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 HAVE_ASM_MODVERSIONS 29 select HAVE_UNSTABLE_SCHED_CLOCK 30 select HAVE_EXIT_THREAD 31 select HAVE_KPROBES 32 select HAVE_KRETPROBES 33 select HAVE_FTRACE_MCOUNT_RECORD 34 select HAVE_DYNAMIC_FTRACE if (!ITANIUM) 35 select HAVE_FUNCTION_TRACER 36 select HAVE_SETUP_PER_CPU_AREA 37 select TTY 38 select HAVE_ARCH_TRACEHOOK 39 select HAVE_FUNCTION_DESCRIPTORS 40 select HAVE_VIRT_CPU_ACCOUNTING 41 select HUGETLB_PAGE_SIZE_VARIABLE if HUGETLB_PAGE 42 select VIRT_TO_BUS 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 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 DMI 94 bool 95 default y 96 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK 97 98config EFI 99 bool 100 select UCS2_STRING 101 default y 102 103config SCHED_OMIT_FRAME_POINTER 104 bool 105 default y 106 107config IA64_UNCACHED_ALLOCATOR 108 bool 109 select GENERIC_ALLOCATOR 110 111config ARCH_USES_PG_UNCACHED 112 def_bool y 113 depends on IA64_UNCACHED_ALLOCATOR 114 115config AUDIT_ARCH 116 bool 117 default y 118 119choice 120 prompt "Processor type" 121 default ITANIUM 122 123config ITANIUM 124 bool "Itanium" 125 help 126 Select your IA-64 processor type. The default is Itanium. 127 This choice is safe for all IA-64 systems, but may not perform 128 optimally on systems with, say, Itanium 2 or newer processors. 129 130config MCKINLEY 131 bool "Itanium 2" 132 help 133 Select this to configure for an Itanium 2 (McKinley) processor. 134 135endchoice 136 137choice 138 prompt "Kernel page size" 139 default IA64_PAGE_SIZE_16KB 140 141config IA64_PAGE_SIZE_4KB 142 bool "4KB" 143 help 144 This lets you select the page size of the kernel. For best IA-64 145 performance, a page size of 8KB or 16KB is recommended. For best 146 IA-32 compatibility, a page size of 4KB should be selected (the vast 147 majority of IA-32 binaries work perfectly fine with a larger page 148 size). For Itanium 2 or newer systems, a page size of 64KB can also 149 be selected. 150 151 4KB For best IA-32 compatibility 152 8KB For best IA-64 performance 153 16KB For best IA-64 performance 154 64KB Requires Itanium 2 or newer processor. 155 156 If you don't know what to do, choose 16KB. 157 158config IA64_PAGE_SIZE_8KB 159 bool "8KB" 160 161config IA64_PAGE_SIZE_16KB 162 bool "16KB" 163 164config IA64_PAGE_SIZE_64KB 165 depends on !ITANIUM 166 bool "64KB" 167 168endchoice 169 170source "kernel/Kconfig.hz" 171 172config IA64_BRL_EMU 173 bool 174 depends on ITANIUM 175 default y 176 177# align cache-sensitive data to 128 bytes 178config IA64_L1_CACHE_SHIFT 179 int 180 default "7" if MCKINLEY 181 default "6" if ITANIUM 182 183config IA64_SGI_UV 184 bool "SGI-UV support" 185 help 186 Selecting this option will add specific support for running on SGI 187 UV based systems. If you have an SGI UV system or are building a 188 distro kernel, select this option. 189 190config IA64_HP_SBA_IOMMU 191 bool "HP SBA IOMMU support" 192 select DMA_OPS 193 default y 194 help 195 Say Y here to add support for the SBA IOMMU found on HP zx1 and 196 sx1000 systems. If you're unsure, answer Y. 197 198config IA64_CYCLONE 199 bool "Cyclone (EXA) Time Source support" 200 help 201 Say Y here to enable support for IBM EXA Cyclone time source. 202 If you're unsure, answer N. 203 204config FORCE_MAX_ZONEORDER 205 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE 206 range 11 17 if !HUGETLB_PAGE 207 default "17" if HUGETLB_PAGE 208 default "11" 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