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_DMA_MARK_CLEAN 13 select ARCH_HAS_STRNCPY_FROM_USER 14 select ARCH_HAS_STRNLEN_USER 15 select ARCH_MIGHT_HAVE_PC_PARPORT 16 select ARCH_MIGHT_HAVE_PC_SERIO 17 select ACPI 18 select ACPI_NUMA if NUMA 19 select ARCH_ENABLE_MEMORY_HOTPLUG 20 select ARCH_ENABLE_MEMORY_HOTREMOVE 21 select ARCH_SUPPORTS_ACPI 22 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI 23 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI 24 select FORCE_PCI 25 select PCI_DOMAINS if PCI 26 select PCI_MSI 27 select PCI_SYSCALL if PCI 28 select HAS_IOPORT 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 HAVE_SETUP_PER_CPU_AREA 38 select TTY 39 select HAVE_ARCH_TRACEHOOK 40 select HAVE_FUNCTION_DESCRIPTORS 41 select HAVE_VIRT_CPU_ACCOUNTING 42 select HUGETLB_PAGE_SIZE_VARIABLE if HUGETLB_PAGE 43 select GENERIC_IRQ_PROBE 44 select GENERIC_PENDING_IRQ if SMP 45 select GENERIC_IRQ_SHOW 46 select GENERIC_IRQ_LEGACY 47 select ARCH_HAVE_NMI_SAFE_CMPXCHG 48 select GENERIC_IOMAP 49 select GENERIC_SMP_IDLE_THREAD 50 select ARCH_TASK_STRUCT_ON_STACK 51 select ARCH_TASK_STRUCT_ALLOCATOR 52 select ARCH_THREAD_STACK_ALLOCATOR 53 select ARCH_CLOCKSOURCE_DATA 54 select GENERIC_TIME_VSYSCALL 55 select LEGACY_TIMER_TICK 56 select SWIOTLB 57 select SYSCTL_ARCH_UNALIGN_NO_WARN 58 select HAVE_MOD_ARCH_SPECIFIC 59 select MODULES_USE_ELF_RELA 60 select ARCH_USE_CMPXCHG_LOCKREF 61 select HAVE_ARCH_AUDITSYSCALL 62 select NEED_DMA_MAP_STATE 63 select NEED_SG_DMA_LENGTH 64 select NUMA if !FLATMEM 65 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI 66 select ZONE_DMA32 67 select FUNCTION_ALIGNMENT_32B 68 default y 69 help 70 The Itanium Processor Family is Intel's 64-bit successor to 71 the 32-bit X86 line. The IA-64 Linux project has a home 72 page at <http://www.linuxia64.org/> and a mailing list at 73 <linux-ia64@vger.kernel.org>. 74 75config 64BIT 76 bool 77 select ATA_NONSTANDARD if ATA 78 default y 79 80config MMU 81 bool 82 default y 83 84config STACKTRACE_SUPPORT 85 def_bool y 86 87config GENERIC_LOCKBREAK 88 def_bool n 89 90config GENERIC_CALIBRATE_DELAY 91 bool 92 default y 93 94config DMI 95 bool 96 default y 97 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK 98 99config EFI 100 bool 101 select UCS2_STRING 102 default y 103 104config SCHED_OMIT_FRAME_POINTER 105 bool 106 default y 107 108config IA64_UNCACHED_ALLOCATOR 109 bool 110 select GENERIC_ALLOCATOR 111 112config ARCH_USES_PG_UNCACHED 113 def_bool y 114 depends on IA64_UNCACHED_ALLOCATOR 115 116config AUDIT_ARCH 117 bool 118 default y 119 120choice 121 prompt "Processor type" 122 default ITANIUM 123 124config ITANIUM 125 bool "Itanium" 126 help 127 Select your IA-64 processor type. The default is Itanium. 128 This choice is safe for all IA-64 systems, but may not perform 129 optimally on systems with, say, Itanium 2 or newer processors. 130 131config MCKINLEY 132 bool "Itanium 2" 133 help 134 Select this to configure for an Itanium 2 (McKinley) processor. 135 136endchoice 137 138choice 139 prompt "Kernel page size" 140 default IA64_PAGE_SIZE_16KB 141 142config IA64_PAGE_SIZE_4KB 143 bool "4KB" 144 help 145 This lets you select the page size of the kernel. For best IA-64 146 performance, a page size of 8KB or 16KB is recommended. For best 147 IA-32 compatibility, a page size of 4KB should be selected (the vast 148 majority of IA-32 binaries work perfectly fine with a larger page 149 size). For Itanium 2 or newer systems, a page size of 64KB can also 150 be selected. 151 152 4KB For best IA-32 compatibility 153 8KB For best IA-64 performance 154 16KB For best IA-64 performance 155 64KB Requires Itanium 2 or newer processor. 