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_IOREMAP 51 select GENERIC_SMP_IDLE_THREAD 52 select ARCH_TASK_STRUCT_ON_STACK 53 select ARCH_TASK_STRUCT_ALLOCATOR 54 select ARCH_THREAD_STACK_ALLOCATOR 55 select ARCH_CLOCKSOURCE_DATA 56 select GENERIC_TIME_VSYSCALL 57 select LEGACY_TIMER_TICK 58 select SWIOTLB 59 select SYSCTL_ARCH_UNALIGN_NO_WARN 60 select HAVE_MOD_ARCH_SPECIFIC 61 select MODULES_USE_ELF_RELA 62 select ARCH_USE_CMPXCHG_LOCKREF 63 select HAVE_ARCH_AUDITSYSCALL 64 select NEED_DMA_MAP_STATE 65 select NEED_SG_DMA_LENGTH 66 select NUMA if !FLATMEM 67 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI 68 select ZONE_DMA32 69 select FUNCTION_ALIGNMENT_32B 70 default y 71 help 72 The Itanium Processor Family is Intel's 64-bit successor to 73 the 32-bit X86 line. The IA-64 Linux project has a home 74 page at <http://www.linuxia64.org/> and a mailing list at 75 <linux-ia64@vger.kernel.org>. 76 77config 64BIT 78 bool 79 select ATA_NONSTANDARD if ATA 80 default y 81 82config MMU 83 bool 84 default y 85 86config STACKTRACE_SUPPORT 87 def_bool y 88 89config GENERIC_LOCKBREAK 90 def_bool n 91 92config GENERIC_CALIBRATE_DELAY 93 bool 94 default 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 ARCH_FORCE_MAX_ORDER 208 int 209 default "16" if HUGETLB_PAGE 210 default "10" 211 212config SMP 213 bool "Symmetric multi-processing support" 214 help 215 This enables support for systems with more than one CPU. If you have 216 a system with only one CPU, say N. If you have a system with more 217 than one CPU, say Y. 218 219 If you say N here, the kernel will run on single and multiprocessor 220 systems, but will use only one CPU of a multiprocessor system. If 221 you say Y here, the kernel will run on many, but not all, 222 single processor systems. On a single processor system, the kernel 223 will run faster if you say N here. 224 225 See also the SMP-HOWTO available at 226 <http://www.tldp.org/docs.html#howto>. 227 228 If you don't know what to do here, say N. 229 230config NR_CPUS 231 int "Maximum number of CPUs (2-4096)" 232 range 2 4096 233 depends on SMP 234 default "4096" 235 help 236 You should set this to the number of CPUs in your system, but 237 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but 238 only use 2 CPUs on a >2 CPU system. Setting this to a value larger 239 than 64 will cause the use of a CPU mask array, causing a small 240 performance hit. 241 242config HOTPLUG_CPU 243 bool "Support for hot-pluggable CPUs" 244 depends on SMP 245 default n 246 help 247 Say Y here to experiment with turning CPUs off and on. CPUs 248 can be controlled through /sys/devices/system/cpu/cpu#. 249 Say N if you want to disable CPU hotplug. 250 251config SCHED_SMT 252 bool "SMT scheduler support" 253 depends on SMP 254 help 255 Improves the CPU scheduler's decision making when dealing with 256 Intel IA64 chips with MultiThreading at a cost of slightly increased 257 overhead in some places. If unsure say N here. 258 259config PERMIT_BSP_REMOVE 260 bool "Support removal of Bootstrap Processor" 261 depends on HOTPLUG_CPU 262 default n 263 help 264 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU 265 support. 266 267config FORCE_CPEI_RETARGET 268 bool "Force assumption that CPEI can be re-targeted" 269 depends on PERMIT_BSP_REMOVE 270 default n 271 help 272 Say Y if you need to force the assumption that CPEI can be re-targeted to 273 any cpu in the system. This hint is available via ACPI 3.0 specifications. 274 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP. 275 This option it useful to enable this feature on older BIOS's as well. 276 You can also enable this by using boot command line option force_cpei=1. 