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_ENABLE_MEMORY_HOTPLUG 17 select ARCH_ENABLE_MEMORY_HOTREMOVE 18 select ARCH_SUPPORTS_ACPI 19 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI 20 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI 21 select FORCE_PCI 22 select PCI_DOMAINS if PCI 23 select PCI_MSI 24 select PCI_SYSCALL if PCI 25 select HAVE_ASM_MODVERSIONS 26 select HAVE_UNSTABLE_SCHED_CLOCK 27 select HAVE_EXIT_THREAD 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 HUGETLB_PAGE_SIZE_VARIABLE if HUGETLB_PAGE 37 select VIRT_TO_BUS 38 select GENERIC_IRQ_PROBE 39 select GENERIC_PENDING_IRQ if SMP 40 select GENERIC_IRQ_SHOW 41 select GENERIC_IRQ_LEGACY 42 select ARCH_HAVE_NMI_SAFE_CMPXCHG 43 select GENERIC_IOMAP 44 select GENERIC_SMP_IDLE_THREAD 45 select ARCH_TASK_STRUCT_ON_STACK 46 select ARCH_TASK_STRUCT_ALLOCATOR 47 select ARCH_THREAD_STACK_ALLOCATOR 48 select ARCH_CLOCKSOURCE_DATA 49 select GENERIC_TIME_VSYSCALL 50 select LEGACY_TIMER_TICK 51 select SWIOTLB 52 select SYSCTL_ARCH_UNALIGN_NO_WARN 53 select HAVE_MOD_ARCH_SPECIFIC 54 select MODULES_USE_ELF_RELA 55 select ARCH_USE_CMPXCHG_LOCKREF 56 select HAVE_ARCH_AUDITSYSCALL 57 select NEED_DMA_MAP_STATE 58 select NEED_SG_DMA_LENGTH 59 select NUMA if !FLATMEM 60 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI 61 select SET_FS 62 select ZONE_DMA32 63 default y 64 help 65 The Itanium Processor Family is Intel's 64-bit successor to 66 the 32-bit X86 line. The IA-64 Linux project has a home 67 page at <http://www.linuxia64.org/> and a mailing list at 68 <linux-ia64@vger.kernel.org>. 69 70config 64BIT 71 bool 72 select ATA_NONSTANDARD if ATA 73 default y 74 75config MMU 76 bool 77 default y 78 79config STACKTRACE_SUPPORT 80 def_bool y 81 82config GENERIC_LOCKBREAK 83 def_bool n 84 85config GENERIC_CALIBRATE_DELAY 86 bool 87 default y 88 89config HAVE_SETUP_PER_CPU_AREA 90 def_bool y 91 92config DMI 93 bool 94 default y 95 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK 96 97config EFI 98 bool 99 select UCS2_STRING 100 default y 101 102config SCHED_OMIT_FRAME_POINTER 103 bool 104 default y 105 106config IA64_UNCACHED_ALLOCATOR 107 bool 108 select GENERIC_ALLOCATOR 109 110config ARCH_USES_PG_UNCACHED 111 def_bool y 112 depends on IA64_UNCACHED_ALLOCATOR 113 114config AUDIT_ARCH 115 bool 116 default y 117 118choice 119 prompt "Processor type" 120 default ITANIUM 121 122config ITANIUM 123 bool "Itanium" 124 help 125 Select your IA-64 processor type. The default is Itanium. 126 This choice is safe for all IA-64 systems, but may not perform 127 optimally on systems with, say, Itanium 2 or newer processors. 128 129config MCKINLEY 130 bool "Itanium 2" 131 help 132 Select this to configure for an Itanium 2 (McKinley) processor. 133 134endchoice 135 136choice 137 prompt "Kernel page size" 138 default IA64_PAGE_SIZE_16KB 139 140config IA64_PAGE_SIZE_4KB 141 bool "4KB" 142 help 143 This lets you select the page size of the kernel. For best IA-64 144 performance, a page size of 8KB or 16KB is recommended. For best 145 IA-32 compatibility, a page size of 4KB should be selected (the vast 146 majority of IA-32 binaries work perfectly fine with a larger page 147 size). For Itanium 2 or newer systems, a page size of 64KB can also 148 be selected. 149 150 4KB For best IA-32 compatibility 151 8KB For best IA-64 performance 152 16KB For best IA-64 performance 153 64KB Requires Itanium 2 or newer processor. 154 155 If you don't know what to do, choose 16KB. 156 157config IA64_PAGE_SIZE_8KB 158 bool "8KB" 159 160config IA64_PAGE_SIZE_16KB 161 bool "16KB" 162 163config IA64_PAGE_SIZE_64KB 164 depends on !ITANIUM 165 bool "64KB" 166 167endchoice 168 169source "kernel/Kconfig.hz" 170 171config IA64_BRL_EMU 172 bool 173 depends on ITANIUM 174 default y 175 176# align cache-sensitive data to 128 bytes 177config IA64_L1_CACHE_SHIFT 178 int 179 default "7" if MCKINLEY 180 default "6" if ITANIUM 181 182config IA64_SGI_UV 183 bool "SGI-UV support" 184 help 185 Selecting this option will add specific support for running on SGI 186 UV based systems. If you have an SGI UV system or are building a 187 distro kernel, select this option. 188 189config IA64_HP_SBA_IOMMU 190 bool "HP SBA IOMMU support" 191 select DMA_OPS 192 default y 193 help 194 Say Y here to add support for the SBA IOMMU found on HP zx1 and 195 sx1000 systems. If you're unsure, answer Y. 196 197config IA64_CYCLONE 198 bool "Cyclone (EXA) Time Source support" 199 help 200 Say Y here to enable support for IBM EXA Cyclone time source. 