156 157 If you don't know what to do, choose 16KB. 158 159config IA64_PAGE_SIZE_8KB 160 bool "8KB" 161 162config IA64_PAGE_SIZE_16KB 163 bool "16KB" 164 165config IA64_PAGE_SIZE_64KB 166 depends on !ITANIUM 167 bool "64KB" 168 169endchoice 170 171source "kernel/Kconfig.hz" 172 173config IA64_BRL_EMU 174 bool 175 depends on ITANIUM 176 default y 177 178# align cache-sensitive data to 128 bytes 179config IA64_L1_CACHE_SHIFT 180 int 181 default "7" if MCKINLEY 182 default "6" if ITANIUM 183 184config IA64_SGI_UV 185 bool "SGI-UV support" 186 help 187 Selecting this option will add specific support for running on SGI 188 UV based systems. If you have an SGI UV system or are building a 189 distro kernel, select this option. 190 191config IA64_HP_SBA_IOMMU 192 bool "HP SBA IOMMU support" 193 select DMA_OPS 194 default y 195 help 196 Say Y here to add support for the SBA IOMMU found on HP zx1 and 197 sx1000 systems. If you're unsure, answer Y. 198 199config IA64_CYCLONE 200 bool "Cyclone (EXA) Time Source support" 201 help 202 Say Y here to enable support for IBM EXA Cyclone time source. 203 If you're unsure, answer N. 204 205config ARCH_FORCE_MAX_ORDER 206 int 207 default "16" if HUGETLB_PAGE 208 default "10" 209 210config SMP 211 bool "Symmetric multi-processing support" 212 help 213 This enables support for systems with more than one CPU. If you have 214 a system with only one CPU, say N. If you have a system with more 215 than one CPU, say Y. 216 217 If you say N here, the kernel will run on single and multiprocessor 218 systems, but will use only one CPU of a multiprocessor system. If 219 you say Y here, the kernel will run on many, but not all, 220 single processor systems. On a single processor system, the kernel 221 will run faster if you say N here. 222 223 See also the SMP-HOWTO available at 224 <http://www.tldp.org/docs.html#howto>. 225 226 If you don't know what to do here, say N. 227 228config NR_CPUS 229 int "Maximum number of CPUs (2-4096)" 230 range 2 4096 231 depends on SMP 232 default "4096" 233 help 234 You should set this to the number of CPUs in your system, but 235 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but 236 only use 2 CPUs on a >2 CPU system. Setting this to a value larger 237 than 64 will cause the use of a CPU mask array, causing a small 238 performance hit. 239 240config HOTPLUG_CPU 241 bool "Support for hot-pluggable CPUs" 242 depends on SMP 243 default n 244 help 245 Say Y here to experiment with turning CPUs off and on. CPUs 246 can be controlled through /sys/devices/system/cpu/cpu#. 247 Say N if you want to disable CPU hotplug. 248 249config SCHED_SMT 250 bool "SMT scheduler support" 251 depends on SMP 252 help 253 Improves the CPU scheduler's decision making when dealing with 254 Intel IA64 chips with MultiThreading at a cost of slightly increased 255 overhead in some places. If unsure say N here. 256 257config PERMIT_BSP_REMOVE 258 bool "Support removal of Bootstrap Processor" 259 depends on HOTPLUG_CPU 260 default n 261 help 262 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU 263 support. 264 265config FORCE_CPEI_RETARGET 266 bool "Force assumption that CPEI can be re-targeted" 267 depends on PERMIT_BSP_REMOVE 268 default n 269 help 270 Say Y if you need to force the assumption that CPEI can be re-targeted to 271 any cpu in the system. This hint is available via ACPI 3.0 specifications. 272 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP. 273 This option it useful to enable this feature on older BIOS's as well. 274 You can also enable this by using boot command line option force_cpei=1. 