277 278config ARCH_SELECT_MEMORY_MODEL 279 def_bool y 280 281config ARCH_FLATMEM_ENABLE 282 def_bool y 283 284config ARCH_SPARSEMEM_ENABLE 285 def_bool y 286 select SPARSEMEM_VMEMMAP_ENABLE 287 288config ARCH_SPARSEMEM_DEFAULT 289 def_bool y 290 depends on ARCH_SPARSEMEM_ENABLE 291 292config NUMA 293 bool "NUMA support" 294 depends on !FLATMEM 295 select SMP 296 select USE_PERCPU_NUMA_NODE_ID 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 HAVE_MEMORYLESS_NODES 317 def_bool NUMA 318 319config ARCH_PROC_KCORE_TEXT 320 def_bool y 321 depends on PROC_KCORE 322 323config IA64_MCA_RECOVERY 324 bool "MCA recovery from errors other than TLB." 325 326config IA64_PALINFO 327 tristate "/proc/pal support" 328 help 329 If you say Y here, you are able to get PAL (Processor Abstraction 330 Layer) information in /proc/pal. This contains useful information 331 about the processors in your systems, such as cache and TLB sizes 332 and the PAL firmware version in use. 333 334 To use this option, you have to ensure that the "/proc file system 335 support" (CONFIG_PROC_FS) is enabled, too. 336 337config IA64_MC_ERR_INJECT 338 tristate "MC error injection support" 339 help 340 Adds support for MC error injection. If enabled, the kernel 341 will provide a sysfs interface for user applications to 342 call MC error injection PAL procedures to inject various errors. 343 This is a useful tool for MCA testing. 344 345 If you're unsure, do not select this option. 346 347config IA64_ESI 348 bool "ESI (Extensible SAL Interface) support" 349 help 350 If you say Y here, support is built into the kernel to 351 make ESI calls. ESI calls are used to support vendor-specific 352 firmware extensions, such as the ability to inject memory-errors 353 for test-purposes. If you're unsure, say N. 354 355config IA64_HP_AML_NFW 356 bool "Support ACPI AML calls to native firmware" 357 help 358 This driver installs a global ACPI Operation Region handler for 359 region 0xA1. AML methods can use this OpRegion to call arbitrary 360 native firmware functions. The driver installs the OpRegion 361 handler if there is an HPQ5001 device or if the user supplies 362 the "force" module parameter, e.g., with the "aml_nfw.force" 363 kernel command line option. 364 365config KEXEC 366 bool "kexec system call" 367 depends on !SMP || HOTPLUG_CPU 368 select KEXEC_CORE 369 help 370 kexec is a system call that implements the ability to shutdown your 371 current kernel, and to start another kernel. It is like a reboot 372 but it is independent of the system firmware. And like a reboot 373 you can start any kernel with it, not just Linux. 374 375 The name comes from the similarity to the exec system call. 376 377 It is an ongoing process to be certain the hardware in a machine 378 is properly shutdown, so do not be surprised if this code does not 379 initially work for you. As of this writing the exact hardware 380 interface is strongly in flux, so no good recommendation can be 381 made. 382 383config CRASH_DUMP 384 bool "kernel crash dumps" 385 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU) 386 help 387 Generate crash dump after being started by kexec. 388 389endmenu 390 391menu "Power management and ACPI options" 392 393source "kernel/power/Kconfig" 394 395source "drivers/acpi/Kconfig" 396 397if PM 398menu "CPU Frequency scaling" 399source "drivers/cpufreq/Kconfig" 400endmenu 401endif 402 403endmenu 404 405config MSPEC 406 tristate "Memory special operations driver" 407 depends on IA64 408 select IA64_UNCACHED_ALLOCATOR 409 help 410 If you have an ia64 and you want to enable memory special 411 operations support (formerly known as fetchop), say Y here, 412 otherwise say N. 413