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 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 ZONE_DMA32 66 default y 67 help 68 The Itanium Processor Family is Intel's 64-bit successor to 69 the 32-bit X86 line. The IA-64 Linux project has a home 70 page at <http://www.linuxia64.org/> and a mailing list at 71 <linux-ia64@vger.kernel.org>. 72 73config 64BIT 74 bool 75 select ATA_NONSTANDARD if ATA 76 default y 77 78config MMU 79 bool 80 default y 81 82config STACKTRACE_SUPPORT 83 def_bool y 84 85config GENERIC_LOCKBREAK 86 def_bool n 87 88config GENERIC_CALIBRATE_DELAY 89 bool 90 default 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 ARCH_FORCE_MAX_ORDER 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 select USE_PERCPU_NUMA_NODE_ID 294 help 295 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 296 Access). This option is for configuring high-end multiprocessor 297 server systems. If in doubt, say N. 298 299config NODES_SHIFT 300 int "Max num nodes shift(3-10)" 301 range 3 10 302 default "10" 303 depends on NUMA 304 help 305 This option specifies the maximum number of nodes in your SSI system. 306 MAX_NUMNODES will be 2^(This value). 307 If in doubt, use the default. 308 309config HAVE_ARCH_NODEDATA_EXTENSION 310 def_bool y 311 depends on NUMA 312 313config HAVE_MEMORYLESS_NODES 314 def_bool NUMA 315 316config ARCH_PROC_KCORE_TEXT 317 def_bool y 318 depends on PROC_KCORE 319 320config IA64_MCA_RECOVERY 321 bool "MCA recovery from errors other than TLB." 322 323config IA64_PALINFO 324 tristate "/proc/pal support" 325 help 326 If you say Y here, you are able to get PAL (Processor Abstraction 327 Layer) information in /proc/pal. This contains useful information 328 about the processors in your systems, such as cache and TLB sizes 329 and the PAL firmware version in use. 330 331 To use this option, you have to ensure that the "/proc file system 332 support" (CONFIG_PROC_FS) is enabled, too. 333 334config IA64_MC_ERR_INJECT 335 tristate "MC error injection support" 336 help 337 Adds support for MC error injection. If enabled, the kernel 338 will provide a sysfs interface for user applications to 339 call MC error injection PAL procedures to inject various errors. 340 This is a useful tool for MCA testing. 341 342 If you're unsure, do not select this option. 343 344config IA64_ESI 345 bool "ESI (Extensible SAL Interface) support" 346 help 347 If you say Y here, support is built into the kernel to 348 make ESI calls. ESI calls are used to support vendor-specific 349 firmware extensions, such as the ability to inject memory-errors 350 for test-purposes. If you're unsure, say N. 351 352config IA64_HP_AML_NFW 353 bool "Support ACPI AML calls to native firmware" 354 help 355 This driver installs a global ACPI Operation Region handler for 356 region 0xA1. AML methods can use this OpRegion to call arbitrary 357 native firmware functions. The driver installs the OpRegion 358 handler if there is an HPQ5001 device or if the user supplies 359 the "force" module parameter, e.g., with the "aml_nfw.force" 360 kernel command line option. 361 362config KEXEC 363 bool "kexec system call" 364 depends on !SMP || HOTPLUG_CPU 365 select KEXEC_CORE 366 help 367 kexec is a system call that implements the ability to shutdown your 368 current kernel, and to start another kernel. It is like a reboot 369 but it is independent of the system firmware. And like a reboot 370 you can start any kernel with it, not just Linux. 371 372 The name comes from the similarity to the exec system call. 373 374 It is an ongoing process to be certain the hardware in a machine 375 is properly shutdown, so do not be surprised if this code does not 376 initially work for you. As of this writing the exact hardware 377 interface is strongly in flux, so no good recommendation can be 378 made. 379 380config CRASH_DUMP 381 bool "kernel crash dumps" 382 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU) 383 help 384 Generate crash dump after being started by kexec. 385 386endmenu 387 388menu "Power management and ACPI options" 389 390source "kernel/power/Kconfig" 391 392source "drivers/acpi/Kconfig" 393 394if PM 395menu "CPU Frequency scaling" 396source "drivers/cpufreq/Kconfig" 397endmenu 398endif 399 400endmenu 401 402config MSPEC 403 tristate "Memory special operations driver" 404 depends on IA64 405 select IA64_UNCACHED_ALLOCATOR 406 help 407 If you have an ia64 and you want to enable memory special 408 operations support (formerly known as fetchop), say Y here, 409 otherwise say N. 410