275 276config ARCH_SELECT_MEMORY_MODEL 277 def_bool y 278 279config ARCH_FLATMEM_ENABLE 280 def_bool y 281 282config ARCH_SPARSEMEM_ENABLE 283 def_bool y 284 select SPARSEMEM_VMEMMAP_ENABLE 285 286config ARCH_SPARSEMEM_DEFAULT 287 def_bool y 288 depends on ARCH_SPARSEMEM_ENABLE 289 290config NUMA 291 bool "NUMA support" 292 depends on !FLATMEM 293 select SMP 294 select USE_PERCPU_NUMA_NODE_ID 295 help 296 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 297 Access). This option is for configuring high-end multiprocessor 298 server systems. If in doubt, say N. 299 300config NODES_SHIFT 301 int "Max num nodes shift(3-10)" 302 range 3 10 303 default "10" 304 depends on NUMA 305 help 306 This option specifies the maximum number of nodes in your SSI system. 307 MAX_NUMNODES will be 2^(This value). 308 If in doubt, use the default. 309 310config HAVE_ARCH_NODEDATA_EXTENSION 311 def_bool y 312 depends on NUMA 313 314config HAVE_MEMORYLESS_NODES 315 def_bool NUMA 316 317config ARCH_PROC_KCORE_TEXT 318 def_bool y 319 depends on PROC_KCORE 320 321config IA64_MCA_RECOVERY 322 bool "MCA recovery from errors other than TLB." 323 324config IA64_PALINFO 325 tristate "/proc/pal support" 326 help 327 If you say Y here, you are able to get PAL (Processor Abstraction 328 Layer) information in /proc/pal. This contains useful information 329 about the processors in your systems, such as cache and TLB sizes 330 and the PAL firmware version in use. 331 332 To use this option, you have to ensure that the "/proc file system 333 support" (CONFIG_PROC_FS) is enabled, too. 334 335config IA64_MC_ERR_INJECT 336 tristate "MC error injection support" 337 help 338 Adds support for MC error injection. If enabled, the kernel 339 will provide a sysfs interface for user applications to 340 call MC error injection PAL procedures to inject various errors. 341 This is a useful tool for MCA testing. 342 343 If you're unsure, do not select this option. 344 345config IA64_ESI 346 bool "ESI (Extensible SAL Interface) support" 347 help 348 If you say Y here, support is built into the kernel to 349 make ESI calls. ESI calls are used to support vendor-specific 350 firmware extensions, such as the ability to inject memory-errors 351 for test-purposes. If you're unsure, say N. 352 353config IA64_HP_AML_NFW 354 bool "Support ACPI AML calls to native firmware" 355 help 356 This driver installs a global ACPI Operation Region handler for 357 region 0xA1. AML methods can use this OpRegion to call arbitrary 358 native firmware functions. The driver installs the OpRegion 359 handler if there is an HPQ5001 device or if the user supplies 360 the "force" module parameter, e.g., with the "aml_nfw.force" 361 kernel command line option. 362 363config KEXEC 364 bool "kexec system call" 365 depends on !SMP || HOTPLUG_CPU 366 select KEXEC_CORE 367 help 368 kexec is a system call that implements the ability to shutdown your 369 current kernel, and to start another kernel. It is like a reboot 370 but it is independent of the system firmware. And like a reboot 371 you can start any kernel with it, not just Linux. 372 373 The name comes from the similarity to the exec system call. 374 375 It is an ongoing process to be certain the hardware in a machine 376 is properly shutdown, so do not be surprised if this code does not 377 initially work for you. As of this writing the exact hardware 378 interface is strongly in flux, so no good recommendation can be 379 made. 380 381config CRASH_DUMP 382 bool "kernel crash dumps" 383 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU) 384 help 385 Generate crash dump after being started by kexec. 386 387endmenu 388 389menu "Power management and ACPI options" 390 391source "kernel/power/Kconfig" 392 393source "drivers/acpi/Kconfig" 394 395if PM 396menu "CPU Frequency scaling" 397source "drivers/cpufreq/Kconfig" 398endmenu 399endif 400 401endmenu 402 403config MSPEC 404 tristate "Memory special operations driver" 405 depends on IA64 406 select IA64_UNCACHED_ALLOCATOR 407 help 408 If you have an ia64 and you want to enable memory special 409 operations support (formerly known as fetchop), say Y here, 410 otherwise say N. 411