acpi/Kconfig" 400 401if PM 402menu "CPU Frequency scaling" 403source "drivers/cpufreq/Kconfig" 404endmenu 405endif 406 407endmenu 408 409config MSPEC 410 tristate "Memory special operations driver" 411 depends on IA64 412 select IA64_UNCACHED_ALLOCATOR 413 help 414 If you have an ia64 and you want to enable memory special 415 operations support (formerly known as fetchop), say Y here, 416 otherwise say N. 417