201 If you're unsure, answer N. 202 203config FORCE_MAX_ZONEORDER 204 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE 205 range 11 17 if !HUGETLB_PAGE 206 default "17" if HUGETLB_PAGE 207 default "11" 208 209config SMP 210 bool "Symmetric multi-processing support" 211 help 212 This enables support for systems with more than one CPU. If you have 213 a system with only one CPU, say N. If you have a system with more 214 than one CPU, say Y. 215 216 If you say N here, the kernel will run on single and multiprocessor 217 systems, but will use only one CPU of a multiprocessor system. If 218 you say Y here, the kernel will run on many, but not all, 219 single processor systems. On a single processor system, the kernel 220 will run faster if you say N here. 221 222 See also the SMP-HOWTO available at 223 <http://www.tldp.org/docs.html#howto>. 224 225 If you don't know what to do here, say N. 226 227config NR_CPUS 228 int "Maximum number of CPUs (2-4096)" 229 range 2 4096 230 depends on SMP 231 default "4096" 232 help 233 You should set this to the number of CPUs in your system, but 234 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but 235 only use 2 CPUs on a >2 CPU system. Setting this to a value larger 236 than 64 will cause the use of a CPU mask array, causing a small 237 performance hit. 238 239config HOTPLUG_CPU 240 bool "Support for hot-pluggable CPUs" 241 depends on SMP 242 default n 243 help 244 Say Y here to experiment with turning CPUs off and on. CPUs 245 can be controlled through /sys/devices/system/cpu/cpu#. 246 Say N if you want to disable CPU hotplug. 247 248config SCHED_SMT 249 bool "SMT scheduler support" 250 depends on SMP 251 help 252 Improves the CPU scheduler's decision making when dealing with 253 Intel IA64 chips with MultiThreading at a cost of slightly increased 254 overhead in some places. If unsure say N here. 255 256config PERMIT_BSP_REMOVE 257 bool "Support removal of Bootstrap Processor" 258 depends on HOTPLUG_CPU 259 default n 260 help 261 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU 262 support. 263 264config FORCE_CPEI_RETARGET 265 bool "Force assumption that CPEI can be re-targeted" 266 depends on PERMIT_BSP_REMOVE 267 default n 268 help 269 Say Y if you need to force the assumption that CPEI can be re-targeted to 270 any cpu in the system. This hint is available via ACPI 3.0 specifications. 271 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP. 272 This option it useful to enable this feature on older BIOS's as well. 273 You can also enable this by using boot command line option force_cpei=1. 274 275config ARCH_SELECT_MEMORY_MODEL 276 def_bool y 277 278config ARCH_FLATMEM_ENABLE 279 def_bool y 280 281config ARCH_SPARSEMEM_ENABLE 282 def_bool y 283 select SPARSEMEM_VMEMMAP_ENABLE 284 285config ARCH_SPARSEMEM_DEFAULT 286 def_bool y 287 depends on ARCH_SPARSEMEM_ENABLE 288 289config NUMA 290 bool "NUMA support" 291 depends on !FLATMEM 292 select SMP 293 help 294 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 295 Access). This option is for configuring high-end multiprocessor 296 server systems. If in doubt, say N. 297 298config NODES_SHIFT 299 int "Max num nodes shift(3-10)" 300 range 3 10 301 default "10" 302 depends on NUMA 303 help 304 This option specifies the maximum number of nodes in your SSI system. 305 MAX_NUMNODES will be 2^(This value). 306 If in doubt, use the default. 307 308config HAVE_ARCH_NODEDATA_EXTENSION 309 def_bool y 310 depends on NUMA 311 312config USE_PERCPU_NUMA_NODE_ID 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 tristate "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 389source "drivers/firmware/Kconfig" 390 391endmenu 392 393menu "Power management and ACPI options" 394 395source "kernel/power/Kconfig" 396 397source "drivers/acpi/Kconfig" 398 399if PM 400menu "CPU Frequency scaling" 401source "drivers/cpufreq/Kconfig" 402endmenu 403endif 404 405endmenu 406 407config MSPEC 408 tristate "Memory special operations driver" 409 depends on IA64 410 select IA64_UNCACHED_ALLOCATOR 411 help 412 If you have an ia64 and you want to enable memory special 413 operations support (formerly known as fetchop), say Y here, 414 otherwise say N. 415